Correction of Deep Overbite by Using a Modified Nance Appliance in an Adult Class II Division 2 Patient with Dehiscence Defect

Zhujun Li; Zhengxi Chen; Jian Sun; Li'an Yang; Zhenqi Chen

doi:10.1155/2018/9563875

Correction of Deep Overbite by Using a Modified Nance Appliance in an Adult Class II Division 2 Patient with Dehiscence Defect

Case Rep Dent. 2018 Sep 6:2018:9563875. doi: 10.1155/2018/9563875. eCollection 2018.

Authors

Zhujun Li¹, Zhengxi Chen¹, Jian Sun², Li'an Yang³, Zhenqi Chen¹

Affiliations

¹ Department of Orthodontics, Shanghai Ninth People's Hospital, School of Stomatology, Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University, Shanghai, China.
² Department of Stomatology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.
³ Department of Stomatology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

Abstract

A modified Nance Appliance (MNA) is introduced as a treatment option for an adult class II division 2 malocclusion (CII/2) patient with deep overbite and dehiscence on the facial root surface of retroclined upper incisors through the cone-beam computed tomography (CBCT). Indications for this modified MNA as well as a brief description of fabrication procedure and biomechanical analysis of the treatment effects are shown in detail. Root control and absolute intrusion without enlarging the bony defect were achieved. The treatment results were satisfying and favorable.

Publication types

Case Reports