Mandibular Clinical Arch Forms in Iraqi Population: A National Survey

Abstract

This study aims to identify mandibular clinical arch forms and dimensions in the Iraqi population. Materials and methods: The study sample consisted of pre-treatment mandibular study models of the Iraqi population. The most labial aspect of 13 proximal contact areas was digitized using AutoCAD software to determine the clinical bracket point for every tooth. The dental arches were classified into three types: tapered, ovoid, and square. The arch dimensions were identified using four linear and two proportional measurements. Results: A total of 1005 study models were collected. The arch forms were distributed as ovoid (47%), tapered (36.2%), and square (16.8%), with no significant difference in the distribution between Arabs and Kurds. The ovoid arch form was predominant in class I and class III malocclusion, while the tapered arch form was predominant in class II. All the linear measurements were greater in the males than in the females. The arch widths decreased as the arch form shifted from square to ovoid to tapered, while the arch depths showed the reverse relation. Conclusions: According to this study, ovoid and tapered archwires should suit the majority of Iraqi patients. The ovoid arch form was the most predominant in the subjects with class I and class III malocclusion, while the tapered arch form was the most predominant in the class II subjects.

Dental arch form in a sample of Iraqi adults with sickle cell anemia using 3D scanning technique: A cross-sectional study

“…We rejected the null hypothesis, as there was a significant difference in males with SCA. In females, there was no significant difference between the control group and the SCA group as the tapered arch was prevalent in both groups and this agrees with Ali and Yassir,[ 40 ] who found a higher percentage of tapered arches in normal Iraqi females [ Figures 7 and 8 ].…”

Gene polymorphisms for patients with Class III malocclusion. A pilot study

“…Human malocclusion is a displacement of the teeth and jaws that can impair the quality of life and cause altered facial features, reduced masticatory efficiency, and an increased risk of teeth destruction (1) . Dental arches can vary in size and shape based on the various ethnic and racial groups' exposure to various environmental variables, genetic background, and developmental traits (2) . Numerous genetic and environmental factors that occurred at various gestational stages contributed to a variety of malformations in the dentofacial and craniofacial structures (3) .…”

Integrative Medicine in Diagnostics: Current Advances and Future Prospects

“…Ali et al carried out a national survey to analyze clinical arch forms and dimensions in the Iraqi population [8]. The results showed that the males' linear measurements were more significant based on collecting the 1005 pre-treatment mandibular models.…”