A COMPARATIVE EVALUATION OF THE EFFECT OF CHANGE IN DENTAL CHAIR INCLINATION IN THE CENTRIC AND ECCENTRIC OCCLUSAL CONTACTS BETWEEN PATIENTS WITH AND WITHOUT CROWN PROSTHESIS

krishnakumar Lahoti, Sonam Agrawal, Jay Kumar Gade

Abstract


Objectives: 1. To evaluate the number of contacts in centric and eccentric occlusion in upright and recline position with and without crown prosthesis.  2. To compare the number of contacts in centric occlusion in upright and recline position with and without crown prosthesis. 3. To compare the number of contacts in eccentric occlusion in upright and recline position with and without crown prosthesis.

Materials and method: Twenty voluntary undergraduate students  with a complete permanent dentition were included in the study. Out of 20 students; 10 with crown prosthesis and 10 without crown prosthesis. The chair was stabilized to check occlusal contacts at two inclinations: 90 degrees and 120 degrees. To record the occlusal contacts in centric and eccentric, (Bausch)12µ articulating foil of two different colour was used. For each participant with and without crown prosthesis both the centric eccentric contacts at upright and recline position were recorded.

Result: There is no change in number of contacts at centric in patients without crown prosthesis, but there is a significant change of eccentric contacts at recline position. With crown prosthesis there is significant change of contacts in centric and eccentric occlusion. In patients with and without crown prosthesis at 120 degree there is a significant change in eccentric contacts.


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