RESUMEN
PURPOSE: To compare the advantages/disadvantages concerning patient subjective preferences of splints made with heat-cured acrylic (Splint Resin Polymer) or visible light-cured material. MATERIAL AND METHODS: A questionnaire was developed assessing: comfort, stability, fit, taste, occlusal contacts, lip seal, smoothness, hygiene, color stability, stain resistance, salivation level, gingival irritation, bulkiness and odor. 10 patients already treatment planned to receive splints, were chosen at random from the dental school. Splints made from the two types of materials were delivered to each patient to be used for 3 wks. The material to initially be used was chosen at random and the questionnaire was answered after each 3-wk period. RESULTS: The MacNemar's Chi-square test revealed that there was no statistical difference in patient preference between the two splint materials.
Asunto(s)
Resinas Acrílicas , Ferulas Oclusales , Satisfacción del Paciente , Resinas Acrílicas/química , Distribución de Chi-Cuadrado , Color , Oclusión Dental , Diseño de Equipo , Estudios de Seguimiento , Encía/patología , Calor , Humanos , Luz , Labio/anatomía & histología , Odorantes , Higiene Bucal , Polímeros/química , Salivación/fisiología , Propiedades de Superficie , Encuestas y Cuestionarios , Gusto/fisiologíaAsunto(s)
Recubrimiento Dental Adhesivo , Recubrimiento de la Cavidad Dental , Recubrimientos Dentinarios/química , Fluoruros/química , Cementos de Ionómero Vítreo/química , Resinas Acrílicas/química , Análisis de Varianza , Hidróxido de Calcio/química , Resinas Compuestas/química , Humanos , Hidroxiapatitas/química , Luz , Metacrilatos/química , Poliuretanos/química , Dióxido de Silicio/química , Fluoruro de Sodio/química , Resistencia a la Tracción , Uretano/análogos & derivados , Uretano/químicaAsunto(s)
Grabado Ácido Dental/métodos , Aleaciones de Cromo , Aleaciones Dentales , Recubrimiento Dental Adhesivo/métodos , Análisis del Estrés Dental , Dentadura Parcial Fija , Porcelana Dental , Diseño de Dentadura , Humanos , Microscopía Electrónica de Rastreo , Distribución Aleatoria , Propiedades de Superficie , Resistencia a la TracciónRESUMEN
A hybrid matrix combines the rigid and flexible properties of two different thicknesses of matrix bands for use in restoring the proximal surfaces of teeth.
Asunto(s)
Instrumentos Dentales , Restauración Dental Permanente/métodos , Bandas de Matriz , Restauración Dental Permanente/instrumentación , HumanosRESUMEN
Rubber dam retainers can be modified easily in the dental office to enable the dentist to isolate teeth with difficult restorative problems with the rubber dam. Isolation with the rubber dam enhances visibility and access and gives the dentist the opportunity to render safe, restorative care of high quality to the patient.
Asunto(s)
Operatoria Dental/instrumentación , Caries Dental/terapia , Diseño de Equipo , Humanos , Diente MolarRESUMEN
In mandibular molars, enamel dramatically increases in thickness at the buccal pit area and progresses occlusally due to an extensive concavity in the buccal dentinal core. In order to comply with the principles of operative dentistry, this anatomic variance dictates that, if the ultimate restoration is to be placed in dentin, the axial wall of a Class I buccal pit preparation should incline medially rather than follow the external contour of the tooth. The occlusal cavosurface angle of the preparation should be obtuse to coincide with enamel rod direction. Retention, when needed, should be placed at the mesio-axial and disto-axial line angles to avoid undermining occlusal intercuspal enamel, especially as the preparation approaches 2 mm occlusal to the buccal pit.
Asunto(s)
Preparación de la Cavidad Dental/métodos , Esmalte Dental/anatomía & histología , Diente Molar/anatomía & histología , Recubrimiento Dental Adhesivo , Humanos , MandíbulaAsunto(s)
Amalgama Dental , Restauración Dental Permanente/efectos adversos , Diente Molar/lesiones , Fracturas de los Dientes/etiología , Restauración Dental Permanente/métodos , Análisis del Estrés Dental , Humanos , Diente Molar/fisiopatología , Estrés Mecánico , Fracturas de los Dientes/fisiopatologíaRESUMEN
The finding that large occlusal Class I restorations weaken premolars is not confirmed for natural mandibular molars because no statistically significant difference was found in the mean loads needed to fracture mandibular molars that were unprepared, minimally prepared, or prepared with a large occlusal amalgam restorations. Similarly, there was no statistically significant change in the amount of force necessary to fracture natural mandibular molars prepared with sharp vs round internal line angles (a no. 56 vs a no. 330 bur). Duplication of the experiment in acrylic resin mandibular molars confirmed the results of a previous experiment by Re and Norling as well as the results relating to sharp vs round internal line angles found in this experiment on natural mandibular molars. Acrylic resin teeth of homogeneous shape and substance overcome some of the sampling problems inherent in obtaining suitable human teeth for testing purposes; however, further testing of this material is indicated.
