ANTERIOR SUBAPICAL SCREW

ANTERIOR SUBAPICAL SCREW

“In the past, we usually had problems in using mini-screw anchorage to intrude incisors because the exposed part of mini-screw will cause mucosal ulcerations. The closed technique of the mini-screw insertion can reduce the possibilities of soft tissue ulceration. At first, a vertical incision about 2 mms was made in the neighborhood of the labial frenum before mini-screw insertion. After drilling about 2 or 3 threads of the screw into the cortical bone, change the inserting angle, about 45 degree to the occlusal plane to keep it from damaging the roots. The ligature wire should be tied on when the mini-screw is inserted to the level of the mucosal surface, and then keep on inserting the screw until it is imbedded under the mucosa. The twisted ligature wire was then placed into the slot on the platform of the mini-screw so that the ligature wire will not impinge the prominent dentoalveolus. Here are the two ways to hang power chain between extension hook and arch wire. One is using ligature wire to lead the last ring of the power chain pass through the first ring, letting the power chain tie on the arch wire, and then hang it on the hook with appropriate length. The other way is to hang one end of the power chain on the hook, and then tie the other end to the arch wire by ligature wire.”

Instruction provided by Dr. Johnny Joung-Lin, Liaw.

https://www.youtube.com/watch?v=duY8fgc3Cz8&list=PLj_zkwu5UQtRPo214UxiQAo8m0HPi0qpc&index=8

Warning:(1) It should be avoided to over-bend the screw before using. Otherwise, it will make it broken.(2) It should predrill a hole before implanting a screw if patients have hard bone density.(3) Please sterilize this product before using.(4) SINGLE USE ONLY.