Enhanced tooth bleaching with a hydrogen peroxide/titanium dioxide gel
Year: 2024
Type: article
Abstract: This study aimed to explore the effects of the titanium dioxide (TiO 2 ) concentration and particle size in hydrogen peroxide (HP) on tooth bleaching effectiveness and enamel surface properties. TiO 2 at different concentrations and particle sizes was incorporated into 40% HP gel to form an HP/TiO 2 gel. The specimens were randomly divided into 8 groups: C1P20: HP + 1% TiO 2 (20 nm); C3P20: HP + 3% TiO 2 (20 nm); C5P20: HP + 5% TiO 2 (20 nm); C1P100: HP + 1% TiO 2 (100 nm); C3P100: HP + 3% TiO 2 (100 nm); C5P100: HP + 5% TiO 2 (100 nm); C0: HP with LED; and C0-woL: HP without LED. Bleaching was conducted over 2 sessions, each lasting 40 min with a 7-day interval. The color differences (ΔE 00 ), whiteness index for dentistry (WI D ), surface microhardness, roughness, microstructure, and composition were assessed. The concentration and particle size of TiO 2 significantly affected ΔE 00 and ΔWI D values, with the C1P100 group showing the greatest ΔE 00 values and C1P100, C3P100, and C5P100 groups showing the greatest ΔWI D values ( p < 0.05). No significant changes were observed in surface microhardness, roughness, microstructure or composition ( p > 0.05). Incorporating 1% TiO 2 with a particle size of 100 nm into HP constitutes an effective bleaching strategy to achieve desirable outcomes.
Source: BMC Oral Health
Institutions: Fujian Medical University, Nagasaki University
Language: English
Topic: Dental Erosion and Treatment
Subfield: Orthodontics
Field: Dentistry
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $3,090
Funder: Fujian Medical University
OpenAlex ID: W4401443077