Prevalence of Radix Entomolaris &Radix paramolaris in the extraction of permanent mandibular first and second molar (5-year clinical study)

Abstract

Aim: To determine the Prevalence of Radix Entomolaris & Radix paramolaris in thelower molar teeth during their extraction.Introduction: mandibular molar is the earliest permanent posterior tooth to erupt,responsible for development of occlusion and important physiologic functions likechewing. Permanent molars was the most common teeth needing extraction inIraq. Thus, it is of utmost importance that the clinician be familiar with variationsin the root and root can Mandibular molarsMaterials and Methods: A clinical Study for 5- years done 0n 842 extracted teeth. Inthe Department of oral and maxilla-facial surgery clinic, college of dentistry,university of Tikrit.Results: Radix Entomolaris Radix& paramolaris was found in38 of the extractedteeth with prevalence of 4.5 % with95 % confidence ranging between (3.1-5.9%).1st molar consistuited about 3 / 4 (76.7 %) of the study sampling .On over allthe prevalence rate of this root variant was slightly higher among females. Alsothe position of this variation shows that the right side significantly higher.Conclusion: The high frequency of an extra root in mandibular molars makes itessential for dentist to be familiar with this anatomical variation. . Furtherextensive research is warranted to detect the incidence of this anatomical variationin the complete Iraqi population