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Purpose: To report a rare presentation of an ameloblastoma mimicking an endo-periodontal lesion. Materials and methods: In this case report, we present the unusual clinical course of a 78-year-old Caucasian male patient, seeking single tooth implant rehabilitation at location 42 (lower right lateral incisor), initially unsuccessfully treated at different clinics for a persistent endo-periodontal lesion associated with this tooth, by both an endodontist and a periodontologist, which finally lead to tooth loss. Results: CBCT imaging of the anterior mandible region revealed a persistent radiolucency and subsequent enucleation of the lesion in the partially healed extraction socket revealed the true underlying diagnosis: a solid follicular ameloblastoma. A re-entry with biopsy was planned after radiological confirmation of lesion growth 1 year later, reconfirming the diagnosis and necessitating partial segment resection of the mandible. Conclusions: In the presence of lesions refractory to therapy, consideration towards a broader differential diagnosis and an appropriate investigation should be undertaken before the decision on implant placement. [ABSTRACT FROM AUTHOR]

The article discusses the study that aims to develop a database of paediatric head voxel models for Monte Carlo (MC) dosimetric applications. It states that children cannot be represented by one average phantom covering the entire age range like adults because their organs change rapidly in size and shape and that paediatric head voxel models is recommended for dose calculations through MC simulations.