PAOO辅助关闭下颌第一磨牙间隙的临床研究  

Clinical Study on Mandibular First Molar Space Closing Assisted by Periodontally Accelerated Osteogenic Orthodontics

作　　者：陈雪婷 CHEN Xueting(Second Department of Orthodontics,Stomatological Hospital of Xiamen Medical College,Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment,Xiamen 361008,Fujian,China)

机构地区：[1]厦门医学院附属口腔医院正畸二科厦门市口腔疾病诊疗重点实验室,福建厦门361008

出　　处：《中国美容医学》2022年第12期98-103,共6页Chinese Journal of Aesthetic Medicine

基　　金：2020年厦门市医疗卫生指导性项目(名称:微创骨皮质切开术辅助正畸关闭第一磨牙间隙的临床研究,编号:3502Z20209240)。

摘　　要：目的:研究牙周加速成骨正畸(Periodontally accelerated osteogenic orthodontics,PAOO)对关闭下颌第一磨牙间隙的时间及下颌第二磨牙牙根吸收量的影响。方法:选取42例下颌第一磨牙缺失或因龋无法保留的成年患者,随机分为PAOO辅助治疗组(A组,21例)及常规正畸治疗组(B组,21例)。矫治前后拍摄锥形束CT(Cone beam computer tomography,CBCT),测量两组患者排齐时间、关闭间隙时间及下颌第二磨牙近远中根吸收量,比较两组之间差异。结果:A、B组排齐时间相比差异无统计学意义(P>0.05)。A组关闭间隙时间为(9.87±0.92)个月,B组为(16.79±1.67)个月,两组差异有统计学意义(P<0.01)。A组排齐与关闭间隙总时间为(16.31±1.18)个月,B组为(23.41±1.99)个月,两组差异有统计学意义(P<0.01);A组与B组矫治后近远中根均有一定程度吸收,A组近中根吸收量为(0.61±0.34)mm,B组为(1.46±0.57)mm;A组远中根吸收量为(0.56±0.29)mm,B组为(1.62±0.45)mm,两组近远中根吸收量对比差异均有统计学意义(P<0.01)。结论:PAOO可以加速下颌第二磨牙的近中移动,缩短正畸治疗时间,并减少其牙根吸收。Objective To investigate the effect on the time of closing space of mandibular first molar and the root resorption of mandibular second molar by Periodontally accelerated osteogenic orthodontics(PAOO).Methods 42 adult patients with mandibular first molar missing or unable to retain due to caries were randomly divided into PAOO assisted treatment group(group A,21 cases)and conventional orthodontic treatment group(group B,21 cases).CBCT was taken before and after orthodontic treatment.The alignment time,closing space time and mesial and distal root resorption of mandibular second molar were measured.The differences between these two groups were compared.Results There was no significant difference between group A and group B in alignment stage(P>0.05).Time needed for space closure of group A was(9.87±0.92)months,group B was(16.79±1.67)months,the difference between these two groups was statistically significant(P<0.01).Time needed for aligning and spacec closure of group A was(16.31±1.18)months,group B was(23.41±1.99)months,the difference between these two groups was statistically significant(P<0.01);The mesial and distal roots of group A and group B were absorbed after treatment.In group A,the absorption of mesial root was(0.61±0.34)mm,group B was(1.46±0.57)mm;The absorption of distal root in group A was(0.56±0.29)mm,group B was(1.62±0.45)mm,the difference between these two groups was statistically significant(P<0.01).Conclusion PAOO can effectively accelerate the mesial movement of mandibular second molar,shorten orthodontic treatment time and reduce root resorption.

关 键 词：牙周加速成骨正畸 正畸牙移动 下颌第一磨牙 牙根吸收 正畸加速 治疗时间 

分 类 号：R783.5[医药卫生—口腔医学]