From: Root dentine thickness of danger zone in mesial roots of mandibular first molars
Groups | Men | Women | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
1 mm | 2 mm | 3 mm | 4 mm | 5 mm | 1 mm | 2 mm | 3 mm | 4 mm | 5 mm | |
18–30 y | 0.95 ± 0.15 | 0.80 ± 0.14 | 0.78 ± 0.13 | 0.80 ± 0.14 | 0.78 ± 0.14 | 0.89 ± 0.14 | 0.76 ± 0.14 | 0.74 ± 0.13 | 0.76 ± 0.14 | 0.76 ± 0.15 |
31–50 y | 0.96 ± 0.17 | 0.82 ± 0.15 | 0.80 ± 0.14 | 0.79 ± 0.14 | 0.81 ± 0.13 | 0.93 ± 0.16 | 0.79 ± 0.14 | 0.79 ± 0.13 | 0.80 ± 0.14 | 0.80 ± 0.14 |
≥51 y | 1.01 ± 0.18 | 0.85 ± 0.15 | 0.82 ± 0.15 | 0.83 ± 0.15 | 0.83 ± 0.15 | 0.97 ± 0.16 | 0.84 ± 0.14 | 0.81 ± 0.14 | 0.81 ± 0.15 | 0.82 ± 0.14 |
Total | 0.98 ± 0.17 | 0.83 ± 0.15 | 0.80 ± 0.14 | 0.81 ± 0.14 | 0.81 ± 0.14 | 0.93 ± 0.16 | 0.79 ± 0.14 | 0.78 ± 0.14 | 0.79 ± 0.14 | 0.79 ± 0.13 |