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KMID : 0354619950070010099
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Journal Dankook Dental Research Institute
1995 Volume.7 No. 1 p.99 ~ p.107
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A study on maxillary basal bone morphology in skeletal Class Ⅲ malocclusion requring orthognathic surgy
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Abstract
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This study has been performed to determine whether significant differences in the maxitlarlr basal bone pattern exist betaTeen skeletal Class Ⅲ malocclusion and normal occlusion. Matefals for the skeletal Class Ⅲ sample consisted of lateral cephalometric roentgenograms and maxillary cast models of 29 adult individuals, 15 males and 14 females. The average age was 19.75 years with a range from 16.4 to 29,1 years. A normal colltrol sample consisted of lateral cephalometric roentgenograrris and maxillary cast models of 24 adult ifldividuals, 13 nfales and 11 females. The average age was 24.25 years with a range from 20.8 to 29.4 years.
The results of this study can be summarized and concluded as like fellows.
1. In comparing sexual difference of maxillary basal bone morphology in skeletal Class Ⅲ malocclusion, the following parameters of males were found to be significally larger than those of females inter first premolar width, inter molar width, oblique canine height, oblique molar height and maxillary basal bone perimeter.
2. In comparing sexual difference of maxillary basal bone morphology in normal occlusion, the following parameters of males were found to be signiflcally larger than those of females inter canine width, inter filrst and second premolar width, jilter molar width, oblique canine height and oblique molar height.
3. In comparing maxillarr basal bone morphologic difference between skeletal Class Ⅲ malocclusion and normal occlusion in males, the followilng parameters were found to be significally larger in normal occlusion inter canline width, inter canine height, inter molar height, oblique canine height and oblique molar height.
4. In comparing maxillary basal bone morphologic difference between ,skeletal Class Ⅲ malocclusion and normal occlusion in females, the following parameters were found to be significally ]arger in normal occlusion inter canine height, inter molar height, oblique canine height, oblique molar height and maxillary basal bone penmeter.
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KEYWORD
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