Multimodular assessment of a calcified extraradicular deposit on the root surfaces of a mandibular molar

Abstract

Aim

To achieve a better understanding of a calcified extraradicular deposit on the apical root surfaces of a mandibular first molar associated with a radicular cyst and a sinus tract. A multimodular approach was applied using a combination of multiple investigation methods.

Summary

This case report presents a mandibular first molar with a calcified extraradicular deposit on the apical root surfaces of both roots. An apical periodontitis lesion was present and a sinus tract served as the only communication with the oral cavity. Diagnosis and treatment planning were based on clinical, radiographic (two and three dimensional) and ultrasound examination. The tooth was further analyzed after extraction using microscopic imaging, nano-computed tomography (nano-CT), hard- and soft tissue histology and electron probe microanalysis (EPMA). This multimodular approach revealed the calculus-like appearance and mineral composition of the extraradicular deposit. Multiple hypotheses about its aetiology are discussed.

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