ch 5 Developmental disorders Oral Path
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Created by:
cassiedh on October 4, 2011
Subjects:
Description:
Odontogenic cysts
Classes:
NTCC Dental Hygiene 13, SLCC DH
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86 terms
Terms | Definitions |
|---|---|
 a developmental disorder is a failure during the process of _____ ____ and ______ into various tissues and structures | cell division differentiation |
| what type of disorder is caused by an abnormality in genetic makeup? | inherited disorder (Shaking fist @ parents! Stupid genetics gotta ruin all the fun) |
| what type of disorder is present at birth? | congenital |
| what are the two types of congenital disorders? | inherited (genetic) developmental |
| what week does face development start? | third week |
| what branch of the face is above? below? | frontal process (above) first branchial arch (below) |
| what three processes does the first branchial arch divide into? | TWO maxillary processes mandibular process |
| Two ____ develop on the frontal process. They divide the frontal process into three parts which are??? | PITS median nasal process right lateral nasal process left lateral nasal process |
| what does the premaxilla form from? | globular process |
| what forms from the maxillary process? | lateral palatine processes |
| where does the BODY of the tongue develop from? | FIRST branchial arch |
| where does the BASE of the tongue develop from? | SECOND and THIRD branchial arches |
| t/f the right maxillary process forms the left lateral palatine process | FALSE! (Right forms right and left forms left..duh) |
| what is odontogenesis | tooth formation |
| what week does odontogenesis take place? | fifth week |
| odontogenesis involves the ____ and the _____ | ectoderm and ectomesenchyme |
| teeth formation begins with the formation of a band of ectoderm in each jaw called??? | primary dental lamina |
| how many parts does a tooth germ have? | 3 |
| what are the three parts of the tooth germ? | enamel organ dental papilla dental sac or follicle |
| what is the purpose of the enamel organ? | to produce ENAMEL (amelogenesis) |
| what is the purpose of the dental papilla? | forms DENTIN and DENTAL pulp |
| what is the 1st hard tissue in the mouth and when does it form? | dentin 5th month |
| what does the dental sac provide? | cells that form: Cementum periodontal ligament alveolar bone |
| t/f cementum is formed first | false (cementum is formed AFTER the crown is complete) |
| what is the name for cementum development? | cementogenesis |
| what shapes the root of the tooth? | Hertwig's Epithelial root sheath (HERs) |
| what induces the formation of root dentin? | Hertwig's Epithelial root sheath (HERs) |
| there is little cementum produced until there is an _____ of teeth, _____ and a _______ tooth | eruption occlusion functioning |
| what is the HERs responsible for? | root shape root dentin |
| what is it called when there is an extensive attachment of the tongue to the floor of the mouth? | ankyloglossia |
| what are three developmental soft tissue abnormalities? | ankyloglossia commissural lip pits lingual thyroid |
| what is defined as teeth that are fused to the alveolar bone; a condition especially common with retained deciduous teeth? | akylosed teeth |
| what is defined as a disposition in favor of something; preference | predilection |
| what is the embryonic invagination that becomes the oral cavity | stomodeum |
| what is the tx for ankyloglossia? | frenectomy |
| what are epithelium lined blind tracts located at the corners of the mouth? | commissural lip pits |
| t/f congenital lip pits are at the corners of the mouth | false! (midline of the vermillion border) |
| where is a lingual thyroid located? | area of FORAMEN CECUM (posterior to circumvallate papillae) |
| what is a smooth nodular mass posterior to the circumvallate papillae | lingual thyroid |
| what are the two types of classifications for developmental cysts | odontogenic (tooth origin) nonodontogenic (non tooth origin) |
| what are the four introsseous odontogenic cysts? | dentigerous cyst primordial cyst odontogenic keratocyst lateral periodontal cyst |
| what are the two extraosseous odontogenic cysts? | eruption cyst gingival cyst |
| what are the four intraosseous nonodontogenic cysts? | nasopalatine duct cyst median palatal cyst globulomaxillary cyst median mandibular cyst |
| what are the four exraosseous nonodontogenic cysts? | nasolabial cyst branchial cleft cyst epidermal cyst thyroglossal tract cyst |
| other than tooth related or non tooth related classifcation how else are developmental cysts classfied? (4 ways) | location cause origin (of epithelial cells) histologic appearance |
| where do intraosseous cysts occur? | within the bone |
| where do extraosseous cysts occur? | in soft tissue |
| cysts within the bone generally appear as ____-________ | well circumscribed |
| how do cysts within the bone appear on radiographs? | radiolucent |
| t/f cysts within the bone appear unilocular only | false (unilocular and multilocular) |
| what are two types of brachial cleft cysts? | cervical lymphoepthelial cyst intraoral lymphoepithelial cyst |
| what type of cyst forms around the CROWN of an UNERUPTED or developing tooth | dentigerous cyst |
| Dentigerous cyst aka? | follicular cyst |
| the epithelial lining originates with a dentigerous cyst from the reduced enamel epithelium after the crown has _______ and _______ | formed calcified |
| where are dentigerous cyst most commonly seen? | unerupted or impacted third molars |
| what would you call a well defined unilocular radiolucency around the crown of an unerupted or impacted tooth? | follicular cycst (dentigerous cyst) |
| what is the lumen of a dnetigerous cyst usually lined with? | cuboidal epithelium |
| what surrounds the lining of the lumen with a dentigerous cyst? | connective tissue |
| what is the tx for a dentigerous cyst? | removal |
| t/f a dentigerous cyst as the risk of cystic transformation into a neoplasm | true dat |
| what type of cyst is found in the soft tissue around the crown of an erupting tooth | eruption cyst |
| where does a primordial cyst take place? | in the place of a tooth (there is no tooth) |
| where is the most common place of a peimordial cyst? | THIRD MOLAR or POSTERIOR to third molar |
| t/f primordial cysts are most often seen in older adults who have previously extracted their third molars as young adults | FALSE! (most often in YOUNG ADULTS) |
| t/f primordial cysts can be unilocular OR multilocular | true |
| what is the lumen of a primordial cyst lined with? | stratified squamous epithelium |
| histologically what can a primordial cyst be? (2things) | odontogenic keratocyst lateral periodontal cyst |
| what is the tx for a primordial cyst? | surgical removal/biopsy |
| t/f primordial cysts have a high risk of recurrence | false (depends on the diagnosis, OKC=high rate of recurrence) |
| how is a OKC characterized? | histologic appearance |
| what cysts lumen contains perakeratin and is frequently recurrent | OKC |
| where is an OKC seen most often? | mandiubular third molar |
| t/f an OKC can move teeth and cause resorption | true (better believe it fooo!) |
| how thick is the epithelium lumen lining of an OKC? | 8-10 cell layers thick |
| t/f the surface of an OKC lumen is parakeratinized | true |
| radiographically what frequently appears as WELL DEFINED, MULTILOCULAR and RADIOLUCENT lesion | Odontogenic Keratocyst |
| what are the two tx for OKC? | surgical excision osseous curettage |
| what is a NONAGGRESSIVE cystic lesion lined by odontogenic epithelium | Calcifying Odontogenic Cyst (COC) |
| what closely resembles an ameloblastoma | COC (calcifying odontogenic cyst) |
| what cysts characteristic feature is called GHOST CELLS | COC (so small its a ghostly COC...poor guy) |
| what cyst is most often seen in mandibular cuspid and premolar areas? | lateral periodontal cyst (in the bone) and gingival cyst (on the gingiva) |
| what cyst is asymptomatic, unilocular or multilocular radiolucent lesion on the lateral surface of hte tooth root? | lateral periodontal cyst |
| t/f lateral periodontal cyst is most often seen in asian females | false (most often seen in males) |
| t/f a gingival cyst has the same type of lining as a lateral periodontal cyst but is located on the hard tissues | false ( SOFT TISSUES) |
| what is the lining of a lateral periodontal cyst? | stratified squamous epithelium |
| what is the tx for a lateral periodontal cyst | surgical excision |
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