摘要
目的通过比较已行根管治疗的牙齿和对侧同名活髓牙在正畸治疗后牙根吸收的程度,探讨正畸矫治对根管治疗牙齿牙根吸收程度的影响。方法选择42例初诊患者共计46颗已行根管治疗的牙齿作为试验组,对侧同名活髓牙作为对照组,测量两组矫治前后的牙根变化。结果正畸治疗后,两组牙齿牙根均有轻微吸收,试验组中切牙牙根吸收量为(0.74±0.13)mm,对照组中切牙牙根吸收量为(0.99±0.13)mm,差异具有统计学意义(t=-2.470,P=0.021);试验组双尖牙牙根吸收量为(0.57±0.12)mm,对照组双尖牙牙根吸收量为(0.80±0.13)mm,差异具有统计学意义(t=-2.200,P=0.040)。结论正畸治疗对已行根管治疗的牙齿牙根吸收影响程度小于对侧同名活髓牙。
Objective To evaluate the difference in the post-orthodontic root resorption between root-canal treated teeth and their counterpart teeth on the opposite side with vital pulp. Methods Forty-six root-canal treated teeth in 42 patients were included as the experimental grouptest group,in contrast toand their counterpart tooth on the opposite side were in the as control group. Both the pre-and post-orthodontic root lengths of the two group were was measured via distant paralleling technique periapical X-ray films. Then the root resorption values were calculated respectively and statistically analyzed. Results Post-After orthodonticallyorthodontic treatment,both groups exhibited slight root resorption. The average root resorption values of incisor in the experimental grouptest group were was（ 0. 74 ± 0. 13） mm,the average root resorption values of control group were was（ 0. 99 ± 0. 13） mm. The difference of the root resorption values between the two group are was statistically significant（ t =- 2. 470,P = 0. 021）. The average root resorption values of premolar in the experimental grouptest group were（ 0. 57 ± 0. 12） mm,and the average root resorption values of control group were was（ 0. 80 ± 0. 13） mm. The difference of the root resorption values between the two groups are was statistically significant（ t =- 2. 200,P = 0. 040）. Conclusion The extent of post-orthodontic root resorption of root-canal treated teeth were was less serious than that of their counterpart teeth with vital pulp on the opposite side.
出处
《广东牙病防治》
2014年第5期244-246,共3页
Journal of Dental Prevention and Treatment
