Appraising Lower Incisor to Mandibular Plane Angle in Different Facial and Sympheal Morphology

Background: In orthodontic diagnosis and treatment planning assessment of an individual’s facial skeletal pattern in vertical, sagittal and transverse direction is prevalent. Dental compensation is the reverse of skeletal disharmony. Objectives: This study has correlated the position of mandibular incisors inclination with different facial types and with the mandibular symphyseal morphology. Materials and Methods: The sample consisted of ۱۰۰ Pakistani patients of two different age groups i.e. adolescents up to ۱۲ years and audlts up to ۲۲ years on which R–angle, Li–MP, B–MP, Li–MP, symphyseal width (W) and depth (D) were measured. Results: No correlation was found between Li–MP and R–angle, B–MP, Li–MP, and W except with the D i.e. symphyseal depth. Conclusions: No significant association observed between lower incisor inclination, different facial types, and symphyseal morphology except with the depth of the symphysis. Slight correlation of differential jaw growth and dental changes with age are coincidental events with no relationship.

Keywords:

Lower Incisor Inclination , R , Angle , Symphyseal Morphology