ANALYSIS OF UPPER AND LOWER LIP LENGTH AND MEASUREMENTS IN MALAPPURAM POPULATION; A CEPHALOMETRIC STUDY

Abstract

The study aimed to establish normative values for upper and lower lip lengths in different malocclusion types using soft tissue cephalometric analysis of 150 lateral cephalograms (62 males and 88 females) aged 10–20 years from the Indian population. Cephalometric tracing was used to record two linear soft tissue measurements—upper and lower lip lengths. Results showed that males had longer lip lengths than females, and variations were noted with malocclusion type: minimal difference between Class I and II, while Class III showed increased lower lip length. Open bite cases exhibited a slight increase in lip length, whereas deep bite cases showed a decrease in lower lip length. Overall, lip length varied with gender and malocclusion, emphasizing the importance of considering soft tissue parameters like lip length in orthodontic diagnosis and treatment for optimal facial esthetics.