Comparative evaluation of enamel surface roughness after debonding using four finishing and polishing systems for residual resin removal\u2014an in vitro study

Abstract

BackgroundOrthodontic bonding and debonding procedures involve risk of damaging the enamel surface and changing its original morphology. The rough surface inhibits proper cleaning, invites plaque deposition, bacterial retention, and stain formation thus dampening the esthetic appearance of the teeth. Restoring the enamel to its original morphology is a challenge. Researches on better adhesive removal methods which can effectively remove the residual resin and restore it best to its original form are continuing till date. No study has compared four contemporary finishing systems for their efficiency on a single platform.AimThe objective of this study is to evaluate and compare enamel surface roughness after debonding using four different finishing and polishing systems.Material and methodsAdhesive resin was removed from the buccal surface of 88 premolars after debonding with 4 groups. It included 22 teeth per group: group 1—One gloss system; group 2—Enhance finishing and polishing system; group 3—fiber reinforced stainbuster bur; and group 4—Soflex discs with wheels. Roughness was measured quantitatively and qualitatively with the help of surface roughness tester and scanning electron Microscope (SEM) respectively.ResultsNo significant difference was found in baseline roughness in four groups. Highest post-polishing roughness was observed in Soflex group (4.62 μm) followed by One gloss system (3.36 μm), Enhance system (3.17 μm), and stainbuster bur (1.99 μm) (p value < 0.01).ConclusionStainbuster bur created the smoothest enamel surface that was close to the natural enamel followed by Enhance system, One gloss system, and Soflex disc and wheels.