Relationship of Occlusal Planes with Sella-Nasion and Frankfort Horizontal Planes in Different Skeletal Malocclusion. A Cephalometric Study

Objective: The objective of this study is to assess the relationship anterior and posterior occlusal planes (AOP & POP) with Sella-Nasion (SN) Frankfort Horizontal (FH) in different skeletal malocclusion. Study Design Setting: It was a cross-sectional carried on 202 (40 males 190 females) pretreatment lateral cephalogram orthodontic patients Jinnah Medical Dental College, Karachi from June September 2021. Methodology: sample divided into pattern using ANB angle (Class I 0-4°, Class II ANB>4° III <0°). AOP POP measured respect SN FH each class. Two way ANOVA used determine among malocclusions. Results: cephalogram, 40 females were included study, out which 102 (28 class I, 88 (12 76 12 III. showed steeper SN-AOP FH-POP than both There statistically significant between all three malocclusions (p<0.005) FH-AOP (p>0.025).While SN-POP not classes. Conclusions: malocculsion flatter