Occlusal Schemes during Eccentric Jaw Movements in Dental Students of Lahore Medical and Dental College, Lahore

Abstract

Background: Occlusion plays an important role in the health of stomatognathic system. Care full designing and rehabilitation of occlusal scheme in restoring lost dentition is required. Aim: To find out the occlusal schemes and to study the nature of occlusal contacts during maximum intercuspation to protrusive and lateral excursions. Study design: A cross-sectional observational study. Place & duration: Prosthodontic Department, Lahore Medical and Dental College from 10th Jul ‘21 to 10th October’21. Methodology: A total of 104 dental students were selected and their occlusal schemes were classified. Participants occlusal interferences i.e; centric, protrusive, mediotrusive and laterotrusive were also recorded using shim stocks, diagnostic instrument and by visual assessment. Horizontal and vertical overlap of anterior teeth was also measured. Results: Among 104 participants studied, 61.5% were found having canine guided occlusal scheme, 29.8% having group function whereas 8.7% had the combination of both. Majority participants do not have any occlusal interference 79.8%, whereas 20.2% were having interferences out of which the group function occlusal scheme had maximum number of interferences,10(9.6%). Insignificant relationship was obtained between presence of interferences and occlusal schemes, P>0.05. The type of interference most commonly seen was the protrusive interferences (37.5%). Conclusion: The type of occlusal scheme commonly observed is canine guided occlusion, however there were no occlusal factors that were significantly associated to any particular occlusal scheme. Keywords: Laterotrusive, Canine protected occlusion, Canine guided occlusion Group function occlusion, Occlusal schemes,

Different occlusal schemes in eccentric mandibular positions

“…Groups of teeth on the working side take up the occlusal load and thus relieve the rest of the teeth from occlusal trauma. However, this finding contradicts to few previous studies [15][16][17] which state that the normal pattern that the majority of young people have canine-guided occlusion. These variations in occlusal patterns could be attributed to the difference in criteria used for sample selection, differences in daily dietary habits, cultures and influence of materials used to register contacts as well as differences in classification system which may be the auxiliary circumstance that contribute to the observed difference.…”