Research Article
Quantification of the Dental Morphology of Orangutans
Table 4
Posterior teeth root canal measurements.
(a) |
| | | Bornean orangutan | Sumatran orangutan | | | Root canal length | Root canal width | Root canal length | Root canal width | | | MB | DB | P | MB | DB | P | MB | DB | P | MB | DB | P | co | m | ap | co | m | ap | co | m | ap | co | m | ap | co | m | ap | co | m | ap |
| Max. PM1 | R | 17 | 14 | 19 | 1.1 | 0.5 | 0.4 | 0.6 | 0.4 | 0.3 | 1 | 1 | 0.5 | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | L | 18 | 14 | 19 | 0.9 | 0.5 | 0.3 | 0.8 | 0.7 | 0.6 | 3 | 0.7 | 0.9 | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | Max. PM2 | R | 14 | 13 | 15 | 1 | 0.5 | 0.3 | 0.5 | 0.4 | 0.3 | 1.6 | 1 | 0.8 | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | L | 16 | 14 | 18 | 1.2 | 0.5 | 0.6 | 0.4 | 0.4 | 0.4 | 2.3 | 0.7 | 0.9 | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | Max. M1 | R | 14 | 15 | 16 | 1.1 | 0.4 | 0.6 | 0.7 | 0.4 | 0.5 | 2 | 0.7 | 0.7 | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | cal. | L | 15 | 15 | 17 | 0.9 | 0.5 | 0.2 | 0.5 | 0.3 | 0.1 | 2 | 0.7 | 0.7 | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | Max. M2 | R | 12 | 12 | 14 | 1 | 0.5 | 0.4 | 0.5 | 0.4 | 0.4 | 2.1 | 0.8 | 0.8 | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | L | 11 | 12 | 14 | 1 | 0.5 | 0.4 | 0.4 | 0.5 | 0.3 | 2.4 | 0.9 | 1.2 | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | Max. M3 | R | 12 | 11 | 12 | 1.1 | 0.6 | 0.6 | 0.3 | 0.3 | 0.2 | 1.6 | 0.6 | 0.6 | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | L | 12 | 11 | 11 | 0.6 | 0.7 | 0.3 | 0.2 | 0.5 | 0.3 | 1.8 | 1.2 | 0.6 | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms | ms |
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(b) |
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| | Bornean orangutan | Sumatran orangutan | | | Root canal length | Root canal width | Root canal length | Root canal width | | | M | D | M | D | M | D | M | D | | | co | m | ap | co | m | ap | co | m | ap | co | m | ap |
| Mand. PM1 | R | 21 | 19 | 1.3 | 0.7 | 0.6 | 0.7 | 0.6 | 0.4 | cal. | 19 | cal. | cal. | cal. | 1.5 | 0.5 | 0.6 | L | 21 | 19 | 0.7 | 0.4 | 0.6 | 0.8 | 0.6 | 0.4 | 25 | 21 | 1.8 | 1.1 | 0.6 | 2 | 0.7 | 0.7 | Mand. PM2 | R | 19 | 19 | 1.1 | 0.6 | 0.5 | 1.1 | 0.8 | 0.3 | ms | ms | ms | ms | ms | ms | ms | ms | L | 19 | 18 | 0.9 | 0.3 | 0.3 | 0.8 | 0.3 | 0.2 | 18 | ca | 1.5 | 0.3 | 0.2 | cal. | cal. | cal. | Mand. M1 | R | 19 | 18 | 1.9 | 0.4 | 0.5 | 1.8 | 0.7 | 0.6 | 19 | 19 | 1.5 | 0.6 | 0.5 | 1.3 | 0.4 | 0.5 | L | 20 | 18 | 1.8 | 0.5 | 0.4 | 1.5 | 0.5 | 0.5 | ms | ms | ms | ms | ms | ms | ms | ms | Mand. M2 | R | 16 | 15 | 2.1 | 0.7 | 0.6 | 2.5 | 1 | 0.6 | ms | ms | ms | ms | ms | ms | ms | ms | L | 15 | 14 | 1.5 | 0.4 | 0.3 | 1.6 | 0.7 | 0.6 | ms | ms | ms | ms | ms | ms | ms | ms | Mand. M3 | R | 13 | 12 | 1.7 | 1.2 | 0.7 | 1 | 1.2 | 0.9 | ms | ms | ms | ms | ms | ms | ms | ms | L | 12 | 14 | 1.8 | 0.8 | 0.5 | 0.9 | 0.7 | 0.7 | ms | ms | ms | ms | ms | ms | ms | ms |
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R: right; L: left; MB: mesiobuccal root; DB: distobuccal root; P: palatal root; M: mesial root; D: distal root; co: canal orifice; m: midpoint between orifice and apex; ap: apex; ms: missing tooth; cal.: partially calcified root canal; cal.: fully calcified root canal.
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