Retrospective Study on Application of Metal Preformed Full Crown Distal Shoe Space Maintainer in Premature Loss of the Primary Second Molar

doi:10.13701/j.cnki.kqyxyj.2024.12.009

Abstract

Abstract: 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 preservation 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.

Key words: metal preformed full crown distal shoe space maintainer, premature loss of the primary second molar, the first permanent molar noneruption, retrospective study

XIAO Fangli, XIE Ling, ZHANG Songying, DING Yue, REN Lewen, Tian Wenxian. Retrospective Study on Application of Metal Preformed Full Crown Distal Shoe Space Maintainer in Premature Loss of the Primary Second Molar[J]. Journal of Oral Science Research, 2024, 40(12): 1080-1085.

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