Original Research

Year : 2024 | Volume : 15 | Issue : 4 | Page : 8-20

Comparative Evaluation of Wear Resistance and Colour Stability of Three Different Oral Mucosal Protectors - An In Vitro Study

Nisshitha Rao Setvaji1, Nivethigaa B2, Navaneethan R3

1-Post GraduateResident, 2-Associate Professor, 3-Professor, Department of Orthodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai-600077, India.

Address for Correspondence:

Dr Nivethigaa B,

Associate Professor, Department of Orthodontics, Saveetha Dental College and HospitalsSaveetha Institute of Medical and Technical Sciences, Chennai, India.

Email:nivethigaab.sdc@saveetha.com

Abstract

Background: With increase in demand of patient acceptability and comfort, light cured temporary oral mucosal protectors such as Muco Soft LC (Anabond) and Soft Flow (Dentos) have been recently developed to prevent mucosal injury during orthodontic treatment. This study aimed to evaluate the wear loss due to friction over a period of time and colour stability of three oral mucosal protectors: Muco Soft LC (MS), Soft Flow (SF) and Flowable composite (FC).

Methodology: Three groups having 10 samples each were subjected to a toothbrushing simulator and pre and post weights were measured to evaluate wear. Five samples from each group were immersed in either artificial saliva or mouthwash for 24 hours. Colour change was evaluated using a spectrophotometer.

Results: A significant difference in material loss seen in MS (P = 0.000) and SF (P = 0.005). FC showed the least material loss followed by MS and SF. MS was dislodged from the wire post toothbrushing simulation. The calculated mean colour change values (ΔE) revealed that FC had the least colour change followed by SF and MS.

Conclusion: Least wear loss was observed with flowable composite. Artificial saliva showed greater colour change in Muco Soft LC and flowable composite whereas mouthwash produced a greater colour change in Soft Flow.

FUNDING

Self-funded study.

AUTHOR CONTRIBUTIONS

Study conception and design: Nivethigaa B.; Data collection, analysis,and interpretation of results: Nisshitha Rao Setvaji; Draft manuscript preparation: Nisshitha Rao Setvaji, Nivethigaa B.; Revision of manuscript: Navaneethan R.

FINANCIAL DISCLOSURE STATEMENT

The authors declare there are no competing interests to declare.

CONFLICT OF INTEREST

The authors declare no conflicts of interest.

How to Cite this Article: Setvaji, N. R., B, N., & R, N. (2024). Comparative Evaluation of Wear Resistance and Colour Stability of Three Different Oral Mucosal Protectors - An In Vitro Study: Original Research. International Journal of Orthodontic Rehabilitation, 15(4), 8–20. https://doi.org/10.56501/intjorthodrehabil.v15i4.1119

Original Research

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.