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Alveolar base and dental arch widths with segmental arch measurements in different classes of malocclusions (A comparative study) | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 23, Issue 3, 2011, Pages 130-136 | ||
| Authors | ||
| Ausama A. Al- Mulla; Noor F.K. Al-Khawaja | ||
| Abstract | ||
| ABSTRACTBackground: The size and shape of the arches have considerable implications in orthodontic diagnosis andtreatment planning. The aim was to evaluate and compare alveolar bases, dental arches and segmental archdimensions of class II division 1, class III malocclusion groups with normal occlusion subjects and to check genderdifferences and maxillary and mandibular arch widths difference.Materials and Methods: Dental casts of 62 subjects aged between 18 - 28 years were included in the study. Theywere equally divided between males & females, consisting of 26 class I normal, 22 Class II division 1, and 14 Class IIImalocclusion and eleven liner measurements were utilized for each dental arch.Results: All measured dimensions were greater in males than in females except for mandibular inter alveolar premolarwidth and maxillary left canine molar distance in class III malocclusion and in maxilla than in mandible except intermolar width in class II and class III groups and alveolar base dimensions in class III malocclusion. In class I allmeasurements were wider than class II division 1 while, in class III was wider than class I in all mandibular alveolarbase and mandibular inter premolar width and wider in all maxillary dental arch widths, all mandibular alveolar basedimensions and mandibular inter canine and premolar widths than class II division 1 group.Conclusion: Maxillary molar teeth in subjects with Class II division1 tend to incline buccally to compensate theinsufficient alveolar base, while subjects with Class III malocclusion maxillary posterior teeth tend to incline linguallyand mandibular posterior teeth inclined buccally due to the restriction in maxillary arch.Key words: Alveolar base; dental arch; class I normal; class II division 1 and III. (J Bagh Coll Dentistry 2011;23(3): 130-136). | ||
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