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Evolution of wear on enamel caused by tooth brushing with abrasive toothpaste slurries

Evolution of wear on enamel caused by tooth brushing with abrasive toothpaste slurries
Evolution of wear on enamel caused by tooth brushing with abrasive toothpaste slurries
Maintaining good oral hygiene is vital to a healthy body and aesthetically attractive smile. Regular tooth brushing prevents cavities, tooth decay and gum disease which if left, can lead to serious health problems. However, cleaning your teeth comes with a drawback. Toothpastes contain abrasive particles, which in combination with the toothbrush, have the potential to wear tooth enamel. To optimise the cleaning efficiency of teeth and minimise the enamel wear it is essential to understand the science behind the tooth/toothpaste/toothbrush interface. An integrated approach is employed in this study to investigate the tribology of brushing, examining the friction and wear evolution. A reciprocating tribometer was modified to enable a toothbrush head to reciprocate against a bovine enamel disk to simulate the tooth brushing action, with a constant feed of either an abrasive free or a silica or alumina containing toothpaste slurry to the contact. The evolution of the friction with time during the brushing simulation as well as the changes in the enamel surface roughness were determined. The alumina slurry resulted in higher friction, increased wear depth and an increased roughening of the enamel surface compared to the silica slurries, with all abrasives causing 2 body grooving to the enamel surface. The spherical silica provided both the lowest friction and material loss of the slurries tested. The abrasive free slurry caused no wear or surface roughening but exhibited the highest friction during brushing.
ENAMEL, WEAR, friction, abrasive particles, toothbrush
0043-1648
Baig, M.F.
e618bead-e673-4726-a3ad-ee307203a9a0
Cook, Richard
06f8322d-81be-4f82-9326-19e55541c78f
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73
Baig, M.F.
e618bead-e673-4726-a3ad-ee307203a9a0
Cook, Richard
06f8322d-81be-4f82-9326-19e55541c78f
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73

Baig, M.F., Cook, Richard and Wood, Robert (2020) Evolution of wear on enamel caused by tooth brushing with abrasive toothpaste slurries. Wear. (doi:10.1016/j.wear.2020.203580).

Record type: Article

Abstract

Maintaining good oral hygiene is vital to a healthy body and aesthetically attractive smile. Regular tooth brushing prevents cavities, tooth decay and gum disease which if left, can lead to serious health problems. However, cleaning your teeth comes with a drawback. Toothpastes contain abrasive particles, which in combination with the toothbrush, have the potential to wear tooth enamel. To optimise the cleaning efficiency of teeth and minimise the enamel wear it is essential to understand the science behind the tooth/toothpaste/toothbrush interface. An integrated approach is employed in this study to investigate the tribology of brushing, examining the friction and wear evolution. A reciprocating tribometer was modified to enable a toothbrush head to reciprocate against a bovine enamel disk to simulate the tooth brushing action, with a constant feed of either an abrasive free or a silica or alumina containing toothpaste slurry to the contact. The evolution of the friction with time during the brushing simulation as well as the changes in the enamel surface roughness were determined. The alumina slurry resulted in higher friction, increased wear depth and an increased roughening of the enamel surface compared to the silica slurries, with all abrasives causing 2 body grooving to the enamel surface. The spherical silica provided both the lowest friction and material loss of the slurries tested. The abrasive free slurry caused no wear or surface roughening but exhibited the highest friction during brushing.

Text
TE77 WOM paper_Final - Accepted Manuscript
Restricted to Repository staff only until 5 December 2022.
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More information

Accepted/In Press date: 5 December 2020
e-pub ahead of print date: 11 December 2020
Keywords: ENAMEL, WEAR, friction, abrasive particles, toothbrush

Identifiers

Local EPrints ID: 445684
URI: http://eprints.soton.ac.uk/id/eprint/445684
ISSN: 0043-1648
PURE UUID: 4c1d247d-59ee-4b1e-897f-d34c7cec7f40
ORCID for Robert Wood: ORCID iD orcid.org/0000-0003-0681-9239

Catalogue record

Date deposited: 06 Jan 2021 17:36
Last modified: 18 Feb 2021 16:43

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