Gingival peripheral odontoma in a child: Case report of an uncommon lesion

Ji Hyun Kwon, Young Ah Cho, Hong Keun Hyun, Teo Jeon Shin, Young Jae Kim

Department of Oral Pathology, School of Dentistry, Seoul National University, Seoul, South Korea.
Department of Pediatric Dentistry, School of Dentistry, Seoul National University, Seoul, South Korea.

DOI: 10.4236/ojst.2013.31020                

Abstract

Odontomas are defined as hamartomas of odontogenic origin. They are composed of all dental tissues are represented, occurring in a more or less disorderly pattern. Intraosseous (central) odontomas are the odontogenic tumors of greatest incidence. Otherwise, odontomas arising in the extraosseous soft tissue, also known as peripheral odontoma, are extremely uncommon. This article presents a case of peripheral odontoma in a child referred to SNUDH for treatment. A 2-year-old girl was referred to The SNUDH regarding an asymptomatic nodule on the left maxillary buccal gingiva. Clinical examination revealed a 7 mm × 6 mm × 3 mm, sessile mucosal lesion on the buccal gingival between #62 and #63. The lesion was firm on palpation and covered with an intact non-ulcerated mucosa. There was no other mucosal pathology. Under N₂O-O₂ inhalation sedation, an excisional biopsy of the lesion was performed. The diagnosis was peripheral odontoma. Summary: Odontoma in an extraosseous location represents a challenge for diagnosis. This article reports a case of peripheral odontoma and its clinical presentation, histological evaluation and treatment. A 2-year-old girl reported a firm asymptomatic nodule on left maxillary buccal gingival. The procedures for diagnosis included intraoral examination, excisional biopsy and histological analysis. The diagnosis was peripheral odontoma. Peripheral odontoma is rare and the differential diagnosis with other gingival masses is rather difficult and must include inflammatory and reactive processes. The definitive diagnosis is based on microscopic features.

Keywords

Peripheral Odontoma; Soft Tissue Odontoma

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	De Fátima Bernardes, V., de Miranda Cota, L.O., de Oliveira Costa, F., Mesquita, R.A., Gomez, R.S. and Aguiar, M.C.F. (2008) Gingival peripheral odontoma in a child: Case report of an uncommon lesion. Brazilian Journal Oral Sciences, 7, 1624-1626.
[2]	Giunta, J.L. and Kaplan, M.A. (1990) Peripheral, soft tissue odontomas: Two case reports. Oral Surgery, Oral Medicine, Oral Pathology, 69, 406-411. doi:10.1016/0030-4220(90)90312-G
[3]	Junquera, L., de Vicente, J.C., Roig, P., Olay, S. and Rodríguez-Recio, O. (2005) Odontoma intraóseo erupcionado: Una infrecuente patología Intraosseus odontoma erupted into the oral cavity: An unusual pathology. Pathology, 10, 248-251.
[4]	Ide, F., Obara, K., Mishima, K., Saito, I., Horie, N., Shimoyama, T., et al. (2005) Peripheral odontogenic tumor: A clinicopathologic study of 30 cases. General features and hamartomatous lesions. Journal of Oral Pathology & Medicine, 34, 552-557.
[5]	Ide, F., Mishima, K., Saito, I. and Kusama, K. (2008) Rare peripheral odontogenic tumors: Report of 5 cases and comprehensive review of the literature. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 106, e22-e28. doi:10.1016/j.tripleo.2008.05.064
[6]	Silva, A., Carlos-Bregni, R., Vargas, P., de Almeida, O. and Lopes, M. (2009) Peripheral developing odontoma in newborn. Report of two cases and literature review. Medicina Oral Patologia Oral y Cirugia Bucal, 14, e612-e615. doi:10.4317/medoral.14.e612