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Fracture resistance of endodontically restored, weakened incisors.
Cauwels, Rita G E C; Lassila, Lippo V J; Martens, Luc C; Vallittu, Pekka K; Verbeeck, Ronald M H.
Afiliação
  • Cauwels RGEC; Department of Paediatric Dentistry and Special Care - Paecomedis Research Group Research, Ghent University, Ghent, Belgium.
  • Lassila LVJ; Department of Biomaterials Science and Turku Clinical Biomaterials Centre - TCBC, Institute of Dentistry, University of Turku, Turku, Finland.
  • Martens LC; Department of Paediatric Dentistry and Special Care - Paecomedis Research Group Research, Ghent University, Ghent, Belgium.
  • Vallittu PK; Department of Biomaterials Science and Turku Clinical Biomaterials Centre - TCBC, Institute of Dentistry, University of Turku, Turku, Finland.
  • Verbeeck RMH; Department of Basic Medical Science-Biomaterials Group, Ghent University, Ghent, Belgium.
Dent Traumatol ; 30(5): 348-355, 2014 Oct.
Article em En | MEDLINE | ID: mdl-24571403
OBJECTIVES: To test the fracture strength of weakened bovine incisors endodontically treated with mineral trioxide aggregate (MTA), calcium phosphate bone cement (CPBC) or fibre reinforced composite (FRC) posts, and to evaluate the fracture mode. METHODS: Weakened bovine incisors (n = 75), standardized according to the dentinal wall thickness at the cervical area, were randomly assigned to one control group and three experimental groups. Unfilled teeth were assigned to group 1 (n = 20) and served as control group. Group 2 (n = 17) consisted of teeth filled with MTA. In group 3 (n = 18), the incisors were filled with CPBC and in group 4 (n = 20) with FRC posts. All specimens were subjected to load at a cross-head speed of 60 mm min(-1) until fracture occurred. The initial (IL) and final fracture (FL) loads (N) were recorded, and the failure mode among the different groups was evaluated. RESULTS: anova showed a statistically significant difference in fracture load among the groups. Tukey's test revealed a significant difference for the IL between the control group and the experimental groups with exception of the MTA group. The FL was not significantly different among the experimental groups. A high percentage of favourable fractures was seen in the FRC and CPBC groups. CONCLUSION: FRC posts and CPBC could be promising materials to strengthen non-vital structurally compromised teeth.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tratamento do Canal Radicular / Fraturas dos Dentes Limite: Adolescent / Child / Female / Humans / Male País/Região como assunto: America do sul / Brasil Idioma: En Revista: Dent Traumatol Assunto da revista: ODONTOLOGIA / TRAUMATOLOGIA Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Bélgica País de publicação: Dinamarca
Texto completo
Adicionar na Minha BVS
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XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tratamento do Canal Radicular / Fraturas dos Dentes Limite: Adolescent / Child / Female / Humans / Male País/Região como assunto: America do sul / Brasil Idioma: En Revista: Dent Traumatol Assunto da revista: ODONTOLOGIA / TRAUMATOLOGIA Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Bélgica País de publicação: Dinamarca