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| Variant | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| I | II | III | IV | V | VI | VII | VIII | N/A a | |
| N/A, not available. a Morphology not included in any variant of Zhang et al. 20 | |||||||||
| Maxillary first molars, n (%) | 121 (36.78) | 203 (61.70) | 1 (0.30) | 0 | 1 (0.30) | 0 | 0 | 0 | 2 (0.60) |
| Maxillary second molars, n (%) | 194 (60.06) | 96 (29.72) | 21 (6.50) | 3 (0.93) | 1 (0.31) | 7 (2.17) | 0 | 0 | 1 (0.31) |
