RESUMEN
BACKGROUND: The objective of this study was to assess the influence of lingual bar and lingual plate major connectors on plaque retention and gingival health among patients who presented in University College Hospital (UCH), Ibadan, Nigeria. METHODS: This comparative intervention study was carried out among fifteen patients aged 28 to 60 years with Kennedy class III lower edentulous arch. Two metal dentures with different major connector designs (lingual plate and lingual bar) were fabricated for each patient. After professional scaling and polishing, a baseline score of the oral hygiene was done using the plaque index of Sillness and Loe and the gingival health using the gingival index of Loe and Sillness. Each patient was randomly assigned either a denture with the plate or bar design to use for three months and then recalled for reassessment of oral hygiene and gingival health. Professional scaling and polishing was done post removal and a new baseline assessment of oral hygiene and gingival health recorded. The dentures were now exchanged and the second major connector design inserted. Each patient was recalled for reassessment of the oral hygiene and gingival health after three months. The level of plaque accumulation and gingival inflammation with the use of lingual plate and bar dentures were determined and compared. RESULTS: There was no statistically significant difference in the mean plaque index score for the lingual bar design at three months and the mean plaque index score at three months for the lingual plate (p > 0.05). However, a statistically significant lower mean gingival index score was noted three months post insertion for lingual bar designs when compared to plate designs. CONCLUSION: Within the limitation of this study, better gingival health was noted with the bar designs when compared with the plate designs.
Asunto(s)
Placa Dental , Dentadura Parcial Removible/efectos adversos , Gingivitis/etiología , Diseño de Prótesis , Adulto , Femenino , Gingivitis/diagnóstico , Humanos , Masculino , Persona de Mediana Edad , Índice PeriodontalRESUMEN
OBJECTIVES: The aim was to determine the success rate of single visit root canal treatment (RCT) and thus encourage clinicians to offer this treatment option appropriately. MATERIALS AND METHODS: This was a longitudinal clinical study involving all teeth of the secondary dentition except third molars in the upper and lower jaws. Teeth having irreversible pulpitis, pulp necrosis or periapical periodontitis were included in the study. RCT and obturation was done at a single visit. The patients were monitored over 6 months. RESULTS: Forty-five teeth were treated in 21 females and 24 males, aged 18-56 years (34.4+/-12.7). Preoperatively, pain was present in 84.4%, tenderness to percussion in 53.3%, and periapical radiolucency in 24.4% teeth. Forty percent had irreversible pulpitis and 60% had apical periodontitis. Post-operatively, pain reduced to 51.1% on day 1, 15.5% at 1 week, and 0% for the rest of the period. Tenderness to percussion reduced to 15.6% at 1 week and 0% by 1 month. Periapical radiolucency reduced to 9.5% at 6 months. Favorable outcome of 33.3% was recorded on day 1 and increased to 90.5% at 6 months. Six months success rate for teeth which had irreversible pulpitis was 100% and 83.3% for apical periodontitis. The mean time needed to complete a single visit RCT ranged from 77 min for a tooth having one canal to 132 min for one having four canals. CONCLUSION: Single visit RCT is a viable treatment option for teeth having irreversible pulpitis or apical periodontitis irrespective of tooth type or number of canals. CLINICAL SIGNIFICANCE: A lot of patients are lost to follow-up visits for teeth requiring RCT once the pulp is extirpated at the first visit due to cessation of pain, subsequently leading to treatment failure. Single visit endodontics eliminates the need for follow-up visits and improves treatment prognosis.
Asunto(s)
Enfermedades de la Pulpa Dental/cirugía , Periodontitis Periapical/cirugía , Tratamiento del Conducto Radicular/métodos , Tratamiento del Conducto Radicular/estadística & datos numéricos , Adolescente , Adulto , Enfermedades de la Pulpa Dental/epidemiología , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Visita a Consultorio Médico , Dolor Postoperatorio/epidemiología , Periodontitis Periapical/epidemiología , Estudios Prospectivos , Tratamiento del Conducto Radicular/efectos adversos , Resultado del Tratamiento , Adulto JovenRESUMEN
BACKGROUND: Tooth bleaching (whitening) is a conservative and cost effective treatment of discoloured teeth. OBJECTIVES: The purpose of this study was to evaluate the clinical efficacy and safety of 16% and 35% carbamide peroxide as in-office bleaching agents. METHODS: Thirty adult subjects who desired to whiten their discoloured teeth were enrolled in the study. Carbamide bleaching agents, in concentrations of 16% and 35%, were used to whiten their teeth employing the spilt-arch technique/half-mouth design using vacuum formed half-arch matrix seated over the maxillary teeth for a one-hour session per week for two weeks. Outcome was monitored with Vita shade guide and photographs. RESULTS: Twenty females and ten males, ages 18-43 years, with mean age 27.83 years, participated in the study. Tooth whitening was obtained in all subjects. Shade tab movement of 2-4 shades and 4-6 shades was recorded at first sessions then 3-5 and 5-9 shades at second sessions for 16% and 35% concentrations of carbamide peroxide respectively. The bleaching outcome was significantly better with the 35% concentration of carbamide peroxide while transient tooth sensitivity was observed in both concentrations ofthe bleaching agents. CONCLUSION: Carbamide peroxide in 16% and 35% concentration are effective and safe for bleaching discoloured vital teeth, however, 35% concentration gave significantly more lightening effect without additional side effects compared to 16% concentration.
Asunto(s)
Peróxidos/química , Peróxidos/uso terapéutico , Blanqueadores Dentales/química , Blanqueadores Dentales/uso terapéutico , Blanqueamiento de Dientes/métodos , Urea/análogos & derivados , Adolescente , Adulto , Peróxido de Carbamida , Sensibilidad de la Dentina/inducido químicamente , Femenino , Humanos , Masculino , Peróxidos/efectos adversos , Blanqueadores Dentales/efectos adversos , Urea/efectos adversos , Urea/química , Urea/uso terapéutico , Adulto JovenRESUMEN
BACKGROUND: The majority of the studies on non carious cervical lesions (NCCLs) dealt with characteristics of NCCLs without identifying patient related factors associated with them. OBJECTIVE: The basis of this study to identify these factors and to see if there are any association with the findings. METHOD: This study was conducted among 34 patients referred to the conservative clinic of the Lagos University Teaching Hospital, Idi-araba, Lagos. Questions regarding patient's complaints, dietary habits and toothcleaning techniques were asked and correlated with the occurrence and severity of NCCLs clinically. RESULT: Over a third, (41.2%) of the subjects presented with dentine sensitivity resulting in pain. Fifty percent (50%) of the patients were on one form of medication or the other. Out of this number, 50% habitually chewed vitamin C tablets. With respect to diet, 61.8%, 58.8% and 47.1% of the patients were on diet rich in fruits, soft drinks and fruit juices respectively. The degree of severity(extensiveness) of lesions significantly increases with age of patient (p = 0.001). Tooth cleaning habits played an important role in the occurrence, distribution and pattern of NCCLs. There was association between the tooth cleaning technique used and the extensiveness and distribution of the lesions. The horizontal technique accounted for 54.7% of lower jaw lesions while 63.7% and 55.8% of lesions found in the vertical and mixed (circular) techniques respectively were found in the upperjaw. CONCLUSION: Awareness of the multifactorial etiology in noncarious cervical lesions may help the clinician to formulate an appropriate treatment plan and preventive strategies in the management of NCCLs.
Asunto(s)
Dieta , Higiene Bucal/métodos , Cuello del Diente/patología , Enfermedades Dentales/epidemiología , Adulto , Factores de Edad , Ácido Ascórbico/administración & dosificación , Ácido Ascórbico/efectos adversos , Utilización de Medicamentos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Gravedad del Paciente , Factores Sexuales , Enfermedades Dentales/etiologíaRESUMEN
BACKGROUND: Controversies rages in the literature as to the characteristics of non carious cervical lesions (NCCLs) in terms of the location and its severity. OBJECTIVE: The study is to investigate the characteristics of NCCLs in adult patients who had a high incidence in them and to see if there are any association with the findings. Methods : The author examined 356 teeth with NCCLs in 34 subjects (male and female aged 22-75 years). The characteristics were based on the location of the lesion and the size (shape, extensiveness and depth). RESULTS: In terms of the location, 61.2% were located on the posterior teeth, and 55.9% on the maxillary teeth. The first premolars (25.8%) and canines (19.4%) were affected most often, followed by the first molars (16.9%) and second premolars (13.8%). There was slight right side preponderance (50.3%) and more lesions in the male subjects (67.4%). Patients tended to be older, with 76.4% in the 40 years and older age group. In terms of the size of the lesion, 75.0% of the lesion had angular shape of < 135 (wedge), 70.2% had axial depth of 1-2 mm, and 51.7% had occlusogingival width (extensiveness) of 2-3.9mm (small). There was association between gender and the severity (extensiveness) of the lesion. The severity (shape and extensiveness) of NCCL was associated with age. There was strong association between the severity of NCCL and site of the lesion (jaws). CONCLUSION: The authors found that NCCLs were significantly related to age. The posterior maxillary teeth especially the first premolars followed by the canines were the teeth commonly involved. No great difference in incidence was found between the right and left sides as a result of right or left hand dexterity. Awareness of a multifactorial etiology in noncarious cervical lesions may help the clinician to formulate an appropriate treatment plan for the patient. In addition, these characteristics help identify which teeth and patients that are more susceptible.
Asunto(s)
Desgaste de los Dientes/epidemiología , Adulto , Factores de Edad , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Nigeria/epidemiología , Factores Sexuales , Desgaste de los Dientes/clasificación , Desgaste de los Dientes/diagnósticoRESUMEN
AIM: To categorize the endodontically treated teeth according to the extent of coronal tissue loss in order to determine the appropriate restoration required. MATERIAL AND METHODS: A two year descriptive study was done at the Conservative Clinic of the Department of Restorative Dentistry, Dental Centre, University College Hospital, Ibadan. Successful endodontically treated teeth were assessed and categorized according to the extent of tissue loss based on standard criteria proposed by Smith and Schuman. RESULTS: Two hundred and ninety endodontically treated teeth were assessed for success both clinically and radiographically. Eighty (27.6%) were anterior teeth, 78 (26.9%) were premolars while 132 (45.5%) were molars. Dental caries was found to be the most common (61.4%) indication for endodontic treatment and caused more coronal tissue damage (moderate and significant) when compared with other indications for endodontic treatment. Two hundred and twenty seven (78.3%) endodontically treated teeth had moderate coronal tissue loss, 41 (14.1%) had minimal damage while 22 (7.6%) had significant tissue damage. Dental caries was the most common indication for endodontic treatment of the posterior teeth while trauma was the most common indication for the anterior teeth. CONCLUSION: Majority of the endodontically treated teeth that were evaluated for tissue loss had moderate coronal tissue damage. It is therefore recommended that proper and prompt evaluation of the remaining coronal tooth tissue following successful endodontic treatment be carried out in order to determine the appropriate definitive restoration required that will be easy for the clinician and less expensive to the patients.
Asunto(s)
Caries Dental/patología , Corona del Diente/patología , Traumatismos de los Dientes/patología , Diente no Vital/patología , Adolescente , Adulto , Anciano , Diente Premolar/diagnóstico por imagen , Diente Premolar/patología , Caries Dental/diagnóstico por imagen , Restauración Dental Permanente/métodos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Diente Molar/diagnóstico por imagen , Diente Molar/patología , Estudios Prospectivos , Radiografía , Diente/diagnóstico por imagen , Diente/patología , Corona del Diente/diagnóstico por imagen , Traumatismos de los Dientes/diagnóstico por imagen , Diente no Vital/diagnóstico por imagen , Adulto JovenRESUMEN
BACKGROUND: Dentists need to be aware of the management of dentine sensitivity in view of its high prevalence. OBJECTIVE: The study is to determine by questionnaire the perception of dentine hypersensitivity (DH) and its management by Nigerian Dentists. METHOD: A structured questionnaire was used to collect data from 176 Nigerian Dentists who attended professional dental workshops in Lagos, Ife and Jos, Nigeria. RESULTS: The majority (73.3%) of the responding dentists claimed to see patients with DH. Nearly half (45.1%) of the dentists mentioned cold as the commonest stimulus evoking pain in DH while 56.8% could correctly identified the hydrodynamic theory as the commonest theory of tooth hypersensitivity. Multifactorial aetiology identified as causing DH included tooth wear lesions, periodontal causes and bruxism. Treatment options suggested varies but non-invasive was mentioned more than the invasive techniques. Sensodyne toothpaste was the commonest desensitising paste mentioned. The knowledge of Nigerian Dentists was found to be associated with the specialty of the practitioners (p = 0.0004). CONCLUSION: Dental Practitioners, especially the General Dental Practitioners should be enthusiastic in updating their knowledge of DH and the management. Prevention of DH by the Patients and the Dentists should be emphasised.
Asunto(s)
Sensibilidad de la Dentina/prevención & control , Pautas de la Práctica en Odontología/estadística & datos numéricos , Adulto , Sensibilidad de la Dentina/epidemiología , Humanos , Persona de Mediana Edad , Nigeria/epidemiología , Prevalencia , Encuestas y CuestionariosRESUMEN
BACKGROUND: It has been observed that due to the cheaper cost of dental plaster compared to dental stone, casts on which most of the dental prostheses and appliances were being fabricated in various laboratories were often mixtures of dental stone and dental plaster in order to reduce production cost. OBJECTIVE: To evaluate the dimensional stability of various combinations of Dental Stone and Dental Plaster mixtures used to make dental casts. METHODS: Alginate impressions of a master model of truncated metal cones were made and casts were produced by pouring with various combinations of dental stone and dental plaster mixtures. The linear dimensional differences between the inter-abutment distances on the casts were measured with an electronic caliper. One sample t-test and percentage differences were calculated. RESULTS: Dimensional variations for the distances measured using either 50% dental stone or 25% dental stone with plaster were statistically significant (p d" 0.05). Mixture of 75% dental stone and 25% dental plaster produced casts with no statistically significant dimensional variation from the master model (p e" 0.05). CONCLUSION: A mixture of 75% dental stone and 25% dental plaster could be used for procedures not requiring very accurate replica like mounting of teeth for dental training and for study models.
Asunto(s)
Técnica de Colado Dental/instrumentación , Materiales Dentales/química , Alginatos/química , Sulfato de Calcio/química , Ácido Glucurónico/química , Ácidos Hexurónicos/química , HumanosRESUMEN
OBJECTIVE: To evaluate the mechanical and physical properties of a micro-hybrid resin composite used in adult posterior restorations. MATERIALS AND METHODS: A micro-hybrid, light curing resin composite Unolux BCS Composite Restorative, (UnoDent, England) was used to restore 74 carious classes I and II cavities on posterior teeth of 62 adult patients. The restorations were evaluated immediately following placement (Baseline), at 1 week, 3months, 6months and 12months using the United States Public Health Service Criteria/Modified Ryge criteria for direct evaluation. Color matching, marginal stains and adaptation, wear and surface texture were evaluated. Ranging from best to the worst, the ratings were, Alfa, Bravo and Charlie. RESULTS: 58 restorations were available for review at the 12 th month evaluation, 15 patients bearing 21.6% of the restorations were lost to recall. Colour match scores were 89.6% Alpha at baseline and 74.1% at 12-month review. Marginal staining were 100% Alpha at baseline and 98.3% Alpha at the end of the evaluation period. Marginal adaptation at baseline was 100% Alpha this value dropped to 94.8% by the 12th month. Anatomical wear scores were 100% Alpha at baseline and scores dropped to 93.1 % at the 12-month evaluation. At baseline, Alpha scores for Surface texture were 100%. A drop in Alpha scores to 93.1 % at the first week review was maintained till the 12 month. CONCLUSION: Carefully controlled placement of micro-hybrid resin composite using the total etch and type 2 (one-bottle) adhesive can produce satisfactory posterior restorations on permanent teeth.
Asunto(s)
Resinas Compuestas/química , Restauración Dental Permanente/clasificación , Grabado Ácido Dental , Adulto , Caries Dental/etiología , Adaptación Marginal Dental , Fracaso de la Restauración Dental , Alisadura de la Restauración Dental , Restauración Dental Permanente/métodos , Recubrimientos Dentinarios , Femenino , Estudios de Seguimiento , Humanos , Nigeria , Distribución por Sexo , Resultado del TratamientoRESUMEN
OBJECTIVE: To evaluate post-operative sensitivity and secondary caries associated with posterior composite restoration. MATERIALS AND METHODS: The study involved restoration of occlusal and proximo-occlusal caries on premolars and molars of 62 patients seen at the out-patient clinic of the restorative department of the Lagos University Teaching Hospital. The restorations were completed with a micro-hybrid light curing resin composite (Unolux BCS, UnoDent, England). Following total etch procedure and use of a type 2 (5th generation/one-bottle) adhesive. The USPHSC or modified Ryge criteria was employed for direct evaluation of the restorations over the 12 month period. RESULTS: Post-operative sensitivity was 3.5% Bravo at baseline and 1.7% Bravo at 12 months. No significant change in result was recorded for post-operative sensitivity at the end of the evaluation period. 100% was recorded for the absence of secondary caries throughout the evaluation period up till the 6 th month when a failed restoration scored 1.7% Bravo. At 12 months Alpha scores for secondary caries was 98.3%. CONCLUSION: Post-operative sensitivity was kept to a minimum and there were no occurrences of secondary caries.
Asunto(s)
Resinas Compuestas , Caries Dental/clasificación , Grabado Dental/métodos , Fracaso de la Restauración Dental , Restauración Dental Permanente/métodos , Sensibilidad de la Dentina , Adulto , Caries Dental/etiología , Preparación de la Cavidad Dental , Restauración Dental Permanente/clasificación , Recubrimientos Dentinarios , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Diente Molar , Nigeria , Periodo Posoperatorio , Resultado del TratamientoRESUMEN
Objective: To evaluate the mechanical and physical properties of a micro-hybrid resin composite used in adult posterior restorations Materials and Methods: A micro-hybrid; light curing resin composite Unolux BCS Composite Restorative; (UnoDent; England) was used to restore 74 carious classes I and II cavities on posterior teeth of 62 adult patients. The restorations were evaluated immediately following placement (Baseline); at 1 week; 3months; 6months and 12months using the United States Public Health Service Criteria/Modified Ryge criteria for direct evaluation. Color matching; marginal stains and adaptation; wear and surface texture were evaluated. Ranging from best to the worst; the ratings were; Alfa; Bravo and Charlie. Results: 58 restorations were available for review at the 12 th month evaluation; 15 patients bearing 21.6of the restorations were lost to recall. Colour match scores were 89.6Alpha at baseline and 74.1at 12-month review. Marginal staining were 100Alpha at baseline and 98.3Alpha at the end of the evaluation period. Marginal adaptation at baseline was 100Alpha this value dropped to 94.8by the 12th month. Anatomical wear scores were 100Alpha at baseline and scores dropped to 93.1at the 12-month evaluation. At baseline; Alpha scores for Surface texture were 100. A drop in Alpha scores to 93.1at the first week review was maintained till the 12 month. Conclusion: Carefully controlled placement of micro-hybrid resin composite using the total etch and type 2 (one-bottle) adhesive can produce satisfactory posterior restorations on permanent teeth
Asunto(s)
Adulto , Resinas Compuestas , Estudio de Evaluación , Propiedades de Superficie , DienteRESUMEN
Objective: To evaluate post-operative sensitivity and secondary caries associated with posterior composite restoration. Materials and Methods: The study involved restoration of occlusal and proximo-occlusal caries on premolars and molars of 62 patients seen at the out-patient clinic of the restorative department of the Lagos University Teaching Hospital. The restorations were completed with a micro-hybrid light curing resin composite (Unolux BCS; UnoDent; England). Following total etch procedure and use of a type 2 (5th generation/one-bottle) adhesive. The USPHSC or modified Ryge criteria was employed for direct evaluation of the restorations over the 12 month period. Results: Post-operative sensitivity was 3.5Bravo at baseline and 1.7Bravo at 12 months. No significant change in result was recorded for post-operative sensitivity at the end of the evaluation period. 100was recorded for the absence of secondary caries throughout the evaluation period up till the 6 th month when a failed restoration scored 1.7Bravo. At 12 months Alpha scores for secondary caries was 98.3. Conclusion: Post-operative sensitivity was kept to a minimum and there were no occurrences of secondary caries
Asunto(s)
Caries Dental , Sensibilidad de la Dentina , Curación por Luz de Adhesivos Dentales , Nigeria , Periodo PosoperatorioRESUMEN
BACKGROUND: All-in one adhesive systems reduce the number of steps and thus possible soures of error that may occur in clinical wage of adhesives, it is hoped that they also have good clinical performance. OBJECTIVE: To evaluate the clinical performance of a self-etch adhesive system--Adper's Prompt L-Pop in non-carious cervical lesions over a six months period. METHOD: One hundred and eighty-one (181) restorations were placed by one operator for 35 patients. The self-etch adhesive was applied to the cavity and composite was used to restore the teeth. The restorations were evaluated at baseline, 3 months and 6 months according to the modified Ryge's criteria. Restorations were monitored for postoperative sensitivity, retention rates and marginal adaptation. RESULTS: At six months, 160 restorations were available for evaluation in 32 patients. The retention rate was 96.3%, postoperative sensitivity was scored Alpha for all restorations (no sensitivity), and 3.7% restorations had marginal adaptation failure at six months. CONCLUSION: The adhesive system tested exhibited very good clinical performance at the end of six months.
Asunto(s)
Adhesivos , Caries Dental/terapia , Grabado Dental/métodos , Restauración Dental Permanente/métodos , Cementos de Resina/uso terapéutico , Adulto , Anciano , Recubrimiento Dental Adhesivo , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Cuello del Diente , Enfermedades Dentales/terapia , Resultado del Tratamiento , Adulto JovenRESUMEN
Background: All-in one adhesive systems reduce the number of steps and thus possible soures of error that may occur in clinical wage of adhesives; it is hoped that they also have good clinical performance. Objective: To evaluate the clinical performance of a selfetch adhesive system - Adper's Prompt L-Pop in noncarious cervical lesions over a six months period. Method: One hundred and eighty-one (181) restorations were placed by one operator for 35 patients. The self-etch adhesive was applied to the cavity and composite was used to restore the teeth. The restorations were evaluated at baseline; 3 months and 6 months according to the modified Ryge's criteria. Restorations were monitored for postoperative sensitivity; retention rates and marginal adaptation. Results: At six months; 160 restorations were available for evaluation in 32 patients. The retention rate was 96.3; postoperative sensitivity was scored Alpha for all restorations (no sensitivity); and 3.7restorations had marginal adaptation failure at six months. Conclusion: The adhesive system tested exhibited very good clinical performance at the end of six months
Asunto(s)
Adhesivos , Evaluación de Procesos y Resultados en Atención de SaludRESUMEN
OBJECTIVE: To determine the dimensional stability of alginate impressions poured at varying time intervals in a tropical environment. MATERIALS AND METHODS: Alginate impressions of a master model of truncated metal cones were made and poured at varying time intervals of 5 minutes, 30 minutes, 1 hour, 2 hours and 4hours. The liner dimensional differences between the master cast and stone casts of alginate impressions poured at varying time intervals was determined. RESULTS: Although, there was observed increasing percentage differences with increasing length of time before pouring of the cast for all the inter-abutment distances measured, there was no statistical significant difference in dimension of the cast at ten minutes for all the distances measured except distance D with mean 50.23 and p value 0.010 while there were statistical significant changes observed at all the other time groups and distances. CONCLUSION: Alginate impressions should be cast within 10 minutes although, casts obtained from impressions stored by covering with wet gauze as is commonly done, for not more than 30 minutes will be clinically usable.
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Alginatos/normas , Materiales de Impresión Dental/normas , Técnica de Impresión Dental/normas , Pilares Dentales , Humanos , Humedad , Ensayo de Materiales , Nigeria , Temperatura , Factores de Tiempo , Clima TropicalRESUMEN
OBJECTIVE: To determine and compare the dimensional stability of alginate impressions disinfected with Sodium hypochlorite using the spray and immersion methods. METHODOLOGY: Alginate impressions of a master model of truncated metal cones were made and disinfected with 1% sodium hypochlorite constituted from 3.5% household bleach using the spray and immersion technique for 10; 20 and 30 minutes. Impressions were cast in dental stone and the linear dimensional differences between the inter-abutment distances were measured with an electronic caliper. One sample T test and percentage differences were calculated. RESULT: There were no statistically significant differences in dimensions of alginate impressions of the control and those disinfected by either spraying or immersion methods when compared with the master model at 10 minutes. However, there was a statistically significant difference at 20 and 30 minutes. The spray technique showed the least percentage difference from the master model. CONCLUSION: Disinfection of alginate impressions with 1% sodium hypochlorite constituted from commercially available household bleach by the spray or immersion techniques for ten minutes will produce casts with minimal dimensional changes.
Asunto(s)
Alginatos/química , Materiales de Impresión Dental/química , Desinfección/métodos , Hipoclorito de Sodio/química , Desinfectantes/química , Ácido Glucurónico/química , Ácidos Hexurónicos/química , Humanos , Ensayo de Materiales/métodosRESUMEN
AIM: Maxillectomy often results in a high level of morbidity with significant psychological and functional implications for the patient. Such disabilities include inability to masticate, deglutition, and speech disturbance. Unfortunately, little is known about the nature of the speech disturbance and the influence of the class of surgical defects in this group of patients. The aims of the present study were to assess the effectiveness of the maxillary obturator as a speech rehabilitation aid and to examine the influence of the classes of surgical defects on speech intelligibility (SI). MATERIALS AND METHODS: Twelve patients aged between 18 and 60 years with surgically acquired partial maxillary defects were included in this study. The patients were given immediate surgical obturators six to ten days after surgery, which were then converted to interim obturators by relining with tissue conditioner. Interim prostheses were used for two to three months until healing and resorption were found satisfactory after which the definitive obturators were fabricated. The SI test described by Plank et al. and Wheeler et al. was employed in this study. There were significant improvements in the mean SI score from 59.8% without prosthetic obturation, to 89.2% following interim obturation, and 94.7% following definitive obturation (p<0.005). Nine patients (75%) had class I surgical defects, two patients (16.67%) had class II defects, while only one patient (8.33%) had a class VI surgical defect. None of the patients had class III, IV, or class V surgical defects. There was an improvement in the SI score from class I to class VI without obturation, after insertion of interim obturator, and after insertion of the definitive obturator. CONCLUSION: Results support the widely held view that the maxillary obturator is a useful speech rehabilitation aid. It also shows immediate, interim, and definitive obturators are all important in the speech rehabilitation of patients with surgically acquired maxillary defects. Moreover SI is affected by the class of defect.
Asunto(s)
Maxilar/cirugía , Neoplasias Maxilares/rehabilitación , Procedimientos Quirúrgicos Orales/rehabilitación , Obturadores Palatinos , Inteligibilidad del Habla , Adolescente , Adulto , Anciano , Niño , Diseño de Prótesis Dental , Femenino , Humanos , Masculino , Neoplasias Maxilares/cirugía , Persona de Mediana Edad , Nigeria , Evaluación de Resultado en la Atención de Salud , Acondicionamiento de Tejidos DentalesRESUMEN
"Background: Improved and satisfactory facial aesthetics following prosthetic obturation of surgically acquired partial maxillary defect had been reported in several case reports involving one patient or two; but this number is grossly inadequate for a reliable deduction. Besides; literature is scarce on the relationship between facial aesthetics and the ""class of surgical defect"". Surgically acquired partial maxillary defect has earlier been classified into classes I to VI. Aims: To assess the perception of patients regarding their facial aesthetics following prosthetic obturation and to relate this finding to their classes of surgical defects. Methods: This prospective study was conducted in a tertiary dental centre; University College Hospital; Ibadan. Consecutive patients who had maxillary resection resulting in partial maxillary defect seen over a period of two years were admitted to the study."
Asunto(s)
Fracturas Óseas , Enfermedades Maxilares/cirugíaRESUMEN
"Background: Improved and satisfactory facial aesthetics following prosthetic obturation of surgically acquired partial maxillary defect had been reported in several case reports involving one patient or two; but this number is grossly inadequate for a reliable deduction. Besides; literature is scarce on the relationship between facial aesthetics and the ""class of surgical defect"". Surgically acquired partial maxillary defect has earlier been classified into classes I to VI. Aims: To assess the perception of patients regarding their facial aesthetics following prosthetic obturation and to relate this finding to their classes of surgical defects. Methods: This prospective study was conducted in a tertiary dental centre; University College Hospital; Ibadan. Consecutive patients who had maxillary resection resulting in partial maxillary defect seen over a period of two years were admitted to the study."
Asunto(s)
Fracturas Óseas , Enfermedades Maxilares/cirugíaRESUMEN
Objectives: The study was done to determine the extent of coronal tissue loss of endodontically treated teeth. Results: 176 teeth of 168 patients that completed endodontic treatment to obturation stage were evaluated for coronal tissue loss. The teeth included fifty-five anterior teeth (31.3); seventy-three premolars (41.5) and forty-eight molars (27.3). Majority (43.2) of the root filled teeth evaluated for coronal damage had minimal coronal tissue damage; followed by teeth with significant tissue damage (33.5); and lastly; teeth with moderate tissue damage (23.3).Conclusions: The result of this study revealed that most endodontically treated teeth had minimal coronal tissue loss and therefore can be managed with conservative restorative treatment options