Term
| Where do odontogenic cysts originate? |
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Definition
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Term
| Where do nonodontogenic cysts originate? |
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Definition
| not from tooth origin, originates from lines of function |
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Term
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Definition
| a sac or cavity lined with epithelium an enclosed in connective tissue |
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Term
| What are cysts filled with? |
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Definition
| fluid or semisolid material |
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Term
| How do cysts appear in bone? |
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Definition
| well circumcised radiolucency |
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Term
| How are cysts classified? |
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Definition
| odontogenic (tooth development) or nonodontogenic |
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Term
| Where can the epithelium that forms odontigenic cysts come from? (4) |
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Definition
1.enamel organ
2.reduced enamel epilthelium
3.epithelial rests of malassez
4.residual lamina dura |
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Term
| How are odontogenic cysts classified? |
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Definition
According to one of the following...
1.location
2.cause
3.origin of epithelium |
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Term
| What are some intraosseous cysts? (4) |
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Definition
1.dentigerous or follicular cysts
2.primordial cysts
3.odontogenic keratocyst
4.lateral periodontal cysts |
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Term
| What are some examples of extraosseous cysts? (2) |
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Definition
1.eruption cysts
2.gingival cysts |
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Term
| Where does a dentigerous or follicular cyst form? What is the lumen filled with? |
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Definition
-forms around the crown of an unerupted tooth
-lumen filled with fluid |
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Term
| Where does the epithelium from a dentigerous or follicular cyst come from? How does it appear radiographically? |
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Definition
-REE
-well-defined, unilocular radiolucency |
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Term
| What does a Dentigerous or Follicular Cyst cause? |
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Definition
-facial asymmetry
-displacement of teeth
-root resorption of adjacent teeth |
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Term
| What are some potential complications of Dentigerous or Follicular Cyst? |
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Definition
| development of an ameloblastoma, epidermoid carcinoma, or mucoepidermoid carcinoma |
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Term
| What is the treatment of Dentigerous or Follicular Cyst? |
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Definition
| complete removal of the cyst and usually tooth too |
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Term
| What is an eruption cyst? |
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Definition
| Type of dentigerouscyst associated with an erupting tooth |
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Term
| What happens with an eruptive cyst? How does it look radiographically? |
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Definition
-tooth erupts through the cyst
-does not show up radiographically because it is in the soft tissue |
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Term
| What is the treatment of an eruption cyst? |
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Definition
| no treatment necessary, tooth will erupt through it |
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Term
| Where does a primordial cyst erupt? |
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Definition
| where a tooth is supposed to be |
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Term
| What does a primordial cyst arise from? |
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Definition
| degeneration of the enamel organ |
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Term
| How does a primordial cyst appear radiographically? |
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Definition
| well-defined, unilocularor multilocular radiolucency |
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Term
| Wat is the treatment of a primordial cyst? |
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Definition
| treatment involves complete removal |
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Term
| How thick is the epithelial lining of the lumen with a Odontogenic Keratocyst? |
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Definition
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Term
| What are some symptoms of Odontogenic Keratocyst? |
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Definition
| Expansive lesion causing swelling, tooth resorptionand movement, pain |
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Term
| What are some neurological manifestations of Odontogenic Keratocyst? |
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Definition
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Term
| How do Odontogenic Keratocyst appear radiographically? |
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Definition
| can appear as a well-defined unilocularor multilocularradiolucency |
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Term
| What is the treatment for Odontogenic Keratocyst? Why is careful followup needed? |
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Definition
-wide surgical removal
-recurrence common because it expands through the trabeculaeand easily fragments because it is so thin |
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Term
| What do periodontal cysts arise from? |
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Definition
| remnants of epithelial rests of Malassezin the PDL |
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Term
| Where can periodontal cysts arise? |
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Definition
-lateral aspect of the root (Lateral Periodontal Cyst)
-apex (Periapicalor RadicularCyst) |
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Term
| How do periodontal cysts appear radiographycally? |
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Definition
| well-defined radiolucency |
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Term
| Why do periapical or periodontal cysts develop? |
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Definition
| as a result of infection from the pulp chamber –chronic condition, tooth non-vital |
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Term
| What causes lateral periodontal cysts? |
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Definition
| unknown cause, tooth tests vital |
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Term
| What is the treatment for all periodontal cysts? |
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Definition
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Term
| What is the most common cyst? |
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Definition
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Term
| When do residual cysts form? |
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Definition
| Forms when part of a periapical cyst is left behind |
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Term
| How do residual cysts look radiographically? |
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Definition
| well-circumscribed radiolucency at the site of the extraction |
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Term
| How are residual cysts treated? |
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Definition
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Term
| What are three types of gingival cysts? |
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Definition
1.gingival cysts of newborns
2.palatal cysts of newborns
3.gingival cysts of adults |
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Term
| Where do gingival cysts of nerborns form? |
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Definition
| Remnants of the dental lamina degenerate and form cysts, on alveolar ridge where teeth would be |
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Term
| What are gingival cysts of newborns filled with? What do they look like? |
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Definition
| Filled with keratin so appear as multiple white nodules |
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Term
| What are two types of palatal cysts of newborns? |
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Definition
1.Epstein's pearls
2.Bohn's nodules |
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Term
| What are epsteins pearls? |
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Definition
| epithelium entrapped during fusion of the palate, appear along the palatine raphe |
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Term
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Definition
| minor salivary glands appear as firm, small, white nodules in groups anywhere in the hard palate |
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Term
| Do gingival cysts need treatment? |
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Definition
| no, they usually resolve without treatment |
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Term
| What is a gingival cysts of adults? |
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Definition
-arise from dental lamina
-similar to periodontal cyst in site and behavior
-appears aw swelling attached to gingiva of interdental papillae
-no radiographic manefestation
-surgical removal |
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Term
| When do Nonodontogenic Cysts occur? |
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Definition
| Occur when epithelium becomes entrapped during fusion of embryonic processes |
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Term
| What is another name for nonodontogenic cysts? Why? |
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Definition
| fissural cysts because they occur along the lines of fusion |
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Term
| Where do nonodontogenic cysts form? |
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Definition
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Term
| WHat are 4 intraosseous cysts? |
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Definition
1.nasopalatine duct cyst
2.median palatal cyst
3.globulomaxillary cyst
4.median mandibular cyst |
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Term
| What are some examples of extraosseous cysts? (5) |
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Definition
–NasolabialCyst
–Lymphoepithelial(BranchialCleft) Cyst
–Epidermal Cyst
–DermoidCyst
–ThyroglossalDuct Cyst |
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Term
| Nasopalatine/incisive canal cyst- why does it form? Where are they located? how are they found? What do the look like radiographically? Treatment? |
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Definition
-Forms from remnants of the nasopalatineduct
•Located within the incisive canal or incisive papilla
•Most are asymptomatic, found on routine radiographs
•Radiographically appears as a well-defined, heart shaped radiolucency in the midline
•Treatment –surgical removal |
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Term
| Median palatine cyst- why does it form? Where is it found? Radiographically? Treatment? |
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Definition
•Forms from epithelium trapped during fusion of the palatine processes
•Found in the midline of the palate, more posterior than the NasopalatineCyst
•Radiographicallyappears as a well-defined, unilocularradiolucency
•Treatment –surgical removal |
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Term
| What is the debate with Globulomaxillary Cysts? |
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Definition
| Debate is this a fissuralcyst? Epithelium trapped during fusion or is it of odontogenicorigin? |
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Term
| Globulomaxillary Cysts- where are they found? How do they appear radiographically? Treatment? |
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Definition
•Found between the maxillary lateral and canine
•Radiographicallyappears as a well-defined upside down pear-shaped radiolucency
•Treatment-surgical removal |
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Term
| Median Mandibular Cyst- Location? Treatment? Radiographically? |
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Definition
•Found in the midline of the mandible
•Radiographically appears as a well-defined radiolucency below the apices of the incisors
•Treatment –surgical removal |
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Term
| Nasolabial Cyst- Origin? Location? appearance? Radiographic evidence? Treatment? |
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Definition
•Epithelium believed to come from remnants of the nasolacrimal duct
•Found at the junction of the globular, lateral nasal, and maxillary processes
•Clinically appears as a swelling in the mucolabial fold in the area of the canine fossa
•No radiographic evidence since is in soft tissue
•Treatment –surgical removal |
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Term
| Lymphoepithelial (Branchial Cleft) Cyst- Cause? Location? Appearance? Treatment? |
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Definition
•Arises from epithelium (from branchial arches)trapped in a lymph node during development
•Commonly found in the major salivary glands
•Intraorally, floor of the mouth and lateral borders of the tongue most common
•Extraorally, lateral aspect of the neck most common
•Clinically appears as a pinkish-yellow nodule (intraoral) or a moveable mass on the neck (extraoral)
•Treatment –surgical removal, carcinoma can develop if only drained |
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Term
| Where do Epidermoid cysts arise from? Where are the commonly found? Appearance? |
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Definition
-Arise from epithelium of the hair follicle and resemble the epidermis
–Occur on the skin of the face, neck, and scalp
–Present as normal-colored nodules
–Intraoral appear as yellow or normal-colored nodules
–Lumen filled with keratin |
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Term
| Where do Dermoid cysts arise? Where are they found? |
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Definition
-in the cyst wall hair follicles, sebaceous glands, and sweat glands
–Lumen filled with keratin
–Found in oral cavity in the floor of the mouth and may protrude into the floor or present as a submental swelling
–If also include teeth, bone, muscle |
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Term
| What is another name for dermoid cysts? |
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Definition
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Term
| How are epidermoid and dermoid cysts treated? |
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Definition
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Term
| Thyroglossal Tract Cyst- Origin? Symptomatic? Location? Treatment? Recurrence? |
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Definition
•Develops from remnants of the duct that served as the path for the thyroid gland to migrate from the oral cavity to the neck
•Present as asymptomatic midline swelling
•Most occur below the hyoid bone
•Treatment –surgical removal of the cyst, the tract connecting the cyst to the foramen cecum, and the central portion of the hyoid bone
•Even then, 5% recurrence rate and some cases have carcinoma arise |
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