目的:回顾性观察金属预成冠全冠式远中导板间隙保持器(distal shoe space maintainer,DSSM)在第二乳磨牙早失中的临床治疗效果.方法:收集2021年1月～2024年1月89例因第二乳磨牙早失行全冠式DSSM治疗病例,回顾性分析至少术后1年的临床资料和影像学资料,从DSSM保留率、保留状态、间隙丧失情况及DSSM维持时间4个方面分析临床治疗效果.结果:对57例完成随访到DSSM拆除病例进行数据分析,平均维持时间15(12.5,18.0)个月,其中16例出现脱落或提前拆除,第一乳磨牙的慢性炎症和脱焊在DSSM脱落失败的危险因素中有统计学意义(P＜0.05),第一乳磨牙的慢性炎症在影响DSSM变形移位的危险因素中有统计学意义(P＜0.05).对84例完成1年随访病例进行数据分析,22例移位变形病例平均间隙丧失2.31(2.14,2.34)mm,62例在位状态良好病例平均间隙丧失0.13(0.09,0.18)mm,两组数据比较差异有统计学意义(P＜0.05).结论:全冠式DSSM在在位保留上有优势,在位良好的病例也达到了良好的间隙保持临床效果,对于术前第一乳磨牙根尖周状态的判断及治疗和咬合管理还需予以改进.
Retrospective Study on Application of Metal Preformed Full Crown Distal Shoe Space Maintainer in Premature Loss of the Primary Second Molar
Objective:To analyze the clinical application effect of metal preformed full crown distal shoe space maintainer in premature loss of the primary second molar.Methods:From January 2021 to January 2024,89 children with premature loss of the primary second molar restored by metal preformed full crown distal shoe space maintainer in Hefei Stomatological Hospital West were collected.Clinical and imaging data were retrospectively analyzed at least 1 year after surgery.The effect of clinical treatment was analyzed from four aspects:retention rate,retention status,loss of space,and maintenance time.Results:The data of 57 patients who completed follow-up to distal shoe space maintainer(DSSM)were analyzed.Average maintenance time was 15(12.5,18.0)months and 16 cases appeared fall off or removed in advance.Chronic inflammation of the first primary molarand the DSSM desoldering were risk factors of the retention failure(P＜0.05).Chronic inflammation of the first primary molar was risk factors of the retention status(P＜0.05).Data of 84 patients with 1-year follow-up were analyzed.It was found that the average gap loss of 22 cases with DSSM position deformation was 2.31mm,however,62 cases with good position was 0.13mm.The difference between the two groups was statistically significant(P＜0.05).Conclusion:The metal preformed full crown distal shoe space maintainer treatment in premature loss of the primary second molar had a good retention rate.Good gap preserva-tion clinical results were also achieved in well-positioned cases.Preoperative diagnosis and treatment of chronic inflammation of the first primary molar and occlusal management should be improved.
metal preformed full crown distal shoe space maintainerpremature loss of the primary second molarthe first permanent molar noneruptionretrospective study
万方数据
维普
