CORELATION BETWEEN MEASURED & CALCULATED VALUES OF SNM ANGLE & MMA

  • Saad Asad
  • Saqib Naeem
  • Waheed-ul- Hamid
Keywords: Vertical Skeletal Dysplasia, Mandibular Plane Angle, Maxillo-mandibular Plane Angle

Abstract

Introduction: Assessment of vertical jaw relationship is pivotal in orthodontic diagnosis and treatment planning. This study was aimed at finding whether significant difference exist between measured value of <SNM & calculated values of <SNM (<SNMc1 & <SNMc2) and measured value of MMA & calculated value of MMA and the difference if any has any impact on overall diagnosis or not.

Materials and Methods: Lateral Cephalograms of 60 subjects (30 females & 30 males) with mean age 18.43+4.21were taken and analyzed by measuring <SNM, <SNP, <SNO, MMA, <UOcc & LOcc Calculated <SNM I.e. <SNMc1=<SNP+MMA, <SNMc2 =<SNOcc+<LOcc and calculated MMA=<UOcc+<LOcc were then determined. Descriptive statistics for each variable was calculated and co-efficient of correlation (r) was calculated among the variables used.

Results: 1. Statistically significant and highly correlated relationship was found between the <SNM (measured) and <SNMc1 & <SNMc2, 2. Statistically significant and highly correlated relationship was found between the MMA (measured) and MMAc & 3 Statistically significant and highly correlated relationship was found between the MMA and <UOcc & <LOcc

Conclusion: No difference exists between the measured & calculated values of <SNM & MMA and thus statistically insignificant difference have no impact on quality of diagnosis.

Author Biographies

Saad Asad

F.C.P.S (Orthodontics), Invisalign Certified Orthodontist Assistant Professor, Department of Orthodontics

Head of Oral Biology & Tooth Morphology, Faculty of Dentistry, The University of Lahore
Saqib Naeem

F.C.P.S (Orthodontics), Associate Professor, Head of Department of Orthodontics, Faculty of Dentistry, The University of Lahore

Waheed-ul- Hamid

MCPS, MS, M.Orth , Professor, Head of Department of Orthodontics, de`Montmorency College of Dentistry Lahore

How to Cite
Asad, S., Naeem, S., & Hamid, W.- ul-. (1). CORELATION BETWEEN MEASURED & CALCULATED VALUES OF SNM ANGLE & MMA. Pakistan Orthodontic Journal, 1(2), 20-23. Retrieved from https://www.poj.org.pk/index.php/poj/article/view/23
Section
Original Articles