深覆患者弹性颌平面导板矫治后下前牙牙根吸收情况观察  

Root resorption of anterior teeth by using elastic flat bite plate during orthodontic treatment of deep overbite

作　　者：常永春[1] 郭杰[1] 

机构地区：[1]山东大学口腔医院,济南250012

出　　处：《山东医药》2015年第27期66-67,共2页Shandong Medical Journal

摘　　要：目的观察深覆患者弹性颌平面导板矫治后下前牙牙根吸收情况。方法深覆患者61例,随机分为观察组33例(青少年、成年患者各21、12例)、对照组28例(青少年、成年患者各17、11例)。两组均进行深覆矫治,其中观察组戴用弹性平面导板,对照组戴用硬性平面导板。分别于治疗前后拍摄根尖X线片,测算下前牙牙根吸收量。结果两组均取得满意疗效,打开咬合效果明显。观察组下前牙牙根吸收量为(0.79±0.29)mm,其中青少年亚组为(0.69±0.29)mm,成年亚组为(0.96±0.19)mm;对照组分别为(1.03±0.25)、(0.91±0.23)、(1.21±1.18)mm;两组相比,P均<0.05。结论深覆患者戴用弹性颌平面导板矫治后下前牙牙根吸收量较小,低于硬性颌平面导板。Objective To observe the root resorption of the anterior teeth by using elastic flat bite plate during ortho-dontic treatment of deep overbite.Methods Sixty-one cases with deep overbite were selected and randomly divided into the observation group （21 cases for the young subgroup, 12 cases for the adult subgroup） and the control group （17 cases for the young subgroup, 11 cases for the adult subgroup） .Both groups underwent orthodontic treatment, and we used elas-tic flat bite plate in the observation and rigid flat bite plate in the control group, respectively.Periapical films were taken before and after the process of stimulating root resorption, and the root resorption of anterior teeth was measured.Results The patients in the two groups obtained satisfactory results and the effect of bite-opening was obvious.Root resorption a-mount in the observation group was （0.79 ±0.29） mm, during which the root resorption amount for the young subgroup was （0.69 ±0.29） mm and adult subgroup was （0.96 ±0.19） mm, and they were respectively（1.03 ±0.25）, （0.91 ± 0.23） and （1.21 ±1.18） mm in the control group.Significant differences were found between the two groups （ all P＆lt;0.05）.Conclusion The root resorption of the anterior teeth caused by elastic flat bite plate during orthodontic treatment of deep overbite is lighter than the traditional rigid plane bite plate.

关 键 词：深覆 口腔正畸治疗 颌平面导板 弹性颌平面导板 牙根吸收 

分 类 号：R783.5[医药卫生—口腔医学]