Sir, we would like to share with your readers an unusual case of a patient with a double mandibular molar. A 26-year-old male patient presented to our department complaining of a missing tooth in the lower left posterior region. He gave a history of extraction of the tooth two years previously due to caries. Clinical examination revealed missing teeth 36 and 38 but tooth 37 demonstrated the anomalous morphology of a double tooth (Fig. 1), which radiographically (Fig. 2) revealed a large tooth with multiple roots, none of which were anomalous.

Figure 1
figure 1

Tooth 37, demonstrating the anomalous morphology of a double tooth

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Figure 2
figure 2

Radiograph showing a large tooth with multiple roots

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Such teeth are often confused with geminated and fused teeth. Gemination is defined as a single enlarged tooth or joined tooth in which the tooth count is normal when the anomalous tooth is counted as one.1,2 Fusion is defined as a single enlarged tooth or joined tooth in which the tooth count reveals a missing tooth when the anomalous tooth is counted as one.1,2 In order to avoid confusion we termed this a double tooth. Double teeth are uncommon developmental anomalies that can occur in the deciduous and permanent dentition with a prevalence of 0.08% to 0.5%,3 however, molars are rarely affected.