Articles Vol. 64 No. 2 15/03/2023

21. EVALUATING HARD TISSUE AND SOFT TISSUE CHANGES AFTER TREATMENT OF CLASS II ANGLE MALOCCLUSION WITH MBT BRACKET SYSTEM AT CAN THO THE UNIVERSITY OF MEDICAL AND FACIAL DENTAL

Le Nguyen Lam1,2, Nguyen Thuy Xuan1,2
1 Can Tho University of Medicine and Pharmacy
2 Trường Đại Học Y Dược Cần Thơ
Corresponding author: lenguyenlam@ctump.edu.vn
DOI: 10.52163/yhc.v64i2.623
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Keywords
Cephalometric, class II malocclusion, soft tissue, bone tissue.
Abstract

Background: Analysis of cephalometric films plays an important role in diagnosis and treatment
planning. Film measurements were used to classify malocclusion and to compare post-treatment
change.
Objective: To evaluate the results of hard and soft tissue changes after treatment of Class II Angle
malocclusion with the MBT bracket system at the Department of Odonto-Stomatology, Can Tho
University of Medicine and Pharmacy.
Materials and methods: The study was conducted on 31 patients with Class II Angle malocclusion
at the Department of Odonto-Stomatology, Can Tho University of Medicine and Pharmacy. Conduct
orthopedic treatment of class II Angle malocclusion. Evaluation of changes in bones, teeth, and soft
tissue on cephalometric radiographs and all X-ray films will be analyzed by specialized software
with copyright V-ceph 6.0. Compare the indicators on the film before and after treatment.
Results: The index of the angle SNA, ANB, OP-SN, and SN-GoGn changed before and after
treatment, with statistical significance (p<0.05). The change in SNB angle after treatment was not
statistically significant. However, the difference in dental measurements was statistically significant
(p<0.05). Compared with the S aesthetic line, the protrusion of the upper lip and the lower lip
decreased respectively by 1.10 ± 0.72mm and 0.68 ±1.06mm.

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