Enamel Polishing after Orthodontic Bracket Debonding using two Different Protocols and two Different Adhesives.

Many techniques were developed for enamel polishing after orthodontic bracket debonding to keep the enamel surface as smooth as possible to pretreatment condition, in addition to many bracket adhesives used for orthodontic brackets bonding. This study aimed to compare the effect of two different adhesive materials and polishing protocols on enamel surface roughness after debonding of orthodontic brackets. Forty maxillary premolars were divided into four groups, orthodontic brackets were bonded using two different adhesive materials (Resilience LC Orthodontic Adhesive from Orthotechnology and Bisco Ortho bracket paste LC from Bisco). After brackets debonding adhesive remnants were removed using carbide bur followed by either Enhance Finishing tip then Prisma Gloss Polishing Cup with Prisma Gloss Polishing Paste or High Shine Enamel Polisher and Astropol green polishing cups. Then Atomic force microscope was used to evaluate surface roughness parameters among groups. The roughness data were statistically analyzed with Tukey post hoc test. Results showed significantly lower surface roughness parameters with Bisco Ortho bracket paste group compared with Resilience LC Orthodontic Adhesive group when both were polished with Enhance Finishing tip and Prisma Gloss Polishing Paste. Additionally, significantly lower Sz (Ten points height) value was seen with Bisco Ortho bracket paste group polished with Enhance Finishing tip and Prisma Gloss Polishing Paste in comparison with Resilience LC Orthodontic Adhesive polished with High Shine Enamel Polisher and Astropol green polishing cups. Pre-mounted, aluminum oxide impregnated, cured urethane dimethacrylate resin finishers tips (Enhance finishing tips) with a fine-grit aluminum-oxide polishing paste (Prisma Gloss Polishing Paste) could produce smoother enamel surface than 5 micron diamond grit suspended in resilient silicone tip (high shine enamel polisher) followed by Multipleuse polishing cups consist of silicone rubber and silicon carbide particles (Astropol green polishing cups) when Bisco Ortho bracket paste LC used. [ABSTRACT FROM AUTHOR]