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Nonsurgical correction of a Class III malocclusion in an adult by miniscrew-assisted mandibular dentition distalization.
Am J Orthod Dentofacial Orthop. 2013 Jun; 143(6):877-87.AJ

Abstract

This article reports the successful use of miniscrews in the mandible to treat a 20-year-old Mongolian woman with a chief complaint of anterior crossbite. The patient had a skeletal Class III malocclusion with a mildly protrusive mandible, an anterior crossbite, and a deviated midline. In light of the advantages for reconstruction of the occlusal plane and distal en-masse movement of the mandibular arch, we used a multiloop edgewise archwire in the initial stage. However, the maxillary incisors were in excessive labioversion accompanied by little retraction of the mandibular incisors; these results were obviously not satisfying after 4 months of multiloop edgewise archwire treatment. Two miniscrews were subsequently implanted vertically in the external oblique ridge areas of the bilateral mandibular ramus as skeletal anchorage for en-masse distalization of the mandibular dentition. During treatment, the mandibular anterior teeth were retracted about 4.0 mm without negative lingual inclinations. The movement of the mandibular first molar was almost bodily translation. The maxillary incisors maintained good inclinations by rotating their brackets 180° along with the outstanding performance of the beta-titanium wire. The patient received a harmonious facial balance, an attractive smile, and ideal occlusal relationships. The outcome was stable after 1 year of retention. Our results suggest that the application of miniscrews in the posterior area of the mandible is an effective approach for Class III camouflage treatment. This technique requires minimal compliance and is particularly useful for correcting Class III patients with mild mandibular protrusion and minor crowding.

Authors+Show Affiliations

State Key Laboratory of Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Case Reports
Journal Article

Language

eng

PubMed ID

23726338

Citation

Jing, Yan, et al. "Nonsurgical Correction of a Class III Malocclusion in an Adult By Miniscrew-assisted Mandibular Dentition Distalization." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 143, no. 6, 2013, pp. 877-87.
Jing Y, Han X, Guo Y, et al. Nonsurgical correction of a Class III malocclusion in an adult by miniscrew-assisted mandibular dentition distalization. Am J Orthod Dentofacial Orthop. 2013;143(6):877-87.
Jing, Y., Han, X., Guo, Y., Li, J., & Bai, D. (2013). Nonsurgical correction of a Class III malocclusion in an adult by miniscrew-assisted mandibular dentition distalization. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 143(6), 877-87. https://doi.org/10.1016/j.ajodo.2012.05.021
Jing Y, et al. Nonsurgical Correction of a Class III Malocclusion in an Adult By Miniscrew-assisted Mandibular Dentition Distalization. Am J Orthod Dentofacial Orthop. 2013;143(6):877-87. PubMed PMID: 23726338.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nonsurgical correction of a Class III malocclusion in an adult by miniscrew-assisted mandibular dentition distalization. AU - Jing,Yan, AU - Han,Xianglong, AU - Guo,Yongwen, AU - Li,Jingyu, AU - Bai,Ding, PY - 2012/05/01/received PY - 2012/05/01/revised PY - 2012/05/01/accepted PY - 2013/6/4/entrez PY - 2013/6/4/pubmed PY - 2013/8/2/medline SP - 877 EP - 87 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 143 IS - 6 N2 - This article reports the successful use of miniscrews in the mandible to treat a 20-year-old Mongolian woman with a chief complaint of anterior crossbite. The patient had a skeletal Class III malocclusion with a mildly protrusive mandible, an anterior crossbite, and a deviated midline. In light of the advantages for reconstruction of the occlusal plane and distal en-masse movement of the mandibular arch, we used a multiloop edgewise archwire in the initial stage. However, the maxillary incisors were in excessive labioversion accompanied by little retraction of the mandibular incisors; these results were obviously not satisfying after 4 months of multiloop edgewise archwire treatment. Two miniscrews were subsequently implanted vertically in the external oblique ridge areas of the bilateral mandibular ramus as skeletal anchorage for en-masse distalization of the mandibular dentition. During treatment, the mandibular anterior teeth were retracted about 4.0 mm without negative lingual inclinations. The movement of the mandibular first molar was almost bodily translation. The maxillary incisors maintained good inclinations by rotating their brackets 180° along with the outstanding performance of the beta-titanium wire. The patient received a harmonious facial balance, an attractive smile, and ideal occlusal relationships. The outcome was stable after 1 year of retention. Our results suggest that the application of miniscrews in the posterior area of the mandible is an effective approach for Class III camouflage treatment. This technique requires minimal compliance and is particularly useful for correcting Class III patients with mild mandibular protrusion and minor crowding. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/23726338/Nonsurgical_correction_of_a_Class_III_malocclusion_in_an_adult_by_miniscrew_assisted_mandibular_dentition_distalization_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(13)00165-0 DB - PRIME DP - Unbound Medicine ER -