Table 4: The correlation between tooth wear severity and tooth wear-associated factors among the study population.

Factors correlated to tooth wear severity Statistical method P value Age Pearson 0.001 Gender Pearson 0.2 Systemic disease Kruskal-Wallis 0.011 Number of remaining teeth Pearson 0.000 Acidic diet and drinks Pearson 0.000 Bruxism and parafunction Mann-Whitney 0.000 Biting objects Mann-Whitney 0.001 Facial pain or tenderness Mann-Whitney 0.021 TMJ problems Mann-Whitney 0.3 Sour taste in the mouth Mann-Whitney 0.021 Occupational risk Mann-Whitney 0.2 Exposure to dust Mann-Whitney 0.04 Unilateral chewing Mann-Whitney 0.000 Using dental abrasives Pearson 0.001 Using mouth rinse Pearson 0.2 Intake of acidic medications Mann-Whitney 0.3 Drinking alcohol Pearson 0.2 Brushing:  Frequency Pearson 0.04  Technique Kruskal-Wallis 0.033