Comparative in-vivo bond failure rate of orthodontic brackets when bracket base is treated with micro-abrasive blasting vs . acid etching: eighteen month randomized control trial and scanning electron microscope study.

Autor: Durrani OK; School of Dentistry, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan., Raja UB; Department of Orthodontics, Islamic International Dental College, Riphah International University, Islamabad, Pakistan., Chaudhary FA; School of Dentistry, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan., Hamid U; Department of Oral Surgery, King's College London Hospital, London, United Kingdom., Javed MQ; Department of Operative Dentistry, Islamic International Dental College, Riphah International University, Islamabad, Pakistan., Atique S; College of Dental Medicine, Qatar University, Doha, Qatar., Habib SR; Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
Jazyk: angličtina
Zdroj: PeerJ [PeerJ] 2024 Jun 28; Vol. 12, pp. e17645. Date of Electronic Publication: 2024 Jun 28 (Print Publication: 2024).
DOI: 10.7717/peerj.17645
Abstrakt: Background: The aim of this study was threefold. Firstly, it aimed to introduce and detail a novel method for chemically etching the bases of stainless-steel orthodontic brackets. Secondly, the study sought to investigate the structural alterations within the brackets' microstructure following chemical etching compared to those with sandblasted bases, using electron microscopy analysis. Lastly, the study aimed to evaluate and compare the long-term durability and survivability of orthodontic brackets with chemically etched bases versus those with sandblasted bases, both bonded using the conventional acid etch technique with Transbond XT adhesive, over an 18-month follow-up period.
Methods: The study was a randomized clinical control trial with triple blinding and split-mouth study design and consisted of two groups. The brackets in the sandblasted group were prepared by sandblasting the intaglio surface of the base of the bracket with 50 µm SiO 2 particles. Hydrofluoric acid was used to roughen the base in the acid-etched group. The bases of the brackets were viewed under an electron microscope to analyze the topographical changes.
Results: A total of 5,803 brackets (3,006 acid-etch, 2,797 sandblasted) in 310 patients were bonded, in a split-mouth design by the same operator. The patients were followed for 18 months. The failure rate of 2.59% and 2.7% was noted in an acid-etched and sandblasted group, respectively. There was a close approximation of curves in the Kaplan-Meier plot, and the survival distribution of the two groups in the log-rank (Mantel-Cox) test was insignificant; x2 = 0.062 ( P value = 0.804).
Conclusion: Acid etching if the bases of the brackets can be used as an alternative to sandblasting furthermore acid etching can be performed on the chair side.
Competing Interests: The authors declare that they have no competing interests.
(© 2024 Durrani et al.)
Databáze: MEDLINE
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