RESUMEN
Introdução:A reabilitação protética implantosuportada de espaços edêntulos na região do sorriso é um desafio para o cirurgião-dentista. Para obtenção da estética em próteses unitárias sobre implante é necessário considerar aspectos como o correto posicionamento do implante e sua harmonia com os tecidos moles e duros. Objetivo:relatar o resultado estético e funcional de um tratamento com auxílio de coroa provisória associada ao condicionamento gengival na reabilitação final com coroa unitária implantossuportada. Relato de caso clínico: Paciente MJFA, 36 anos, sexo feminino, compareceu à clínica de Prótese Dentária do Departamento de Odontologia/UFRN queixando-se de trauma dentário com perda do elemento dentário 15 e necessidade de "ficar com sorriso mais bonito". Após instalação de implante com conexão cônica e período de osseointegração, foi realizada a confecção da coroa provisória sobre implante e iniciada sessões de condicionamento gengival por meio de acréscimos com resina acrílica, utilizando a técnica de pressão gradual sob a margem gengival. Observou-se uma melhora no tecido periimplantar e um perfil de emergência adequado. O caso possui proservação de 3 anos. Conclusões:a realização de condicionamento gengival previamente a prótese final é uma etapa importante para alcançar umareabilitação com característicasestéticas e funcionais semelhantes à de dentes naturais (AU).
Introduction:Implant-supported prosthetic rehabilitation of edentulous spaces in the smile areais a challenge for dental surgeons. To achieve pleasing esthetics in single implant prostheses it is necessary to consider aspects such as the correct positioning of the implant and its harmony with the soft and hard tissues.Objective:to report the esthetic and functional results of a treatment with the aid of a provisional crown associated with gingival conditioning in the final rehabilitation with a single implant-supported crown.Clinical case report:Patient MJFA, 36 years old, female, attended the Prosthodonticsclinic of the Department of Dentistry/UFRN complaining of dental trauma with loss of tooth 15 and the need to "havea more beautiful smile". Afterinstalling an implant with a conical connection and a period of osseointegration, a temporary crown was made on the implant and gingival conditioning sessions were initiatedby means of acrylic resin augmentations, using the gradual pressure technique under the gingival margin. An improvement in the peri-implant tissue and an adequate emergenceprofile were observed. The case has a 3-year follow-up period.Conclusions:performing gingival conditioning prior to the final prosthesis is an important step in achieving rehabilitation with esthetic and functional characteristics similar to those of natural teeth (AU).
Introducción: La rehabilitación protésica implantosoportada de espacios edéntulos en el áreade la sonrisa es un desafío para el cirujano dentista. Para conseguir una buena estética en las prótesis unitarias sobre implanteses necesario tener en cuentaaspectos como el posicionamiento correctodel implante y su armonía con los tejidos blandos y duros.Objetivo: informar losresultadosestéticosy funcionalesde un tratamiento con ayuda de coronas provisionales asociado al acondicionamiento gingival en la rehabilitación final con corona única implantosoportada.Relato de caso clínico: Lapaciente MJFA, 36 años, sexo femenino, se dirigióa la clínica de Prostodonciadel Departamento de Odontología/UFRN quejándose de un traumatismodental con pérdida del diente 15 y de la necesidad de "tener una sonrisa más bonita". Después de la colocación de un implante con conexión cónica y de un período de osteointegración, se realizó una corona provisional sobre el implante y se iniciaron sesiones de acondicionamiento gingival con aumentos de resina acrílica, utilizando la técnica de presión gradual bajo el margen gingival. Se observó una mejora del tejido periimplantario y un perfil de emergencia adecuado. El caso tiene un seguimiento de 3 años. Conclusiones: el acondicionamiento gingival previo a la prótesis definitiva es una etapaimportante para conseguiruna rehabilitación con características estéticas y funcionales similares a las de los dientes naturales (AU).
Asunto(s)
Humanos , Femenino , Adulto , Acondicionamiento de Tejidos Dentales/instrumentación , Implantes Dentales , Estética Dental , Rehabilitación Bucal , Prótesis Dental de Soporte Implantado , Tomografía Computarizada de Haz Cónico/instrumentaciónRESUMEN
AIM: One of the main problems in dentistry is the injury caused by the long-term application of an ill-fitting denture. The existence of multiple microorganisms along with the susceptibility of the tissue conditioners to colonize them can lead to denture stomatitis. This study is aimed at developing a tissue conditioner incorporated with Carum copticum L. (C. copticum L.) for the effective treatment of these injuries. MATERIALS AND METHODS: The Carum copticum L. essential oil composition was determined by gas chromatography-mass (GC-mass) spectrometry. The antimicrobial activity of the essential oil against the standard strains of bacterial and fungal species was determined by broth microdilution methods as suggested by the Clinical and Laboratory Standards Institute (CLSI). The physical and chemical properties of the prepared tissue conditioner were investigated by viscoelasticity, FTIR assays, and the release study performed. Furthermore, the antibiofilm activity of the Carum copticum L. essential oil-loaded tissue conditioner was evaluated by using the XTT reduction assay and scanning electron microscopy (SEM). RESULTS: The main component of the essential oil is thymol, which possesses high antimicrobial activity. The broth microdilution assay showed that the essential oil has broad activity as the minimum inhibitory concentration was in the range of 32-128 µg mL-1. The viscoelasticity test showed that the essential oil significantly diminished the viscoelastic modulus on the first day. The FTIR test showed that Carum copticum L. essential oil was preserved as an independent component in the tissue conditioner. The release study showed that the essential oil was released in 3 days following a sustained release and with an ultimate cumulative release of 81%. Finally, the Carum copticum L. essential oil exhibited significant activity in the inhibition of microbial biofilm formation in a dose-dependent manner. Indeed, the lowest and highest amounts of biofilm formation on the tissue conditioner disks are exhibited in the Streptococcus salivarius and Candida albicans by up to 22.4% and 71.4% at the 64 µg mL-1 concentration of C. copticum L. with a statistically significant difference (P < 0.05). CONCLUSION: The obtained results showed that the Carum copticum L. essential oil-loaded tissue conditioner possessed suitable physical, biological, and release properties for use as a novel treatment for denture stomatitis.
Asunto(s)
Antiinfecciosos/química , Bacterias/crecimiento & desarrollo , Carum/química , Hongos/crecimiento & desarrollo , Aceites Volátiles/química , Acondicionamiento de Tejidos Dentales/instrumentación , Antiinfecciosos/farmacología , Bacterias/efectos de los fármacos , Biopelículas/efectos de los fármacos , Preparaciones de Acción Retardada , Relación Dosis-Respuesta a Droga , Módulo de Elasticidad , Hongos/efectos de los fármacos , Cromatografía de Gases y Espectrometría de Masas , Humanos , Pruebas de Sensibilidad Microbiana , Microscopía Electrónica de Rastreo , Aceites Volátiles/farmacología , Aceites de Plantas/química , Espectroscopía Infrarroja por Transformada de FourierRESUMEN
Soft denture liners are used in complete and partial removable dentures to distribute functional loads homogeneously on the denture-bearing tissues. These materials are recommended in cases of irregular bone resorption, bony undercuts, thin atrophic mucosa, immediate prosthesis, healing after implant placement, and for patients with bruxism and xerostomia. The resilient lining materials can be categorized as plasticized acrylic resins or silicone elastomers. The plasticized acrylic resin comprises of acrylic polymers and copolymers, a liquid containing an acrylic monomer and plasticisers, such as ethyl alcohol and/or ethyl acetate responsible for preserving the material softness. The silicone elastomers, consisting of dimethylsiloxane polymers, with a chemical composition similar to that of the silicone impression materials devoid of leachable plasticisers, retain their elastic properties for prolonged periods. Most of the currently available materials have several disadvantages, including color stability, long-term resiliency, abrasion resistance, bond strength and porosity. Several modifications have been done recently to overcome of these disadvantages of the soft liners. The current review summarizes the recent developments in soft liners.
Asunto(s)
Materiales Dentales/química , Alineadores Dentales , Resinas Acrílicas/química , Antiinfecciosos/química , Humanos , Elastómeros de Silicona/química , Propiedades de Superficie , Acondicionamiento de Tejidos Dentales/instrumentaciónRESUMEN
OBJECTIVE: Clinical application of lasers in periodontal therapy has continued to expand in last decades; however there are still some controversies. The present study aimed to compare the conditioning effects of the carbon dioxide (CO2) or erbium-doped: yttrium, aluminum and garnet (Er:YAG) laser on periodontally diseased root surfaces following scaling and root planing (SRP) in terms of the alteration of morphologies as well as the attachment of periodontal ligament cells. METHODS: Forty-five periodontally affected root specimens were prepared and randomly assigned into three groups: I control (untreated diseased), II. SRP+CO2 laser (pulsed, noncontact mode), and III. SRP+Er:YAG laser (slight contact mode). After treatment, five specimens in each group were used for surface topographic examination. The remaining 10 specimens in each group were incubated with human periodontal ligament cell suspension. All the specimens were finally evaluated by scanning electron microscopy. RESULTS: The control specimens showed the lowest number of cultured cells, mostly in oval shape, with no tightly attached cells. The CO2 lased specimens showed a significant increase in the number of attached cells compared with controls, but demonstrated some major thermal alterations on the surfaces. The Er:YAG lased specimens showed the significantly highest number of attached cells, mostly in flat form, and did not show distinct thermal damage. CONCLUSIONS: The present study suggests that compared with the CO2 laser, the Er:YAG laser may constitute a more useful conditioning tool for enhancing periodontal cell attachment to periodontally diseased root surfaces, with fewer undesirable thermal side effects.
Asunto(s)
Adhesión Celular/efectos de la radiación , Terapia por Láser/métodos , Láseres de Gas , Láseres de Estado Sólido , Periodontitis/radioterapia , Acondicionamiento de Tejidos Dentales/métodos , Raíz del Diente/efectos de la radiación , Dióxido de Carbono , Raspado Dental , Humanos , Técnicas In Vitro , Terapia por Láser/instrumentación , Microscopía Electrónica de Rastreo , Distribución Aleatoria , Propiedades de Superficie , Acondicionamiento de Tejidos Dentales/instrumentación , Raíz del Diente/ultraestructuraRESUMEN
STATEMENT OF PROBLEM: Adherence and colonization of Candida albicans on tissue conditioners is common and results in irritation of the denture-bearing mucosa. PURPOSE: The purpose of this study was to investigate the antifungal activity and properties of a tissue conditioner by incorporating origanum oil. MATERIAL AND METHODS: Origanum oil at varying concentrations was incorporated into a poly(methyl methacrylate) based tissue conditioner (Visco-gel), and its antifungal activity against Candida albicans was evaluated at 1 day and 1 week by using the agar punch well method. The adherence of Candida albicans, surface roughness, tensile strength, and bond strength of the tissue conditioner with an optimized origanum oil concentration were evaluated. The data were subjected to 2-way ANOVA (α=.05). RESULTS: Sixty vol% origanum oil in tissue conditioner (Visco-gel) showed a mean inhibitory zone of 21.00 ± 1.58 mm at 1 day and 13.44 ± 0.88 mm at 1 week. The control group showed 90 ± 6.80 yeast cells/mm(2) at 1 day and 165 ± 7.63 yeast cells/mm(2) at 1 week, whereas the group with origanum oil showed 16 ± 1.15 yeast cells/mm(2) at 1 day and 32 ± 4.00 yeast cells/mm(2) at 1 week. Surface roughness was less with the incorporation of origanum oil. Tensile strength at 1 day was 0.91 ± 0.52 N for the control group, whereas the group with origanum oil showed 0.16 ± 0.05 N. At 1 day, the bond strength of 3.97 ± 0.75 MPa was observed with control specimens, whereas tissue conditioner with origanum oil showed a bond strength of 3.73 ± 0.65 MPa. CONCLUSIONS: Within the limitations of this in vitro study, origanum oil can be used as an additive to tissue conditioner to reduce the adherence of Candida albicans without significantly affecting its bond strength to heat-polymerized acrylic resin.
Asunto(s)
Antifúngicos/uso terapéutico , Materiales Dentales/química , Alineadores Dentales , Aceites Volátiles/uso terapéutico , Origanum , Acondicionamiento de Tejidos Dentales/instrumentación , Resinas Acrílicas/química , Antifúngicos/química , Materiales Biocompatibles/química , Candida albicans/efectos de los fármacos , Recubrimiento Dental Adhesivo , Bases para Dentadura , Humanos , Ensayo de Materiales , Metilmetacrilatos/química , Fenómenos Microbiológicos/efectos de los fármacos , Aceites Volátiles/química , Propiedades de Superficie , Resistencia a la Tracción , Factores de TiempoRESUMEN
The aim of this study was to evaluate the effect of sealer application and thermal cycling on the bond strength between tissue conditioners and acrylic resin, and to observe the type of bond failure. Two hundred eighty-eight specimens (10x16x3 mm) were made of an acrylic resin (Lucitone 500, Dentsply) using a metal muffle. Specimens were divided into four groups according to the tissue conditioner (Coe-Comfort, GC or Dentusoft, Densell) used and whether or not a sealer (Eversoft Soft Liner Sealer, Myerson) was applied. Each of the four groups was subdivided into other six subgroups (n=12) to undergo thermocycling for 45, 90, 135, 180 or 210 cycles with a dwell time of 60 s, or to be left non thermocycled (control). Tensile bond strength was measured in a universal testing machine at a crosshead speed of 5 mm/min. Sealant application had no effect on the tensile bond strength of the relined acrylic resin, regardless of the tissue conditioner used (Coe-Comfort: p=0.306 and Dentusoft: p=0.1501). The number of thermal cycles had a significant effect on the tensile bond strength of the relined acrylic resin (Coe-Comfort: p=0.002 and Dentusoft: p<0.001). Both tissue conditioners presented similar bond strength to acrylic resin. For both tissue conditioners, sealer coatings had no influence on bond strength, while different numbers of thermal cycles affected that mechanical property.
Asunto(s)
Resinas Acrílicas/química , Recubrimiento Dental Adhesivo , Materiales Dentales/química , Alineadores Dentales , Acondicionamiento de Tejidos Dentales/instrumentación , Análisis del Estrés Dental/instrumentación , Bases para Dentadura , Humanos , Ensayo de Materiales , Ácidos Ftálicos/química , Estrés Mecánico , Propiedades de Superficie , Temperatura , Resistencia a la Tracción , Factores de TiempoRESUMEN
The aim of this study was to evaluate the effect of sealer application and thermal cycling on the bond strength between tissue conditioners and acrylic resin, and to observe the type of bond failure. Two hundred eighty-eight specimens (10x16x3 mm) were made of an acrylic resin (Lucitone 500, Dentsply) using a metal muffle. Specimens were divided into four groups according to the tissue conditioner (Coe-Comfort, GC or Dentusoft, Densell) used and whether or not a sealer (Eversoft Soft Liner Sealer, Myerson) was applied. Each of the four groups was subdivided into other six subgroups (n=12) to undergo thermocycling for 45, 90, 135, 180 or 210 cycles with a dwell time of 60 s, or to be left non thermocycled (control). Tensile bond strength was measured in a universal testing machine at a crosshead speed of 5 mm/min. Sealant application had no effect on the tensile bond strength of the relined acrylic resin, regardless of the tissue conditioner used (Coe-Comfort: p=0.306 and Dentusoft: p=0.1501). The number of thermal cycles had a significant effect on the tensile bond strength of the relined acrylic resin (Coe-Comfort: p=0.002 and Dentusoft: p<0.001). Both tissue conditioners presented similar bond strength to acrylic resin. For both tissue conditioners, sealer coatings had no influence on bond strength, while different numbers of thermal cycles affected that mechanical property.
Os objetivos deste estudo foram avaliar o efeito da aplicação de selante e a ciclagem térmica na resistência de união entre condicionadores de tecido e resina acrílica e observar o padrão de fratura. Duzentos e oitenta e oito espécimes (10×16×3 mm) de resina acrílica (Lucitone 500, Dentsply) foram confeccionados utilizando-se uma mufla metálica. Os espécimens foram divididos em quatro grupos de acordo com o condicionador de tecido (Coe-Comfort, GC ou Dentusoft, Densell) e com o uso ou não de selante (Eversoft Soft Liner Sealer, Myerson). Cada um dos quatro grupos foi subdividido em seis grupos para a realização de 45, 90, 135, 180 ou 210 ciclos térmicos, ou ausência de termociclagem (controle). Resistência de união por tração foi mensurada em uma máquina universal de ensaios com velocidade de 5 mm/min. A aplicação de selante não afetou a resistência de união por tração da resina acrílica reembasada, independentemente do condicionador de tecido utilizado (Coe-Comfort: p=0,306 e Dentusoft: p=0,1501). O número de ciclos térmicos apresentou efeito significativo na resistência de união por tração da resina acrílica reembasada (Coe-Comfort: p=0,002 e Dentusoft: p<0,001). Ambos os condicionadores de tecidos apresentaram resistência de união semelhante à resina acrílica. Para ambos os condicionadores de tecidos, a aplicação de selante não apresentou influência na resistência de união, enquanto que diferentes números de ciclos térmicos afetaram essa propriedade mecânica.
Asunto(s)
Humanos , Resinas Acrílicas/química , Recubrimiento Dental Adhesivo , Alineadores Dentales , Materiales Dentales/química , Acondicionamiento de Tejidos Dentales/instrumentación , Bases para Dentadura , Análisis del Estrés Dental/instrumentación , Ensayo de Materiales , Ácidos Ftálicos/química , Estrés Mecánico , Propiedades de Superficie , Temperatura , Resistencia a la Tracción , Factores de TiempoRESUMEN
AIM: To determine and compare antifungal activity of two tissue conditioners combined with nystatin, miconazole and fluconazole against Candida albicans. MATERIALS AND METHODS: Two tissue conditioners Viscogel and GC Soft combined with nystatin, miconazole and fluconazole were tested against Candida albicans using agar core inhibition diameter assay. One-way analysis of variance followed by Tukey's post-hoc test was used to test the intergroup difference. p-value < 0.05 was considered statistically significant. RESULTS: Maximum inhibition was seen in the fluconazole groups followed by miconazole and the least inhibition was seen in case of nystatin group. CONCLUSION: Tissue conditioners when mixed with antifungal agents showed satisfactory inhibition of Candida albicans. CLINICAL SIGNIFICANCE: Incorporation of antifungal drugs into tissue conditioners shows good inhibition of C. albicans and can be recommended for clinical use.
Asunto(s)
Antifúngicos/farmacología , Candida albicans/efectos de los fármacos , Alineadores Dentales , Fluconazol/farmacología , Miconazol/farmacología , Nistatina/farmacología , Acondicionamiento de Tejidos Dentales/instrumentación , Recuento de Colonia Microbiana , Bases para Dentadura , Humanos , Ensayo de Materiales , Metacrilatos/química , Metilmetacrilatos/química , Pruebas de Sensibilidad Microbiana , Viabilidad Microbiana/efectos de los fármacos , Ácidos Ftálicos/químicaRESUMEN
BACKGROUND: The use of the erbium-doped:yttrium, aluminum, and garnet (Er:YAG) laser in periodontal therapy has been the focus of much research. Recombinant human platelet-derived growth factor-BB (rhPDGF-BB) is suggested as a potent stimulator and strong mitogen for human periodontal ligament cells. The present study tested the direct effects of Er:YAG laser irradiation, alone or with rhPDGF-BB application, on the biocompatibility of periodontally diseased roots through fibroblast attachment and proliferation. METHODS: The study examined five healthy and 15 periodontally involved teeth, prepared from proximal surfaces, which were divided randomly into four groups (10 specimens each): group 1: healthy; group 2: untreated diseased; group 3: Er:YAG laser irradiation (60 mJ/pulse, 10 Hz); and group 4: Er:YAG laser irradiation (60 mJ/pulse, 10 Hz) plus rhPDGF-BB application (50 ng/ml). Three subgroups per group (three specimens each) were incubated for three periods (1, 3, or 7 days). The remaining specimen was used to determine surface topography. Fibroblasts were pooled on root specimens and incubated. Results were evaluated using scanning electron microscopy. Repeated cell counts were performed within a representative standard area. RESULTS: Using paired t tests, all experimental groups (except group 2 diseased) showed statistically significant differences between 1- and 3-day and between 1- and 7-day incubation periods, but not between 3- and 7-day incubation periods. Using analysis of variance, the intergroup comparison showed significant differences favoring group 1 over groups 2 and 3 and group 4 over group 2 at the 1-day incubation period; group 1 was favored over groups 2, 3, and 4 and groups 3 and 4 were favored over group 2 at the 3- and 7-day incubation periods. Comparable effects were shown between groups 3 and 4 for all incubation periods and between groups 2 and 3 and groups 1 and 4 for the 1-day incubation. CONCLUSIONS: Er:YAG laser used alone or in combination with rhPDGF-BB application may offer a promising periodontal therapy for conditioning root surfaces, although the combined application seemed to be slightly more effective. However, testing laser use in intervals and with parameters <60 mJ/pulse and 10 Hz is required to verify the minimum threshold values necessary to obtain complete root debridement and clarify optimal conditions for fibroblast cell attachment and growth. Further studies are needed to determine ideal parameters for creating the best environment for successful periodontal treatment.
Asunto(s)
Fibroblastos/citología , Terapia por Láser , Factor de Crecimiento Derivado de Plaquetas/fisiología , Curetaje Subgingival/métodos , Acondicionamiento de Tejidos Dentales/métodos , Adulto , Becaplermina , Estudios de Casos y Controles , Adhesión Celular/fisiología , Adhesión Celular/efectos de la radiación , Terapia Combinada , Erbio , Femenino , Fibroblastos/efectos de los fármacos , Fibroblastos/efectos de la radiación , Humanos , Técnicas In Vitro , Masculino , Persona de Mediana Edad , Periodontitis/terapia , Factor de Crecimiento Derivado de Plaquetas/uso terapéutico , Proteínas Proto-Oncogénicas c-sis , Distribución Aleatoria , Proteínas Recombinantes , Curetaje Subgingival/instrumentación , Propiedades de Superficie , Acondicionamiento de Tejidos Dentales/instrumentación , Raíz del Diente/citología , Raíz del Diente/efectos de los fármacos , Raíz del Diente/efectos de la radiación , ItrioRESUMEN
Tissue conditioners are susceptible to colonization by microorganisms. Therefore, the prevention of biofilm formation are important for oral hygiene. However, mechanical and chemical cleaning methods may cause clinical problems such as deformation or surface degradation of tissue conditioners. The objective of this study is to evaluate the antifungal effects of coating agents with a TiO2 photocatalyst. Photocatalytic antifungal effects on C. albicans biofilms and photodegradation effects of adsorbed protein were measured by colorimetric assays. Scanning electron microscopy was used to examine morphological changes in C. albicans. Viscosities of coating agents increased with incorporation of TiO2. However, both of coating agents with TiO2 were acceptable to the application by brush. The antifungal and protein degradation effects increased with the concentration of TiO2 in the coating agents. These effects also increased with radiation time. After 90 min radiation, the viability of C. albicans was reduced to 16.2+/-3.3 %. Scanning electron microscopy observation showed C. albicans remained on the coated surfaces even after 90 min radiation. These results suggest that coating agents with TiO2 photocatalyst can be effective for the maintenance of tissue conditioners when dentures are removed; during sleep.
Asunto(s)
Antifúngicos/farmacología , Materiales Biocompatibles Revestidos/farmacología , Alineadores Dentales , Acondicionamiento de Tejidos Dentales/instrumentación , Titanio/farmacología , Adsorción , Antifúngicos/química , Biopelículas/efectos de los fármacos , Biopelículas/efectos de la radiación , Candida albicans/efectos de los fármacos , Candida albicans/efectos de la radiación , Materiales Biocompatibles Revestidos/química , Colorimetría , Humanos , Ensayo de Materiales , Microscopía Electrónica de Rastreo , Desnaturalización Proteica , Albúmina Sérica Bovina/efectos de los fármacos , Propiedades de Superficie , Factores de Tiempo , Titanio/química , Rayos Ultravioleta , ViscosidadRESUMEN
Las ventajas que la incorporación del láser ha proporcionado a la Odontología abarcan todos los ámbitos. Así, los láseres de Argón, de Nd:YAP y de Ho:YAG, tienen aplicaciones muy concretas y de gran interés tanto en el campo de la terapéutica dental como en la especialidad de cirugía bucal. Las aplicaciones principales del láser de Argón se centran en la polimerización de los materiales de restauración, en la endodoncia y dentro del ámbito de la cirugía bucal, en el corte de tejidos blandos, principalmente para la exéresis de lesiones vasculares y pigmentadas: El láser de Nd:YAP se utiliza principalmente en el campo de la endodoncia y la periodoncia, y el láser de Ho:YAG se emplea en cirugía periapical y en la cirugía artroscópica de la articulación temporomandibular (AU)
Asunto(s)
Humanos , Operatoria Dental/instrumentación , Rayos Láser/uso terapéutico , Argón/uso terapéutico , Articulación Temporomandibular/cirugía , Endodoncia/instrumentación , Terapia por Láser/instrumentación , Restauración Dental Permanente/instrumentación , Acondicionamiento de Tejidos Dentales/instrumentaciónRESUMEN
En el siguiente trabajo se realizó una introducción de los problemas que posee dun paciente desdentado total, también de las características de una prótesis completa. Se explica cómo se produce el movimiento elástico mandibular y cómo puede influir en las prótesis. Además se realiza una comparación entre una técnica tradicional y las ventajas de emplear la técnica bucodinámica. Finalmente se detalla paso por paso la construcción de una prótesis completa superior e inferior con la técnica bucodinámica (AU)
Asunto(s)
Humanos , Masculino , Femenino , Estudio Comparativo , Técnica de Impresión Dental/normas , Dentadura Completa/normas , Materiales de Impresión Dental/química , Boca Edéntula/rehabilitación , Mandíbula/fisiología , Dentadura Completa Inferior , Dentadura Completa Superior , Resinas Acrílicas/química , Acondicionamiento de Tejidos Dentales/instrumentación , Registro de la Relación Maxilomandibular/métodos , Bases para Dentadura/clasificación , Rebasado de Dentaduras , Modelos Dentales , Dimensión VerticalRESUMEN
PURPOSE: Surface roughness can affect microbial colonization of long-term denture liners, alloys, and denture acrylic. The purpose of the present study was to examine the effect of finishing and polishing procedures on surface roughness of 4 temporary resilient denture liners (tissue conditioners). MATERIALS AND METHODS: Mean surface roughness was measured for 4 materials (Lynal, Visco-gel, Coe-Soft, and Functional Impression Tissue Toner [FITT]) finished in 4 ways: unfinished (control); polished; reduced, unpolished; and reduced, polished. Samples were allowed to polymerize at 37 degrees C for 24 hours, and the surface roughness was measured using a Mitutoyo Surftest 212. RESULTS: Mean surface roughness ranged from 1.8 +/- 0.8 microns for polished Lynal to 7.8 +/- 1.1 microns for reduced, unpolished FITT. All polished samples were smoother than unpolished samples (including controls), whether or not the samples were reduced with a bur. CONCLUSION: Polished samples of tissue conditioning material had lower mean surface roughness measurements than control or reduced, unpolished samples at the 95% level of confidence. There was no difference in mean surface roughness measurements of control samples and unpolished samples reduced with a bur at the 95% level of confidence. Mean surface roughness differed significantly between the materials tested.
Asunto(s)
Materiales Dentales/química , Pulido Dental , Alineadores Dentales , Resinas Acrílicas/química , Análisis de Varianza , Intervalos de Confianza , Pulido Dental/instrumentación , Pulido Dental/métodos , Geles/química , Humanos , Ensayo de Materiales , Metacrilatos/química , Microscopía Electrónica de Rastreo , Ácidos Ftálicos/química , Propiedades de Superficie , Acondicionamiento de Tejidos Dentales/instrumentaciónRESUMEN
A study was made to determine the effects of a polyvinyl occlusal splint on improving the health of inflamed maxillary supporting mucosa. Color slides were made before and after treatment of the maxillary supporting mucosa of 22 edentulous patients wearing dentures during a 15-day test period. The control group consisted of 13 patients, and the experimental group was comprised of nine patients who wore the occlusal splint over the maxillary denture. The 35 mm color slides taken before and after treatment were evaluated by 50 examiners to determine if the health of the maxillary supporting mucosa was better, the same, or worse after the 15-day test period. Fourteen of the examiners were retested to determine the reliability of the viewer. An observable change was noted in the experimental group at a p value less than 1 in 100,000. These findings indicate that the occlusal splint was effective in improving the health status in 64.7% of the experimental patients and that the experimental method was valid.