Arch widths in Saudi subjects with Class II, Division 1 malocclusion

Journal Article

Asiry, Moshabab . 2012

• المجلة \ الصحيفة: J. Int Oral Health
• رقم العدد: 1
• رقم الإصدار السنوي: 4
• الصفحات: 23-31

مستخلص المنشور

Objectives: To measure arch widths in Saudi subjects with Class II, Division 1 malocclusion and to compare arch widths
between normal occlusion and Class II, Division 1 malocclusion in Saudi subjects.
Methods: The current study consisted  of study models of sixty subjects (30 males and 30 females), aged 13 to 20 years.
All subjects had Class II, Division 1  malocclusion. An electronic digital caliper was used to measure the arch widths.
Results: The result showed that the means of the maxillary intermolar width I, themaxillary intermolar width II, and the
maxillary intercanine width were 49.63 ± 3.07, 44.85 ± 2.84, and 33.41 ± 2.28 respectively. The means of the mandibular
ntermolar width I, the mandibular intermolar width II, and the mandibular intercanine width were 43.99 ± 2.69, 40.41 ± 2.53,
and 26.26 ± 1.72 respectively. The arch widths were larger in males than that of females. The results also showed that the
arch widths were slightly smaller in Class II, Division 1 malocclusion compared to Class I normal occlusion. Significant difference
was observed only in the maxillary intermolar width II. 
Conclusion: The arch widths were larger in males than that of females  and smaller in Class II, Division 1 malocclusion 
compared to Class I normal occlusion.