Study on three kinds of fiber piles for repairing anterior teeth / 实用医学杂志

ABSTRACT

Objective To investigate the differences of tooth bending force of three kinds of fiber post in front teeth repair. Methods The number of incisor teeth in the upper jaw was 36. Immediately after dealing with the root canal filling and removing crown in the four groupsgroup A CAD/CAM integration of glass fiber post , group B plastic fiber pile + resin cores ,advance into the fiber pile group C + resin cores ,group D as control metal crown repair directly after root canal treatment. And the first three samples were selected by using casting metal crown. After recording and repairing the test data ,and analyzing its failure form ,the test results were analyzed by the single factor analysis. Results In the antifold test,the anti-folding force of(247.4±24.43)N, (203.5 ± 24.46)N ,(197.4 ± 25.09)N and (260.4 ± 33.43)N was observed in group A to D ,respectively. After statistical analysis,group A was better than group B and group C(P < 0.05),but with no significant difference between group A and D ,and between group B and C. It was observed that the fracture mode of each group was damaged in the neck of the tooth. Conclusion The anti-folding force of the integrated glass fiber core is better than that of the preformed glass fiber pile and the plastic fiber pile ,which is similar to the anti-folding perfor-mance of the natural tooth structure.