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乳牙龋病和牙齿发育异常等疾病严重危害乳牙列健康，妨碍营养吸收，影响生长发育。乳牙龋损进展快，可在短时间内发展为猖獗性龋等牙体硬组织疾病。金属预成冠是一种适用于儿童严重牙体组织损害修复治疗、由不锈钢预制的牙冠。金属预成冠的修复技术有一定的操作程序，需要专门的器械和材料，由合格的口腔执业医师完成。中华口腔医学会儿童口腔医学专业委员会组织专家，制定乳牙金属预成冠修复临床操作规范，规范乳牙金属预成冠在儿童龋病等乳磨牙修复治疗中的应用，以利其进一步推广应用。“,”Deciduous caries and abnormal tooth development are common children′s oral diseases which seriously harm the health of deciduous dentition, hinder the absorption of nutrients and affect the general growth and development. Caries of deciduous teeth progresses rapidly and can develop into rampant caries and other hard tissue diseases in a short time. The metal prefabricated crown is a stainless steel restoration for the treatment and repair of severe dental tissue damage in children. Its repair technique has certain operating procedures, requires specific equipments and materials, needs qualified dental clinicians to complete. The Society of Pediatric Dentistry, Chinese Stomatological Association organized experts to formulate the guideline of the clinical operation stainless steel crown restoration, so as to standardize the application of stainless steel crowns in the molar repair treatment of deciduous teeth such as caries in children and to further promote the application of the technique.