Assessment of the Bond Strength of Orthodontic Bracket on Ceramic Crown Surface Using Three Various Bonding Agents: A Comparative Study.

Abstract

Aim: The current study's aim was to evaluate the orthodontic bracket's bond strength employing three different bonding agents on a ceramic crown surface.

Materials and methods: Tooth preparation on 60 permanent maxillary premolar teeth extracted for orthodontic purposes was carried out. Supragingival finishing margins were made for all samples, and ceramic (PFM) crowns were fabricated. Following crown cementation on the prepared samples, they were divided into three experimental groups randomly (n = 20) as follows: group I: Bracket bonding using Transbond XT bonding agent; group II: Bracket bonding using RelyX^TM Unicem bonding agent; and group III: Bracket bonding using Assure Plus bonding agent. A universal testing machine was utilized to conduct the shear bond strength test. Using a stereomicroscope with a 10× magnification, adhesive remnant index scores were also used to assess the adhesive that was remaining on the surfaces. Data was recorded and statistically analyzed.

Results: The highest bond strength was found in RelyX^TM Unicem bonding agent (19.38 ± 0.84) followed by Transbond XT bonding agent (17.12 ± 1.04) and Assure Plus bonding agent (16.14 ± 1.02). A highly significant difference was found between Transbond XT vs RelyX^TM Unicem groups and RelyX^TM Unicem vs Assure Plus groups. There was no significant difference found between Transbond XT and Assure Plus (p > 0.001). Adhesive Remnant Index scores showed that score 1 was higher [7 (35%)] in the Transbond XT bonding agent group. Score 1 was 8 (40%) and score 2 was 6 (30%) in RelyX^TM Unicem bonding agent groups and in Assure Plus bonding agent group, score 2 was higher [9 (45%)].

Conclusion: In conclusion, RelyX^TM Unicem exhibited superior bond strength with ceramic crowns when compared to Assure Plus and Transbond XT bonding agents.

Clinical significance: One of the most important steps in orthodontic therapy is bonding brackets to the teeth. A high enough and long-lasting bond between brackets and artificial surfaces is necessary for orthodontic treatment to be successful, as is the requirement for a bonding agent with the highest possible binding strength. The necessity for a more dependable process to glue the artificial crown surface has arisen due to the rise in adult patients seeking fixed orthodontic treatment. How to cite this article: Brajendu, Haque I, Sam G, et al. Assessment of the Bond Strength of Orthodontic Bracket on Ceramic Crown Surface Using Three Various Bonding Agents: A Comparative Study. J Contemp Dent Pract 2024;25(8):762-765.