Volume 2 - Issue 2 - IJMD

Review Articlein our case there was fusion between two mandibularincisors in the same quadrant. Also there was fusion ofprimary incisors in the same region.In fusion of teeth involving mandibular lateral incisorand canine, hypodontia of secondary dentition iscommon and no effects on the secondary dentitionwhen fusion is between primary mandibular incisors. 5But in our case though the fusion of primary teeth wasbetween mandibular incisors, secondary dentition alsopresented with the same complaint.Fig 3. Exfoliated fused deciduous incisors of the samequadrant.DiscussionFusion is more common in primary dentition than thepermanent dentition. But our case presented fusionin both the dentition of the same quadrant. Datasavailable in the literature points out that the prevalenceof fusion ranges from 0.5% - 2.5 % according to thepopulation surveyed. 2The etiology of fusion is unknown. But fusion resultswhen development of two tooth germs takes placeso closer and they come into contact and fuse beforecalcification. Some researchers believe that physicalpressure and force generated during growth causescontact between two tooth germs. 3 Viral infectionand usage of thalidomide during pregnancy is alsoconsidered as possible etiology. 4Fusion of primary teeth usually is seen in mandibularcanine and lateral incisor region. In contrast to this,The clinical problems associated with fused teethare esthetics-arch symmetry, spacing, malocclusion.These problems require cosmetic and orthodonticconsideration.Referrences1.2.3.4.5.Eliecer Eidelman, Dr Odont, MSD. Fusion of primaryteeth.pediatric dentistry. The American academy ofpedodontics vol.3.No.4.Grahnen et al. numerical variation in primary dentitionand their correlation with the permanent dentition,odont Rev 12:248-257,1961.White SC, et al oral radiology principles and interpretation5thed, St.louis:Mosby Inc,2004;337-338.Kjaer I,interrelation between fusions in the primarydentition and agenesis in the succedaneous permanentdentition seen from an embryological pointof view. Jcraniofac Genet Dev Biol2000;20:193-197.Ahmeterean sekerci et al, prevalence of double ( primary)teeth in Turkey- A study. Pakistan oral and dental journal,vol 31, No.1 june 2011.442Indian Journal of Multidisciplinary Dentistry, Vol. 2, Issue 2, February-April 2012