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Bone and dental lesions have been documented in various deer species globally, affecting the efficiency of ingestion and digestion, consequently influencing their general health and leading to a decline in survival and reproductive performance. The present study aimed to characterize bone and dental lesions in the dry skulls of individual deer, estimate the prevalence of these lesions, and assess potential risk factors associated with the development of bone and dental alterations. This study assessed bone and dental lesions in 180 dry skulls of eleven neotropical deer species, originating from both captivity and wildlife conditions, through direct visual inspection. A high prevalence of bone and dental lesions was observed in all analyzed species. Dental calculus was the most common alteration (96.7%), followed by dental wear (71.1%). Animal age positively correlated with most bone and dental alterations, indicating that older animals showed more lesions. Additionally, the prevalence of these alterations was similar between sexes. Moreover, all lesions were more common in captive-bred animals, likely attributed to their older age and a less diverse diet. Blastocerus dichotomus and Mazama americana were most affected by bone resorption and dental trauma and had the highest dental calculus prevalence, along with Subulo gouazoubira and Passalites nemorivagus. All eleven species evaluated in the present study were susceptible to the occurrence of bone and dental lesions. Therefore, monitoring oral health and diet in captivity are fundamental practices for the conservation of these species.
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OBJECTIVES: This study aims to map evidence on the relationship between hard drug use and dental wear. The scoping review is guided by the question: What is the relationship between hard drug consumption and dental wear? MATERIALS AND METHODS: Adhering to PRISMA-ScR guidelines, searches were conducted across PubMed, Embase, and four databases in March 2024. Inclusion criteria included studies investigating the association between hard drug use and dental wear, regardless of publication date or language. Data were presented through narrative exposition, tables, and a conceptual framework. RESULTS: Twenty-eight studies (four case-control, three cross-sectional, five case reports, and sixteen literature reviews) were included. Among case-control studies, 75% observed an association between drug use and dental erosion; however, no cross-sectional studies demonstrated this association. Despite questionable quality, reviews established connections between drug use and dental erosion. Studies aimed to elucidate potential causes for dental erosion. CONCLUSIONS: Analysis suggests a potential link between hard drug use and dental wear, though indirect. Factors like bruxism and reduced salivary pH may contribute to dental wear among drug users. Further investigation through primary studies exploring this relationship is necessary. CLINICAL RELEVANCE: Dentists should focus not only on clinical characteristics of dental wear but also on mediating factors such as bruxism and decreased salivary pH associated with drug use. This holistic approach allows for a deeper understanding of dental wear mechanisms, enabling targeted preventive and therapeutic interventions.
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Desgaste dos Dentes , Humanos , Erosão Dentária/induzido quimicamente , Bruxismo , Concentração de Íons de Hidrogênio , Transtornos Relacionados ao Uso de Substâncias , Saliva/químicaRESUMO
Severe tooth wear is related to substantial loss of tooth structure, with dentin exposure and significant loss (≥1/3) of the clinical crown. The objective of this systematic review was to summarize and analyze the scientific evidence regarding the mechanical performance of computer-aided design/computer-aided manufacturing (CAD/CAM) composite resin and CAD/CAM lithium disilicate ceramic occlusal veneers, in terms of fatigue and fracture resistance, on severely worn posterior teeth. Currently, occlusal veneers are an alternative for treating worn posterior teeth. Although scientific evidence demonstrates the good performance of lithium disilicate occlusal veneers, there are less brittle materials with a modulus of elasticity more similar to dentin than ceramics, such as resin CAD/CAM blocks. Therefore, it is important to identify which type of material is best for restoring teeth with occlusal wear defects and which material can provide better clinical performance. This review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A comprehensive search of the PubMed, Embase, Web of Science, Scopus, Cochrane, OpenGrey, Redalyc, DSpace, and Grey Literature Report databases was conducted and supplemented by a manual search, with no time or language limitations, until January 2022. We aimed to identify studies evaluating the fatigue and fracture resistance of CAD/CAM composite resin and ceramic occlusal veneers. The quality of the full-text articles was evaluated according to the modified Consolidated Standards of Reporting Trials (CONSORT) criteria for in vitro studies, and 400 articles were initially identified. After removing duplicates and applying the selection criteria, 6 studies were included in the review. The results demonstrated that the mechanical performance of CAD/CAM composite resin occlusal veneers is comparable to that of CAD/CAM lithium disilicate occlusal veneers in terms of fatigue and fracture resistance.
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Cerâmica , Resinas Compostas , Desenho Assistido por Computador , Facetas Dentárias , Humanos , Porcelana Dentária , Falha de Restauração Dentária , Desgaste dos Dentes/etiologia , Desgaste dos Dentes/terapiaRESUMO
La estética ha llegado a formar una parte muy importante en la odontología actual. Sin embargo, no debemos sobreponer las necesidades estéticas sobre las necesidades funcionales. La pérdida de estructura dental asociada a bruxismo puede ser considerada patológica cuando compromete la guía anterior, la cual es la influencia en los movimientos mandibulares que proveen las superficies contactantes de los dientes maxilares anteriores con los mandibulares anteriores y evita contactos excéntricos dañinos en los dientes posteriores. El objetivo de este reporte de caso es presentar una alternativa conservadora para restablecer tanto la estética como la funcionalidad de una paciente de 34 años de edad que acudió a la Clínica de Prostodoncia de la Universidad Autónoma de Guadalajara en busca de rehabilitación estética de dientes anteriores. Una vez realizada su evaluación inicial se llegó al diagnóstico de pérdida de guía anterior por desgaste patológico asociado a bruxismo. El tratamiento incluyó tratamientos de conductos, remoción de caries y restauraciones mal ajustadas, coronas y carillas para restablecer la guía anterior. Se cumplieron con las expectativas estéticas que tenía la paciente al igual que con las necesidades funcionales que fueron objetivo desde el inicio, logrando un restablecimiento de la guía anterior de manera conservadora (AU)
Esthetics has become a very important part of dentistry today. However, we should not superimpose esthetic needs over functional needs. The loss of tooth structure associated with bruxism can be considered pathologic when it compromises the anterior guidance, which is the influence on mandibular movements that provides the contacting surfaces of the maxillary anterior teeth with the mandibular anterior teeth and avoids damaging eccentric contacts in the posterior teeth. The aim of this case report is to present a conservative way to restore both esthetics and function in a 34-year-old patient who came to the Prosthodontics Clinic of the Universidad Autónoma de Guadalajara in search of an esthetic appearance of her anterior teeth. After her initial evaluation, a diagnosis of anterior guide loss due to pathological wear associated with bruxism was made. Treatment included root canal treatment, removal of caries, and ill-fitting restorations, crowns, and veneers to reestablish the anterior guidance. The aesthetic expectations of the patient have met as well as the functional needs that were aimed from the beginning, achieving a conservative reestablishment of the anterior guidance system (AU)
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Humanos , Feminino , Adulto , Bruxismo/fisiopatologia , Adesivos Dentinários/uso terapêutico , Estética Dentária , Desgaste dos Dentes/reabilitação , Planejamento de Assistência ao Paciente , Placas Oclusais , Preparo do Dente/métodos , Coroas , MéxicoRESUMO
INTRODUCTION: Erosive tooth wear (ETW) has been gaining attention due to its high prevalence. However, ETW clinical diagnosis is difficult and may go unnoticed by many professionals. The present study aimed to develop, implement and evaluate a theoretical-practical training using active methodologies in the development of undergraduate students' skills for the diagnosis of ETW compared to the traditional teaching method. MATERIALS AND METHODS: This randomized controlled study involved two parallel groups: control group (n = 22), with learning based only on theoretical content and test group (n = 24), learning by theoretical-practical activity mediated by monitors/tutors. The theoretical class covered the current concepts of ETW, aetiology, diagnosis, use of the BEWE index, prevention and treatment. The practical training included exercises and discussions based on the diagnosis using BEWE scores of a collection of images and extracted teeth. To evaluate the efficacy of the teaching-learning methods, a theoretical multiple-choice questionnaire and a practical test using images and extracted teeth were applied. The outcome was the number of correct answers. Groups were compared by Mann-Whitney (theoretical knowledge) and T tests (practical ability in diagnosis) (p < .05). RESULTS: There was no significant difference between groups in the theoretical evaluation (p = .866). The test group showed higher ability to diagnose ETW lesions compared to the control group in the practical tests (p = .001). The performance of ETW diagnosis was similar when images were used in comparison to extracted teeth (p = .570). CONCLUSION: The practical activity associated with theoretical classes can be a promising strategy to improve the development of undergraduate students' skills in the diagnosis of ETW.
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Educação em Odontologia , Estudantes de Odontologia , Erosão Dentária , Humanos , Educação em Odontologia/métodos , Erosão Dentária/diagnóstico , Erosão Dentária/prevenção & controle , Erosão Dentária/etiologia , Feminino , Masculino , Competência Clínica , Avaliação Educacional/métodos , Adulto Jovem , Inquéritos e QuestionáriosRESUMO
PURPOSE: The composition and properties of resin-based composite materials could affect tooth wear and lead to clinical problems. Therefore, the study objective was to characterize human tooth wear behavior against a bulk-fill restorative (BF) compared to a conventional resin composite (RC) and a CAD/CAM resin nano ceramic (RN). METHODS: Square-shaped specimens of each material were prepared and sub-divided according to the number of testing cycles (n=8): 100,000, 250,000, and 500,000 cycles. An occlusal wear test was performed using a chewing machine with 49 N, 2 Hz, in 37°C distilled water. Human premolar cusps were used as antagonists. Micro-CT and laser scanner were used to scan antagonists and specimens, respectively. Wear volume was assessed using a software and the wear pattern was examined with SEM. Softening in solvent analysis was performed by measuring the materials' Knoop microhardness (KHN) before and after immersion in ethanol. Wear volume data were analyzed with two-way ANOVA and Student-Neuman-Keuls test (α=0.05). RESULTS: For tooth and specimen wear volume, there was statistical significance for material and number of cycles, but not for the interaction between factors. BF resulted in less tooth (p=0.008) and specimen (p=0.030) wear than RN and RC, which were similar (p⟩0.05). Volume loss increased from 100,000 to 500,000 cycles. BF showed the lowest microhardness (KHN1); and %ΔKHN similar to RC, but greater than RN. CONCLUSION: BF induced less volume loss to the tooth than RC and RN, while presenting greater wear resistance. The tooth wear pattern and damage progression were mild for all materials. CLINICAL SIGNIFICANCE: Resin composites show favorable wear behavior, leading to low volume loss and mild structural damage of the tooth. Regular bulk-fill resin composite stands out for its efficient restorative technique, low wear susceptibility and reduced capacity to wear down the tooth.
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Resinas Compostas , Teste de Materiais , Desgaste dos Dentes , Resinas Compostas/química , Humanos , Restauração Dentária Permanente/métodos , Propriedades de Superfície , Desenho Assistido por Computador , Técnicas In Vitro , Desgaste de Restauração Dentária , Dureza , Materiais Dentários/químicaRESUMO
BACKGROUND: Tooth brushing is a universal recommendation. However, the recommendations related to the time of its execution are conflicting, especially when dealing with patients at risk of erosive tooth wear (ETW) or dental caries. SUMMARY: Our objective was to summarize the evidence on the timing of brushing with fluoridated toothpaste in relation to ETW and cariogenic dietary challenges. We conducted a scoping review following the PRISMA-ScR checklist, using three databases searching for in vivo, in situ, or in vitro studies involving human teeth exposed to either a cariogenic or an erosive challenge. Only models including human saliva and fluoride were assessed. Data selection, extraction, and risk of bias analysis were done in duplicate and independently. From 1,545 identified studies, 17 (16 related to ETW and 1 to dental caries) were included. Most evidence (n = 10) supported that brushing with a fluoride-containing product does not increase ETW, independent of the moment of brushing. Delaying tooth brushing up to 1 h (n = 4) or individualized recommendations based on the patient's problem (n = 2) were less frequent. Only one study reported that brushing pre- or post-meal does not affect Streptococcus mutans counts. Most data were in situ (n = 13), and the overall study quality was judged as sufficient/low risk of bias. KEY MESSAGES: Although the available evidence lacked robust clinical studies, tooth brushing using fluoridated products immediately after an erosive challenge does not increase the risk of ETW and can be recommended, which is in line with recommendations for dental caries prevention. Furthermore, we suggest updating the international guidelines to promote individualized recommendations based on risk factors to prevent either ETW or dental caries.
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Cárie Dentária , Erosão Dentária , Escovação Dentária , Humanos , Cárie Dentária/prevenção & controle , Cárie Dentária/etiologia , Erosão Dentária/prevenção & controle , Erosão Dentária/etiologia , Fluoretos/uso terapêutico , Cremes Dentais/uso terapêutico , Fatores de Tempo , Desgaste dos Dentes/etiologia , Desgaste dos Dentes/prevenção & controle , Cariostáticos/uso terapêutico , Saliva/microbiologiaRESUMO
OBJECTIVE: This study compared the protective effect of an experimental TiF4/Chitosan toothpaste with a commercial toothpaste on the prevention of erosive tooth wear (ETW) in situ. METHODS: Fifteen subjects took part in this crossover and double-blind study, in which they wore a palatal appliance containing 4 bovine enamel and 4 dentin in 3 phases (5 days each). Half of the samples were subjected to erosive challenges (90 s in 0.1 % citric acid, pH 2.5, 4 times/day), and the other half to erosive plus abrasive challenges (15 s plus 45 s of contact, 2 times/day). The phases corresponded to the application of the different toothpastes: 1) TiF4 (1400 ppm F-) plus Chitosan, 2) Elmex®, Erosion Protection (1400 ppm F-, Chitosan), and 3) Placebo (negative control). Tooth wear was measured using contact profilometry (µm) and submitted to two-way RM ANOVA/Tukey test (p < 0.05). RESULTS: No significant differences were detected between the experimental and commercial toothpastes, regardless of the challenge on both tissues. Both significantly reduce ETW compared to negative control (p < 0.0006). Tooth wear was increased by brushing only on eroded enamel (p < 0.01), but not on dentin (p = 0.6085). TiF4/Chitosan [erosion 2.98 ± 1.12 µm vs. erosion and abrasion 3.12 ± 1.33 µm] and Elmex® toothpastes [erosion 2.35 ± 0.93 µm vs. erosion and abrasion 2.98 ± 1.0 µm] minimized the impact of brushing compared to placebo on enamel [erosion 4.62 ± 1.48 µm vs. erosion and abrasion 5.15 ± 1.50 µm]. CONCLUSIONS: TiF4 plus chitosan toothpastes showed to be effective in minimizing the ETW as the commercial toothpaste is in situ. CLINICAL RELEVANCE: The experimental toothpaste has similar effect against ETW compared to the commercial toothpaste. Considering the increased ETW prevalence worldwide, this result supports clinical trials and a possible application of this experimental anti-erosive toothpaste in the future.
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Quitosana , Estudos Cross-Over , Esmalte Dentário , Dentina , Fluoretos , Titânio , Abrasão Dentária , Erosão Dentária , Cremes Dentais , Quitosana/uso terapêutico , Erosão Dentária/prevenção & controle , Cremes Dentais/uso terapêutico , Animais , Esmalte Dentário/efeitos dos fármacos , Método Duplo-Cego , Humanos , Bovinos , Dentina/efeitos dos fármacos , Dentina/patologia , Adulto , Fluoretos/uso terapêutico , Abrasão Dentária/prevenção & controle , Adulto Jovem , Feminino , Masculino , Ácido Cítrico/efeitos adversos , Escovação Dentária , DiaminasRESUMO
OBJECTIVE: To assess the protective effect of fluoride (F) gels supplemented with micrometric or nano-sized sodium trimetaphosphate (TMPmicro and TMPnano, respectively) against enamel erosion in vitro. METHODS: Bovine enamel blocks (n = 140) were selected according to their surface hardness, and randomly divided into seven groups (n = 20/group), according to the gels tested: Placebo (without F/TMP), 4,500 µg F/g (4500F), 9,000 µg F/g (9000F), 4500F plus 2.5 % TMPnano (2.5 % Nano), 4500F plus 5 % TMPnano (5 % Nano), 4500F plus 5 % TMPnano (Micro 5 %) and 12,300 µg F/g (Acid gel). Blocks were treated once during one minute with the gels, and submitted to erosive (ERO, n = 10/group) or erosive plus abrasive (ERO+ABR, n = 10/group) challenges 4 times/day, for 90 s for each challenge (under reciprocating agitation), during consecutive 5 days. Blocks were analyzed by profilometry, and by surface (SH) and cross-sectional hardness (∆KHN). Data were submitted to two-way ANOVA, and Fisher's LSD test (p < 0.05). RESULTS: For ERO, both TMPnano-containing gels promoted enamel wear significantly lower than Placebo and 4500F, reaching levels similar to both positive controls (9000F and acid gel); significantly lower softening was observed for enamel treated with 4500F+5 % Micro and 4500F+2.5 % Nano. Also, the lowest ∆KHN values were observed for 4500F+2.5 % TMPnano among the TMP-containing gels. For ERO+ABR, the lowest enamel wear was achieved by the use of 4500F+5 % Nano among all gels, including both positive controls; lower softening was observed for Placebo and 9000F groups. CONCLUSION: The addition of 5 % nano-sized TMP to a low-fluoride gel produced superior protective effects for enamel under both challenges conditions, when compared with micrometric TMP, reaching values similar to or superior than both positive controls, respectively for ERO and ERO+ABR. CLINICAL SIGNIFICANCE: The supplementation of low-F gels with TMP was shown to significantly improve their effects on enamel erosive wear, and the use of nano-sized TMP further enhances this protective action.
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Cariostáticos , Esmalte Dentário , Géis , Dureza , Nanopartículas , Polifosfatos , Erosão Dentária , Animais , Bovinos , Esmalte Dentário/efeitos dos fármacos , Polifosfatos/farmacologia , Erosão Dentária/prevenção & controle , Cariostáticos/farmacologia , Cariostáticos/uso terapêutico , Distribuição Aleatória , Fluoretos/uso terapêutico , Placebos , Fatores de TempoRESUMO
OBJECTIVES: This study evaluated the resistance of S-PRG (Surface Pre-Reacted Glass-ionomer) composites and other restorative materials against erosive and abrasive challenges and their protective effect on enamel adjacent to the restorations. MATERIALS AND METHODS: Bovine enamel blocks were prepared and randomized into 12 groups, including 6 types of material, each of them subjected to erosion_e or erosion+abrasion_ea: Beautifil II (S-PRG); Beautifil Bulk Restorative (S-PRG); Filtek Z250 XT; Filtek Bulk Fill; EQUIA Forte; Riva Light Cure. Cavities were prepared in the middle of enamel blocks and restored with the materials. Initial profiling measurement was performed on the material and on adjacent enamel (100, 200, 300, 600 and 700 µm from the restoration margin). Palatal intraoral appliances with the restored enamel blocks were used by the volunteers (n = 10). During 5 days appliances were immersed in 2.5 % citric acid for 2 min; 6 × /day (erosion_e). For ea condition, blocks were brushed for 1 min after each acid immersion. Final profile assessment was performed. Data were analysed by two and three way ANOVA followed by Tukey's test (p < 0.05). RESULTS: Material wear: Riva Light Cure showed the highest wear followed by EQUIA Forte and then all resin composites, including the ones with S-PRG (p = 0.000). Enamel wear: there was significant interaction among type of restorative material, wear condition and distance (p = 0.014), enamel around materials showed similar wear (p = 0.983) and the enamel subjected to ea exhibited highest wear (p = 0.000). CONCLUSION: SPRG based composites showed resistance against erosive and abrasive challenges but were not able to protect enamel adjacent to the restorations. CLINICAL SIGNIFICANCE: S-PRG composites exhibit resistance to material wear comparable to resin composites. However, they have shown an inability to effectively protect the adjacent enamel under in situ erosive-abrasive conditions, despite the presence of mineral-loss-preventing ions surrounding materials.
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Erosão Dentária , Animais , Bovinos , Humanos , Erosão Dentária/prevenção & controle , Materiais Dentários , Esmalte Dentário , Cimentos de Ionômeros de Vidro , Ácido CítricoRESUMO
OBJECTIVES: To assess the effect of different tin-containing toothpastes on the control of erosive tooth wear in enamel and dentin. METHODS: Enamel and dentin slabs were randomly distributed into 7 experimental groups (n = 10/substrate): C-: negative control (Artificial saliva); AmF (regular fluoridated toothpaste without tin); Sn-1 (SnF2/NaF); Sn-2 (SnF2/NaF/SnCl2); Sn-3 (SnCl2/NaF); Sn-4 (SnF2/SnCl2); Sn-5 (SnCl2/AmF/NaF/chitosan). Specimens were submitted to 5-day erosion-abrasion cycling. Surface loss (SL) was determined with an optical profilometer. Tin deposition on the tooth surfaces and some characteristics of the toothpastes (pH, potentially available F-, %weight of solid particles, and RDA) were also assessed. Data were statistically analyzed (α = 0.05). RESULTS: For enamel, the Sn-2 presented the lowest SL, not differing significantly from AmF, C+, and Sn-3. The SL of these groups was significantly lower than the C-, except for Sn-3. Sn-1 and Sn-4 were also not significantly different from C-. For dentin, C- significantly showed the highest SL values, whilst, Sn-1 presented the lowest SL, not differing significantly from AmF, Sn-2, C+, and Sn-3. There was a significant positive association between enamel SL and the pH and tin deposition. Dentin SL was significantly negatively associated with the %weight of solid particles and RDA. CONCLUSIONS: Most of the tin-toothpastes were able to exhibit some protection against ETW. In this process, the toothpastes characteristics play a role, as lower enamel SL was significantly associated with lower pH values and tin deposition; and lower dentin SL was associated with higher %weight of solid particles and RDA of the toothpastes. CLINICAL SIGNIFICANCE: Tin-containing toothpastes can be used for erosive tooth wear protection, but our study showed that their effect depends on the pH, amount of tin deposition, % weight of solid particles and RDA of the toohpastes.
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Compostos de Estanho , Abrasão Dentária , Erosão Dentária , Desgaste dos Dentes , Humanos , Fluoretos de Estanho/farmacologia , Cremes Dentais/farmacologia , Fluoretos/farmacologia , Erosão Dentária/prevenção & controle , Estanho , Abrasão Dentária/prevenção & controle , Fluoreto de Sódio/farmacologia , Escovação DentáriaRESUMO
To assess the physical properties and topographical aspect of dental enamel's surface microhardness (KHN), surface roughness (Ra), and color parameters CIELAB (∆Eab*), CIEDE 2000 (∆E00), and whiteness index for dentistry (∆WID) after toothbrushing with experimental toothpaste formulations with the following mineral clay types: kaolin, Sparclay SGY, and Tersil CGY used as abrasive component. Scanning electron microscopy (SEM) was performed for topographical analyses purposes. A total of 96 bovine incisors were used in the experiment. They were divided into eight experimental groups (n = 12), namely: NC-negative control (no treatment), CT12-Colgate Total 12®, CMP-Colgate® Máxima Proteção Anticáries, K-kaolin experimental toothpaste, SGY-Sparclay SGY experimental toothpaste; CGY-Tersil CGY experimental toothpaste, SD-SiO2 experimental toothpaste, and CC-CaCO3 experimental toothpaste. All samples were subjected to mechanical brushing protocol with 5000 cycles and kept in artificial saliva with daily exchanges. KHN was analyzed through the mixed linear model for repeated measures over time. Ra was analyzed through nonparametric Kruskal Wallis and Dunn tests to compare the groups. Paired Wilcoxon test was run to compare experimental times. ∆WID, ∆Eab*, and ∆E00 were analyzed through Kruskal Wallis and Dunn tests. All analyses were performed in R* software, at 5% significance level. EXP_SGY recorded higher KHN than EXP_SiO2 and EXP_CaCO3, whereas EXP_K showed increased Ra in comparison to CMP (p = 0.0229). ∆Eab and ∆E00 were significantly higher in the CT12, EXP_SiO2, and EXP_CaCO3 groups than in the NC and EXP_K (p < 0.0001). There were no significant changes in ∆WID (p = 0.0852). According to SEM results, toothbrushing with experimental toothpastes added with mineral clay types did not have significant impact on enamel's polishing and smoothness. CLINICAL RELEVANCE: Mineral clays have a broad application in the cosmetic industry, and recently, they have been used in the formulation of vegan toothpaste.
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Silicatos de Alumínio , Argila , Esmalte Dentário , Dureza , Escovação Dentária , Cremes Dentais , Cremes Dentais/química , Animais , Bovinos , Argila/química , Silicatos de Alumínio/química , Propriedades de Superfície , Microscopia Eletrônica de VarreduraRESUMO
INTRODUCTION: This study investigated the changes in the acquired enamel pellicle (AEP) proteome when this integument is formed in vivo after treatment with sugarcane-derived cystatin (CaneCPI-5), hemoglobin (HB), and a statherin-derived peptide (StN15), or their combination and then exposed to an intrinsic acid challenge. The effectiveness of these treatments in preventing intrinsic erosion was also evaluated. METHODS: Ten volunteers, after prophylaxis, in 5 crossover phases, rinsed with the following solutions (10 mL, 1 min): control (deionized water-H2O) - group 1, 0.1 mg/mL CaneCPI-5 - group 2, 1.0 mg/mL HB - group 3, 1.88 × 10-5
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Cálcio , Erosão Dentária , Humanos , Cálcio/metabolismo , Película Dentária , Peptídeos , Proteoma , Erosão Dentária/prevenção & controle , Hemoglobinas/metabolismoRESUMO
BACKGROUND: Periodontitis and tooth wear are multifactorial diseases with distinct etiopathogenesis that affect the health, feed efficiency and welfare of sheep. METHODS: This study evaluated the co-occurrence of tooth wear and periodontal lesions in 129 ewes from two Brazilian flocks, clinically classified the lesions and presence of dental calculus, and identified potential pathogens in the dental biofilm of 63 ewes by polymerase chain reaction. RESULTS: Of the 129 ewes included in the study, 75 presented periodontal lesions, while all animals presented tooth wear and dental calculus. Of the animals with periodontal lesions, 16.2% had lesions in incisor teeth and 52.7% in masticatory teeth. Regarding excessive tooth wear, 38.6% had severe wear on the incisor teeth and 89.1% on the masticatory teeth. Ewes older than 36 months had a higher frequency of periodontal lesions in incisor teeth (p < 0.001) and a greater amount of dental calculus (p < 0.001), but there was no association between tooth wear and animal age. Fusobacterium nucleatum, Tannerella forsythia and Fusobacterium necrophorum predominated in periodontal lesions. LIMITATION: This study is limited by the small sample size and lack of diagnostic imaging to assess periodontal disease. CONCLUSION: The co-occurrence of periodontal lesions and excessive dental wear involving both the incisor and masticatory teeth suggests that although the two diseases have different aetiologies, they likely have common risk factors.
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Doenças Periodontais , Doenças dos Ovinos , Desgaste dos Dentes , Animais , Feminino , Ovinos , Incisivo/patologia , Brasil/epidemiologia , Cálculos Dentários/epidemiologia , Cálculos Dentários/veterinária , Doenças Periodontais/patologia , Doenças Periodontais/veterinária , Desgaste dos Dentes/epidemiologia , Desgaste dos Dentes/veterinária , Doenças dos Ovinos/epidemiologiaRESUMO
O estudo avaliou o efeito da adição de partículas bioativas ao gel clareador (peróxido de hidrogênio 35%, técnica de consultório), quanto ao clareamento e sobre a estrutura dental, além da resistência à desmineralização. O objetivo da primeira parte do estudo foi avaliar géis, com diferentes partículas bioativas e concentrações, para o potencial clareador e às alterações da estrutura dental. O objetivo da segunda parte foi avaliar géis, com diferentes partículas bioativas e concentrações, perante a suscetibilidade do esmalte ao protocolo cariogênico e ao desgaste dental erosivo. Espécimes de incisivos bovinos foram avaliados na primeira parte por análise da cor, microdureza Knoop e rugosidade. Os grupos foram controle negativo (CN), controle comercial (CCWhiteness HP), controle experimental (CE-gel sem partícula), controle positivo (CPsolução de peróxido), e os grupos experimentais onde as partículas bioativas S-PRG e 45S5 foram utilizadas nas concentrações de 5, 10, 15 e 20 %. Na segunda parte foram avaliados por microradiografia para a alteração da densidade mineral e profundidade da lesão perante o protocolo cariogênico e pela perfilometria para o desgaste dental erosivo. Os grupos foram CN, CC, CE, controle fluoreto (CF), e os grupos experimentais onde as partículas bioativas S-PRG e 45S5 foram utilizados nas concentrações de 15 e 20 % apenas. Os dados foram analisados estatisticamente para verificar a diferença entre os grupos (α=5%). Para a mudança de cor (∆E*00) foi observada diferença apenas para o fator partícula, S-PRG-3,37(0,48)a e 45S5-3,67(0,76)b. Todos os grupos experimentais foram estatisticamente iguais o CP e diferentes do CN. Para a microdureza (KNH%) foi observada diferença para a interação dos fatores, sendo o S-PRG 20% o grupo com maior aumento da microdureza. Todos os grupos experimentais foram diferentes e maiores que CP, CC e CE. Não foram observadas diferenças de rugosidade entre os grupos. Para a alteração da densidade mineral foi observada diferença para a interação dos fatores e tempo. Os grupos S-PRG 15% e 20% foram os grupos que apresentaram a menor alteração da densidade mineral em todos os tempos testados. Aos 14 e 21 dias o SPRG 20% foi diferente do CN e semelhante ao CF. Para a profundidade da lesão foram observadas diferenças estatísticas para o fator partícula e tempo, S-PRG206,8(59,2)a e 45S5 230,0(63,7)b, 7 dias-148,9(19,7)a, 14 dias-217,7(22,5)b e 21 dias288,7(30,7)c. Aos 14 e 21 dias o S-PRG 20% foi diferente do CN e semelhante ao CF. Para o desgaste foi observada diferença apenas para o tempo, 5 dias-1,2(0,2)a e 10 dias-2,3(0,3)b. Conclui-se que: a adição de partículas bioativas não reduziu a efetividade clareadora, contribuiu para o aumento da microdureza e não alterou a rugosidade. Além disso, o grupo S-PRG com 20% teve suscetibilidade à desmineralização por cárie semelhante ao grupo controle fluoreto e nenhum grupo alterou a suscetibilidade ao desgaste dental erosivo (AU)
The study evaluated the consequences of bioparticle addition on tooth bleaching gel (hydrogen peroxide 35%, in-office technique), for its bleaching effect and changes on tooth structure, also for resistance against demineralization. The aim of the first part of the study was to evaluate bleaching gels containing different bioactive particles and concentrations over the bleaching potential and possible dental structural changes. The objective of the second part was to evaluate bleaching gels containing different bioactive particles and concentrations to assess enamel susceptibility to cariogenic and erosive tooth wear protocols after bleaching treatments. Bovine incisors specimens were used in the first part for analysis of color, Knoop microhardness and roughness. The groups were negative control (NC), commercial control (CCWhiteness HP), experimental control (EC-gel without particles), positive control (PCperoxide solution), and experimental groups were the bioactive particles S-PRG and 45S5 used in concentrations of 5, 10, 15, and 20 %. In the second part, specimens were evaluated using advanced transverse microradiography to assess the change in mineral density and lesion depth in response to the cariogenic protocol, and profilometry to measure wear in response to the erosive tooth wear protocol. The groups were NC, CC, EC, fluoride control (FC), and experimental groups were the bioactive particles S-PRG and 45S5 used only in concentrations of 15 and 20 %. The data were statistically analyzed to verify the differences between the groups (α=5%). For the color change (∆E*00), a difference was observed only for particle, S-PRG3,37(0,48)a and 45S5-3,67(0,76)b. All experimental groups were statistically similar to PC and different from NC. For the microhardness (KNH%), difference was observed for factors interaction, S-PRG 20% was the group with higher hardness increase. All experimental groups were different and higher than PC, CC, and EC. No roughness differences were observed between groups. For the mineral density alteration differences were observed for factors interaction and time. S-PRG 15% and 20% presented the lower mineral density change for all measurements times. On 14 and 21 days S-PRG 20% was different from NC and similar to FC. For lesion depth differences were observed for factor particle and time, S-PRG-206,8(59,2)a and 45S5- 230,0(63,7)b, 7 days-148,9(19,7)a, 14 days-217,7(22,5)b and 21 days-288,7(30,7)c. On 14 and 21 days S-PRG 20% was different from NC and similar to FC. For wear the only difference was for time, 5 days-1,2(0,2)a and 10 days-2,3(0,3)b. It was concluded that the addition of bioactive particles did not reduce the bleaching effectiveness, it contributed to microhardness increase and did not change roughness. Furthermore, the S-PRG group with 20% susceptibility to cariogenic demineralization was similar to the fluoride control group, and no group showed a change in susceptibility to erosive tooth wear (AU)
Assuntos
Clareamento Dental , Desmineralização , Cor , Desgaste dos DentesRESUMO
Abstract Accurate determination of the prevalence of erosive tooth wear (ETW) and associated risk factors in adolescents can inform clinical management guidelines. The aim of this analytical cross-sectional study was to estimate the prevalence, severity, and risk factors of ETW in adolescents aged 12-15 years in the municipality of Usaquén in Bogotá, Colombia. Two calibrated examiners clinically assessed ETW using Basic Erosive Wear Examination (BEWE) Index (range: 0-3). All tooth surfaces (excluding proximal) were scored to allow estimation of the Highest (0-3) and Total BEWE (sum of Highest BEWE score per sextant: 0-18) scores per patient. Sociodemographic characteristics, ETW risk factors, and caries severity (ICDAS-epi-merged) were evaluated, and their association with the presence of ETW (indicated by a Highest BEWE score of 2-3) was examined using preliminary analyses and logistic regression models. The study sample included 454 adolescents (mean age: 13.5±1.1 years; female: 61.7%), and the prevalence of ETW was 71.6%. The majority of participants exhibited a Highest BEWE score of 3 (58.0%) and a Total BEWE score ≤8 (84.3%). The preliminary analysis showed an association between the presence of ETW and age, caries, and brushing teeth before eating (p-value < 0.05). Risk factors for ETW included always brushing teeth before eating [adjusted Prevalence Ratio (PRa) 1.31, p-value=0.014], presence of extensive carious lesions (PRa 1.23, p-value = 0.024), male gender (PRa 1.14, p-value = 0.028), and age > 14 years (PRa 1.17, p-value = 0.009). Although ETW was highly prevalent, most Colombian adolescents exhibited low Total BEWE scores. ETW was associated with frequent fruit intake, age, toothbrushing habits, caries lesions, and sex.
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Abstract Objectives This study aimed to assess the effect of proanthocyanidin, palm oil and vitamin E against erosive and erosive+abrasive challenges in vitro after enamel pellicle formation in situ. Methodology Bovine enamel blocks (n=84) were obtained and divided into the following treatment groups: negative control (NC) - deionized water; positive control (PC) - SnCl2/NaF/AmF-containing solution; palm oil (PO); 2% proanthocyanidin (P2); vitamin E (VitE); 2% proanthocyanidin+palm oil (P2PO); and 2% proanthocyanidin+vitamin E (P2VitE). For 5 days, one half of the sample from each group was subjected to erosion and the other half was subjected to erosion+abrasion. The acquired enamel pellicle (AEP) was pre-formed in situ for 30 minutes. The specimens were then treated in vitro with solutions (500 µl, 30s for each group). Subsequently, the blocks were left in the oral cavity for another hour to obtain the modified AEP. The blocks were immersed in 0.5% citric acid (pH=2.5) for 90s, 4×/day. AEP formation and treatment were carried out before the first and third erosive challenges, and after these challenges, abrasive cycles (15s) were performed on half of the samples. Enamel wear was quantified by profilometry and data were analyzed by two-way ANOVA and Tukey's test (p<0.05). Results All groups showed higher wear when exposed to erosion+abrasion than when exposed to erosion alone (p=0.0001). PO, P2VitE, P2, and P2PO showed enamel wear similar to the PC group, but only PC, PO and P2VitE differed from the NC group. The other groups behaved similarly to NC. Conclusion It was concluded that the combination of proanthocyanidin and vitamin E was effective in reducing wear in the face of in vitro erosive and erosive+abrasive challenges.
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The aim of this study was to assess the erosive tooth wear (ETW) at early and mature adulthood in subjects with natural normal occlusion. The sample consisted of 23 untreated subjects with normal occlusion. Dental models were taken longitudinally from the same subjects at 13 (T0), 17 (T1) and 60.9 years of age (T2) at a university. Evaluation of ETW was performed using a modified Basic Erosive Wear Examination (BEWE) index. Interphase changes were evaluated using Friedman and Dunn's test. Ordinal logistic regression was used to assess the influence of sex, dental arch, tooth and dental surfaces on the erosive tooth wear. Linear regression was used to evaluate whether the ETW degree at T1 could discriminate the degree of ETW at T2. The significance level adopted was 5%. ETW showed a significant increase with aging. The median ETW index at T0, T1 and T2 was 2, 4 and 7, respectively. ETW was greater in males in the incisors and canines and on the incisal/occlusal and lingual tooth surfaces. No significant differences were found between the maxillary and mandibular arches. Subjects with severe ETW at mature adulthood had greater tooth wear at age 17. In conclusion, ETW significantly increased during aging in subjects with normal occlusion. The greater the degree of tooth wear at early adulthood, the greater the tooth wear at mature adulthood. Preventive care should be recommended during early adulthood in patients demonstrating erosive tooth wear in order to avoid worsening with aging.
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The longevity of ceramic laminate veneers can be influenced by several factors, which can result in the need for a removal process. Laser removal has emerged as a good alternative to facilitate the procedure, and its repercussions on tooth enamel have been investigated. We aimed to evaluate the efficacy of erbium lasers for debonding ceramic laminate veneers without damaging the tooth enamel. This systematic review based on the PICOS model adhered to the PRISMA statement. The PubMed/MEDLINE, Web of Science, Embase, and Scopus databases were systematically searched until December 1, 2022, and 2902 studies were retrieved. After screening, four in vitro studies that analyzed the dental morphology using scanning electron microscopy, optical analysis, stereomicroscopy, or x-ray dispersion spectroscopy were included. The risk of bias was assessed using the Cochrane Collaboration tool. Our findings suggest that erbium lasers are useful for ceramic laminate veneer removal without damaging the tooth enamel. However, the removal is influenced by the type and thickness of ceramic and type of cement used. It could be concluded that the application of Erbium laser did not promote superficial changes in the dental enamel. This effect was observed in all analysis performed.
Assuntos
Cerâmica , Érbio , Microscopia Eletrônica de Varredura , Esmalte Dentário , LasersRESUMO
El desgaste dental severo se describe como la pérdida sustancial de la estructura dental, con exposición de la dentina y pérdida significativa de igual o más de 1/3 de la corona clínica. El uso de materiales compuestos de resina permite al clínico ser más conservador, debido a su aplicación mínimamente invasiva. Además de ello, son relativamente económicas, proporcionan buena estética general, así como un buen rendimiento y facilidad en la reparación. El objetivo de esta revisión de literatura sistematizada es recopilar información disponible en la literatura referente a cuál es el rendimiento clínico de las restauraciones adhesivas con resina compuesta en casos de pacientes con desgaste severo e incremento de la dimensión vertical como objetivo rehabilitador. Se analizaron artículos entre los años 2000 y 2022, seleccionando cuatro bases de datos (Pubmed, Scopus, Scielo y Web of Science). Para identificar los descriptores se utilizó los Medical subject headings (Mesh): Tooth Wear, Composite Restorations, Resin y Oral Rehabilitation. No se aplicó restricciones de idioma, país de origen, autor o lugar de publicación donde se realizó el estudio. Como resultado de la búsqueda se obtuvieron 71 artículos, de los cuales se seleccionaron 5 que cumplieron con los criterios de elegibilidad para ser considerados en la revisión de literatura sistematizada. Se encontró un promedio de tasa de éxito ente el 89,4 % - 100 % en un promedio total de 5.2 años de seguimiento. Se puede concluir, hasta donde se tiene conocimiento en la literatura científica disponible, que el tratamiento de restauraciones adhesivas con resinas compuestas en pacientes con desgaste severo es recomendable, enfocado en un periodo a corto-mediano plazo (3-5 años), siendo una opción de tratamiento económica y mínimamente invasiva.
Severe tooth wear is described as the substantial loss of tooth structure, with dentin exposure and significant loss of equal to or more than 1/3 of the clinical crown. The use of resin composite materials allows the clinician to be more conservative, due to its minimally invasive application. In addition to this, they are relatively inexpensive, provide good general aesthetics, as well as good performance and ease of repair. The objective of this systematic literature review is to collect information available in the literature regarding the clinical performance of adhesive restorations with composite resin in cases of patients with severe wear and increase in the vertical dimension as a rehabilitation objective. Articles between the years 2000 and 2022 were analyzed, selecting four databases (Pubmed, Scopus, Scielo and Web of Science). To identify the descriptors, the Medical subject headings (Mesh) were used: Tooth Wear, Composite Restorations, Resin and Oral Rehabilitation. No language, country of origin, author or place of publication restrictions where the study was conducted were applied. As a result of the search, 71 articles were obtained, of which 5 were selected that met the eligibility criteria to be considered in the systematic literature review. An average success rate between 89.4 % - 100 % was found in a total average of 5.2 years of follow-up. It can be concluded, to the best of our knowledge in the available scientific literature, that the treatment of adhesive restorations with composite resins in patients with severe wear is recommendable, focused on a short-medium term period (3-5 years), being a Inexpensive and minimally invasive treatment option.