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Category:Cities Dixon A, Severe facial fractures and right orbital encephalocele. Case study, Radiopaedia.org (Accessed on 04 Jan 2023) https://doi.org/10.53347/rID-32327

DOI:

https://doi.org/10.53347/rID-32327

Permalink:

https://radiopaedia.org/cases/32327

rID:

32327

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The Bonwill triangle is a triangle formed by the contact point of the mandibular central incisors and the right and left mandibular condyles.^[1]^[2]

The distance between those points is equal in most humans and amounts on average to about 10 cm.^[2] The triangle is therefore an equilateral triangle in those cases. William Gibson Arlington Bonwill (1833–1899) was the first to describe this.^[2]

Two variants of the Bonwill triangle have been discribed that differ in the exact location of the points on the condyles. In one the points are located on the articulating surfaces of the condyles whilst in the other they were located centrally within the heads of the mandible.^[1]

Application

Fixed articulators (in contrast to fully- and semi-adjustable articulators) are a type of articulator that does not allow for adjustments to emulate the specific movements of the jaw of an indidivudal. The movements reflect avarage movements of the jaw. In order to achieve this the construction and correct applicaiton of these articulators utilizes the described relationship of the Bonwill triangle.^[3]

References

^ ^a ^b Ohm, E.; Silness, J. (1982). "The size of the Balkwill angle and the height of the Bonwill triangle". Journal of Oral Rehabilitation. 9 (4): 301–306. doi:10.1111/j.1365-2842.1982.tb01019.x. ISSN 0305-182X.
^ ^a ^b ^c Wenz, Hans-Jürgen; Hellwig, Elmar (2018-10-04). "Zahnärztliche Propädeutik". Textbook (in German). Deutscher Zahnärzte Verlag: 65. doi:10.47420/9783769136517. ISBN 978-3-7691-3645-6.
^ Wenz, Hans-Jürgen; Hellwig, Elmar (2018). Wenz, Hans-Jürgen; Hellwig, Elmar (eds.). Zahnärztliche Propädeutik: Einführung in die Zahnheilkunde 14. A. (in German). Deutscher Zahnärzte Verlag. p. 94. doi:10.47420/9783769136517. ISBN 978-3-7691-3651-7.

[:0-1] Ohm, E.; Silness, J. (1982). "The size of the Balkwill angle and the height of the Bonwill triangle". Journal of Oral Rehabilitation. 9 (4): 301–306. doi:10.1111/j.1365-2842.1982.tb01019.x. ISSN 0305-182X.

[:1-2] Wenz, Hans-Jürgen; Hellwig, Elmar (2018-10-04). "Zahnärztliche Propädeutik". Textbook (in German). Deutscher Zahnärzte Verlag: 65. doi:10.47420/9783769136517. ISBN 978-3-7691-3645-6.

[3] Wenz, Hans-Jürgen; Hellwig, Elmar (2018). Wenz, Hans-Jürgen; Hellwig, Elmar (eds.). Zahnärztliche Propädeutik: Einführung in die Zahnheilkunde 14. A. (in German). Deutscher Zahnärzte Verlag. p. 94. doi:10.47420/9783769136517. ISBN 978-3-7691-3651-7.

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