自锁托槽与传统金属托槽行后牙段扩弓对牙弓、牙槽骨、基骨影响的CBCT对比研究
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摘要
目的:探讨自锁托槽与传统金属托槽后牙段扩弓的应用效果。方法:选取2015年6月至2017年3月苏州大学附属张家港医院收治的82例正畸治疗患者为研究对象,随机分为研究组(52例)和对照组(30例)。对照组采用传统金属托槽治疗,研究组采用自锁托槽治疗。比较两组治疗前、后锥形束CT(CBCT)测量的牙弓、牙槽骨、基骨等指标,并评估患者治疗前、后的牙周健康情况。结果:扩弓后,两组第一磨牙牙弓宽度,第一、第二前磨牙牙弓宽度、尖牙宽度以及基骨宽度均显著增大,第一磨牙腭侧牙槽骨厚度明显增厚,第一磨牙颊侧牙槽骨厚度显著变薄,且第一磨牙倾斜度明显增大,牙周健康指数明显上升,与扩弓前比较差异均有统计学意义(均P<0.05);观察组第一、第二前磨牙宽度增大幅度小于对照组(P<0.05),两组牙弓、基骨宽度、牙槽骨改变及牙周健康指数等指标比较,差异均无统计学意义(均P>0.05)。结论:传统托槽与自锁托槽对牙弓、牙槽骨及基骨等牙弓形态及牙周健康的影响基本相当,正畸效果无明显差异。
Objective:To explore the effect of self-locking brackets and MBT straight wire application in posterior teeth patching.Methods:From June 2015 to March 2017,a total of 82 patients who received orthodontic treatment in our hospital were selected,and randomly assigned to use either MBT straight wire(control group,n=30)or self-ligating system(observation group,n=52)during posterior teeth patching.The width of dental arch and dental base bone and alveolar bone thickness were detected by CBCT before and after treatment.The periodontal health of patients was evaluated.Results:After arch expansion,the arch width of the first molar,the arch width of the first and second premolar teeth,canine width,the width of dental base bone,the periodontal health index,first molar inclination and first molar buccal alveolar bone thickness were significantly increased,while the first molar palatal lateral alveolar bone thickness was decreased in both groups(P<0.05).The increases in the first and second premolar width were more significant in the observation group(P<0.05).There was no significant difference in dental arch,basement width,alveolar bone changes and periodontal health index between the two groups(P>0.05).Conclusion:MBT straight wire and self-locking brackets had similar effects on the shape of dental arch,dental base bone and alveolar bone and periodontal health,and similar orthodontic effect.
Objective:To explore the effect of self-locking brackets and MBT straight wire application in posterior teeth patching.Methods:From June 2015 to March 2017,a total of 82 patients who received orthodontic treatment in our hospital were selected,and randomly assigned to use either MBT straight wire(control group,n=30)or self-ligating system(observation group,n=52)during posterior teeth patching.The width of dental arch and dental base bone and alveolar bone thickness were detected by CBCT before and after treatment.The periodontal health of patients was evaluated.Results:After arch expansion,the arch width of the first molar,the arch width of the first and second premolar teeth,canine width,the width of dental base bone,the periodontal health index,first molar inclination and first molar buccal alveolar bone thickness were significantly increased,while the first molar palatal lateral alveolar bone thickness was decreased in both groups(P<0.05).The increases in the first and second premolar width were more significant in the observation group(P<0.05).There was no significant difference in dental arch,basement width,alveolar bone changes and periodontal health index between the two groups(P>0.05).Conclusion:MBT straight wire and self-locking brackets had similar effects on the shape of dental arch,dental base bone and alveolar bone and periodontal health,and similar orthodontic effect.
引文
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[13]王小旻,陈付蓉,李琥.传统与改良Hyrax扩弓器对牙弓、牙槽骨、基骨影响的CBCT对比研究[J].口腔医学,2016,36(7):615-620.
[14]EL H,PALOMO J M.Three-dimensional evaluation of upper airway following rapid maxillary expansion:a CBCT study[J].Angle Orthod,2014,84(2):265-273.
[15]WILMES B,LUDWIG B,KATYAL V,et al.The hybrid hyrax distalizer,a new all-in-one appliance for rapid palatal expansion,early class III treatment and upper molar distalization[J].J Orthod,2014,41(s1):S47-S53.
[2]MOTAMEDI MRK,HEIDARPOUR M,SIADAT S,et al.Orthodontic extraction of high-risk impacted mandibular third molars in close proximity to the mandibular canal:a systematic review[J].J Oral Maxillofac Surg,2015,73(9):1672-1685.
[3]陈敏,阮土耿,李相红.自锁托槽与传统金属托槽对牙周临床指标的影响比较[J].中华全科医学,2016,14(6):1043-1045.
[4]PULGAONKAR R,CHITRA P.Altered passive eruption complicating optimal orthodontic bracket placement:a case report and review of literature[J].J ClinDiagn Res,2015,9(11):1-3.
[5]PAPAGEORGIOU S N,KEILIG L,HASAN I,et al.Effect of materialvariation onthe biomechanical behaviour of orthodontic fixed appliances:a finite element analysis[J].Eur J Orthod,2015,14(3):50-54.
[6]CHANE-FANE C,DARQUE F.Rapid maxillary expansion assisted by palatal mini-implants in adolescents-Preliminary study[J].Int Orthod,2015,13(1):96-111.
[7]TOMINAGA J Y,OZAKI H,CHIANG P C,et al.Effect of bracket slot and archwire dimensions on anterior tooth movementduring space closure in sliding mechanics:a 3-dimensional finite element study[J].Am JOrthod Dentofacial Orthop,2014,146(2):166-174.
[8]ASHKENAZI M,SALEM N F,GARON S,et al.E-valuation of Orthodontic and Triple-headed toothbrushes when used alone or in conjunction with single-tufted tooth brush in patients with fixed lingual orthodontic appliances:a randomized clinical trial[J].N Y State Dent J,2015,81(3):31-37.
[9]UZUNER F D,KAYGISIZ E,CANKAYA Z T.Effect of the bracket types on microbialcolonization and periodontal status[J].Angle Orthod,2014,84(6):1062-1067.
[10]MOOLYA N N,SHETTY A,GUPTA N,et al.Orthodontic bracket designs and their impact on microbial profile and periodontal disease:a clinical trial[J].JOrthod Sci,2014,3(4):125-131.
[11]SARDARIAN A,DANAEI S M,SHAHIDI S,et al.The effect ofvertical bracket positioning on torque and the resultant stress in theperiodontal ligament-a finite element study[J].Prog Orthod,2014,15(1):50-52.
[12]GARIB D G,MENEZES M H,SILVA FILHO O G,et al.Immediate periodontal bone plate changes induced by rapid maxillary expansion in the early mixed dentition:CT findings[J].Dental Press J Orthod,2014,19(3):36-43.
[13]王小旻,陈付蓉,李琥.传统与改良Hyrax扩弓器对牙弓、牙槽骨、基骨影响的CBCT对比研究[J].口腔医学,2016,36(7):615-620.
[14]EL H,PALOMO J M.Three-dimensional evaluation of upper airway following rapid maxillary expansion:a CBCT study[J].Angle Orthod,2014,84(2):265-273.
[15]WILMES B,LUDWIG B,KATYAL V,et al.The hybrid hyrax distalizer,a new all-in-one appliance for rapid palatal expansion,early class III treatment and upper molar distalization[J].J Orthod,2014,41(s1):S47-S53.