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Performance of two laser motion modes versus conventional orthodontic ceramic brackets debonding technique on enamel surface topography

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Abstract

The risk of enamel deterioration that frequently coexists with debonding of orthodontic teeth brackets elevates the mandate for finding an optimum approach for debonding them without harmful effects. This in-vitro study is intended to compare the effects of two different laser modes (scanning and circular) and a conventional method on the enamel surface after debonding orthodontic brackets. 66 extracted premolars were assigned into 3 groups. After that, light-cure composite resin was used to attach the ceramic brackets to the teeth. Amongst the test groups, Group I: specimens that were debonded using conventional debonding using pliers; Group 2: specimens that were debonded using Er, Cr: YSGG laser applications using the circular motion method; and Group 3: specimens that were debonded using Er, Cr: YSGG laser applications using the scanning motion method. Adhesive Remnant Index (ARI) assessment, intra-pulpal temperature increase, enamel surface roughness after polishing, and assessment of the microstructure of enamel were carried out with scanning electron microscopy. The gathered information was examined statistically. The conventional debonding method had a significantly higher proportion of adhesive remnant index (ARI) scores of 2 and 3 in comparison to the circular (p < .004) and scanning laser groups (p < .001). There was no significant difference in ARI scores between the circular and scanning laser groups (p > .05). Moreover, the circular and scanning laser debonding methods resulted in a significantly higher proportion of Enamel Surface Roughness (ESR) scores of 0 and a lower proportion of ESR scores of 3 compared to the conventional technique group (p < .001). However, there was no significant difference in ESR scores between the circular and scanning laser methods (p = .945). Lastly, the average intra-pulpal temperature was significantly higher in the circular laser group (1.9 ± 0.5 ) compared to the scanning laser group (0.9 ± 0.2) with p < .001. Er, Cr: YSGG laser irradiation is a tool that shows promise for debonding ceramic brackets with minimal harm to the enamel surface. The scanning laser technique is more desirable due to the lower intra-pulpal temperature increase.

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Authors and Affiliations

  1. Basic Sciences, College of Science and Health Professions, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia

    Alarifi Abdulaziz

  2. King Abdullah International Medical Research Center, Riyadh, Saudi Arabia

    Alarifi Abdulaziz

  3. Oral Pathology, Faculty of Dentistry, October University for Modern Sciences and Arts (MSA), Giza, Egypt

    Moataz Mohamed El-Kholy & Sara Mohamed Ali

  4. Fixed Prosthodontics, Faculty of Dentistry, October University for Modern Sciences and Arts (MSA), Giza, Egypt

    Sherif Samir Bushra

  5. Orthodontics, Faculty of Dentistry, October University for Modern Sciences and Arts (MSA), Giza, Egypt

    Karim A. Shehab

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  1. Alarifi Abdulaziz
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  4. Sara Mohamed Ali
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Contributions

[Alaraifi] made a substantial contribution to the conceptual design of the manuscript and led to the methodology, data collection, compilation of results, and discussion sections. [Shehab and Elkholy] designed the models and helped with the interpretation of the results. [Shehab and Ali] contributed to the data collection and draft manuscript preparation. [Shehab] contributed to the writing of the manuscript. [Bushra and Alaraifi] contributed to the critical review of the manuscript for its intellectual content. All authors read and approved the final manuscript.

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Correspondence to Karim A. Shehab.

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Abdulaziz, A., El-Kholy, M.M., Bushra, S.S. et al. Performance of two laser motion modes versus conventional orthodontic ceramic brackets debonding technique on enamel surface topography. Lasers Med Sci 39, 156 (2024). https://doi.org/10.1007/s10103-024-04097-w

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