Mandibular posterior anatomic limit for molar distalization
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| Titel: | Mandibular posterior anatomic limit for molar distalization |
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| Autoren: | Young Chel Park, Tae Hyun Choi, Kee Joon Lee, Sung Jin Kim, Hyoung Seon Baik |
| Weitere Verfasser: | Sung-Jin Kim, Tae-Hyun Choi, Hyoung-Seon Baik, Young-Chel Park, Kee-Joon Lee, Choi, Tae Hyun, Kim, Sung Jin, Park, Young Chel, Baik, Hyoung Seon, Lee, Kee Joon |
| Quelle: | American Journal of Orthodontics and Dentofacial Orthopedics. 146:190-197 |
| Verlagsinformationen: | Elsevier BV, 2014. |
| Publikationsjahr: | 2014 |
| Schlagwörter: | Adult, Adolescent, Tooth Movement Techniques, Cephalometry, Image Processing, Tooth Root/diagnostic imaging, Mandible, Imaging, Young Adult, 03 medical and health sciences, Dental Arch/diagnostic imaging, Molar/anatomy & histology, Dental Arch, Imaging, Three-Dimensional, 0302 clinical medicine, Tooth Root/anatomy & histology, Three-Dimensional/methods, Computer-Assisted/methods, Image Processing, Computer-Assisted, Humans, Tooth Root, Tomography, X-Ray Computed/statistics & numerical data, Computer-Assisted/statistics & numerical data, Tooth Crown/diagnostic imaging, Tooth Crown, 2. Zero hunger, Mandible/anatomy & histology, Three-Dimensional/statistics & numerical data, Tooth Movement Techniques/methods, Cephalometry/statistics & numerical data, Molar, X-Ray Computed/methods, Dental Arch/anatomy & histology, Molar/diagnostic imaging, Mandible/diagnostic imaging, Cephalometry/methods, Tooth Crown/anatomy & histology, Tomography, X-Ray Computed, Algorithms |
| Beschreibung: | The purpose of this study was to investigate the mandibular posterior anatomic limit for molar distalization.Three-dimensional computed tomography scans were obtained on 34 adults with a skeletal Class I normodivergent facial profile and a normal occlusion. Posterior available space was measured at the crown and root levels along the posterior occlusal line connecting the buccal cusps of the first and second molars on the axial slices. It was also measured at the occlusal level on the lateral cephalograms derived from the computed tomography scans. The measurements on the cephalograms were used to predict the actual posterior available space determined by computed tomography and to determine the presence of root contact with the inner lingual cortex by linear regression and discriminant analyses, respectively.The posterior available space was significantly smaller at the root level than at the crown level. Root contact was observed in 35.3% of the 68 roots. The posterior available space measured on the lateral cephalograms resulted in a regression equation with a coefficient of determination of 0.261 to predict actual available space and correctly identified root contact in 66.2% of cases with a threshold value of 3.9 mm.The posterior anatomic limit appeared to be the lingual cortex of the mandibular body. Computed tomography scans are recommended for patients who require significant mandibular molar distalization. |
| Publikationsart: | Article |
| Dateibeschreibung: | 190~197 |
| Sprache: | English |
| ISSN: | 0889-5406 |
| DOI: | 10.1016/j.ajodo.2014.04.021 |
| Zugangs-URL: | https://pubmed.ncbi.nlm.nih.gov/25085302 https://www.sciencedirect.com/science/article/pii/S0889540614004752 https://ir.ymlib.yonsei.ac.kr/handle/22282913/100137 https://www.infona.pl/resource/bwmeta1.element.elsevier-2b4a4e37-d156-3b56-9175-5088eb66452e https://yonsei.pure.elsevier.com/en/publications/mandibular-posterior-anatomic-limit-for-molar-distalization https://snucm.elsevierpure.com/en/publications/mandibular-posterior-anatomic-limit-for-molar-distalization http://www.ncbi.nlm.nih.gov/pubmed/25085302 |
| Rights: | Elsevier TDM CC BY NC ND |
| Dokumentencode: | edsair.doi.dedup.....c38c811dbb333d0380fa62d8b03d6ea7 |
| Datenbank: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstract: | The purpose of this study was to investigate the mandibular posterior anatomic limit for molar distalization.Three-dimensional computed tomography scans were obtained on 34 adults with a skeletal Class I normodivergent facial profile and a normal occlusion. Posterior available space was measured at the crown and root levels along the posterior occlusal line connecting the buccal cusps of the first and second molars on the axial slices. It was also measured at the occlusal level on the lateral cephalograms derived from the computed tomography scans. The measurements on the cephalograms were used to predict the actual posterior available space determined by computed tomography and to determine the presence of root contact with the inner lingual cortex by linear regression and discriminant analyses, respectively.The posterior available space was significantly smaller at the root level than at the crown level. Root contact was observed in 35.3% of the 68 roots. The posterior available space measured on the lateral cephalograms resulted in a regression equation with a coefficient of determination of 0.261 to predict actual available space and correctly identified root contact in 66.2% of cases with a threshold value of 3.9 mm.The posterior anatomic limit appeared to be the lingual cortex of the mandibular body. Computed tomography scans are recommended for patients who require significant mandibular molar distalization. |
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| ISSN: | 08895406 |
| DOI: | 10.1016/j.ajodo.2014.04.021 |