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VOLUME 10 , ISSUE 4 ( October-December, 2020 ) > List of Articles


An In Vivo Study to Determine a Mathematical Formula to Relate Horizontal Condylar Guidance Angle Derived Clinically and Radiographically

Gopala Krishna Keerthi, Pulagam Mahesh, Srinivas R Pottem, Gantasala Divya

Keywords : Condylar guidance angle, Interocclusal records, Panoramic radiographs, Semi-adjustable articulator, Temporomandibular joint

Citation Information : Keerthi GK, Mahesh P, Pottem SR, Divya G. An In Vivo Study to Determine a Mathematical Formula to Relate Horizontal Condylar Guidance Angle Derived Clinically and Radiographically. Int J Prosthodont Restor Dent 2020; 10 (4):158-162.

DOI: 10.5005/jp-journals-10019-1300

License: CC BY-NC 4.0

Published Online: 00-12-2020

Copyright Statement:  Copyright © 2020; Jaypee Brothers Medical Publishers (P) Ltd.


Aim: Present study aims to derive the condylar guidance angle both clinically and radiographically and relate them by a mathematical formula. Materials and methods: The study was conducted on 22 patients and both the clinically and radiographically derived condylar guidance values are used to derive a mathematical formula. Students t test and Pearson correlation test was done to find the difference between sagittal condylar guidance angle between protrusive interocclusal records and panoramic radiographs. Results: The model of regression for right side was hypothesized and equation obtained was y = −0.080x + 23.49, while the model of regression for left side was hypothesized and equation obtained was y = −0.101x + 25.12, where y = dependent variable (condylar guidance value obtained by panoramic radiographs) and x = constant variable (condylar guidance value obtained by protrusive interocclusal records). The present study found that on the right side, there was a statistically significant (p = 0.019) difference in the mean protrusive interocclusal records (17.04 ± 6.61) and the panoramic radiographs (22.12 ± 7.2) whereas it was not significant (p = 0.101) on the left side. Conclusion: From the observations, it can be concluded that the radiographically obtained condylar guidance angles were higher than the clinically derived angles.

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