The Journal of the American Dental Association
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J Am Dent Assoc, Vol 139, No 8, 1061-1065.
© 2008 American Dental Association
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CLINICAL PRACTICE

Oral Squamous Cell Carcinoma Associated With Symphyseal Dental Implants

An Unusual Case Report



Lorena Gallego, MD, Luis Junquera, MD, DDS, PhD, Jaime Baladrón, MD, DDS, PhD and Pedro Villarreal, MD, DDS, PhD

Background. The development of squamous cell carcinoma (SCCa) around dental implants is an uncommon pathological manifestation. This case report describes a patient with history of oral lichen planus (OLP) and previous SCCa of the gingiva who developed SCCa adjacent to symphyseal implants.

Case Description. An 81-year-old edentulous woman with history of OLP developed an in situ SCCa on the left mandibular edentulous ridge. One of the authors, an oral and maxillofacial surgeon, performed a marginal mandibular resection of the lesion. Functional oral rehabilitation was achieved by means of two endosseous symphyseal implants. Three years after the patient underwent implant-supported reconstruction, the oral and maxillofacial surgeon detected an exophytic mass adjacent to the right implant and diagnosed it as recurrent SCCa. Two of the authors performed a marginal mandibular resection. One year later, the patient developed a recurrence over the resected area, requiring segmental mandibulectomy.

Clinical Implications. This case report demonstrates that recurrent primary malignancy can masquerade as benign peri-implant complications. A high degree of vigilance is required in the follow-up of patients with previous cancer or premalignant lesions.

Key Words: Dental implants; oral carcinoma; oral lichen planus

Abbreviations: CT: Computed tomography • OLP: Oral lichen planus • SCCa: Squamous cell carcinoma






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