Saudi Journal of Oral and Dental Research (SJODR)
Volume-4 | Issue-09 | 648-656
Original Research Article
Evaluation of Soft Tissue Measurements in Skeletal Class II Division I Malocclusion with Low Mandibular Plane Angel in Himachali Population: A Lateral Cephalometric Study
Ankur Sharma, Aseem Sharma, Apurva Vaidya, Nandita Sood, Ambuj Chandana, Mandeep Phor
Published : Sept. 30, 2019
Abstract
Aim: To evaluate the soft tissue characteristics of skeletal Class II Division 1 subjects (group II) with low mandibular plane angel compared with skeletal Class I subjects (group I) in himachali population. Material and Methods: Lateral cephalograms of 100 adults (60 women, 40 men; age range 18-50yrs) were divided into 2 groups based on horizontal and vertical skeletal pattern (SN-MP angle): group I, 50 subjects; group II-low angle (<27°), 50 subjects. The correlations and multiple linear regression tests were used to determine the skeletal and dental variables influencing soft tissue characteristics. Results: For the soft tissue analysis of all subjects, lower lip thickness was significantly increased in group II-L compared with group I. The perioral soft tissue measurements of group II were correlated with the inclination and anteroposterior position of the maxillary and mandibular incisors along with facial depth (N-Go) and facial length (S-Gn). Upper lip strain of group II was influenced by the inclination and anteroposterior position of the maxillary incisors. Conclusions: It is important to evaluate lip strain and lip thickness based on the skeletal pattern as well as dental inclination to obtain balance in the perioral muscle activity.