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Comparison of Enamel Roughness and Calcium Release Between Manual and Mechanical Stripping With and Without Polishing After Demineralization

Summary: Can polishing after enamel stripping reduce roughness? A study suggests polishing greatly lowers enamel roughness after mechanical stripping. Is this the best method for orthodontics? #Orthodontics #DentalResearch

Asgarian N ; Ahmadi E ; Mahounak FS ; Kharrazi Fard MJ ; Mohammad Sadegh AA
Authors

Source: Frontiers in Dentistry Published:2026

Abstract

Objectives: Proximal enamel stripping is one way to create space in orthodontic treatments that leaves grooves on the enamel surface and predispose teeth to caries. The aim of this study was to compare the two common stripping systems and the effect of polishing after the stripping process on the level of surface roughness. Materials and Methods: Twenty-five extracted teeth were randomly divided into five groups:untreated control (C), mechanical stripping (Sn), mechanical stripping and polishing (Sp), manual stripping (Dn), manual stripping and polishing (Dp). Mechanical stripping used a SWISS denta care Quality oscillating system, manual stripping used Dentaurum hand tapes, and polishing used Soflex disks. Teeth underwent pH-cycling and the amount of released calcium was measured by spectrometry. Samples were examined under atomic force microscopy (AFM) before and after demineralization. Baseline and post-demineralization surface roughness values (Ra, Rq, Rz) were calculated. Finally, scanning electron microscopy (SEM) images were obtained from two samples of each group. data analysis was done by One-way ANOVA. P-value<0.05 was considered statistically significant. Results: There was no significant difference between the stripping methods in terms of surface roughness parameters, but there was a significant difference between the polished and unpolished groups (P<0.05). Calcium release was significantly lower in the Sp group compared to the other groups (P<0.05). In SEM images, the least amount enamel damage was related to the Sp group. Conclusion: Unlike stripping systems, polishing is considerably useful in decreasing enamel roughness. Totally, mechanical stripping and polishing has shown the best consequences on enamel structure. Copyright © 2026 The Authors. Published by Tehran University of Medical Sciences.
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