An In-Vitro Comparison of Shear Bond Strength and Adhesive Remnant Score Between Two Color Change Adhesives in Orthodontic Bonding With Reduced Curing Time Using Different High-Intensity Light Emitting Diode Units

Aim and objectives: This study aims to determine the effect on shear bond strength (SBS) adhesive remnant score between two color change adhesives (CCAs) with reduced curing time using different high-intensity light emitting diode (LED) units. Materials methods: A total of 108 human first maxillary premolar teeth were randomly allocated into three principal groups (n = 36) based type used. The include CCAs: Transbond Plus Color Change Adhesive (3M, St. Paul, MN, USA) Grengloo (Ormco, Orange, CA, USA), conventional tooth-colored adhesive: XT (3M). Each group was further divided sub-groups 12 each) LED units used for bonding stainless steel brackets. Woodpecker iLED Light Curing Unit (Guilin Medical Instrument Co., Ltd., Guilin, China) cured six seconds, ELIPAR S10 (3M) 20 seconds. Bonding brackets done in a standardized manner following manufacturers' instructions. All samples submerged distilled water at 370C 24 hours. SBS testing performed an Instron machine, residue debonded surface examined scored stereomicroscope. Statistical analysis conducted one-way ANOVA Tukey’s post-hoc test. Results: results showed significant differences resin seconds exhibited higher values (15.5 - 22.82 Megapascals [MPa]) followed by (12.17 18.14 MPa) (11.31 11.74 groups. demonstrated highest among types adhesives. predominant scores 2 3. Conclusions: demonstrates superior compared XT. Both experience failure within layer, regardless intensity or time.