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Number and distribution of teeth according to the degree root angulations
| Tooth | Number of teeth | Degree of root angulation | Chi-square (df) | P value | |||
|---|---|---|---|---|---|---|---|
| None | Moderate (10-20) | Sever >20 | |||||
| First premolar | 255 | 183 (71.7%) | 34 (13.3%) | 3.057(2) | 0.267 | ||
| Second premolar | 221 | 173 (78.3%) | 19 (8.6%) | 29 (13.1%) | |||
| Total | 476 | 356 (74.8%) | 53 (11.1%) | 67 (14.1%) | |||
