ABSTRACT
Objective To analyze the application effect of glass fiber pile and cast metal pile in tooth defect repair and its influence on periodontal tissue.Methods From February 2014 to February 2015,112 patients with dental defect in the Central Hospital of Yiwu were randomly divided into the control group and the research group according to the digital table,with 56 cases in each group.The control group received the casting metal pile repair,the research group was repaired with glass fiber piles.The remediation effect,periodontal tissue status,inflammatory response and adverse reaction were compared between the two groups.Results The success rate of the research group was significantly higher than that of the control group(89.29％vs.66.07％),and there was statistically significant difference(χ2 =8.70,P<0.05).After treatment,the alkaline phosphatase,interleukin-6(IL-6)and interleukin-8(IL-8)levels of the two groups were increased compared with before treatment,which of the research group were obviously lower than those of the control group [(440.75 ±55.75)U/L vs.(491.75 ±62.59)U/L,(18.77 ± 2.21)ng/L vs.(30.65 ±3.97)ng/L,(51.42 ±6.32)μg/L vs.(76.33 ±9.50)μg/L],there were statistically significant differences(t=4.52,19.56,16.33,all P<0.05).After treatment,the periodontal examination depth of the two groups was(2.15 ±0.29)mm and(2.17 ±0.25)mm,respectively,and there was no statistically significant difference(t=0.39,P>0.05).Conclusion The effect of glass fiber pile in tooth defect repair is better than cast metal pile,and its stability and biocompatibility are better,and it is a simple operation,which is worthy of clinical promotion.
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 groups:group 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.