A clinical study on the effects of three different endo-overlay materials after root canal treatment for molars
Objective To compare the clinical effects of three different endo-overlay materials in repairing molar tooth defects.Methods Totally 88 patients(90 teeth)with dental defects after root canal treatment for molars at Oral Clinic of Taizhou Polytechnic College from September 2018 to August 2020 were selected and randomly divided into ceramic group(repaired with IPS e.max CAD glass ceramic inlay,30 cases),polymer ceramic group(with Ceramage polymer ce-ramic inlay,28 cases),and titanium alloy group(with titanium alloy inlay,30 cases),and there were 30 defective teeth in each group.According to the modified United States Public Health Service(USPHS)standards,the following items were evaluated in the three groups at 36 months after repair:the marginal sealability,surface conditions of the prothesis,secondary caries,wearing of opposite teeth,color consistency,and adjacent relationship.The differences in the propor-tion of each evaluation item graded as excellent and the patients'satisfaction among the three groups were compared.Re-sults At 36 months after restoration,the proportion of each evaluation item graded as excellent in all three groups was ≥ 80％;there was a statistically significant difference in the proportion of inlays graded as excellent in terms of sur-face condition of the prothesis and wearing of opposite teeth among the three groups(all P＜0.05);further pairwise com-parison revealed that the proportion of inlays with excellent grading on surface condition in titanium alloy group was sig-nificantly higher than that in ceramic group and polymer ceramic group,while the proportion of inlays with excel-lent grading on the wearing of opposite teeth was significantly lower than that in ceramic group and polymer ceramic group,and the differences were statistically significant(both P＜0.05).It was also found that 24 patients in ceramic group were satisfied,while 6 were not satisfied;23 cases in polymer ceramic group were satisfied,while 5 cases were not;24 patients in titanium alloy group were satisfied,while 6 were not.The distribution of satisfaction among the three groups of patients was compared,and the difference was not statistically significant(x2=0.056,P=0.972).Conclusion The three types of inlay materials in this study have all achieved ideal results in repairing molar tooth defects.Moreover,titanium alloy inlays have better repairing effects on the surface conditions than Ceramage polymer ceramic inlays and IPS e.max CAD glass ceramic inlays,making them more suitable for patients with tight occlusion and high occlusal force.However,they are not as good as the other two types of inlays when it comes to the wearing of opposite teeth.
万方数据
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