Methods: Select 20 heathy adult Japanese rabbits,divided into two groups by random;immediate implcmtated group and delayed implcmtated after decalcification,each had 10 animals.

• 方法:选择健康成年日本大白兔20只,随机分为立即植入组(10只)和微脱钙后延迟植入组(10只),将兔自体牙移植鼻部,半年后处死动物组织学观察。