Methods: 64 frontal and premolars were bonded using 4 different ceramic brackets and later debonded through a Er:YAG laser (600mJ, 2 Hz, no air, no waterspray). The laser was applied for 0.5s with no movement and just the middle point in the slot of the brackets. After debonding, the adhesive remnant index (ARI), the incidence of bracket failure and enamel fracture, and patient response were compared among the groups.
Results: There was no case of enamel fracture or bracket fracture in the clinical examination of the debonded group. Significant high ARI scores were observed in the groups. Laser debonding caused a significant decrease in the frequency of enamel cracks. Patient did not feel any pain and sensitivity during and after treatment. They had follow-up for 3 months without any experience of discomfort.
Conclusions: Laser-assisted debonding of ceramic brackets without using any external load could reduce the risk of enamel damage and bracket fracture. It also produces the more desirable ARI scores without causing thermal damage to the pulp.