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robbypowell's version from 2017-02-08 04:29

developmental abnormalities

Question Answer
generalized term for condition with one or more teeth that are smaller than normalMicrodontia
subtype of microdontia... just 1 tooth smaller than normal, commonly max lateralIsolated microdontia
what is the most common site of isolated microdontia?Max lateral (peg lateral)
subtype of microdontia seen in pituitary dwarfismTrue generalized microdontia
True generalized microdontia is seen with what endocrine condition?Pituitary Dwarfism
subtype of microdontia where the teeth are a normal size but the maxilla and mandible are oversized making them appear smallerRelative generalized microdontia
generalized term for condition with one or more teeth that are larger than normalMacrodontia
subtype of macrodontia seen in pituitary gigantismTrue generalized macrodontia
subtype of macrodontia with normal size teeth, but smaller jaw bone = teeth look largerrelative generalized macrodontia
subtype of macrodontia seen in hemifacial hypertrophy All structures (jaw, teeth, muscles, etc) on one side are largerRegional macrodontia
subtype of macrodontia where one tooth mostly just the crown is enlarged, less common to see enlarged rootsIsolated Macrodontia
what is the main dental implication of isolated macrodontia?restorations and endo are affected bc pulp is larger
condition where single tooth with abnormally large rootRadiculomegaly/(macro dents)
generalized term for fewer teeth than normal due to failure of teeth to formHypodontia
_____ is one of the most common dental abnormalities... appearing in permanent teeth with a 2-10% prevalenceHypodontia (fewer teeth than normal due to failure of teeth to form)
hypodontia where SOME teeth are missing is referred to as _____-dontiaOligo-dontia
hypodontia where ALL teeth are missing is referred to as _____-dontiaANO-dontia
Hypodontia would come from syndromes and conditions that affect what germ tissue?Ectoderm
X-linked ectodermal dysplasia affects what gender? is a defect in what gene?Males (mothers are carriers); defect in gene Xq12-q13.1
A girl with ectodermal dysplasia must have what version of the disorder?autosomal recessive
t/f: ectodermal dysplasia is a Mendelian disorderTrue (single gene mutation)
List 7 conditions associated with hypodontiaEctodermal dysplasia, carnio-oculo-dental, Ehlers syndromes, Hurler, oro-facial digital type 1,Otodental dysplasia, sturge-Weber
how can teeth forming in the case of hyperdontia be differentiated from odontomas?these have normal enamel/dentin/pulp and arranged in proper sequence
what race has a higher incidence of hyperdontiaasians (>whites)
term for supernumerary conical tooth in between 8 & 9, may or may not eruptMesiodens
term for supernumerary extra tooth-like structure in posterior area, may affect hygieneParamolar/distmolar
term for teeth that a baby was born with, may cut ventral side of tongue or cause problems with suckling; often extractedNatal teeth
t/f: Non-syndromic/sporadic hyperdontia is symmetrical in presentationtrue
t/f: Non-syndromic/sporadic hyperdontia is asymmetrical in presentationfalse
Cleidocranial dysplasia is associated with what gene defect?Defective gene on 6p21
this gene is necessary for osteoblastic differentiation and function in membranous bones; also important for odontogenesis... what condition is associated with a defect in this gene?6p21; Cleidocranial Dysplasia; (apparently assoc w hyperdontia)
"Wormian bones" in the skull and lack of midline cranial fusion are signs of what syndromic condition?Cleidocranial Dysplasia
t/f: 100% of Gardner syndrome patients develop precancerous adenocarcinoma of the colonTrue
recommended treatment for gi tract concerns of gardner's syndromeprophylactic colectomy
____% of Gardner's syndrome patients have malignant transformation by age 30; _______% by middle age50%; 100%
Multiple osteomas, Multiple cutaneous cysts (epidermoid cysts), Multiple desmoid tumors (fibromatosis), and Multiple intestinal polyps (adenomas) are signs of what syndromic condition? what chromosome is affected?Gardner's syndrome; Chromosome 5
this morphological abnormality of teeth is associated with amelogenesis imperfecta, Klinefelter syndrome (XXY) & down syndromeTaurodontism (bull-like teeth, elongated crown, apically placed furcation)
term for wide crown due to union of two adjacent teeth by dentin along crown or crown/root (deciduous and permanent dentition affected)Fusion
term for fusion of ROOTS by cementumConcrescence
term for single rooted tooth with unusually wide or partially divided crown or two separate crowns (deciduous and permanent teeth affected)Germination
two systemic conditions associated with hypercementosisPaget's disease (elevated alkaline phosphatase) & Hyperpituitarism
Nutritional deficiencies of what 3 vitamins can cause acquired developmental disturbance?A/C/D
T/F: Amelogenesis imperfecta is a mendelian disorderFalse (not a single gene mutation)
‘snow-capped teeth’ due to hard, opaque enamel, would be caused by what subtype of what condition?hypo maturation amelogenesis imperfecta**TEST**
hereditary defect in dentin where coronal dentin and tooth color are normal, but crown and root dentin has gnarled pattern**Dentin Dysplasia
ghost teeth are associated with what non-hereditary Developmental disturbance of several adjacent teeth where enamel and dentin are thin, irregular and fail to mineralizeRegional Odontodysplasia (caused by ischemia during development)
In regional odontodyspluasia only the teeth are affected... what is a differential diagnosis in which the teeth & jaw are affected?odontomaxillary dysplasia
pits on lower lip, cleft lip with or w/o palate, cleft palate alone, missing teeth are features of what chromosome mutation condition?Van der Woude syndrome
Double lip may be associated with _____ syndrome; other features include blepharochalasis (drooping skin above eye), & non-toxic thyroid enlargementAscher Syndrome
Amyloidosis is a metabolic condition, associated with _____ ______ which is a Cancer of bone marrow B lymphocytesmultiple myeloma
what stains would be used to diagnose amyloidosis or multiple myeloma... what bloodwork results?congo red stain; lots of proteins in blood
t/f: White sponge nevus/Cannon disease is an uncommon genetic disease causing precancerous thickened and folded oral mucosa Due to mutation in mucosal keratin pair of genesFalse (not precancerous; tx unnecessary)
t/f: White sponge nevus/Cannon disease is an uncommon genetic disease causing benign thickened and folded oral mucosa Due to mutation in mucosal keratin pair of genesTrue (not precancerous; tx unnecessary)
t/f: lingual thyroid nodules should be removed from patientsFalse (not always true- may be the only thyroid patient has, in which case DO NOT remove)
tonsillar enlargement is more concerning when it is (unitlateral/bilateral)Unilateral is more concerning (can be indicative of cancer)
scleroatrophic disfiguring process, affects only one sideHemifacial atrophy
subtype of hemifacial atrophy with localized scleroderma affecting only one side of the faceRomberg’s hemiatrophy (Skeletal problems, autoimmune disease, targets fibroblasts and forms thick scar-like tissue)
metaplastic condition, synovial membrane forms cartilaginous nodules due to trauma to condylar headSynovial chondromatosis
Coronoid hyperplasia with osteochondroma aka ______ disaease: unilateral facial enlargement, tumor on coronoid process = prevents pt from functioning normallyJacob's disease
which phar arch gives rise to max and mandible?1st arch
what is the stafne defect and where would it be found?Lingual mandibular salivary gland depression defect; inferior to mand canal
"shell teeth" are associated with what condition?Dentinogenesis imperfecta
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Classification of cleft lip/palate

Question Answer
Classification of cleft lip/palate: clefts of lip and/or alveolus• Group 1:
Classification of cleft lip/palate cleft lip, alveolus, AND palate• Group 2:
Classification of cleft lip/palate clefts of primary and secondary palate• Group 3:
Classification of cleft lip/palate rare clefts, median upper lip cleft, oblique facial clefts with nasal defects ad scalp defects• Group 4:
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