Table 1.

Distribution of the patients by gender, age at enrollment, presence of smoking habit and bruxism

	N°	p*
Gender
Males	35 (38.9%)	0.133
Females	55 (61.1%)
Age
< 35 years	8 (8.9%)	0.0003
35–55 years	42 (46.7%)
> 55 years	40 (44.4%)
Smoke
Yes	15 (16.7%)	<  0.0001
No	75 (83.3%)
Bruxism
Yes	22 (24.4%)	0.0003
No	68 (75.6%)
Overall	90	–

^*Chi-square test