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目的探讨基牙折断后保留或拔除残根对可摘局部义齿添加人工牙效果的影响。方法对2011年6月至2013年3月郑州人民医院口腔科门诊收治的89例佩戴整体铸造支架式可摘局部义齿3~5年后基牙折断或脱落患者,行在旧义齿上添加人工牙的修复方式。89例患者随机分为两组:保留牙根组49例,保留牙根直接添加人工牙;无牙根组40例,拔除牙根后再添加人工牙。观察添加人工牙1年后的义齿固位力及稳定性、咀嚼功能、佩戴义齿舒适度、人工牙粘接等情况。结果两组患者的义齿固位力及稳定性比较差异无统计学意义(均P>0.05),佩戴义齿舒适度及人工牙粘接情况无牙根组优于保留牙根组(均P<0.05),保留牙根组牙龈炎发生率为24.5%、根面龋发生率为8%。结论基牙折断添加人工牙前拔除条件欠佳的残根,可以获得更好的义齿延期使用效果。
Objective To investigate the effect of retaining or removing the residual root after fracture of the abutment on the artificial denture with removable partial dentures. Methods From June 2011 to March 2013, 89 patients who underwent orthopedic dentistry in Zhengzhou People’s Hospital were enrolled in this study. The patients with broken or missing abutments after 3 to 5 years wearing integral cast removable partial dentures were treated with artificial teeth Repair method. Eighty-nine patients were randomly divided into two groups: 49 cases were reserved root group, artificial tooth was reserved directly; 40 cases without root group, artificial tooth was removed after root removal. Observe denture retention and stability after 1 year of artificial tooth addition, masticatory function, wearing denture comfort, artificial tooth adhesion and so on. Results There was no significant difference in denture retention and stability between the two groups (all P> 0.05). There was no significant difference between the denture group and the preserved root group (P <0.05) The incidence of gingivitis in root group was 24.5%, and the incidence of root caries was 8%. Conclusion It is concluded that the addition of the abutment fracture to the residual root with poor extraction conditions of the artificial tooth can achieve better delaying effect of the denture.