Deciduous Mandibular Second Molar with Supernumerary Roots and Root Canals

An accurate diagnosis of the morphology of the root canal system is a prerequisite for successful root canal treatment.1 Frequently, root canals are left untreated because the clinicians fail to identify their presence, particularly in teeth that have an anatomical variations or additional root canals.2 Supernumerary root is a developmental condition and may involve any tooth. The incidence of occurrence of three roots in deciduous second molar has been recorded to be 27.8%.3 Although any tooth may be congenitally missing, there is a tendency for certain teeth to be missing more frequently than others. Studies on the frequency of missing second premolar have shown this tooth to be congenitally absent in as many as 47.3% of all subjects examined.4 This report describes the presence of supernumerary root and additional root canals in deciduous mandibular second molar with congenitally missing mandibular second premolar tooth bud bilaterally.