Abstract
Background and aims. This study observed occlusal contacts and their area on the teeth during lateral
mandibular movements. The percentage of each occlusal pattern was determined.
Materials and methods. Fifty subjects (male: 27, female: 23), aged 20-29 years, were included in the study.
The criteria for selection were as follow: all subjects (i) were in their twenties; (ii) had normal occlusal
alignment, no temporomandibular signs and symptoms with Angle’s Class I relationship; (iii) had full dentition
except for third molars; (iv) had no history of orthodontic therapy; and (v) had no restorations involving a cusp.
The occlusal contacts were recorded with occlusion foil in three lateral excursions: 1, 2 and 3 mm from the
maximum intercuspation. Data were analyzed with chi-square test.
Results. Most of working-side contact patterns were classified as group function (60%). Canine protection was
rare (17%). Contact patterns other than canine protection and group function were found in 23% of the contact
patterns on the right side. On the left side, group function was seen in 51%, canine protection in 21% and others
patterns in 28% of the studied subjects.
Conclusion. On laterotrusion, most subjects had group function on the working side but canine protection was
rare.