The prevalence and risk indicators of tooth wear in 12- and 15-year-old adolescents in Central China

BMC Oral Health

Table 7 The relationship between tooth wear (BEWE2-3) and life style factors

	N	Tooth wear		P
	N	BEWE2-3	%
Frequency of swimming in summer				<0.001
Never/rarely	222	144	64.9
1–2 times weekly	282	152	53.9
3–4 times weekly	156	70	44.9
> 5 times weekly	60	23	38.3
Clenching teeth automatically				0.217
Never	474	250	52.7
Rarely	163	87	53.4
Sometimes	60	35	58.3
Often	23	17	73.9
Sleep bruxiam				0.332
Never	589	315	53.5
Rarely	82	47	57.3
Sometimes	33	21	63.6
Often	16	6	37.5
Chewing habits				<0.001
Both	469	230	49.0
Left	85	53	62.4
Right	119	81	68.1

ISSN: 1472-6831