[Combination of NITI cantilever arm and casting frame in correcting lingually inclined mandibular molar].

Purpose: To study the effect of NITI cantilever arm in correcting lingually inclined mandibular molar.

Methods: Sixteen patients whose single mandibular second molar was lingually inclined were chosen. The intra-mandibular anchorage was achieved by means of cast frame which connected the bilateral mandibular posterior teeth.

[Cone beam computed tomographic analysis of cortical bone thickness of upper molar region for miniscrew].

Purpose: To quantitatively evaluate the cortical bone thickness at upper molar miniscrew sites.

Methods: Sixty Angle's Class II division I patients were involved in this study(30 males and 30 females), measurements of cortical bone thickness were done with cone beam computer tomography(CBCT) scanning. The contact point of upper second premolar and upper first molar was chosen for center of coordinate.