We are using cookies to implement functions like login, shopping cart or language selection for this website. Furthermore we use Google Analytics to create anonymized statistical reports of the usage which creates Cookies too. You will find more information in our privacy policy.
OK, I agree I do not want Google Analytics-Cookies
Journal of Craniomandibular Function
Login:
username:

password:

Plattform:

Forgotten password?

Registration

J CranioMand Func 6 (2014), No. 3     14. Oct. 2014
J CranioMand Func 6 (2014), No. 3  (14.10.2014)

Page 193-206, Language: English/German


Methods of determining centric relation: a comparative study
Hellmann, Daniel / Becker, Georg / Fingerhut, Christopher / Schmitter, Marc / Rammelsberg, Peter / Schindler, Hans-Jürgen
To minimize neuromuscular adaptations, the centric relation established in reconstructive dentistry should ideally represent the anterior-superior, non-laterally displaced position of the condyles in the glenoid fossa. In 35 healthy volunteers without temporomandibular dysfunction, the Jaw Motion Analyzer (JMA) jaw-tracking system was used to measure the spatial coordinates of defined condylar and incisal points during manual guidance in the posterior-superior direction and during fast and slow closure movements (neuromuscular techniques), and to compare these positions with those measured during physiological jaw-closing movement ending in intercuspal position (ICP). At small incisal edge distances, condylar displacement relative to ICP was approximately 0.3 mm in the posterior-superior direction with manual guidance, and about 0.3 mm in the anterior-superior direction during the neuromuscular techniques. With large incisal edge distances, the neuromuscular techniques resulted in anterior displacement of the condyles in an anterior-superior position against the slopes of the articular eminences; in contrast, condylar position remained relatively stable with posterior-superior guidance. In summary, it can be concluded that, at small incisal edge distances, the neuromuscular techniques resulted in an anterior-superior orientation of the condyles in the glenoid fossa. This corresponds to the idealized notion of an anterior- superior physiological condylar position.

Keywords: methods of determining centric relation, centric relation recording, reliability of methods of determining centric relation