RESUMEN
ABSTRACT: The aim of this study was to identify the incidence of fractures in single crowns placed in individuals with chronic tooth wear. The sample selection was performed based on the evaluation of 218 patient records rehabilitated with single crowns placed by the same professional from a private clinic. After exclusion criteria, 43 individuals (18 males and 25 females) were included and a total of 112 single crowns distributed in both jaws. Three ceramic systems were evaluated: 34 feldspathic all-ceramic, 38 metal-ceramic with a core in gold electropositive alloy, and 40 In-Ceram Alumina. The intraoral photograph analysis adopted a diagnosis method of tooth wear according to the morphological variations of the teeth. Of the 112 crowns evaluated, 47 were placed in male and 65 in female patients, aged between 21 to 74 years (mean 27.5 years old). The variables gender (p = 0.83), presence of chronic tooth wear (p = 0.91), ceramic system (p = 0.24) and crown location (p = 0.86) did not present a statistically difference. However, the variables pulp vitality (p = 0.04) and survi val time (p = 0.01) presented a statistically significant difference. The evaluated ceramic systems can be considered as alternativ es of restorative material, even in individuals with clinical characteristics suggestive of chronic tooth wear.
RESUMEN: El objetivo de este estudio fue identificar la incidencia de fracturas en coronas individuales colocadas en individuos con desgaste dental crónico. La selección de la muestra se realizó en base a la evaluación de 218 registros de pacientes rehabilitados con coronas individuales colocadas entre 1999 y 2009 por el mismo profesional de una clínica privada. Después de analizar los criterios de exclusión, se incluyeron 43 individuos (18 hombres y 25 mujeres) y un total de 112 coronas individuales distribuidas en ambas mandíbulas. Este estudio evaluó coronas hechas de tres sistemas cerámicos: 34 de cerámica totalmente feldespática, 38 de cerámica de metal con un núcleo de aleación electropositiva de oro y 40 de alúmina enceram. El análisis de la fotografía intraoral adoptó un método de diagnóstico del desgaste dental de acuerdo con las variaciones morfológicas de los dientes. De las 112 coronas evaluadas, 47 se colocaron en hombres y 65 en mujeres, con edades comprendidas entre 21 y 74 años (media de 27,5 años). Con respecto a las coronas individuales, las variables género (p = 0,83), presencia de desgaste dental crónico (p = 0,91), sistema cerámico (p = 0,24) y ubicación de la corona (p = 0,86) no presentaron una diferencia estadísticamente significativa. Sin embargo, las variables vitalidad pulpar (p = 0.04) y tiempo de supervivencia (p = 0.01) presentaron una diferencia estadísticamente significativa. Los sistemas cerámicos evaluados pueden considerarse como alternativas de material restaurador, incluso en individuos con características clínicas que sugieren desgaste dental crónico.
RESUMEN
Objective: to evaluate the prevalence of calcifications in the soft tissues of the cervical-facial region using cone beam computed tomography (CBCT) images. Material and Methods: two hundred and ten CBCT exames was analyzed by 01 examiner previously trained, with fild of view (FOV) of 16 x 13 cm and voxel of 0.25 mm, in ICAT Vision software (Imaging Science International, Hatfield, PA, USA) in coronal, axial and sagittal sections. The following calcifications were evaluated: tonsiloliths, sialolites, calcification of the styloid complex, calcified carotid atheromas, calcifications in laryngeal cartilages, calcified lymph nodes and osteoma cutis. The findings were tabulated according to the total of the sample, related to the gender, age group of the individuals. Results: Calcification of the styloid complex was the most frequent in the sample studied in both genres (39.04%), followed by the presence of tonsiloliths (19.52%), and calcified lymph nodes (6,67%). Conclusion: calcifications are frequent radiographic findings in CBCT and important for the diagnosis of some possible pathologies that do not present clinical symptoms (AU)
Objetivo: avaliar por meio de imagens de tomografia computadorizada de feixe cônico (TCFC) a prevalência de calcificações em tecidos moles da região cérvicofacial. Material e Métodos: os exames foram avaliados por um examinador, previamente treinado que avaliou 210 exames de TCFC, com campo de visão (FOV) de 16 x 13 cm e voxel de 0,25 mm. Os exames foram avaliados no software ICAT Vision (Imaging Science International, Hatfield, PA, Estados Unidos da América) em cortes coronais, axiais e sagitais. As seguintes calcificações foram avaliadas: tonsilolitos, sialolitos, calcificação do complexo estiloide, ateromas da carótida calcificados, calcificações na cartilagens laríngeas, nódulos linfáticos calcificados e osteoma cútis. Os achados foram tabulados de acordo com o total da amostra, relativos ao gênero e faixa etária dos indivíduos. Resultados: a calcificação do processo estiloide foi a mais frequente na amostra estudada em ambos os sexos, seguido da presença dos tonsilolitos e linfonodos calcificados. Conclusão: as calcificações de tecidos moles são achados radiográficos frequentes na TCFC e importantes para diagnósticos de algumas possíveis patologias que não apresentam sintomatologia clínica.(AU)