| Texto completo | |
| Autor(es): |
Ordinola-Zapata, R.
[1, 2]
;
Martins, J. N. R.
[3]
;
Bramante, C. M.
[1]
;
Villas-Boas, M. H.
[1]
;
Duarte, M. H.
[1]
;
Versiani, M. A.
[4]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Bauru Dent Sch, Dept Endodont, Bauru - Brazil
[2] Albert Einstein Med Ctr, Bender Div Endodont, 5501 Old York Rd, Philadelphia, PA 19141 - USA
[3] Univ Lisbon, Fac Med Dent, Dept Endodont, Lisbon - Portugal
[4] Univ Sao Paulo, Ribeirao Preto Dent Sch, Dept Restorat Dent, Ribeirao Preto - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | International Endodontic Journal; v. 50, n. 12, p. 1192-1200, DEC 2017. |
| Citações Web of Science: | 8 |
| Resumo | |
AimTo evaluate the internal and external morphologies of fused-rooted maxillary second molars by means of micro-computed tomography (micro-CT) analysis. MethodologyA total of 100 fused-rooted maxillary second molars from a Brazilian subpopulation were divided into six groups according to the root morphology. The samples were scanned at a resolution of 19.6m and evaluated with regard to the external morphology of the roots, the root canal configuration, the percentage frequency of C-shaped canals and isthmuses, as well as the morphology of the root canal system at 1, 2 and 3mm from the anatomical apex of the fused roots. ResultsThe most prevalent root canal fusions were type 1, mesiobuccal root fused with distobuccal root (32%), followed by type 3, DB root fused with P root (27%), and type 4, MB root fused with DB root, and P root fused with MB or DB roots (21%). The prevalence of C-shaped root canal systems were 22%. Depending on the type of root fusion, the percentage frequency of isthmuses in the apical level varied from 9.3% to 42.8%, whilst the presence of apical deltas ranged from 18.5% to 57.1% of teeth. ConclusionsThe root canal system of maxillary second molars with fused roots may have a high incidence of merging canals, isthmuses, apical deltas and C-shaped configurations. (AU) | |
| Processo FAPESP: | 13/03695-0 - Avaliação da anatomia, protocolos de instrumentação e de descontaminação de raízes por meio de microtomografia, prototipagem de alta resolução, microscopia óptica e confocal. |
| Beneficiário: | Ronald Ordinola Zapata |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |