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- Title
Fracture resistance of weakened roots restored with relined or milled CAD-CAM glass fiber posts.
- Authors
MAIA, Belizane das Graças Oliveira; SANTOS, Thais da Silva Alves; CARVALHO, Cláudio Antonio Talge; VERNER, Francielle Silvestre; JUNQUEIRA, Rafael Binato
- Abstract
This in vitro study compared the fracture resistance of weakened roots restored with milled or relined glass fiber post (GFP). Seventy bovine incisors were divided into seven groups, according to the weakening protocol (none: control; medium-weakened: MW; highlyweakened: HW) and post anatomization technique (non-relined, relined with Bulk Fill or Z350 resin; milled GFP: M). Roots were thermomechanical cycled and submitted to compression. Frequencies and groups were compared by the chi-square test and twofactor ANOVA, Tukey's, and t-test (a=5%). The HW-M obtained the lowest values, showing significant differences compared to all groups (p<0.001). The highest value was HW-Bulk fill, with significant difference compared to MW-M (p=0.037) and HW-M (p<0.001). The frequency of repairable fractures was 100% in the control, 87%, and 63% in the MW and HW, respectively. Relined or milled GFPs can be considered to rehabilitate weakened teeth since failure patterns were predominantly repairable in all groups.
- Subjects
GLASS fibers; CHI-squared test; INCISORS; IN vitro studies; DENTAL pulp cavities
- Publication
Dental Materials Journal, 2023, Vol 42, Issue 1, p92
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2022-114