the embryonic structure that becomes the oral cavity to henrtwigs
epithelial root sheath in the 3rd week
stomodeum
median nasal processes and lateral nasal process.
frontal process
max processes and the mandibular process come together from what
first branchial arch
upper part of the cheeks and lateral portions of the upper lip and
part of the palate
maxillary process
lower part of the cheeks the mandibular and the part of the tongue
come together
mandibular process
tongue tie. when the Tongue is bound extensively to the floor of the mouth
anklyossia
epithelial lined tracts at the corners of the mouth. fusion of mx and
md process
commissural lip pit
small mass of thryoid tissue located on the tongue.
ectopic lingual thyroid nodule. lingual thyroid
abnormal pathologic sac lined by epithelium enclosed in a connective
tissue capsule. usually no concern for malignancy. space is often
filled with fluid or fragments/tissue
cyst
related to tooth formation
odontogenic
not related to tooth development
nonodontogenic
within the bone
intraosseous
in soft tissue
extraosseous
well defined one compartment
unilocular
many lobes or parts
multi ocular
forms around the root of a nonmetal tooth. most common cyst. follows
a periodical granuloma.
etiology-caries,trauma, pre existing periodical granuloma, deep
restoration,puplpitis and periapical inflammation
odontogentic cyst
well defined unilocular radiolucency a radicular cyst that remains
after extraction of the infected bone but sac is still there
residual cyst
well defined unilocular radiolucency. forms around the crown of an
unerupted or developing tooth. most common 3rd molars. if it is not
removed a neoplasm may develop
dentigerous cyst. follicular cyst
well defined unilocular or multi ocular radiolucency. most common 3rd
molar. develops in place of a tooth-intraosseous/asymptomatic. it can
turn into an ameloblastoma(destructive benign tumor)
primordial cyst
well defined usually multi ocular radiolucency. microscopic
appearance. Sean in mandible. high reoccurrence rate!
odontogentic cyst
unilocular or multi ocular intraosseous. most often seen between root
of md canine and premolar.
lateral periodontal cyst
soft tissue cyst that forms around the crown of an erupting tooth. no
concern. ameloblastoma may develop. most common 1st permanent molars
and incisors
eruption cyst
lateral periodontal cyst that occurs in the soft tissue. few
recurrence. involves soft tissue only. small bulge swelling in the
interdental papillae
gingival cyst
not related to tooth development. named based on location within the bone
nonodontogenic cyst
well defined radiolucency lesion that is often heart shaped. located
near the incisive papilla. occurs within nasopalatine canal or
incisive papilla. common above max centrals. surgical excision
prognosis is good
nasopalatine canal cyst
well defined unilocular radiolucency located in the midline of the
hard palate. posterior. to incisive papilla in the midline of the hard
palate more posterior than the nasopalatine canal cyst. remove entire
mass without rupturing it (enucleation) good prognosis
median palatine cyst
well defined pear shaped radiolucency located between the root of the
maxillary lateral incisor and canine. teeth are vital reoccurrence is rare
globulomaxillary cyst
well defined radiolucency located in the midline of the md incisors.
surgical removal surrounds vital teeth. prognosis is good. rare
median mandibular cyst
is the removal of the entire mass without rupturing it. cystic sac is
curettage. excellent prognosis.
enucleation
swelling in the mucolabial fold by the mx canine and floor of the
nose. surgical excision reoccurrence is rare
nasolabial cyst
raised nodule in the skin of the face and neck. round well defined
semi firm palpable mass
epidermoid cyst
orally it is located in the floor of the mouth with a dough like
consistency more common in other parts of the body. ovarian cyst.
histologically develops from entrapped epithelium sebaceous glands
hair and teeth
dermoid cyst
dermoid cyst that also contains teeth, bone,muscles,and nerve tissue.
if malignant type teeth are not present
benign cystic teratoma
pinkish yellowish raised nodule usually on the floor of the mouth and
lateral borders of the tongue.
lymphoepithelial cyst(branchial cleft cyst)
smooth bulge or swelling near the midline of the neck(below the hyoid
bone) may have difficulty swallowing(dysphagia)
thyroglossal tract cyst
not a true cyst, are lined with epithelium
pseudocysts
well defined cyst like radiolucency located in the posterior region
of the mandible between the mandibular canal and the inferior border
not a true cyst
pseudocysts
well defined unipolar or multi ocular radiolucency that shows
scalloping around the roots of teeth.radiolucency 1-7cm round oval
elliptical multilocular projections extend between rooths/teeth
simple bone cyst(traumatic bone cyst)
honeycomb or soap bubble radiolucency.similar to giant cell
granuloma. multi ocular giant cells. fibrous connective tissue
aneurysmal bone cyst