orthokeratinized odontogenic cyst

Only those reports of OOCs that occurred. Orthokeratinized Odontogenic Cyst OOC is a devel opmental odontogenic cyst characterised by a lining of orthokeratinized stratiﬁed squamous epithelium 1.

Ortho Keratinized Odontogenic Cyst Of Mandible A Rare Case Report Semantic Scholar

The databases searched were the PubMed interface of MEDLINE and LILACS.

. OOCs were first described in 1927 by Schultz 2 as a variant of odontogenic keratocysts now known as keratocystic odontogenic tumours KCOTs 3. Orthokeratinized Odontogenic Cyst OOC is a rare developmental odontogenic cyst which was considered in the past to be a variant of Odontogenic keratocyst OKC later renamed as keratocystic odontogenic tumor KCOT. Orthokeratinized odontogenic cyst OOC is a rare intraosseous cyst characterized by an orthokeratinized epithelial lining and minimal clinical aggressiveness 1.

Orthokeratinized Odontogenic Cyst OOC is a rare developmental odontogenic cyst which was considered in the past to be a variant of keratocystic odontogenic tumor KCOT. Orthokeratinized odontogenic cyst OOC is a rare developmental odontogenic cyst characterized by orthokeratinized stratified squamous epithelial lining 1. Also heterogenous group of lesions such as nasopalatine duct cyst.

Histologically OOC is characterized by a 4-8-cell-layer-thick orthokeratinized epithelial lining with prominent granulosum and low cuboidal basal cells. Orthokeratinized odontogenic cyst OOC a newly designated entity of odontogenic cysts is an intraosseous jaw cyst that is entirely or predominantly lined by orthokeratinized squamous epithelium. OOC had been previously coded as odontogenic keratocyst OKC and was termed as orthokeratinized variant of OKC 2 3 4.

While KCOT epithelial lining is thick parakeratinized with the basal cells exhibiting typical palisading of the nuclei. Orthokeratinized odontogenic cyst OOC is a developmental cyst of odontogenic origin and was initially defined as the uncommon orthokeratinized variant of. The keratocystic odontogenic tumor which was previously referred to as odontogenic keratocyst must be differentiated from other odontogenic cysts because of its aggressive behavior.

Inflammatory such as periapical radicular cyst. Orthokeratinized odontogenic cyst OOC is a relatively uncommon developmental cyst comprising about 10 of cases that had been previously coded as odontogenic keratocysts OKCs. Iatrou Department of Oral Pathology.

In 2005 it was classified as a distinct entity. Heterogenous group of lesions classified into three groups. Neoplastic such as keratocystic odontogenic tumor.

Odontogenic keratocyst is a cyst of dental origin with an aggressive clinical behavior having high recurrence rate. Although both the first two editions of the World Health Organizations WHO histological classification of odontogenic tumours. Developmental such as lateral periodontal cyst.

It has been categorized as a subtype of odontogenic keratocyst OKC. The aim of this study was to report a large series of OOC to substantiate its clinicopathologic profiles and to investigate PTCH1 mutations in OOCs. OOC differs in many aspects from developmental odontogenic cysts especially dentigerous cyst and OKCs.

In 1992 World Health Organization WHO 1992 has defined Orthokeratinized odontogenic cyst OOC as the uncommon orthokeratinized type of odontogenic keratocyst OKC. 16 In 1981 Wright 2 reported 59 cases of what he then termed orthokeratinized variant of OKC which showed little clinical aggressiveness. Odontomas are hamartomatous lesions composed of mature enamel dentin and pulp and may be compound or complex depending on the extent of morphodifferentiation or on their resemblance to normal teeth.

Orthokeratinized odontogenic cyst OOC is an uncommon odontogenic cyst. Panos CHRISTOPOULOS Fotios TZERBOS Evangelia PIPERI Georgios KAMPEROS Alexandra SKLAVOUNOU Department of Oral and Maxillofacial Surgery Head. They were ﬁrst identiﬁed by W right.

In 1981 Wright identified it owing to its different histology and relatively low recurrence rate as Orthokeratinized variant of odontogenic keratocyst OKC. The orthokeratinized odontogenic cyst OOC is a developmental odontogenic cyst relatively rare arising from the cell rests of the dental lamina3 It was first described by Schultz in 1927 as an orthokeratinized variant of the formerly called OKC today known as the KCOT4 In 1992 World Health Organization. OOC should be histopathologically differentiated from OKC which has a higher recurrence rate and lower malignant potential.

Keratocystic odontogenic tumors can be seen at any age but are most common between 10 and 40 years of age in males and within the posterior mandible. The orthokeratinized odontogenic cyst OOC 1 was first clearly identified as an orthokeratinzed variant of the odontogenic keratocyst by Wright in 1981 2 owing to its different histopathology and reduced likelihood to recur. The aims of the review were to evaluate the principal clinical and conventional radiographic features of orthokeratinized odontogenic cyst OOC by systematic review SR and to compare the frequency of OOC between four global groups.

The Photomicrograph Shows Cystic Lumen Lined By A Continuous Layer Of Download Scientific Diagram