Original Research
Keywords: Damon, MBT, arch dimension, 3D superimposition
Year : 2023 | Volume : 14 | Issue : 2 | Page : 44-53
Evaluation of Maxillary Transverse Arch Dimensions Following Leveling and Alignment with Different Archwire-Bracket Combinations During Fixed Appliance Treatment - A Retrospective Study
Havisha Nookala 1, Nivethigaa B 2 1Post Graduate, 2Assistant Professor, Saveetha Dental College and Hospitals, Department of Orthodontics and Dentofacial Orthopaedics, Saveetha Dental College and Hospitals Saveetha University, Chennai – 600077
Address for Correspondence
Dr. Nivethigaa Balakrishnan, MDS
Assistant Professor, Department of Orthodontics and Dentofacial Orthopaedics, Saveetha Dental College and Hospitals, Saveetha University, Chennai - 600077
Email: nivethigaab.sdc@saveetha.com.
Contact: +91 9524234613 / +91 9791972324
ABSTRACT
Background
Arch expansion is one of the non- extraction methods of gaining space. This study aims to assess and compare the arch expansion achieved during initial leveling and alignment with three different bracket-archwire combinations.
Material and Methods
This was a retrospective study done in a university setup. From the available patient information archives, records of 30 subjects based on their advocated bracket system were identified and categorized into three groups. Their pre-treatment (T0) and post aligning (T2) 3D model maxillary scans were superimposed according to the reference points marked on the third palatal rugae using an OrthoAnalyzer software (3 shape version 19.0) to assess the changes in inter-canine width (ICW), inter-premolar width (IPW) and intermolar width (IMW) and arch length. For the recorded data, descriptive statistics, One-way ANOVA and Tukey HSD post hoc were analyzed using SPSS software.
Results
In Group 1 with MBT prescription with conventional nitinol archwires, the intra-group comparisons revealed no significant change (p value = 0.180). In Group 3 with ceramic MBT brackets with HANT archwires, the intragroup comparisons revealed no significant difference (p value = 0.414). However, in Group 2- Damon self-ligating bracket with broad archwires, intra-group comparisons revealed significant differences in inter-canine and interpremolar widths (p value = 0.048 and p value = 0.044, respectively).
Conclusion
The study aimed at evaluating transverse maxillary arch dimension changes with different bracketarchwire combinations. Maximum changes in the transverse dimension at ICW and IPW were noticed among all the three groups with maximum in Group 2 (passive self-ligating bracket with broad archwires). Although the inter-group comparisons revealed no statistically significant difference, it was appreciated clinically in relieving dental crowding. Keywords: Damon, MBT, arch dimension, 3D superimposition
Keywords: Damon, MBT, arch dimension, 3D superimposition.
FUNDING SOURCE
No associated funding from agencies in the public, commercial or non-profit sectors.
CONFLICTS OF INTEREST
The authors declare no conflict of interest.
How to cite this article: Evaluation of Maxillary Transverse Arch Dimensions Following Leveling and Alignment with Different Archwire-Bracket Combinations During Fixed Appliance Treatment - A Retrospective Study. Int J Orthod Rehabil 2023; 14 (2) 44- 53.