结论人滞留乳牙牙根吸收面存在大量的破骨细胞，是研究人破骨细胞的一个来源。
Conclusion on the resorbing surface of human deciduous teeth there are large amount of osteoclasts which can be used as a source of studying human osteoclast.
有些病例伴有牙列缺损，有些病例还有乳牙滞留、龋病、牙周病等。
Some had different degree defect of dentition, deciduous tooth retention, caries or periodontitis.
乳牙滞留； 即刻牙种植； 修复风险；
Retained deciduous teeth; Immediate dental implant; Risk of prosthetic;
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