Objective to investigate the difference between digital periapical film and conventional film in the evaluation of tooth length and root resorption.
目的探讨数字化根尖片和普通根尖片在评价牙齿长度和牙根吸收方面的差异。
2
Root resorption of deciduous tooth without permanent tooth germ was significantly delayed than the deciduous tooth with permanent tooth germ.
恒牙胚缺失的乳牙牙根吸收明显晚于恒牙胚存在的乳牙。
3
Objective:To investigate the effect of implantation of particulate hydroxylapatite artificial bone after tooth extraction on resorption of the alveolar ridge.