LIP MORPHOLOGY IN BIMAXILLARY DENTOALVEOLAR PROTRUSION IN CLASS I AND CLASS II ADULTS

Dr Abdul Mateen Adil, Dr Saira Lone, Dr Iqra Asghar
2020 Zenodo  
Aim: The purpose of this study was to compare lip morphology in young adults of Pakistani origin with a bimaxillary dental alveolar protrusion model of class I and class II skeleton. Place and Duration: In the Orthodontics department of Allied Hospital Faisalabad (Dental Section) for one-year duration from March 2019 to March 2020. Methods: 100 subjects participated in this cross-sectional comparative study, 50 with a Class I skeleton pattern and the remaining 50 with a Class 2 skeleton
more » ... 2 skeleton pattern. The age of these people ranged from 18-25 years. Sampling included a random selection of subjects. The method consisted of cephalometric analysis of bones, teeth and soft tissues on side cephalograms made in the natural position of the patient's head. A total of 20 variables were used in the study, including 6 skeletal, 3 dental and 11 soft tissue variables. Among the skeletal and tested variables, the sagittal and vertical skeletal analysis showed more or less normal values. However, the variables of the dental analysis determine an increased inclination of the upper and lower incisors and, consequently, a decrease in the angle of the Frankfurt FMIA mandibular incisors. Results and Conclusions: The soft tissue variables showed a full profile with greater vermilion on the upper and lower lips, reduced lip stress, lower lip thickness, and a deficiency in upper and lower lip length. In skeletal II patients, almost all of these variables gave relatively increased readings, but the difference was not statistically significant. The study found that there is no significant difference in the morphology of the lips with a bimaxillary protrusion on the class I and class II skeleton pattern. Key words: bimaxillary protrusion, dento-alveolar protrusion, norms or cephalometric norms
doi:10.5281/zenodo.3956126 fatcat:pahwkftjajg23cegk4q76kwvuy