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| ORIGINAL RESEARCH |
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| Year : 2009 |
Volume
: 20 | Issue : 2 | Page
: 201-205 |
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The relationship between overjet size and dentoalveolar compensation
Nadia Lashin Soliman1, Mona Mahmoud El-Batran1, Ahmed Wael Abou-Zeid2, Azza Mohamed Sarry El-Din2, Moushira Erfan Zaki2
1 Department of Oral Medicine and Dental Surgery Research, National Research Centre, 33, El-Tahrir St., Dokki, Cairo, Egypt
2 Biological Anthropology National Research Centre, 33, El-Tahrir St., Dokki, Cairo, Egypt
Correspondence Address:
Nadia Lashin Soliman
Department of Oral Medicine and Dental Surgery Research, National Research Centre, 33, El-Tahrir St., Dokki, Cairo
Egypt
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0970-9290.52900
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Background : The purpose of this study was to investigate the effect of overjet size and the dento-alveolar compensation in subjects with normal class I molar relationship.
Materials and Methods: Lateral cephalometric head records of 59 Egyptian children (34 boys and 25 girls) aged 7.5 to 10.5 years with mean age of 8.69±0.73. All had normal class I type of occlusion. The sample was classified into four quartiles according to the overjet size and the cephalometric analysis was based on seven linear and eight angular measurements using a dental tracer programme.
Results: showed that, in spite of presence of high significant over jet size differences between the groups; there was no significant differences in all the studied parameters were found. Applying the least significant differences (LSD) test and coefficient correlations between the studied parameters clarifying that there was a significant differences in angular measurements (SN-AB, SN-Occl, I-I, I-ML, I-NB).
Conclusion: during transitional dentition there was a sufficient dento-alveolar adaptation to growth changes in the saggittal jaw relation ship to attain normal class I type of occlusion. This compensation is pronounced in angular parameters and clustered in the lower arches particularly in incisal area. |
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