J Korean Acad Oral Health.  2013 Mar;37(1):9-15. 10.11149/jkaoh.2013.37.1.9.

Abrasion of resin infiltrated enamel by tooth brushing

• Son JH
• Lim DS
• Ma DS
• Park DY

• KMID: 2190842
• DOI: http://doi.org/10.11149/jkaoh.2013.37.1.9

Abstract

OBJECTIVES
The purpose of this study was to evaluate abrasion of Icon(R) infiltrated, sound bovine enamel by using confocal laser scanning microscopy (CLSM) after toothbrush abrasion tests.
METHODS
Sound bovine enamel specimens whose Vickers Hardness Number ranged from 280 to 320 were prepared. To measure abrasion, specimens were allocated to groups on the basis of tooth brushing stroke frequencies. Tooth brushing stroke frequencies were categorized into 5 groups: 1,800, 5,400, 10,800, 21,600 and 43,200 strokes. Both infiltration depth of Icon(R) and the abrasion depth were measured by CLSM.
RESULTS
Mean infiltration depth of Icon(R) for sound bovine enamel was 98.6 microm. There was no statistically significant difference in enamel abrasion depth between groups with 5,400 strokes and 10,800 strokes, but the abrasion depth increased with further increase in tooth brushing stroke frequencies (P<0.001). The mean abrasion depth of resin infiltrated bovine enamel after 43,200 tooth brushing strokes was 17.45 microm.
CONCLUSIONS
The magnitude of abrasion after 43,200 tooth brushing strokes, which corresponds to brushing 3 times a day for 4 years, was less than 20 microm. This result suggests that abrasion by tooth brushing would not be a clinical problem for resin infiltrated enamel.

Keyword

Dental caries; Dental sealant; Enamel wear; Infiltration; Toothbrush abrasion

MeSH Terms

Dental Caries
Dental Enamel
Hardness
Microscopy, Confocal
Stroke
Tooth

Figure

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  Fig. 1

Reference