Assessment of clinical decision making practice and associated factors among nurses working in jimma university medical center .jimma south west Ethiopia,

Abstract

BACKGROUND: Dental arch dimensions, including dental arch width, length, and form, are important value for the diagnosis, treatment, planning, and treatment outcomes concerning patients who are seeking orthodontic treatment in all age groups. Different ethnic groups and populations display variable dental arch measurements and characteristics. It is well-known that dental arch dimensions continue changing throughout growth and development, but during adulthood, the changes decrease. Arch form is the position and relationship of teeth to each other in all three dimensions; dental arches are roughly categorized as square, ovoid, and tapered. These arch forms can also be expressed as narrow, average and wide. OBJECTIVES:.assessment of arch width and form in normal occlusion among 15-30 years old jimmaoromo population, 2018. METHODS: A crossectional study design with convenient sampling was conducted from October 20 to November 10, 2018, The data was collected using interview guide structured questioners, clinical examination, dental impression was taken by alginate impression material and poured to by dental stone to form dental stone vernier caliper was used to measure parameters . The obtained data was coded, compiled and entered into a computer, and analyzed with the SPSS software package ( SPSS 22.0). mean, SD, T- test and chi square were used to analyze results RESULT AND DISCUSSION:Ovoid arch form is the most frequent arch form in both arches 29 (58%) for upper and 35(70%) lower. Square arch form is not found in female; male has higher in square and ovoid . The mean of ICW, IMW,IPW, and CR is more in both arches and more in male than in female . CD of female is more frequent than male in both arches and MR and MD shows no deference among gender in their frequency . In all parameters except CR upper mean value is greater than lower counter parameters. Conclusion and recommendation: Ovoid is the most common arch form in jimmaoromo with normal occlusion and the mean value of arch width;Canine depth is higher in male in both arches and the mean value of female shows higher canine ratio.Ovoid arch form is more frequent among female in mandible. The clinician should select the appropriate preformed arch wire form based on the patient’s arch form and ovoid arch wires should be the shape of choice. Further large scale studies are needed to compare dental arch form between angle classification of malocclusion and different ethnic groups.