cysts in orofacial regions

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cysts in orofacial regions cysts in orofacial regions introduction cyst: is defined as a pathological cavity which may or may not be lined by epithelium and is filled with solid, semi solid or gaseous material . odontogenic cyst: a cyst in which lining of lumen is derived from epithelium produced during tooth development. mechanism of cyst formation proliferation of the epithelial lining fluid accumulation within the cyst cavity bone resorption 1.true cysts: that which is lined by epithelium e.g: dentigerous cyst, radicular cyst. 2.pseudo cysts: not lined by epithelium, e.g: solitary bone cyst , aneurysmal bone cyst classification of cysts of the orofacial region based on the world health organization classification epithelial cysts a ) odontogenic cysts 1) developmental odontogenic cysts keratocyst dentigerous cyst (follicular cyst) eruption cyst lateral periodontal cyst gingival cyst of adults 2) inflammatory odontogenic cyst radicular cyst (apical and lateral) residual cyst b ) non-odontogenic cysts …

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$ethods: marsupialization (decompression) enucleation enucleation and packing enucleation and primary closure enucleation and primary closure with reconstruction/bone grafting. marsupialization (decompression) creating a surgical window in the wall of the cyst, and evacuation of the cystic contents. decreases intracystic pressure promotes shrinkage of the cyst and bone fill. indications of marsupialization age: in a young child, with developing tooth germs,where enucleation would damage the tooth buds.in the elderly, debilitated patient, marsupialization, is less stressful and a reasonable alternative. proximity to vital structures: when proximity of the cyst to vital structures, could create an oronasal or oroantral fistula, injure neurovascular structures or damage vital teeth, then marsupialization should be considered. size of cyst: in very large cysts, where enucleation, could result in a pathological fracture, marsupialization,can be accomplished, through a more limited bony opening. enucleation enucleation allows for the cystic cavity to be covered by a mucoperiosteal flap and the space fills …$

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graphical examination. usually extend in anteroposterior direction. large mandibular cysts deflect the neurovascular bundle into an abnormal position. neuropraxia may associated with infected cyst (when tension is relieved, with spontaneous discharge of pus via a sinus tract or surgical drainage, sensation returns to normal). radiological features unilocular or multilocular radiolucency with well defined border and some times associated with sclerotic margin cyst contents (aspirate) white, kreamy suspention (consist mainly from keratin), which has an appearance of pus, but without an offensive smell. these suspension charectarized by that the amount of protein content will be less than that present in the other cysts (total protein will be found to be below 4 gm/100 ml). recurrence : high tendency to recur. the recurrence rate about 5 to 62 % with most occurring in the first 5 years. possible reasons reported for high recurrence rate : scolloped margins presence of daughter cysts cystic …

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t recurrence. resection.(in case of multiple recurrence) dentigerous cyst (follicular cyst) it originates by accumulation of fluid between the reduced enamel epithelium and the tooth crown, so its always associated with the crown of a unerupted tooth incidence: the dentigerous cyst is the most common type of developmental odontogenic cyst, making up about 20 percent of all epithelium lined cysts of the jaws. the most common age periods for diagnosis are the first, second, third decades slight predilection for the males and the prevalence is higher for whites than for blacks. most common sites; mandibular third molars , maxillary canine, maxillary third molar and mandibular second premolar. clinical features: often it is the pronounced facial asymmetry(if it is large) . pain may be a presenting symptom(infected) eggshell crackling, in large cysts teeth displacement root resorptions radiologically : the dental follicle may expand around the unerupted or impacted tooth in three …

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oth is destroyed. most of the cysts are smaller than 1 cm in size and are seen to be present between the cervical margin and apex of the root. treatment: enucleation (attempts should be made to avoid sacrificing the associated tooth). calcifying epithelial odontogenic cyst (gorlin cyst) uncommon , no sex predilection. more common in children and young adults. site: most common site of occurrence is in the anterior part of the mandible. clinical features : usually discovered accidently on radiographic examination. swelling is the most frequent complaint, rarely there is pain. two variant present : peripheral and intraosseous variant, the latter produce a hard bony expansion and may be fairly extensive . in a few cases displacement of the teeth may be seen. radiological features : mixed radiolucency with well defined and some times irregular margine ,may be unilocular or multilocular. the cyst may be associated with a complex …

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cysts in orofacial regions cysts in orofacial regions introduction cyst: is defined as a pathological cavity which may or may not be lined by epithelium and is filled with solid, semi solid or gaseous material . odontogenic cyst: a cyst in which lining of lumen is derived from epithelium produced during tooth development. mechanism of cyst formation proliferation of the epithelial lining fluid accumulation within the cyst cavity bone resorption 1.true cysts: that which is lined by epithelium e.g: dentigerous cyst, radicular cyst. 2.pseudo cysts: not lined by epithelium, e.g: solitary bone cyst , aneurysmal bone cyst classification of cysts of the orofacial region based on the world health organization classification epithelial cysts a ) odontogenic cysts 1) developmental odontogenic …

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