Fibrome desmoïde

Desmoplastic fibroma is a rare benign intraosseous neoplasms. They can affect the jaw. Posterior mandibular bone involvement is the most frequent localization. They are locally aggressive and recurrence is frequent. Radioclinical signs are not specific and the histological diagnosis may be difficult. Extended surgical removal is the recommended treatment.     

Allogreffe de face et implantologie basale (implant-disques à appuis corticaux)

Introduction

We report a case of total oral rehabilitation with basal implants (cortically anchored disk-design implants) on a patient who received a facial allograft 1 year earlier.

Observation

A 31-year-old patient was suffering from a plexiforme neurofibroma spread into the soft tissues of the oral cavity with huge deformations of the jaws. The operation consisted in pulling out numerous supernumerary impacted teeth, removing unnecessary soft tissues, settling six basal implants in the maxilla and seven in the mandible. The following day, two resin bridges were adjusted and cemented onto the implant abutments. The permanent bridges were settled 2 months and half later. The outcome was still unremarkable 2 years after the implant procedure.

Discussion

This case report raises important issues, notably the relevance of an oral rehabilitation with implant-supported prostheses on an immunosuppressed patient. In this specific case, this was impossible to achieve using removable prostheses. A facial reconstruction with its plastic, functional, and social goals seemed inconsistent without an oral rehabilitation. Even if they have not been published, cases of grafted patients with dental implants are unexceptional. Lastly, this rehabilitation has been planned for a particularly monitored patient. The second important question regards the choice of the basal implantology. This option has been motivated by the possibility to complete the case in one sole operation with provisional prostheses cemented the day after that act like orthopaedic external fixators providing an exceptional primary stability. The cortical anchorage, which was the only reliable on this patient, allowed to avoid bone grafting. Finally, the particular thinness of the implant emergence limits to the minimum the communications between bone and oral cavity. We would like to stress that the only objective of this observation was to document a specific case and possibly to open the way to a scientific study in accordance with the regulations of clinical research.     

Peri-implantitis or squamous cell carcinoma?

INTRODUCTION: Squamous cell carcinoma developed around dental implants has seldom been described. It simulates peri-implantitis. The authors present two cases and a literature review. CASE REPORTS: A 70 year-old woman presented with an exophytic tumor developed around dental implants placed in the anterior part of the mandible. Panoramic X-rays showed major osteolysis, especially around the distal abutment implants. A 72 year-old patient, smoker, presented with chronic lichen planus; he was carrying two implants supporting an overdenture with ball-attachments, placed 15 years before. He presented with an ulcerated symphyseal tumor, bone loss around implant in position 43. The implant had been spontaneously pushed out. In both cases the diagnosis was squamous cell carcinoma. DISCUSSION: Few cases of squamous cell carcinoma developed around dental implants have been reported. They initially mimic peri-implantitis. The carcinogenic role of the implant has never been established. Another hypothesis is the migration of malignant cells, originating from a mucosal tumor, through the sulcus. Risk factors for squamous cell carcinoma (smoking or alcohol consumption, precancerous lesions) are an indication for a permanent follow-up. Biopsies will prove the diagnosis.