Comparative Evaluation Of Effect Of Curing Lights On Shear Bond Strength And Ari Of Different Adhesive Materials: An In Vitro Study

Abstract

ABSTRACT

Introduction: Orthodontists initially used bands to straighten teeth, but banding was intensive and prone to obstacles. With the advent of adhesives, the ideal adhesive should have optimal bond strength that can withstand orthodontic forces and leaving minimal residual after debonding.

Material and methods: This study comprised of 60 non-carious human premolars using three adhesive materials and six subgroups of LED curing lights (Low Intensity and High Intensity). Each subgroup had 10 samples bonded with metal brackets on the buccal surface using different adhesives at varying intensities and times. The specimens were tested for SBS using a UTM machine at 1mm/min, and the maximum load required to debond the bracket was recorded. Fracture modes were evaluated using a stereomicroscope.

Results:SBS was significantly higher in groups using high-intensity LED curing light, with Enlight having the highest, followed by Transbond XT and Heliosit. Low-intensity LED curing light showed a similar pattern, resulting in low ARI scores while high-intensity LED curing light increased them.

Conclusion:Both high-intensity and low-intensity LED curing lights bonded effectively, with no significant difference in SBS and ARI. High-intensity LED curing lights are recommended for time savings, patient, and orthodontist comfort.

Keywords: Bonding, Banding, SBS, LED and ARI.