This week is a neat case of fusion with some clinical photos as well. Fusion is when two adjacent developing teeth fuse into one large tooth. This results in an overall tooth count of 15 for an arch. Gemination, which can have a similar appearance, results in an overall tooth count of 16 for an arch. This case involves a maxillary first and second molar that fused together into one huge tooth. Check it out.
Periapical radiograph showing maxillary right first and second molar in close approximation.
Bitewing radiograph showing the two crowns of the maxillary first and second molar in close approximation.
Clinical photo showing the cusps of the two crowns forming one ‘mega’ tooth.
Clinical photo showing view on facial surface.
Fusion is more common in the anterior region; hence this is a really neat case. If you have any questions, please feel free to ask in the comments below. Thanks and enjoy!
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How to distinguish fusion and gemination radiographically?
By counting the number of teeth. Fusion results in fewer number of teeth in an arch (15). Gemination results in the same number of teeth in an arch (16).
Thank you