ABSTRACT
Objective: The objective of this study was to'describe the Cephalometric norms for Saudi adults and to compare it with accepted standards for Caucasians according to Ricketts' analysis
Methods: Lateral cephalometric radiographs of 60 Saudi adults [30 male and 30 females] with balanced harmonious faces and clinically acceptable permanent occlusion, aged 21-23 years old were used. A computer-aided cephalometric analysis was performed, and the mean values, range and standard deviations for the various cephalometric variables were obtained
Results: A comparison of the results with the Ricketts standards showed that the facial axis, mandibular plane to Frankfort plane, convexity [A-N-Pog] and lower lip to esthetic plane were statistically not significant, on the other hand, all the angular and linear measurements of the upper and lower incisors positions were markedly increased and the interincisal angle was much lower for the Saudi than for the Caucasians
Conclusion: It was evident that even in the Saudi ethnic groups with so-called well-balanced Face, there were some fundamental variations in the craniofacial structure of Saudi Arab When compared with Ricketts norms
ABSTRACT
Objective: The objectives of this investigation were to describe the prevalence of anterior tooth size discrepancies in Skeletal Class III with mandibular prognathism, and whether sexual dimorphism exists for anterior tooth size ratios
Methods: The measurements were obtained from 40 study models with both sexes [19 female, 21 mal] All patients were Saudi nationals, between the ages of 19 to 30 years old. Descriptive statistics and t-test were used for the analysis of the data
Results: Subjects having skeletal Class III with mandibular prognathism showed highly significant anterior ratio [80.6 +2] compared to the Bolton Study [P<0.001], a high prevalence of anterior tooth size discrepancy, no sexual dimorphism and significant difference in some mesiodistal tooth size difference between sexes
Conclusion: Tooth size analysis is an important diagnostic tool and should be included as one part of the records when establishing treatment planning