Orthokeratinized Odontogenic Cyst: A Case Series with Clinicopathologic Variation
Mandakini Mandale
Department of Oral Pathology and Microbiology, Government Dental College and Hospital, Chhatrapati Sambhajinagar, Maharashtra, India.
Vaishnavi Marge
*
Department of Oral Pathology and Microbiology, Government Dental College and Hospital, Chhatrapati Sambhajinagar, Maharashtra, India.
Jayanti Humbe
Department of Oral Pathology and Microbiology, Government Dental College and Hospital, Chhatrapati Sambhajinagar, Maharashtra, India.
Vaishali Nandkhedkar
Department of Oral Pathology and Microbiology, Government Dental College and Hospital, Chhatrapati Sambhajinagar, Maharashtra, India.
Savita Wagh
Department of Oral Pathology and Microbiology, Government Dental College and Hospital, Chhatrapati Sambhajinagar, Maharashtra, India.
Monika Kajalkar
Department of Oral Pathology and Microbiology, Government Dental College and Hospital, Chhatrapati Sambhajinagar, Maharashtra, India.
*Author to whom correspondence should be addressed.
Abstract
Orthokeratinized Odontogenic Cyst (OOC) is a rare developmental odontogenic cyst, accounting for approximately 1% of all odontogenic cysts and 10% of all keratinizing odontogenic jaw cysts. The 2017 WHO classification considered OOC as a distinct entity. It is characterized by an Orthokeratinized stratified squamous epithelial lining, a benign nature, and a low recurrence rate of less than 2%. Unlike OKC, OOC lacks aggressive behaviour, showing minimal proliferative activity. Radiologically, OOCs often present with buccolingual expansion and cortical bone destruction, but their growth pattern is less invasive than that of OKC. Due to its favourable prognosis and low recurrence, OOCs should be differentiated from OKC for its appropriate diagnosis & management.
Keywords: Orthokeratinized odontogenic cyst, odontogenic cysts, odontogenic keratocyst, WHO