Comparison of two position implant-supported molar distalization systems
10.3969/j.issn.1001-3733.2014.06.026
- VernacularTitle:比较2种部位种植钉支抗推上颌磨牙向远中移动的效果
- Author:
Shuxia CUI
;
Ruiqi DING
;
Shumin WANG
;
Wei YUAN
- Publication Type:Journal Article
- Keywords:
Micro-implant;
Molar distalization;
Infrazygomatic crest
- From:
Journal of Practical Stomatology
2014;(6):849-852
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare 2 position implant-supported molar distalization systems in clinical application.Methods:25 pa-tients with Class II and mild to moderate crowding dentition were included,18 females and 7 males,aged 15 to 29 years old(22.58 on average ).All the patients were treated with non-extraction method by distalizing the upper molar with micro-implant anchorage.In ex-perimental group(n =12)the micro-implants were inserted on infrazygomatic crest above the maxillary first molar mesial buccal root. In control group(n =13)the micro-implants were inserted on buccal alveolar bone between maxillary second premolar and maxillary first molar.In both groups micro-implants were inserted to distalize the maxillary molars.The displacement patterns of maxillary inci-sors and molars were measured and compared.Results:Successful primary micro-implant placement was obtained in 87.5%(21 /24) of the implantation in control group and 100%(26 /26)in experimental group.The distal movement(mm)of the molars in control and experiment group was 2.29 ±0.96 and 2.91 ±0.96 respectively(P >0.05).Experimental group showed significant intrusive displace-ment of the molars.Horizontal incisor displacement in experimental group was more than that in control group.Conclusion:Micro-im-plant inserted in infrazygomatic crest may facilitate intrusion and distalization of the maxillary molar and incisor.
