Tooth Fracture
Mostrando 13-24 de 61 artigos, teses e dissertações.
-
13. Influence of crosshead speed on failure load and failure mode of restored maxillary premolars
We analyzed the effect of the crosshead speed of an applied load on failure load and failure mode of restored human premolars. Fifty intact, noncarious human premolars were selected. Class II mesio-occlusodistal preparations were made with a water-cooled high-speed preparation machine, and the teeth were restored with composite resin. The specimens were divi
Braz. oral res.. Publicado em: 15/12/2015
-
14. Effect of high energy X-ray irradiation on the nano-mechanical properties of human enamel and dentine
Abstract Radiotherapy for malignancies in the head and neck can cause common complications that can result in tooth damage that are also known as radiation caries. The aim of this study was to examine damage to the surface topography and calculate changes in friction behavior and the nano-mechanical properties (elastic modulus, nanohardness and friction coef
Braz. oral res.. Publicado em: 15/12/2015
-
15. Case-control study on factors associated with crown fractures in the primary dentition
The purpose of the present study was to identify the factors associated with dental trauma in preschool children. This case-control study was nested in a population-based cross-sectional study involving a random sample of 301 children one to five years of age in the city of Diamantina, Brazil. The case group was made up of children with at least one fracture
Braz. oral res.. Publicado em: 16/06/2015
-
16. Detection of horizontal root fracture using four different protocols of cone-beam computed tomography
The purpose of this study was to analyze four different cone-beam computed tomography (CBCT) protocols to identify horizontal root fractures (HRF) in endodontically treated teeth, with or without the presence of a metallic post. Thirty extracted single-rooted human premolars were treated endodontically. Afterwards, an observer induced a horizontal fracture i
Braz. oral res.. Publicado em: 02/06/2015
-
17. Intraoperative accidents associated with surgical removal of third molars
Aim: To evaluate the prevalence of intraoperative accidents associated with extraction of third molars and identify possible risk factors. Methods: Prospective study with patients undergoing third molar surgery by residents of the Oral and Maxillofacial Surgery Service at the Federal University of Parana. Epidemiological data were collected from preoperative
Braz. J. Oral Sci.. Publicado em: 2014-12
-
18. Evaluation of technical quality and periapical health of root-filled teeth by using cone-beam CT
Objective This study aimed to assess the quality of root fillings, coronal restorations, complications of all root-filled teeth and their association with apical periodontitis (AP) detected by cone-beam computed tomography (CBCT) images from an adult Turkish subpopulation. Material and Methods The sample for this study consisted of 242 patients (aging f
J. Appl. Oral Sci.. Publicado em: 2014-12
-
19. Fracture resistance of endodontically treated teeth restored with different intraradicular posts with different lengths
AIM: This study compared the resistance to fracture of endodontically treated teeth restored with different intraradicular posts with different lengths and full coverage metallic crowns. METHODS: Sixty extracted human canine teeth were randomly divided into 6 groups. Groups CP5, CP75 and CP10 were restored using custom cast post and core (CP) and groups PF5,
Braz. J. Oral Sci.. Publicado em: 2013-03
-
20. Viabilidade da substituição de raízes de dentes humanos por raízes construídas em compósito para estudos de mecânica da fratura / Viability of replacing the roots of human teeth by roots made of composite for the study of fracture mechanics
OBJETIVO: A restauração de dentes tratados endodonticamente é um desafio para a Odontologia. A fratura do remanescente radicular é comum neste tratamento. São três os métodos utilizados para estudar as fraturas: a análise por elementos finitos, os que utilizam dentes naturais e aqueles que utilizam dentes artificiais. O uso de dentes naturais apresen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/04/2012
-
21. RESISTÊNCIA À FRATURA DE PILARES DE PRÓTESES FIXAS RESTAURADOS COM NÚCLEO DIRETO E INDIRETO EM MANDÍBULAS DE SUÍNOS / FRACTURE STRENGTH OF FIXED PARTIAL DENTURES ABUTMENTS RESTORED WITH DIRECT AND INDIRECT CORE IN SWINE JAW
O objetivo deste estudo foi comparar a resistência à fratura de pilares de próteses parciais fixas (PPFS) restaurados com núcleo em dentina, com pino de fibra de vidro e resina composta e com núcleo metálico fundido; analisar o tipo de fratura (reparável ou irreparável) e verificar a sua relação com o tipo de núcleo utilizado. Foram utilizados 15
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2012
-
22. RESISTÊNCIA À FRATURA DE DENTES COM RAÍZES FRAGILIZADAS RESTAURADOS COM DIFERENTES RETENTORES INTRARRADICULARES / FRACTURE RESISTANCE OF WEAKENED ROOTS RESTORED BY DIFFERENT POST SYSTEMS
Diante da necessidade do desenvolvimento de técnicas capazes de restaurar adequadamente raízes com condutos alargados, este trabalho visou avaliar o efeito da ciclagem mecânica sobre a resistência à fratura de dentes com raízes fragilizadas e restaurados com diferentes retentores intrarradiculares, bem como analisar o padrão de falha destes dentes qua
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
-
23. Avaliação da customização por desgaste de pinos pré-fabricados de fibra de vidro / Evaluation of fibre posts submitted to customization of the apical portion
The purpose of this study was to evaluate fibre posts (White Post DC/FGM) submitted to customization of the apical portion. Experiment 1: 5 #4 posts were divided into five groups (G) and submitted to different custom adaptation treatments: GA no surface treatment, GB- industrial shaping tool (Dentsply), GC- #3195 fine diamond bur (KG Sorensen), GD- medium-gr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/01/2012
-
24. Avaliação dos traumatismos dentários atendidos no Serviço de Trauma Dental da Faculdade de Odontologia de Piracicaba : estudo retrospectivo de 10 anos / Evaluation of tooth injuries treated by Dental Trauma Service at Piracicaba Dentistry School : a 10 years retrospective study
The purpose of this retrospective study was to evaluate several aspects related to traumatic dental injuries regarding its etiology, prevalence and classification in the patients of Service of Dental Trauma of the Endodontics Area, Faculty of Dentistry of Piracicaba-UNICAMP, from July 2000 to July 2010. The statistical treatment analysed data from frequency
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/04/2011