The nof in the extragnathic skeleton has a characteristic radiographic appearance, is typically asymptomatic and has a variable histologic makeup. The most striking and welcome change is the return of the odontogenic cysts. Radiologic and pathologic characteristics of benign and. Glandular odontogenic cyst the glandular odontogenic cyst goc is a rare lesion, accounting for just 0. The pathogenesis of the three common forrns of odontogenic cyst is discussed. Odontogenic and non odontogenic cysts 2 of 3 amr elbolok. There are approximately six different types of these cysts. Periapical radiolucencies this website provides over 0 free medical books and more for all students and doctors this website the best choice for medical students during and after learning medicine. A dentigerous cyst is the most common cause of pericoronal radiolucency which is associated with impacted teeth 3. Most are harmless, but they should be removed when possible because they occasionally may change into malignant growths, become infected, or obstruct a gland. Ppt odontogenic cysts and tumors powerpoint presentation. Pseudotumors and cysts odontogenic x non odontogenic.
The membrane of this type of cyst comes from the epithelial cells that produce the teeth. View non odontogenic cyst ppts online, safely and virus free. This classification is simple and very similar to that used in the 2nd edition table 1. Differentiation of periapical granulomas and cysts by. Differential diagnosis of oral maxillofacial lesions. It strikes distinct age groups, with an average patient age being 50 years. Osteosarcomas occur more commonly in the appendicular than axial skeleton. Intrabony cysts are most common in the jaws, because the mandible and maxilla are the only bones with epithelial. All other inflammatory cysts are intraosseous except salivary cysts and parasitic cysts 58. Extramedullary plasmacytomas arise outside of bone, are typically mucocutaneous in location and occur most commonly in the mouth, on the feet or trunk and in the ears. Nonodontogenic cyst article about nonodontogenic cyst by. The glandular odontogenic cyst goc is a rare lesion, accounting for just 0.
Odontogenic cyst and non odontogenic cyst free download as powerpoint presentation. Malignant transformation of odontogenic cysts is estimated to be between 0. Most commonly dentigerous cyst involves lower 3rd molar mandibular 2. An abnormal membranous sac in the body containing a gaseous, liquid, or semisolid substance. Glandular odontogenic cyst goc is a rare developmental lesion that is considered a distinct entity because of its uncommon histopathological characteristics. Odontogenic and nonodontogenic tumors of the jaws are a relatively rare and heterogeneous group of benign and malignant neoplasms, hamartomas, and other bonerelated lesions that demonstrate great variability in etiology, biologic behavior, and clinical significance. Dentigerous cyst or follicular cyst is a type of odontogenic cyst which encloses the crown of an unerupted tooth and is attached to the amelocemental junction and is the second most common. Odontogenic cysts, nonodontogenic cysts j craniofac surg 2011. Among the 2275 oral biopsy specimens retrieved, we found 194 cases 8. The calcifying epithelial odontogenic cyst ceoc is a developmental odontogenic cyst, which was first categorized as a distinct entity by gorlin in 1962. The bone cysts are included and, ironically, given. While rare, the nof has been reported in the mandible. Teeth develop from budlike invagination of ectodermal lining of primitive oral cavity epithelium.
Adenomatoid odontogenic tumor is a hamartomous benign neoplasia of odontogenic origin. Ppt odontogenic cysts and tumors powerpoint presentation free to download id. Traumatic inflammatory non odontogenic cysts the most common cause leading to the such cysts are physical or mechanical trauma. This article aims to discuss the clinical features, radiological assessment, histopathology and management of a variety of odontogenic cysts. Magnetic resonance imaging mri can differentiate between periapical apex of a tooth root cysts and granulomas inflammations usually caused by infections. Odontogenic keratocyst okc is a common developmental odontogenic cyst affecting the maxillofacial region that arises from the dental lamina. Very few cases of aot associated with dentigerous cyst dc have been reported till date, most cases are in females and have a striking tendency to. Differential diagnosis of oral maxillofacial lesions differential diagnosis of oral maxillofacial lesions1. Mostly in the anterior part of the mandible 8087% as a painless unilocular or multilocular radiolucency. Odontogenic cyst is a cyst in which lining of lumen is derived from epthelium produced during tooth development non odontogenic cyst a cyst that arise from epithelial inlusion or entrapments in the lines of closure of developing facial process during embryonic period of life 4. Abstract adenomatoid odontogenic tumour aot, a tumour composed of odontogenic epithelium, is an uncommon tumour of odontogenic origin that accounts for only 2. Nonodontogenic jaw cysts are cysts arising from epithelial remnants of embryonic ducts left behind after embryonal facial and jaw development.
Adenomatoid odontogenic tumor aot is a rare odontogenic tumor which is often misdiagnosed as odontogenic cyst. Other cysts of the jaws are termed non odontogenic cysts. Examining frequency data of the most common odontogenic cysts. Malignant transformation of an odontogenic cyst in a. Proper diagnosis of these cysts immeasurably aids in adequate nonmutilating treatment. Non odontogenic cysts form from tissues other than those involved in tooth development, and consequently may contain structures such as epithelium from the nose. Pdf calcifying epithelial odontogenic cyst of the mandible. Pdf cenelerin nonodontojenik kistleri nonodontogenic. It appears mostly in young patients and females, the maxillary. Maxillary sinus disease of odontogenic origin pdf free. Cysts and odontogenic neoplasms 162 apical cyst periapical cyst radicular cyst, root end cyst epithelial lined jaw cyst found as radiolucencies at the end of roots of non vital teeth. Simple solitary bone cyst aneurismal bone cyst stafne cyst. An odontogenic cyst is a membranebound sac that can be empty or filled with a viscous substance or fluid. The nasolabial cyst is a rare non odontogenic cyst that develops within the skin adjacent to the ala of nose.
Eighty percent occur in the mandible, particularly. It has morphological similarities to other lesions, which makes its diagnosis challenging for pathologists. Maxillary lesions are also localized in the anterior segment. Ameloblastoma arising from a dentigerous cysta case. To guarantee the most reliable epidemiologic profile for the odontogenic cysts, nonodontogenic cysts. Odontogenic cysts are closed sacs, and have a distinct membrane derived from rests of odontogenic epithelium. Odontogenic cyst free download as powerpoint presentation. Radiologic and pathologic characteristics of benign and malignant lesions of the mandible. Nasopalatine duct cyst median palatine cyst nasolabial cyst globulomaxillary cyst ii. Their origin may be odontogenic or non odontogenic. A recent case of a calcifying and keratinizing odontogenic cyst that initially manifested as a facial mass exemplifies the need for adequate clinical and histological diagnosis to ensure appropriate treatment.
It also highlights the reclassification of odontogenic keratocysts to keratocystic odontogenic tumours. An abnormal space within tissue lined by epithelium. Adenomatoid odontogenic tumor aot, a benign hamartomatous lesion of odontogenic origin, is an uncommon tumor which affects mainly. The adobe flash plugin is needed to view this content. The okc is distinctive among jaw cysts given its tendency toward recurrence and aggressive clinical. Examples of some lesions include odontogenic keratocysts, radicular cysts, ameloblastoma, odontoma, cementoma, calcifying odontogenic cyst, and ossifying.
Odontogenic cyst and non odontogenic cyst epithelium. The periapical radicular cyst is the most common odontogenic cyst and results from inflammation secondary to caries or other entities. The non ossifying fibroma nof is a benign, non neoplastic lesion most commonly seen in the metaphyses of the long bones in children. A rare, developmental odontogenic cyst that can show aggressive behavior. Because they are asymptomatic, dentigerous cysts are usually diagnosed on routine dental radiographs. Cysts that arise from tissues that would normally develop into teeth are referred to as odontogenic cysts. Chapter 21 odontogenic and nonodontogenic tumors of the jaws introduction. Odontogenic cyst are a group of jaw cysts that are formed from tissues involved in odontogenesis tooth development. The diagnosis of a dentigerous cyst is based on a combination of radiographic and histopathological features 4.
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