Synopsis in dentistry:6

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6.GEMINATION-An attempt at division of single tooth before calcification ,resulting in incomplete formation of two teeth.The resultant structure will have two completely or incompletely seperated crowns with a single root and root canal.
TWINNING-The division of a  single tooth resulting in one normal and one supernumerary tooth.The number of teeth will be more than normal.
FUSION-Union of two normally seperated tooth germs.If union occurs before calcification ,the two teeth are completely united to form a single large tooth.if union occurs after calcification ,there is union of roots only.The tooth may have seperate or fused root canals.Fusion of teeth is more common in deciduous teeth.
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