EVALUATION OF MAXILLARY ARCH ANALYSIS IN MODINAGAR ADULTS WITH NORMO-OCCLUSION IN VIVO STUDY

Purpose: The aim of this study is to evaluatemaxillary arch analysis in Modinagar adultswith normo-occlusion.

Materials and Methods: A total of 100 patients aged between 20 to 30 years with well-aligned arches up to second molar teeth were included in this study.Upper and lower alginate impression using properly fit dentulous metallic trays was taken for each arch. These impressions were transferred to the laboratory for pouring with Dental Stone to obtain dental arch. Each study model was signed by the coding number and either F or M letter (F=female, M=male).A digital calliper was used to measure the following parameters: Inter-molar distance, inter-canine distance, inter-molar depth and inter-canine depth.

Results:The inter canine width among the males (36.70±2.589) was found to be significantly higher as compared to females (33.66±1.343). The inter-molar width among the males (55.07±4.726) was found to be significantly higher as compared to females (50.50±3.378). the intergroup comparison of inter-canine depth between males and females using the independent t test with p value less than 0.05 considered to be statistically significant.The inter-canine depth among the males (9.098±1.754) was found to be higher as compared to females (8.854±1.051) with p value of 0.041 denoting a significant difference. Among the males 54% were having ovoid arch form, 26% were having Tapered arch form and 20% were having Square arch form. Among the females 40% were having Ovoid arch form, 32% were having Tapered arch form and 28% were having Square arch form .The intergroup comparison between males and females in terms of shape of arch was statistically significant with p value of 0.346.

Conclusion:This study shows that males showed larger arch size than females.The Ovoid arch form was the most prevalent, followed by the tapered and square arch form in the Modinagar population among both males and females.