Tooth Surface Loss and Associated Risk Factors in Northern Saudi Arabia

Table 3

Distribution of tooth wear severity among the study population.

Tooth wear severity	Frequency (%)	Gender difference (chi-square test)
Grade 1	76 (19%)	P = 0.41
Grade 2	308 (77%)	P = 0.61
Grade 3	12 (3%)	P = 0.001
Grade 4	4 (1%)	P = 0.001