Classification | Right 1st PM | Right 2nd PM | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AGE | p-value | AGE | p-value | |||||||||||
10–20 | 21–30 | 31–40 | 41–50 | 51–60 | 60+ |  | 10–20 | 21–30 | 31–40 | 41–50 | 51–60 | 60+ |  | |
1 PM 1 | 16 | 67 | 80 | 42 | 33 | 26 | 0.001* | 24 | 84 | 85 | 39 | 27 | 24 | 0.001* |
1 PM 1–2−1 | 2 | 5 | 6 | 2 | 0 | 1 |  | 0 | 0 | 1 | 1 | 0 | 0 |  |
1 PM 1–2 | 4 | 5 | 4 | 1 | 0 | 2 |  | 1 | 1 | 0 | 0 | 0 | 1 |  |
1 PM 1–2−1–2 | 0 | 0 | 1 | 0 | 0 | 1 |  |  |  |  |  |  |  |  |
2 PM 1 B 1Â L 1 | 1 | 8 | 5 | 5 | 1 | 1 | Â | 0 | 0 | 1 | 0 | 0 | 0 | Â |
2 PM B 1Â L 1 | 1 | 2 | 0 | 0 | 0 | 0 | Â | Â | Â | Â | Â | Â | Â | Â |
3 PMMB 1 DB 1Â L 1 | Â | Â | Â | Â | Â | Â | Â | 0 | 2 | 1 | 0 | 0 | 0 | Â |
 C-Shaped canals |  |  |  |  |  |  |  |  | 1 | 1 |  |  |  |  |
Total | 24 | 87 | 96 | 50 | 34 | 31 | Â | 25 | 88 | 89 | 40 | 27 | 25 | Â |