Ambreen Afzal, Irfan Qamar, Rouf Shah.
Variation in the centric slide according to the facial forms
J Surg Pak Sep 2005;10(3):6-10.
Karachi Medical & Dental College Karachi

Objective:To compare the Centric occlusim-Centric relation (CO-CR) discrepancy among subjects having various facial forms i.e. normal, hypodivergent and hyperdivergent, determined by sagittal cephalometric analysis Study design: Comparative; cross sectional study Place and duration:Orthodontic outpatient department, Karachi Medical & Dental College, Karachi. Duration of the study was 18 months. Patients and Method:Study included 80 pretreatment orthodontic patients, divided into 3 groups according to their facial patterns. The first lateral cephalogram was taken in CO, then leaf gauges were placed in between incisors to guide the mandible in CR. The second cephalogram was taken with leaf gauges in place. Both the radiographs were traced. Angle ANB was measured for sagittal analysis. Angles from both cephalograms were compared with each other Results: Significant difference (p<0.05) was found in values of ANB in CO and CR cephalograms. Significant CO-CR discrepancy was found (p<0.05) in Angle`s class III patients in comparison to Angle`s class I and class II. Conclusion: CO-CR discrepancy can occur regardless of age, gender and Angle`s classification. Special emphasis should be given to Angle`s class III patients for the centric slide.

Category: Dentistry
Keywords: Centric Occlusion.

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