Anja Quast1, Petra Santander2, Johanna Leding2, Daniela Klenke2, Norman Moser3, Henning Schliephake3, Philipp Meyer-Marcotty2. 1. Department of Orthodontics, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Goettingen, Germany. anja.quast@med.uni-goettingen.de. 2. Department of Orthodontics, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Goettingen, Germany. 3. Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Robert-Koch-Str. 40, 37075, Goettingen, Germany.
Abstract
OBJECTIVES: Sufficient dental decompensation is crucial for treatment success in combined orthodontic-surgical treatment. The study's objective was to determine the treatment success and efficiency in sagittal, vertical, and transversal decompensation. METHODS: This longitudinal, observational study enrolled 52 adult patients, who underwent orthodontic-surgical treatment. Incisor inclinations and positions as well as skeletal changes were assessed pre-treatment (T1), pre-surgical (T2), and post-surgical (T3) by lateral cephalograms and CBCT scans. RESULTS: Incisor decompensation was insufficient in all three dimensions. Sagittal: treatment efficiency did not differ between class II and III patients. Vertical: patients with open bite demonstrated pre-surgical bite deepening and insufficient surgical reduction of the maxillomandibular plane angle. Transversal: Dental midline deviations were not adapted to the skeletal asymmetry so that menton deviations were not properly corrected. CONCLUSIONS: Incisor decompensation was not as successful as requested in all three dimensions and the treatment ideal was seldom achieved. CLINICAL RELEVANCE: To improve the skeletal outcome, the orthodontist has to treat the patient with the desired surgical movements in mind and should critically evaluate the pre-surgical incisor decompensation before referral to the surgical team.
OBJECTIVES: Sufficient dental decompensation is crucial for treatment success in combined orthodontic-surgical treatment. The study's objective was to determine the treatment success and efficiency in sagittal, vertical, and transversal decompensation. METHODS: This longitudinal, observational study enrolled 52 adult patients, who underwent orthodontic-surgical treatment. Incisor inclinations and positions as well as skeletal changes were assessed pre-treatment (T1), pre-surgical (T2), and post-surgical (T3) by lateral cephalograms and CBCT scans. RESULTS: Incisor decompensation was insufficient in all three dimensions. Sagittal: treatment efficiency did not differ between class II and III patients. Vertical: patients with open bite demonstrated pre-surgical bite deepening and insufficient surgical reduction of the maxillomandibular plane angle. Transversal: Dental midline deviations were not adapted to the skeletal asymmetry so that menton deviations were not properly corrected. CONCLUSIONS: Incisor decompensation was not as successful as requested in all three dimensions and the treatment ideal was seldom achieved. CLINICAL RELEVANCE: To improve the skeletal outcome, the orthodontist has to treat the patient with the desired surgical movements in mind and should critically evaluate the pre-surgical incisor decompensation before referral to the surgical team.
Authors: A Quast; P Santander; D Witt; A Damm; N Moser; H Schliephake; P Meyer-Marcotty Journal: Int J Oral Maxillofac Surg Date: 2018-09-13 Impact factor: 2.789
Authors: Anthony J Ireland; Susan J Cunningham; Aviva Petrie; Martyn T Cobourne; Priti Acharya; Jonathan R Sandy; Nigel P Hunt Journal: J Orthod Date: 2014-06