The use of the ala-tragus line for occlusal plane determination in complete dentures

The Ala-Tragus Line as a Guide for Orientation of the Occlusal Plane in Complete Dentures

“…Abrahams and Carey found the angle between the natural OP and ATL1 to be 9.66 degrees ± 4.29. 22 While Karkazis and Polyzois reported 5.25 degrees ± 3.35 for the same angle, this study has shown 6.12 degrees ± 3.62. 14 In earlier reports, values of the angle between the natural OP and ATL2 were found to be 2.75 degrees ± 3.64 and 2.88 degrees ± 3.54.…”

The Ala-Tragus Line as a Guide for Orientation of the Occlusal Plane in Complete Dentures

“…Abrahams and Carey found the angle between the natural OP and ATL1 to be 9.66 degrees ± 4.29. 22 While Karkazis and Polyzois reported 5.25 degrees ± 3.35 for the same angle, this study has shown 6.12 degrees ± 3.62. 14 In earlier reports, values of the angle between the natural OP and ATL2 were found to be 2.75 degrees ± 3.64 and 2.88 degrees ± 3.54.…”

The Position of the Occlusal Plane in Natural and Artificial Dentitions as Related to Other Craniofacial Planes

“…On the other hand, an investigation 30 has been carried out that compared the occlusal plane orientation before extraction of natural teeth and when artificial teeth were arranged so that the AOP paralleled the ala‐tragus line. The results indicated that the natural occlusal plane was higher posteriorly than the AOP, which disagrees with what had been shown by Wylie, 39 Abrahams and Carey, 37 and Ow et al 27 One can see the controversy regarding the position of the natural occlusal plane in relation to the AOP (determined by the use of the ala‐tragus line). Moreover, in actual practice, the determination of the AOP by the ala‐tragus line is taken only as an approximation and as the mean of the angle formed between the two planes.…”

A study of the occlusal plane orientation in complete denture construction

“…The angle formed by the two planes had a mean of 2-88°. Abrahams & Carey (1979) reported 9-66° for the same angle. The discrepancy of this value (9-66°) from our results (2-88°) is probably due to the different determination of the posterior landmark of the ATL or Camper's line (Karkazis, Polyzois & Zissis, 1986).…”

The Ala-Tragus Line as a Guide for Orientation of the Occlusal Plane in Complete Dentures

“…Abrahams and Carey found the angle between the natural OP and ATL1 to be 9.66 degrees ± 4.29. 22 While Karkazis and Polyzois reported 5.25 degrees ± 3.35 for the same angle, this study has shown 6.12 degrees ± 3.62. 14 In earlier reports, values of the angle between the natural OP and ATL2 were found to be 2.75 degrees ± 3.64 and 2.88 degrees ± 3.54.…”

The Position of the Occlusal Plane in Natural and Artificial Dentitions as Related to Other Craniofacial Planes

“…On the other hand, an investigation 30 has been carried out that compared the occlusal plane orientation before extraction of natural teeth and when artificial teeth were arranged so that the AOP paralleled the ala‐tragus line. The results indicated that the natural occlusal plane was higher posteriorly than the AOP, which disagrees with what had been shown by Wylie, 39 Abrahams and Carey, 37 and Ow et al 27 One can see the controversy regarding the position of the natural occlusal plane in relation to the AOP (determined by the use of the ala‐tragus line). Moreover, in actual practice, the determination of the AOP by the ala‐tragus line is taken only as an approximation and as the mean of the angle formed between the two planes.…”

A study of the occlusal plane orientation in complete denture construction

“…The angle formed by the two planes had a mean of 2-88°. Abrahams & Carey (1979) reported 9-66° for the same angle. The discrepancy of this value (9-66°) from our results (2-88°) is probably due to the different determination of the posterior landmark of the ATL or Camper's line (Karkazis, Polyzois & Zissis, 1986).…”

The Ala-Tragus Line as a Guide for Orientation of the Occlusal Plane in Complete Dentures

“…Abrahams and Carey found the angle between the natural OP and ATL1 to be 9.66 degrees ± 4.29. 22 While Karkazis and Polyzois reported 5.25 degrees ± 3.35 for the same angle, this study has shown 6.12 degrees ± 3.62. 14 In earlier reports, values of the angle between the natural OP and ATL2 were found to be 2.75 degrees ± 3.64 and 2.88 degrees ± 3.54.…”

The Position of the Occlusal Plane in Natural and Artificial Dentitions as Related to Other Craniofacial Planes

“…On the other hand, an investigation 30 has been carried out that compared the occlusal plane orientation before extraction of natural teeth and when artificial teeth were arranged so that the AOP paralleled the ala‐tragus line. The results indicated that the natural occlusal plane was higher posteriorly than the AOP, which disagrees with what had been shown by Wylie, 39 Abrahams and Carey, 37 and Ow et al 27 One can see the controversy regarding the position of the natural occlusal plane in relation to the AOP (determined by the use of the ala‐tragus line). Moreover, in actual practice, the determination of the AOP by the ala‐tragus line is taken only as an approximation and as the mean of the angle formed between the two planes.…”

A study of the occlusal plane orientation in complete denture construction

“…The angle formed by the two planes had a mean of 2-88°. Abrahams & Carey (1979) reported 9-66° for the same angle. The discrepancy of this value (9-66°) from our results (2-88°) is probably due to the different determination of the posterior landmark of the ATL or Camper's line (Karkazis, Polyzois & Zissis, 1986).…”