摘要
目的观察牙周炎伸长的前、后牙经种植体支抗压低后根吸收的情况,并与无伸长牙的正畸患者进行比较。方法选择成人牙周炎前牙扇形散开伸长的患者和因对合磨牙缺失造成上颌第一磨牙伸长的成人正畸患者各20例,运用种植体支抗压低伸长牙。通过治疗前后的CBCT片分别对伸长前牙、后牙和相关对照组进行分级定量和定量分析,比较治疗前后的差异。对伸长后牙和对照组组内不同牙根的根吸收量进行方差分析。结果矫治后均有轻度牙根吸收(P<0.05),伸长组牙根吸收程度较对照组大,但二组间差别无统计学意义。第一磨牙不同牙根间的牙根吸收也有差别,但之间的差别无统计学意义。结论正畸治疗会导致一定量的牙根吸收,是少量且可接受的,同时压低伸长牙并不会导致更严重的牙根吸收。通过种植体支抗压低伸长牙是有效,安全的。
Objective To observe root resorption of overerupted anterior and posterior teeth in paradentitis patients after implant microscrew, and compare it with that in orthodontic patients without overerupted teeth. Methods Select 20 patients with adult pcriodontitis whose anterior teeth fan out and overerupted, and 20 adult orthodontic patients with overerupted maxillary first molars due to the lack of involution molars, and depress their overerupted teeth by implant anchorage. Then identify the difference before and after treatment through grading, quantifying and analyzing root resorption of the overerupted exterior and posterior teeth as well as those in the relevant contrast group with the aid of CBCTs before and after treatment. Apply ANOVA on resorption of different roots in overerupted posterior teeth and those in contrast group. Results All roots conduct mild resorption after correction. Roots of overerupted teeth absorb more in comparison with those in the contrast group, yet there is no statistical significance. Resorption also varies among different roots of first molar, but no statistical significance is found. Conclusion Orthodontic treatment will cause a certain amount of root resorption within acceptable range. Meanwhile, depressing the overerupted teeth will not result in more severe root resorption. It is effective and safe to depress overerupted teeth with implant anchorage.
出处
《现代口腔医学杂志》
CAS
CSCD
2013年第3期137-141,共5页
Journal of Modern Stomatology
关键词
种植体支抗
伸长牙
牙根吸收
Implant anchorage
Overerupted teeth
Root resorption
