|
KMID : 0988720090250010061
|
|
Journal of the Korean Academy of Stomatognathic Function and occlusion
2009 Volume.25 No. 1 p.61 ~ p.71
|
|
|
Miniscrew Installation Area and Condition on Maxillary Palatal Side
|
|
Lee Ki-Yeon
Lee Jin-Woo
|
|
|
Abstract
|
|
|
|
Anchorage control is important in orthodontic treatment. Recently miniscrew is widly used as maximum anchorage in orthodontic treatment, and then it is important to install miniscrew safely without damaging adjacent anatomic structure. In a view of Miniscrew’s stability, maxilla is unfavorable than mandible, and moreover maxillary soft buccal bone has disadvantage on stability. so palatal area comes into notice for installation area. We measured distance between palatal roots and bone thickness at midpalatal area using 3D computed tomography, and have found following results. 1. On the comparison of distance between palatal roots, the distance between 2nd premolar and 1st molar was significantly longest and the distance between premolars was significantly shortest. 2. Going toward lateral area from midpalatal suture and posterior area from zero point, bone thickness significantly became shorter and shorter. And 5.0mm palatal sagittal plane has more significance decrease of bone thickness than 2.5mm palatal sagittal plane. According to these results, we can conclude that the palatal installation of miniscrew between 2nd premolar and 1st molar is safest. And it is more safe that comes closer to midpalatal suture and to anterior area in regard to incisive canal.
|
|
|
KEYWORD
|
|
|
3-D imaging, Miniscrew, Maxillary sinus
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|