ORTHOKERATINIZED ODONTOGENIC CYST – KERATINIZED BUT NOT A KERATOCYST
– An orthokeratinized odontogenic cyst (OOC) is a rare dental cyst, which has recently been separated from the odontogenic keratocyst (OKC) in the WHO classification. OOC has previously been described as a variant of OKC and there has not been any consensus so far to distinguish between follow-up of patients with OOC and OKC despite having different prognosis.
– A 17-year-old man had symptoms from a third molar in the lower jaw. This, as well as an incidentally discovered cyst relating to the tooth, was removed during surgery. Pathological examination showed OOC.
– It is important to distinguish between OKC and OOC as OOC is less locally destructive and has significantly lower recurrence rate. At present, no distinction is generally made between follow-up for OKC and OOC, and patients therefore often receive the same comprehensive follow-up. However, it would be more efficient for patients with OOC to undergo fewer follow-ups for a shorter period.