Correction of a severe post-surgical iatrogenic class II anterior open bite with lingual appliances and mini-screws: a case report

Author:

Anh Nguyen Viet1ORCID,Ly Nguyen Thi Khanh1,Viet Hoang2ORCID,Marya Anand34ORCID

Affiliation:

1. Faculty of Dentistry, PHENIKAA University , Yen Nghia, Ha Dong, Hanoi 12116 , Vietnam

2. Department of Orthodontics and Pedodontics, Faculty of Dentistry , Van Lang University, 69/68 Dang Thuy Tram, Ward 13, Binh Thanh District, Ho Chi Minh City, 70000, Vietnam

3. Faculty of Dentistry , Department of Orthodontics, , No. 55, St. 180 Phnom Penh, 12211 , Cambodia

4. University of Puthisastra , Department of Orthodontics, , No. 55, St. 180 Phnom Penh, 12211 , Cambodia

Abstract

Abstract An iatrogenic open bite after orthognathic surgery is an uncommon malocclusion, with only one documented case reported in the literature. However, the open bite in this case report was not a true open bite, as it resulted from the interferences between the maxillary second molars and mandibular retromolar bones. This case report aims to present the management of a true iatrogenic open bite with posterior teeth in centric occlusion, occurring after mandibular setback surgery. The anterior open bite accompanied a severe class II malocclusion and increased lower anterior facial height. The patient was treated with fixed lingual appliances and mini-screws to distalize the entire maxillary arch and close the open bite. After treatment, a positive overbite and dental class I relationship was achieved. The treatment outcomes were stable at the 2-year follow-up. Lingual appliances combined with mini-screws may offer effective non-surgical management of iatrogenic open bite after orthognathic surgery. Clinical and Surgical Implications: Iatrogenic open bites can develop from various causes that include surgical options such as orthognathic surgery or in patients treated with occlusal splint therapy. These may be treated with the help of skeletal anchorage options such as orthodontic mini-screws.

Publisher

Oxford University Press (OUP)

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