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Effect of Reciprocating Systems and Working Lengths on Apical Microcrack Development: a micro-CT Study.
Oliveira, Bruna Paloma de; Câmara, Andréa Cruz; Duarte, Daniel Amancio; Heck, Richard John; Antonino, Antonio Celso Dantas; Aguiar, Carlos Menezes.
Afiliação
  • Oliveira BP; Department of Prosthodontics and Oral and Maxillofacial Surgery, Dental School, UFPE - Universidade Federal de Pernambuco, Recife, PE, Brazil.
  • Câmara AC; Department of Prosthodontics and Oral and Maxillofacial Surgery, Dental School, UFPE - Universidade Federal de Pernambuco, Recife, PE, Brazil.
  • Duarte DA; Department of Nuclear Energy, UFPE - Universidade Federal de Pernambuco, Recife, PE, Brazil.
  • Heck RJ; Department of Land Resource Science, University of Guelph, Guelph, Canada.
  • Antonino ACD; Department of Nuclear Energy, UFPE - Universidade Federal de Pernambuco, Recife, PE, Brazil.
  • Aguiar CM; Department of Prosthodontics and Oral and Maxillofacial Surgery, Dental School, UFPE - Universidade Federal de Pernambuco, Recife, PE, Brazil.
Braz Dent J ; 28(6): 710-714, 2017.
Article em En | MEDLINE | ID: mdl-29211126
The objective of this study was to evaluate the effect of root canal preparation with single-file reciprocating systems at different working lengths on the development of apical microcracks using micro-computed tomographic (micro-CT) imaging. Forty extracted human mandibular incisors were randomly assigned to 4 groups (n=10) according to the systems and working length used to prepare the root canals: Group A - WaveOne Gold at apical foramen (AF), Group B - WaveOne Gold 1 mm short of the AF (AF-1 mm), Group C - Unicone (AF) and Group D - Unicone (AF-1 mm). Micro-CT scanning was performed before and after root canal preparation at an isotropic resolution of 14 µm. Then, three examiners assessed the cross-sectional images generated to detect microcracks in the apical portion of the roots. Apical microcracks were visualized in 3, 1, 1, and 3 specimens in groups A, B, C, and D, respectively. All these microcracks observed after root canal preparation already existed prior to instrumentation, and no new apical microcrack was detected. For all groups, the number of slices presenting microcracks after root canal preparation was the same as before canal preparation. Root canal preparation with WaveOne Gold and Unicone, regardless of the working length, was not associated with apical microcrack formation.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fraturas dos Dentes / Ápice Dentário / Microtomografia por Raio-X Limite: Humans Idioma: En Revista: Braz Dent J Assunto da revista: ODONTOLOGIA Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fraturas dos Dentes / Ápice Dentário / Microtomografia por Raio-X Limite: Humans Idioma: En Revista: Braz Dent J Assunto da revista: ODONTOLOGIA Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil