Restauración onlay usando técnica semi-directa con resina compuesta: reporte de un caso

Posterior teeth restorations have changed the contemporary treatment philosophy influenced by the aesthetic demand of patients, progress of adhesive material science and techniques for preservation and rehabilitation of affected teeth by dental caries and trauma. The development of Onlay restorations with semi-direct technique in endodontically teeth treated aims to preserve the remaining surfaces, to reduce the possibility of fracture and polymerization shrinkage. In addition, better restoration adaptation and marginal seal, resistance to wear and dimensional stability are achieved. This case reports the rehabilitation of an endodontically treated permanent maxillary first molar in a 13 years old- patient who attended the Araraquara School of Dentistry, Brazil, using Miris 2 Composite resin with semi-direct technique and obtaining an aesthetic and functional restoration in a single appointment. The fundaments and clinical guidelines of the procedure are detailed, based on the review of the literature that supports this conservative treatment.

Erupção dental em pacas (Agouti paca) criadas em cativeiro

Fez-se o acompanhamento radiográfico mensal da erupção dental de cinco fêmeas e sete machos da espécie Agouti paca durante 30 meses. Os animais foram radiografados mês-a-mês. As pacas nasceram com três dentes em cada hemiarcada dental, um incisivo de crescimento contínuo por toda a vida, um pré-molar decíduo (o único que é decíduo) e um molar. No quarto mês houve a erupção do segundo molar. O nivelamento da superfície de oclusão dos dentes inferiores ocorreu no sexto mês e o dos superiores ao redor do nono mês. No 14° mês, houve o início da erupção do terceiro molar e, no 16° mês, a evidenciação radiográfica do pré-molar permanente, ainda com preservação de correspondente decíduo. No 21° mês, ocorreu o nivelamento da superfície de oclusão dos quatro dentes superiores e inferiores. Entre o 22° e o 24° mês, iniciou-se a queda dos pré-molares decíduos inferiores e, entre o 23º e o 24° mês, a dos superiores. Entre o 24º e o 25º mês, a superfície de oclusão dos dentes inferiores estava nivelada, e a dos dentes superiores aconteceu no 27º mês.

Estudio radiográfico do desenvolvimento da dentição permanente de crianças brasileiras com idade cronológica variando entre 84 e 131 meses.

With the help of orthopantomograms we analyse the tooth development beside body weight and height from Brazilian healthy boys and girls. So, their dental age were compared to their chronological age. The results of this investigation, according to the methodology employed, indicated that: 1. girls showed accelerated formation of permanent teeth and mean values of dental age higher than boys; 2. the mean values of dental age in girls were higher than their chronological age in all groups; 3. the teeth development stages were appropriate in assessment of the degree of physiological maturity of a growing child.

Estudo clínico comparativo de um selante à base de ionômero de vidro e um verniz fluoretado em primeiro molar permanente recém irrompido de crianças com e sem experiência de cárie dentária

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação do traumatismo em dente decíduo e da seqüela no dente permanente sucessor

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito transversal da placa lábio-ativa aberta e fixa associada à extensão lingual de canino decíduo a primeiro molar permanente: estudo em modelos digitais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desgaste superficial do esmalte dental após microabrasão in vitro

The aim of this study was to investigate the enamel wear permanent teeth after plastic stick or low speed rubber cup microabrasion. Ten permanent molars were selected to evaluate enamel wear which were sectioned into mesial and distal halves. Each half of the molars was randomly assigned to one of two experimental groups (n = 10) according to the enamel microabrasion technique: plastic stick (GE) or rubber cup (GT). In both the groups, the enamel was submitted to 10 applications of an abrasive paste comprised of 35% phosphoric acid and pumice powder. The paste was applied for 20 seconds under a pressure of 30 g using the instrument defined for each group (plastic stick or rubber cup). The specimens were evaluated under a stereomicroscope connected to a computer. The enamel wear no was statistically different between GE and GT, which presented a mean wear of 304.74 µm (21.20%) and 338.35 µm (22.75%). In conclusion, superficial enamel wear was seen for both the groups, independent of the technique used for the accomplishment of the microabrasion.

Dentinogenesis imperfecta type II: approach for dental treatment

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Métodos preventivos em primeiro molar permanente de crianças com experiência de cárie dentária: estudo clínico comparativo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Multidisciplinary approach in the teaching of dental sculpture and anatomy

The purpose of the Dental Sculpture and Anatomy discipline is to introduce undergraduate students to the study of the anatomic and morphological characteristics of permanent and primary human dentition, through classes, books and cognitive and psychomotor activities. This discipline supports the teaching of specific knowledge necessary for a more extensive education, involving interdisciplinarity as a means of knowledge exchange among several areas of dentistry, to achieve comprehensive professional education. Students must recognize the dental morphology from samples of preserved teeth, and reproduce the morphology through three-dimensional models made of stone or wax blocks. In this article, the authors describe the process for producing teeth collars and macro dental models made of stone, their importance and benefits of utilization. The purpose of the study was to encourage the teaching of Dental Sculpture and Anatomy toundergraduate students of the Bauru School of Dentistry, University of Sao Paulo, through activities that would associate theory, practice and the development of manual skills.

Mensuração da profundidade da porção lateral da fossa mandibular, em imagens radiográficas da ATM, obtidas pela técnica transcraniana, em pacientes com dentição decídua, mista e permanente

The author has verified the average depth of the mandibular fossa, in the X-ray image, using the oblique lateral transcranial technique from the right and left sides samples of each patient, which included a total of 176 patients, 87 male and 89 female. The patients were in following phases: deciduous dentítion (the patients had only deciduous teeth in the oral cavity or, if they had any permanent teeth, they could not be in occlusion), mixed dentition (the patients presented deciduous and permanent in the oral cavity) and permanent dentition (the patients had only permanent teeth in the oral cavity), until the eruption of the permanent third molars, in the region from São José dos Campos. São Paulo. Brazil. The patients were under treatment at the Dental School. UNESP (São Paulo State University). ln order to measure the depth of the mandibular fossa in millimeters an imaginary line was traced on the X-ray image, perpendicular to the other line that served as a reference, which was traced from the botton part of the articular eminence up to the tympanosquamous fissure. After the data were obtained and put in a data sheet, they underwent statistical analysis. The results showed that, in the average, the depth of the mandibular fossa in masculine sex is non-statistically signíficant larger than what was observed in feminíne sex, and the right side is larger than the left side, with significant statistical differences. However, only in permanent dentition, in masculine sex, the depth of the mandibular fossa on the right side is larger than on the left side with significant statistical differences

Pertubation du développement d'une incisive permanente incluse due à un traumatisme de la dent primire

Les anomalies du développement des dents permanentes peuvent être dues à un traumatisme des dents primaires, étant donné la proximité de la racine des dents primaires avec les dents permanentes sous-jacentes. Nous décrivons le cas d'un garçon de 14 mois qui a été dirigé vers la clinique pédiatrique de l'École de médecine dentaire de l'Universidad Estadual Paulista d'Araçatuba, au Brésil, après avoir subi un grave traumatisme qui a causé l'intrusion de l'incisive centrale droite primaire. L'examen radiographique réalisé 4 ans après le traumatisme a révélé un changement morphologique évolutif dans le germe de la dent permanente. Au moment de son éruption, l'incisive centrale permanente présentait une malformation coronaire avec hypoplasie de l'émail. Nous avons conclu qu'un suivi radiographique est indiqué après un traumatisme afin de surveiller les séquelles qui peuvent survenir dans les dents permanentes, même avant leur éruption.