The objective of Materials and Methods: The subjects were divided into four groups based on age and videography was used to study the anatomic and physiologic peri oral age-related changes during rest and smile related to upper lip length, upper lip thickness, interlabial gap at smile and buccal corridor.

Results: The upper lip length showed increase with age. The upper lip thickness significantly decreased with age with increasing age the upper lip length decreased from rest to smile. Interlabial gap is significantly decreased with the age. Buccal corridor didn’t show any significant change.