Comparative cephalometric analyses between class III and class I malocclusion of Malay females

Osama Bahaa, Mohd Fadhli Khamis, Mohammad Khursheed Alam, Norehan Mokhtar

Research output: Contribution to journalJournal articlepeer-review

7 Scopus citations


Background: Knowledge of craniofacial features of Class III malocclusion is important for treatment plane and predication of treatment outcome. The aim of this study was to compare the dento-skeletai features of untreated Class III and Class I malocclusions in Malay female subjects. Materials and Methods: The total number of x-rays consisted of 140 pre-treatment laterals cephalometric (70 for each group) with aged ranged 18 and 24 years of age (mean age 21.10 ± 1.90) years. Assisted Simulation System for Orthognathic Surgery (CASSOS) software was used to trace all cephalometric x-rays. The 28 angular and linear measurements chosen were derived, in part, from the analysis of Steiner, McNamara, Downs, Jarabak, and Wits appraisal, Jacobson analysis. Results: Midfacial length was shorter in Class III than Class I malocclusion. Mandibular length was larger in Class III malocclusion. The maxillomandibular differential was increased in Class III malocclusion. Class III malocclusion shows increased of the lower anterior facial height than Class I malocclusion. The FA° showed a larger value in Class III malocclusion. The saddle angle of Class III malocclusion females showed more acute than Class 1 malocclusion females. The position of upper incisor to N-A plane shows more proclination in Class III malocclusion. Conclusion: The clinical implication of this study is a knowledge of the normal dentoskeletal patterns of Malay females with Class III and class I malocclusion for clinical and research purposes.

Original languageEnglish
Pages (from-to)283-286
Number of pages4
JournalInternational Medical Journal
Issue number3
StatePublished - Jun 2014
Externally publishedYes


  • Cephalometry
  • Class I malocclusion
  • Class Iii malocclusion
  • Craniofacial
  • Dentoskeletal


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