Parameter 1st Primary Rugae 2nd Primary Rugae 3rd Primary Rugae
  Right Left Right Left Right Left
Pattern(P) 1.00 0.222 0.875 0.705 0.370 0.888
Orientation(Or) 0.488 0.276 0.819 0.592 0.660 0.897
Strength(St) 0.941 0.824 0.541 0.541 0.330 0.394
Table 3: Kruskal Wallis Test Statistics for association for Rugae Pattern (P), Orientation (Or) and Strength (St) among the four malocclusion groups.