Padmanabhan M Y, Pandey R K, Aparna R
Department of Pediatric Dentistry, Sri Ramakrishna Dental College and Hospital, Coimbatore, Tamil Nadu, India;
Rom J Morphol Embryol. 2013;54(4):1153-6.
Tooth development may be hampered following traumatic injuries to maxilla or mandible. The developmental deviations that occur in a tooth bud in the line of a jaw fracture range from agenesis to hamartomatous proliferation. Odontomas are benign odontogenic hard tissue tumors, which are hamartomas characterized by slow growth and non-aggressive behavior. 'Erupted odontoma' is a term used to specifically denote odontomas, which are exposed into the oral cavity. These are rare entities with only 25-30 cases being reported so far in the dental literature.
This clinical report is pertaining to a rare case of an erupted odontoma in an adolescent patient which was presenting as a hard tissue outgrowth along with an extra-oral sinus in the posterior mandibular region. The surgical excision of the odontoma along with the associated malformed teeth resulted in resolution of pain and sinus discharge associated with this lesion.
Erupted odontomas need to be considered in the differential diagnosis of hard tissue projections or outgrowths in the site of past maxillofacial injuries. Surgical excision of these lesions enable resolution of patient symptoms associated with this condition as evidenced in the present case and in other cases cited in the literature. The erupted odontoma attached to malformed molars and presenting with signs and symptoms suggestive of osteomyelitis is a rare combination of developmental aberrations following maxillofacial injury.
上颌骨或下颌骨遭受创伤性损伤后，牙齿发育可能会受到阻碍。颌骨骨折线上牙胚出现的发育异常范围从牙缺失到错构瘤样增生。牙瘤是一种良性牙源性硬组织肿瘤，属于错构瘤，其特点是生长缓慢且无侵袭性。“萌出性牙瘤”是一个专门用于指代暴露于口腔的牙瘤的术语。这些是罕见的病例，迄今为止牙科文献中仅报道了25 - 30例。
本临床报告涉及一名青少年患者罕见的萌出性牙瘤病例，该牙瘤表现为下颌后部区域的硬组织增生以及口外窦道。牙瘤连同相关畸形牙的手术切除使与该病变相关的疼痛和窦道排液症状得以缓解。
在鉴别诊断既往颌面损伤部位的硬组织突出或增生时，需要考虑萌出性牙瘤。如本病例及文献中引用的其他病例所示，这些病变的手术切除能够缓解患者与此病症相关的症状。附着于畸形磨牙且伴有提示骨髓炎体征和症状的萌出性牙瘤是颌面损伤后发育异常的罕见组合。
