Impact of toothbrush head configuration and dentifrice abrasivity on non-carious cervical lesions in-vitro.

Autor: Alzahrani L; Department of Cariology and Operative Dentistry, Indiana University School of Dentistry, Oral Health Research Institute, 415 Lansing Street, Indianapolis, IN 46202, USA; Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam 31441, Saudi Arabia., Denucci GC; Department of Cariology and Operative Dentistry, Indiana University School of Dentistry, Oral Health Research Institute, 415 Lansing Street, Indianapolis, IN 46202, USA., Lippert F; Department of Cariology and Operative Dentistry, Indiana University School of Dentistry, Oral Health Research Institute, 415 Lansing Street, Indianapolis, IN 46202, USA., Dehailan LA; Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam 31441, Saudi Arabia., Bhamidipalli SS; Department of Biostatistics and Health Data Science, Indiana University School of Medicine, Indianapolis, USA., Hara AT; Department of Cariology and Operative Dentistry, Indiana University School of Dentistry, Oral Health Research Institute, 415 Lansing Street, Indianapolis, IN 46202, USA. Electronic address: ahara@iu.edu.
Jazyk: angličtina
Zdroj: Journal of dentistry [J Dent] 2024 Jan; Vol. 140, pp. 104798. Date of Electronic Publication: 2023 Dec 02.
DOI: 10.1016/j.jdent.2023.104798
Abstrakt: Objective: To investigate the effect of toothbrush head configuration and dentifrice slurry abrasivity on the development of simulated non-carious cervical lesions (NCCLs) in vitro.
Methods: Extracted premolars were randomly allocated into 15 groups (n = 16) generated by the association between toothbrush head configuration (flat-trimmed, rippled, cross-angled/multilevel/rubbers added, cross-angled/multilevel/flex head, feathered) and dentifrice slurry abrasivity (low/medium/high). Teeth were mounted on acrylic blocks and had their roots partially covered with acrylic resin, leaving 2-mm root surfaces exposed. Toothbrushing was performed for 35,000 and 65,000 double-strokes. Specimens were analyzed using non-contact profilometry for dental volume loss (mm 3 ) and lesion morphology. Data was analyzed using ANOVA with pairwise comparisons and Kruskal-Wallis tests.
Results: The two-way interaction between toothbrush head configuration and slurry abrasivity was significant (p = 0.02). At 35,000 strokes, the flat-trimmed and cross-angled/multilevel/rubbers added toothbrushes caused the highest loss, when associated to the high-abrasive slurry (p<0.05); whereas cross-angled/multilevel/flex head showed the least loss, when associated to the low-abrasive (p<0.05). At 65,000, more dental loss was observed for all toothbrushes when associated to the high-abrasive slurry, with flat-trimmed causing the highest loss (p < 0.05). Lower dental loss rates were observed for cross-angled/multilevel/flex head associated to the low-abrasive slurry when compared to the other toothbrushes (p < 0.05), except to feathered (p = 0.14) and rippled (p = 0.08). Flat lesions (mean internal angle ± standard-deviation: 146.2°± 16.8) were mainly associated with low-abrasive slurry, while wedge-shaped lesions (85.8°± 18.8) were more frequent with medium- and high-abrasive slurries.
Conclusion: The development, progression and morphology of simulated NCCLs were modulated by both toothbrush head configuration and dentifrice abrasivity.
Clinical Significance: Dental professionals should consider both the type of toothbrush and dentifrice abrasivity in the management plan of patients at risk of developing NCCLs.
Competing Interests: Declaration of Competing Interest We wish to confirm that there are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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