Physical properties of root cementum: Part 26. Effects of micro-osteoperforations on orthodontic root resorption: A microcomputed tomography study

被引:49
作者
Chan, Emmanuel [1 ]
Dalci, Oyku [1 ]
Petocz, Peter [2 ]
Papadopoulou, Alexandra K. [1 ]
Darendeliler, M. Ali [1 ]
机构
[1] Univ Sydney, Sydney Dent Hosp, Fac Dent, Discipline Orthodont,Sydney Local Hlth Dist, Surry Hills, NSW, Australia
[2] Macquarie Univ, Dept Stat, Sydney, NSW, Australia
关键词
TOOTH-MOVEMENT; CORTICOTOMY; EXPRESSION; PREMOLARS; ODONTOCLASTS; RETRACTION; INCISORS; BIOLOGY; CANINES; REPAIR;
D O I
10.1016/j.ajodo.2017.05.036
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Introduction: Studies have demonstrated the potential efficacy of micro-osteoperforations in accelerating tooth movement by amplifying the expression of inflammatory markers. The aim of this investigation was to examine the effects of micro-osteoperforations on orthodontic root resorption with microcomputed tomography. Methods: This prospective controlled clinical trial involved 20 subjects requiring extraction of the maxillary first premolars as part of their orthodontic treatment. A buccal tipping force of 150 g was applied to both premolars. Using the Propel appliance (Propel Orthodontics, San Jose, Calif), micro-osteoperforations were applied at a depth of 5 mm on the mesial and distal aspects in the midroot region of the experimental side of the first premolar root; the contralateral side served as the control. After 28 days, both premolars were extracted. The teeth were scanned under microcomputed tomography, and the volumes of root resorption craters were calculated and compared. Results: Premolars treated with micro-osteoperforation exhibited significantly greater average total amounts of root resorption than did the control teeth (0.576 vs 0.406 mm(3)). The total average volumetric root loss of premolars treated with micro-osteoperforation was 42% greater than that of the control teeth. Conclusions: This 28-day trial showed that micro-osteoperforations resulted in greater orthodontic root resorption. However, these results should be verified in patients who are undergoing full-length orthodontic treatment.
引用
收藏
页码:204 / 213
页数:10
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