The effect of toothbrush abrasion force on dentine hypersensitivity in-vitro

Sehmi, H. and Olley, R.C. ORCID: https://orcid.org/0000-0003-1257-6835 2015. The effect of toothbrush abrasion force on dentine hypersensitivity in-vitro. Journal of Dentistry 43 (12) , pp. 1442-1447. 10.1016/j.jdent.2015.10.014

Full text not available from this repository.

Abstract

Objectives This study investigated the effect of tooth brushing force on changes in dentine tubule patency in an erosion-toothbrush abrasion model. Methods 60 dentine samples prepared with an artificial smear layer and divided randomly into control (no toothbrush), 100 g, 200 g or 400 g toothbrush groups. They were immersed in 3:1 artificial saliva/NaF 1450 ppm and either brushed (p35 soft tooth brush; 120 strokes) or not brushed. Then samples were subjected to agitated acid challenge (0.3% citric acid pH2.6 for 2 min). Finally, samples were re-brushed. Calibrated software calculated patent dentine tubules that cause DH in confocal microscopy images taken of samples at each stage. Results At baseline, mean patent tubules in all samples were 188 (SD54) with no significant inter-group differences. Following first brushing, mean patent tubules decreased using 100 g to 150 (SD32) (p < 0.01) and increased using 400 g to 215 (SD45) (p = 0.02). Following acid challenge, patent tubules increased to 218 (SD40) in all samples (p < 0.01) with no significant inter-group differences. Following further brushing, mean patent tubules decreased using 100 g to 175 (SD72) (p < 0.01), but increased with 400 g to 232 (SD52). Conclusions At higher brushing forces (400 g), more tubules were exposed. At lower brushing forces (100 g), tubule patency decreased even post-acidic challenge. Clinical significance It is often recommended to our patients with DH to brush using lighter brushing forces but our understanding of this force on dentine tubule patency is unknown. The management of DH requires lighter brushing forces to reduce the numbers of patent dentine tubules.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Dentistry
Publisher:	Elsevier
ISSN:	0300-5712
Date of Acceptance:	16 October 2015
Last Modified:	07 Nov 2022 10:31
URI:	https://orca.cardiff.ac.uk/id/eprint/132541

Citation Data

Cited 18 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item