Fusion of the 2nd maxillary molar with the impacted 3rd molar.

UNLABELLED: Subject matter: The dentist has to deal with complicated cases of fused molars, which are rather rare and morphologically very varied. A wrong or incomplete diagnosis can considerably complicate a planned therapy.

CASE REPORT: The authors describe a case of apical periodontal complication of fused teeth that had to be removed surgically. The upper 2nd molar fused with the impacted 3rd molar and was diagnosed for extraction.

CONCLUSION: Even a careful diagnostic procedure and X-ray image sometimes may not indicate the exact location and mutual position of the fused teeth. The authors make us aware of the possible occurrence of fused roots, and the necessity to inform the patient ahead of time about the course of endodontic or surgical interventions, possible complications and their removal. They describe the positive influence of PRP (platelet rich plasma) in wound healing. In order to establish the exact indication and therapy, they emphasize the importance of using CT imaging diagnostics or a 3D-CT examination (Fig. 7, Ref. 15).