학술논문
Changes in the alveolar bone morphology among different patterns of incisor inclination during the alignment phase in orthodontic treatment without premolar extraction.
Document Type
Academic Journal
Author
Kobylyanskyy O; Center for Clinical Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.; International School of Progressive Orthodontics, Kyiv, Ukraine.; Shupyk National Healthcare University of Ukraine, Kyiv, Ukraine.; Schwarz L; Division of Orthodontics, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.; Rausch MA; Division of Orthodontics, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.; Kobylyanska A; International School of Progressive Orthodontics, Kyiv, Ukraine.; Andrukhov O; Competence Center for Periodontal Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.; Rausch-Fan X; Center for Clinical Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.; Clinical Division of Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.
Source
Publisher: Blackwell Munksgaard Country of Publication: England NLM ID: 101144387 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1601-6343 (Electronic) Linking ISSN: 16016335 NLM ISO Abbreviation: Orthod Craniofac Res Subsets: MEDLINE
Subject
Language
English
Abstract
Objective: The present study investigated bone remodelling in the upper and lower incisor regions depending on the inclination pattern during the alignment phase of orthodontic treatment (OT).
Materials and Methods: This prospective clinical study included 71 patients undergoing OT without premolar extraction. Cone beam computed tomography scans were taken before and after the alignment phase and the changes in the inclination, alveolar bone height (ABH) and bone thickness (BT) at levels 2, 3, 4, 6, 8 and 9 mm starting from the cementoenamel junction (CEJ) were determined.
Results: Teeth were divided into 'Retroinclination' (lingual crown inclination <0°), 'Proclination-low' (buccal crown inclination between 0° and 5°), or 'Proclination-high' (buccal crown inclination >5°). The alignment phase of OT resulted in ABH loss. The highest ABH loss in the maxilla was observed on the buccal side in the 'Proclination-high' and was 0.71 mm. ABH loss by 1.1 mm was observed in the mandible on the lingual side in the 'Retroinclination' group. The most significant changes in BT by up to 2 mm were observed at levels 6, 8 and 9 mm and these changes exhibited a moderate to strong correlation with the alterations in the inclination of individual incisors. At levels 2, 3 and 4 mm, the highest decrease in BT by up to 0.83 mm was observed on the palatal side of upper incisors in the 'Proclination-high' group.
Conclusion: The direction and amount of tooth inclination partially determine changes in the bone parameters during the alignment phase.
(© 2024 The Authors. Orthodontics & Craniofacial Research published by John Wiley & Sons Ltd.)
Materials and Methods: This prospective clinical study included 71 patients undergoing OT without premolar extraction. Cone beam computed tomography scans were taken before and after the alignment phase and the changes in the inclination, alveolar bone height (ABH) and bone thickness (BT) at levels 2, 3, 4, 6, 8 and 9 mm starting from the cementoenamel junction (CEJ) were determined.
Results: Teeth were divided into 'Retroinclination' (lingual crown inclination <0°), 'Proclination-low' (buccal crown inclination between 0° and 5°), or 'Proclination-high' (buccal crown inclination >5°). The alignment phase of OT resulted in ABH loss. The highest ABH loss in the maxilla was observed on the buccal side in the 'Proclination-high' and was 0.71 mm. ABH loss by 1.1 mm was observed in the mandible on the lingual side in the 'Retroinclination' group. The most significant changes in BT by up to 2 mm were observed at levels 6, 8 and 9 mm and these changes exhibited a moderate to strong correlation with the alterations in the inclination of individual incisors. At levels 2, 3 and 4 mm, the highest decrease in BT by up to 0.83 mm was observed on the palatal side of upper incisors in the 'Proclination-high' group.
Conclusion: The direction and amount of tooth inclination partially determine changes in the bone parameters during the alignment phase.
(© 2024 The Authors. Orthodontics & Craniofacial Research published by John Wiley & Sons Ltd.)