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80 Cards in this Set
- Front
- Back
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hyperdontia -distodens -"fourth molar" |
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hyperdontia peridens (premolar) -most common in mandible
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hyperdontia -mesiodens *most common single supernumerary tooth
(midline) |
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conditions associated with supernumerary teeth: Gardner's |
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Syndromes associated with supernumerary teeth? |
-Gardner's -cleidocranial dysplasia |
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hypodontia (missing 1/few teeth)
-retained decid. and missing premolar |
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hypodontia (missing 1/few teeth) |
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oligodontia -missing 6+ teeth |
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in a child |
anodontia |
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Syndromes assoc. with missing teeth |
-ectodermal dysplasia
also can see in: -downs -cleft lip/palate! -hemifacial microsomia -rad to jaws in kids |
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ectodermal dysplasia -AD condition -at least 2 ectodermal structures are missing |
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macrodontia M |
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Macrodontia may be associated with: |
-vascular abnormalities -hemihypertrophy of face -pituitary gigantism
*could be confused with gemination/positioning errors |
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microdontia
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Microdontia may be assoc. with: |
-may be syndromic -CHF, progeria, downs |
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impaction (canine) |
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impaction (molars) |
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Most common places for impaction? |
canines and molars -teeth encased in bone/soft tissue -tooth "fails" to erupt |
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CBCT bony window -impaction |
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transposition -most common in permanent canine and first premolar -teeth switch places |
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ankylosis |
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Anyklosis could be caused by: |
Fusion to bone could be caused by: -infection -trauma -abscence of permanent tooth |
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ectopia |
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gemination -cleft/invagination of crown -single pulp chamber -normal number teeth -more common in primary teeth -common in insors and canines
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gemination |
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twinning -complete division of the tooth bud
don't confuse with fusion; count teeth! (same number teeth) |
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fusion
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fusion |
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How do you know you have a case of fusion? |
-No pdl space between -one fewer tooth in arch
2 pulp chambers; dentin fused together |
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concrescence -teeth fused by cementum |
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concrescence -no alv. bone or pdl between teeth |
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taurodontism -long trunk, short root -normal crown
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What is associated with taurodontism? |
-Downs -Amelogenesis imperfecta |
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dilaceration -b/l places roots look like bull's eye |
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dilaceration |
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dens in dente -radicular
*folding of hertwig's -line by cementum -rare |
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dens in dente -coronal
*folding inwar of enamel organ -lined with epith |
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dens in dente -invag. |
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enamel pearl |
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Dens in dente may result in? |
-necrosis -rarefying osteitis (aka granuloma or cyst) |
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Diff. dx of enamel pearl |
-calculus -pulp stone |
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talon cusp |
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amelogenesis imperfecta -enamel hypoplasia due to incomplete defective formation of enamel matrix
-normal dentin |
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In amelogenesis imperfecta, enamel is... |
-laminated, prismatic -resistant to caries
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dentinogenesis imperfecta
-sometimes assoc. with osteogenesis imperfecta *with this, blue sclera, multiple fractures and scars (type 1) |
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dentinogenesis imperfecta type 2 -bulbous crown, constricted at CEJ |
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Talk about dentin dysplasia |
Rare -"rootless teeth"
type 1: -radicular
type 2: -coronal |
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Type 1: dentin dysplasia |
-short roots, conical -ROOTLESS TEETH -W shape |
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Type 2: dentin dysplasia |
-normal roots -pulp chambers flame-shaped |
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dentin dysplasia type 1 -w roots |
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dentin dysplasia type 2 -flame pulp |
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dentin dysplasia type 2 |
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regional odontodysplasia -large pulp chambers -thin enamel -ghost teeth |
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Attrition clinical presentation |
-physiological wearing -wear facets -dentin exposure
pathologic: bruxism |
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Attrition on Rx |
-shortened height -secondary dentin -widened pdl -sometimes hypercementosis |
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Abrasion clinically and Rx |
-"v" shaped
rx = semi-circular shape with increasing r-opacity (white) |
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Erosion clinical and Rx |
-chronic vomit/acid reflux -lingual and palatal surfaces affected -lesions look rounded on edges, smooth, glistening depressions on enamel |
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External resorption of tooth structure |
-root surface, involves dentin and cementum -smooth resorption, bone and lamina dura follow the resorbing root |
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floss abrasion *appear as r-lucent grooves *if deep, obliteration of pulp and 2 dentin formation |
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floss abrasion followed by 2 dentin formation -2 dentin formed by odontoblasts |
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pulp stones; no tx |
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hypercementosis |
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Hypercementosis is assoc with? |
-pagets -hyperpituitarism (gigantism)
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stafne bony defect (non-odontogenic) -mn lingual surface -usually below inf. alv. canal -usually at angle of mn
-aka dev. salivary gland defect |
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stafne bony defect (non-odontogenic) -mn lingual surface -usually below inf. alv. canal -usually at angle of mn |
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palatal tori/enostosis |
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mandibular tori/inostosis |
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condylar agenesis (condyle gone) |
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condylar hyperplasia |
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bifid condyle |
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invasive canal cyst -well circumscribed -r-lucent
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invasive canal cyst -well circumscribed -r-lucent |
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cleft palate -can be unilat. or bilat. |
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cleft palate -w/ cleft, could see supernumerary teeth |
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mx sinus agenesis |
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Things to know about cleidocranial dysplasia |
1. delay in eruption of permanent teeth 2. SUPERNUMERARY TEETH 3. DENTIGEROUS CYSTS MAY DEVELOP |
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Cleidocranial dysplasia pts look: |
-large head w/ frontal and parietal protuberance/bossing -skull flat/missing clavicle -high arche palate -small sinus -small maxilla |
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Craniofacial dysplasia pts look: |
-beaten metal appearance -cranial markings; look like digital impression -early closure of sutures |
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craniofacial dysplasia |
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cleidocranial dysplasia |