Comparison of feldspathic veneer surface treatments on colour stability after debonding of orthodontic brackets: An in vitro study
Year: 2025
Type: article
Abstract: OBJECTIVES: To analyse the colour stability of feldspathic porcelain veneers treated with different surface preparation methods after bonding and debonding orthodontic brackets. MATERIAL AND METHODS: Twenty-five feldspathic porcelain veneers samples were divided into groups according to surface treatment procedures: (S) glaze-layer retained; (SHF) hydrofluoric acid etch; (SOXA) sandblasting; (SB) diamond burs; (C) control. Specimens were primed using silane and brackets were bonded. After removal of brackets, colour stability (NBS score National Bureau of Standards Score) was determined following coffee staining for 21 days. Group comparisons at each time point (T0 and T1) were performed using one-way ANOVA, followed by Tukey's HSD test for pairwise comparisons when a significant difference was detected. To evaluate the effect of time within each surface treatment group (T0 vs. T1), a paired t-test was performed. RESULTS: No significant interclass difference was identified between overall colour stability for the four test groups (S, SHF, SOXA and SB). All test groups showed a statistically significant increase in colour change compared to the control. CONCLUSIONS: Surface treatment resulted in a significant decrease in colour stability with no statistical difference between treatments. Regardless of surface preparation method, bonding and debonding of orthodontic bracket results in decreased colour stability of feldspathic porcelain veneers.
Source: International Orthodontics
Language: English
Subfield: Orthodontics
Field: Dentistry
Domain: Health Sciences
Open Access status: hybrid
Estimated APC paid: $2,570
OpenAlex ID: W4409870310