Background and Aim: The condylar path angle (CPA) is an important measurement that is used to program articulators used in dental treatment. The purposes of the current study were to (1) investigate the CPA in Malay subjects, (2) to compare the measurements with average values (25˚-35˚ Camper’s; based on studies in Caucasians), and (3) to compare the right and left CPAs.
Methods: Thirty subjects aged 21-23 years were recruited. A wash technique impression was made, casts were poured, and face-bow transfers were taken. The casts were mounted to their centric position on a semi-adjustable articulator. Protrusive guides were constructed to allow the mandible to be protruded for 5 mm, and then the angles were measured using the protrusive record method.
Results: The right CPA was within the normal range for 43% (13/30) of participants and out of the normal range for 57% (17/30). The left CPA was within the normal range for 33% (10/30) of participants and out of the normal range for 67% (19/30). There was no statistically significant difference between the left and right CPAs (p = 0.72), but there was a strong linear relationship between left and right CPAs (p = 0.001).
Conclusions: Results of the current study indicated Malay subjects had measurable variations in the CPA, indicating that this population has an ethnic variation in the CPA.
Relevance for patients: To improve the quality of patient care, the CPA should be considered when constructing fixed/removable prostheses that use semi-adjustable articulators. Clinicians should not rely on the set average values that are pre-set on articulators when dealing with patients of Malay descent.
1 Missouri School of Dentistry & Oral Health A.T. Still University, Kirksville, Missouri, United States
2 University of Malaya, Kuala Lumpur, Malaysia
Missouri School of Dentistry & Oral Health A.T. Still University 800 W. Jefferson St. Kirksville, Missouri 63501 USA Tel: +1 660 6262879
Fax: +1 660 626 2812
Department of Experimental Surgery, Academic Medical Center, University of Amsterdam, the Netherlands