Molar tilting after space closure｜【Chris Chang Ortho】CC597
14:10
Discrepancy Index｜【Chris Chang Ortho】CC532
17:12
BT & Elastics｜Timing & Position 咬合墊高與橡皮筋的使用時機與位置-Part 2｜【Chris Chang Ortho】CC542
6:19
Tip for Fixed Retainer｜【Chris Chang Ortho】CC591
8:15
Crazy non extraction for Bimax & crowding
7:26
Extruding Maxillary Lateral Incisors with Clear Aligners｜【Chris Chang Ortho】555
9:31
Open Bite Correction - 2020 AAO Winter Chris Chang - 3｜【Chris Chang Ortho】CC541
5:51
Expansion in Aligners｜【Chris Chang Ortho】CC812
5:50