Volume and shape changes of mandibular condyles in growing patients treated with fixed Class II appliances using CBCT
Keywords:
condyle volume, fixed functional, forsus, advancesync IIAbstract
Objective: Evaluate the changes in the mandibular condyle volume and shape in growing Class II malocclusion patients, following the use of fixed functional Class II appliances (Forsus and Advacsync II). CBCT images were used to help understand which appliance might cause more changes. Methods: Twenty growing adolescent patients were randomly allocated to Two groups (Forsus and Advancesync II). A total of fourty CBCT images were taken pre- and posttreatment. The pre- and posttreatment CBCT images were segmented using a newly developed and validated semiautomatic condylar segmentation technique. and the quantitative assessment of the mean distance differences of the condyle surfaces was de using Iterative Closest Point technique. Results: A statistically significant increase in condylar volume was observed in both groups (Forsus and Advancesync II) and no significant differences in the magnitude of condylar volumes between both groups were found. There were no statistically significant changes in the mean distance differences of the condyles shape in both groups.Both groups (Forsus and Advancesync II) expressed different patterns of shape changes with no clear pattern associated with the treatment groups.
Downloads
References
Proffit WR, Fields HW, Larson BE, Sarver DM. Contemporary orthodontics2019.
Byloff FK, Darendeliler MA. Distal molar movement using the pendulum appliance. PartClinical and radiological evaluation. Angle Orthod. 1997;67(4):249-60.
Graber TM, Vanarsdall RL, Vig KWL, Huang GJ. Orthodontics : current principles andtechniques2017.
Pancherz H. Treatment of class II malocclusions by jumping the bite with the Herbstappliance. A cephalometric investigation. American journal of orthodontics. 1979;76(4):423-42.
McNamara JA, Jr., Peterson JE, Jr., Alexander RG. Three-dimensional diagnosis and
management of Class II malocclusion in the mixed dentition. Seminars in orthodontics.1996;2(2):114-37.
Pangrazio-Kulbersh V, Berger JL, Chermak DS, Kaczynski R, Simon ES, Haerian A.Treatment effects of the mandibular anterior repositioning appliance on patients with Class IImalocclusion. Am J Orthod Dentofacial Orthop. 2003;123(3):286-95.
Clark WJ. The twin block technique. A functional orthopedic appliance system. Am JOrthod Dentofacial Orthop. 1988;93(1):1-18.
Flores-Mir C, Barnett G, Higgins DW, Heo G, Major PW. Short-term skeletal and dentaleffects of the Xbow appliance as measured on lateral cephalograms. Am J Orthod DentofacialOrthop. 2009;136(6):822-32.
Owtad P, Park JH, Shen G, Potres Z, Darendeliler MA. The biology of TMJ growthmodification: a review. Journal of dental research. 2013;92(4):315-21.
Miron RJ, Zhang YF. Osteoinduction: a review of old concepts with new standards.Journal of dental research. 2012;91(8):736-44.
Al-Saleh MA, Alsufyani N, Flores-Mir C, Nebbe B, Major PW. Changes intemporomandibular joint morphology in class II patients treated with fixed mandibularrepositioning and evaluated through 3D imaging: a systematic review. Orthod Craniofac Res.
;18(4):185-201.
Kyburz KS, Eliades T, Papageorgiou SN. What effect does functional appliancetreatment have on the temporomandibular joint? A systematic review with meta-analysis. ProgOrthod. 2019;20(1):32.
Voudouris JC, Woodside DG, Altuna G, Angelopoulos G, Bourque PJ, Lacouture CY, etal. Condyle-fossa modifications and muscle interactions during Herbst treatment, Part 2. Results
and conclusions. Am J Orthod Dentofacial Orthop. 2003;124(1):13-29.
VanLaecken R, Martin CA, Dischinger T, Razmus T, Ngan P. Treatment effects of thedgewise Herbst appliance: a cephalometric and tomographic investigation. Am J OrthodDentofacial Orthop. 2006;130(5):582-93.
Paulsen HU. Morphological changes of the TMJ condyles of 100 patients treated with theHerbst appliance in the period of puberty to adulthood: a long-termradiographic study. Eur J
Orthod. 1997;19(6):657-68.
Adenwalla ST, Kronman JH, Attarzadeh F. Porion and condyle as cephalometriclandmarks--an error study. Am J Orthod Dentofacial Orthop. 1988;94(5):411-5.
Mah JK, Huang JC, Choo H. Practical applications of cone-beam computed tomographyin orthodontics. Journal of the American Dental Association (1939). 2010;141 Suppl 3:7s-13s.
Shukla S, Chug A, Afrashtehfar KI. Role of Cone Beam Computed Tomography in Diagnosis and Treatment Planning in Dentistry: An Update. Journal of International Society of Preventive & Community Dentistry. 2017;7(Suppl 3):S125-s36.
Suryasa, I. W., Rodríguez-Gámez, M., & Koldoris, T. (2021). Get vaccinated when it is your turn and follow the local guidelines. International Journal of Health Sciences, 5(3), x-xv. https://doi.org/10.53730/ijhs.v5n3.2938
Herliah, A., Baso, Y. S., Hidayanty, H., Syarif, S., Aminuddin, A., & Bahar, B. (2022). Effect of web-based she smart education models on adolescent girl’s knowledge, attitudes, and practice about obesity. International Journal of Health & Medical Sciences, 5(1), 50-55. https://doi.org/10.21744/ijhms.v5n1.1832
Published
How to Cite
Issue
Section
Copyright (c) 2022 International journal of health sciences
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Articles published in the International Journal of Health Sciences (IJHS) are available under Creative Commons Attribution Non-Commercial No Derivatives Licence (CC BY-NC-ND 4.0). Authors retain copyright in their work and grant IJHS right of first publication under CC BY-NC-ND 4.0. Users have the right to read, download, copy, distribute, print, search, or link to the full texts of articles in this journal, and to use them for any other lawful purpose.
Articles published in IJHS can be copied, communicated and shared in their published form for non-commercial purposes provided full attribution is given to the author and the journal. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
This copyright notice applies to articles published in IJHS volumes 4 onwards. Please read about the copyright notices for previous volumes under Journal History.
