Deepbite correction with incisor intrusion in adults: A long-term cephalometric study

• Published in: American journal of orthodontics and dentofacial orthopedics 2013-09, Vol.144 (3), p.414-419
• Main Authors: Kale Varlık, Selin, Onur Alpakan, Ödül, Türköz, Çağrı
• Format: Article
• Language: English
• Subjects: Adult; Analysis of Variance; Cephalometry; Dentistry; Female; Humans; Incisor; Longitudinal Studies; Male; Orthodontics, Corrective - instrumentation; Orthodontics, Corrective - methods; Overbite - therapy; Retrospective Studies; Secondary Prevention; Statistics, Nonparametric; Tooth Extraction; Tooth Movement Techniques - instrumentation; Tooth Movement Techniques - methods; Young Adult
• ISSN: 0889-5406; 1097-6752
• DOI: 10.1016/j.ajodo.2013.04.014

Introduction The purpose of this study was to investigate the long-term stability of deep overbite correction with mandibular incisor intrusion with utility arches in adult patients. Methods Pretreatment, posttreatment, and 5-years postretention lateral cephalograms of 31 patients (mean age, 26.8 years; range, 24.1-30.9 years) with Class II Division 1 malocclusion and deepbite, treated by maxillary first premolar extraction and mandibular incisor intrusion, were traced and measured. Results Significant decreases in overjet and overbite (6.4 ± 1.2 and 3.9 ± 0.7 mm, respectively), significant retroclination (17° ± 1.9°) and retraction (3.8 ± 1.1 mm) of the maxillary incisors, and significant increases in protrusion (0.8 ± 1.5 mm), proclination (0.6° ± 0.9°), and intrusion (2.6 ± 1.4 mm) of the mandibular incisors were observed at posttreatment. At postretention, there were statistically significant but clinically unimportant increases in overjet and overbite (0.4 ± 0.2 and 0.8 ± 0.4 mm, respectively) and extrusion of the mandibular incisors (0.8 ± 1.1 mm). Conclusions Correction of deepbite in nongrowing patients by mandibular incisor intrusion with a utility arch can be considered effective and stable.