Nance弓-横腭杆-双磨牙带环联合支抗与口外弓增强磨牙支抗的比较研究
Nance궁-횡악간-쌍마아대배연합지항여구외궁증강마아지항적비교연구
Comparative study of Nance-TPA-double molars band combined anchorage and facebow in reinforcing the upper first molar anchorage
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