Year : 2021

Volume : Volume 12

Issue : Issue 5

Address for correspondence :
Dr. Jyoti Kundu,
kundu19@yahoo.co.in

Abstract

Background: Decalcification or demineralization is the loss of calcified tooth material. The dissolution takes place due to the acid produced by bacteria present in dental plaque. The present study was conducted to compare demineralization around orthodontic brackets cured by conventional method and transillumination method. Materials and Methods: The study was conducted to compare demineralization around orthodontic brackets cured by conventional method and transillumination method. Eighty freshly extracted human premolar teeth were taken for the study and divided into four groups. Group 1: Twenty teeth were cured by conventional method of bonding by curing labially for 40 s, Group 2: Twenty teeth were cured for 50 s by transillumination, Group 3: Twenty teeth were cured labially for 20 s followed by 30 s of transillumination, and Group 4: Twenty teeth were first cured by transillumination for 30 s followed by labial curing for 20 s. A score was assigned to the different degrees of microleakage at the demineralization zone around enamel-adhesive-bracket complex at the occlusal, middle, and gingival margins. Results: On comparing demineralization scores within each study group, in Group 1, demineralization on middle side (923.24) was significantly higher than cervical side (834.03) and occlusal side (645.12). Within Group 2, demineralization on occlusal side (1048.35) was significantly higher than cervical side (1003.67) and middle side (879.25). Within Group 3, demineralization on cervical side (605.41) was significantly higher than middle side (542.83) and occlusal side (534.89). Within Group 4, demineralization on cervical side (454.65) was significantly higher than middle side (442.87) and occlusal side (329.45). When comparing demineralization scores among different groups, on the occlusal side, Group 2 shows significantly higher demineralization score than other study groups. On middle side, Group 1 shows significantly higher demineralization score. On cervical side, Group 2 shows significantly higher demineralization. Conclusion: The present study concluded that transillumination for 30 s followed by labial curing for 20 s showed minimum demineralization.

Keywords: Conventional bonding, Curing, Transillumination.