J Korean Radiol Soc.  1981 Sep;17(2):260-263. 10.3348/jkrs.1981.17.2.260.

Radiographic normal range of condylar movement of mandible

• Choi BI
• Lee JM
• Kim MJ

• KMID: 2463402
• DOI: http://doi.org/10.3348/jkrs.1981.17.2.260

Abstract

It is the purpose of this article to determine various normal anatomic measurements of temporomandibular joint and normal range of condylar movement using relatively simple X-ray equipment and radiographic technique in consideration of popular clinical application. Author's cases condisted of 100 clinically normal adult males and temporomandibular joint radiographs of 3 serial position so condylar head were taken by transcranial obliquelateral pojection in each case. The serial positions are centric occlusion, 1 inch opening and maximal opening position. The results were as follows; 1. In cetric occlusion, the length between the condylar head and glenoidfossa was 2.23±0.58mm in anterior part, 3.55±0.80mm in upper part and 2.76±0.72mm in posterior part. 2. Incentric occlusion, the angle (alpha) between the horizontal standard line(AB) and anterior slope (BC) was 37.22±3.87 degrees. 3. In 1 inch opening position, the distance between the summit of condylar head from thestandard point of articular eminence (B) was -0.64±3.53mm in horizontal direction and -1.07±1.00mm in vertical direction. 3. In 1 inch opening position, the distance between the summit of condylar head from the standard point of articular eminence (B) was - 0.64±3.53mm in horizontal direction and -1.07±1.00mm invertical direction. 4. In maximal opening position, the distance between the summit of condylar head from the standard point of articulareminence (B) was +5.83±3.05mm in horizontal direction and +0.29±1.58mm in vertical direction. 5. In position relationship between the condylar head and the standard point of articular eminence(B), the condyles were found tobe at the eminences or anterior to them in 51% with 1 inch opening and 95% with maximal opening.

MeSH Terms

Adult
Head
Humans
Male
Mandible*
Reference Values*
Temporomandibular Joint