RESUMEN
BACKGROUND: Failure to replace a missing posterior tooth is assumed to result in host of adverse consequences, which include shifting of teeth and loss of alveolar bone support. METHODS: A retrospective longitudinal study (median follow-up period 6.9 years), using the radiographs of 111 patients who had an untreated bounded edentulous space, or BES, was conducted to determine the extent to which these adverse outcomes occurred. RESULTS: The majority of patients lost 1 millimeter or less of the distance between teeth adjacent to the space, extrusion of the opposing tooth was < or = 1 mm in 99 percent of the cases, and the amount of alveolar bone loss next to the adjacent teeth was < or = 1 mm in 83 percent of the cases. CONCLUSIONS: Within the follow-up time in this study, this group of patients did not exhibit the expected adverse consequences with either the frequency or severity generally assumed to be associated with nonreplacement of a single posterior tooth. CLINICAL IMPLICATIONS: These findings suggest that for the large majority of patients who experience a single-tooth posterior BES, immediate treatment may not be critical to the maintenance of arch stability. Instead, regular follow-up assessments to monitor change in stability and periodontal health may be warranted.
Asunto(s)
Pérdida de Hueso Alveolar/etiología , Arcada Parcialmente Edéntula/fisiopatología , Extracción Dental/efectos adversos , Migración del Diente/etiología , Adulto , Anciano , Anciano de 80 o más Años , Pérdida de Hueso Alveolar/diagnóstico por imagen , Diente Premolar/fisiología , Arco Dental/diagnóstico por imagen , Arco Dental/fisiopatología , Femenino , Humanos , Arcada Parcialmente Edéntula/diagnóstico por imagen , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Diente Molar/fisiología , Radiografía , Estudios Retrospectivos , Migración del Diente/diagnóstico por imagenRESUMEN
The common practice of rerestoring teeth has been termed the "cycle of rerestoration." Some researchers and clinicians have speculated that this cycle results in teeth receiving progressively larger restorations. In this study involving 1,337 decisions to replace existing restorations in posterior teeth, the authors noted that 70 percent of all recommendations resulted in an increased number of restored surfaces. This observed increase in restoration size raises questions about the effects of the rerestoration cycle on the health of a tooth and suggests that practitioners should attempt to avoid premature rerestoration since it could hasten the cycle.
Asunto(s)
Restauración Dental Permanente/efectos adversos , Adulto , Anciano , Toma de Decisiones , Caries Dental/diagnóstico , Caries Dental/terapia , Adaptación Marginal Dental , Restauración Dental Permanente/estadística & datos numéricos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pautas de la Práctica en Medicina , Reoperación , Medición de RiesgoRESUMEN
A technique has been presented for indirect fabrication of a cast post and core with the refractory material DVP. This method eliminates the need for developing full contoured patterns and their removal from the working cast for investment. Less time is required and the accuracy of the castings is improved.
Asunto(s)
Sulfato de Calcio , Coronas , Modelos Dentales , Técnica de Perno Muñón , Revestimiento para Colado Dental , Técnica de Impresión Dental , Diseño de Dentadura , HumanosRESUMEN
A technique for fabrication of custom shade tabs in tooth form has been presented. The finished product will be a series of custom shade tabs. Any temporary (provisional) resin material can be used.