Developmental Disturbances Flashcards
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Bilateral cleft lip
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Cleft palate
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Bifid Uvula
What difficulties can cleft lip/palate cause?
difficulty speaking, eating, especially babies when they cant feed properly
What is the least severe form of cleft palate?
Bifid uvula
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commissural lip pit
What developmental issue causes commissural lip pits?
fusion of soft tissue of mand and max of lip
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Paramedian lip pits
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double lip
What are fordyce granules?
ectopic sebaceous glands
Are fordyce granules common?
Yes 80%!
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fordyce granules
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fordyce granules
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Leukoedema
How common is leukoedema?
VERY COMMON 90%
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Leukoedema
What are results of diascopy test for leukoedema?
Positive
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oral melanotic macule
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oral melanotic macule
most common location of oral mealanotic macule?
lower lip vermillion. can also be muccal mucosa, gingiva, and palate. Tongue too but rare
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microglossia
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ankyloglossia
What procedure would we do for ankyloglossia?
frenectomy
What problems could someone with ankyloglossia have?
stress on attached gingiva
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fissured tongue
in extreme cases of fissured tongue, what is an issue that the patient may experience?
halitosis (bacterial compaction in fissures)
What are other names for benign migratory glossitis?
geographic tongue; erythema migrans
Is benign migratory glossitis common?
YES
What exactly occurs during benign migratory glossitis?
loss of filiform papilla (transient)
4 types of papillae?
- filiform papillae
- circumvallate papillae
- foliate papillae
- filiform papillae
How can we confirm a patient has benign migratory glossitis?
take a picture and compare in a couple weeks.
What is the cause of hairy tongue?
elongated filiform papillae
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benign migratory glossitis
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hairy tongue
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hairy tongue
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Oral varices (oral varicosities)
What would results of a diascopy test be on oral varices?
Positive (no extravascular blood). Its just dilated veins
Common locaiton of oral varices?
ventral surface of tongue
What can oral varices lead to?
Blood clot (slow blood movement); thrombosed varix
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buccal exostoses
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torus palatinus
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torus mandibularis
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torus mandibularis
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torus mandibularis
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hypodontia
What are the 3 most common teeth to be missing with hypodontia?
- 3rd molars
- 2nd molars
- max laterals
4 most common supernumerary teeth (hyperdontia) of maxilla?
- mesidoens
- 4th molar
- paramolar ( beside molars)
- premolar
What is the most common supernumerary tooth (hyperdontia) of the mandible?
premolar
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microdontia
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microdontia
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gemination
How will total number of teeth change with gemination?
It wont..
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gemination
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gemination
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fusion
How will total number of teeth change with fusion?
1 less tooth (2 teeth fused together)
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fusion
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fusion
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fusion
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concrescence
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concrescence
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concrescence
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Talon cusp
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talon cusp
When treating/removing a talon cusp, how do we do it?
We gradually shave it down. Dont want to do it all at once because there is pulp horn! Gradually do it allowing for reaparative dentin to form at each session.
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dens evaginatus
How do we treat dens evaginatus?
Same as a talon cusp! has a pulp horn too! pretty much the same thing as talon cusp but on posteriors
talon cusp :extra cusp on anteriors
Dens evaginatus: extra cusp on posteriors
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dens evaginatus
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dens invaginatus
Another term for dens invaginatus?
dens in dente
What is the problem patients may have with dens in dente/dens invaginatus?
it is a pit with only a small amount of dentin. It is very easy for food to get trapped in there and for a cavity to form.
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enamel pearl
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Enamel pearl
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cervical enamel extension
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taurodontism
What occurs with taurodontism?
apical aspect of pulp displaced apically
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hypercementosis
What are 4 causes of hypercementosis?
1- cysts
2- supereruption
3- systemic
4- neoplasms
what issue may arise with extraciton of a tooth with hypercementosis?
root fracture may occur
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Dilaceration
What causes dilaceration of teeth?
distrubrance (ussually from trauma) to hertwigs epithelial rooth sheath
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supernumerary roots
3 stages of enamel development?
- secretory stage
- mineralization stage
- maturation stage
What stage of enamel formation does enamel hypoplasia occur?
secretory stage
What stage of enamel formation does enamel hypocalcification occur?
mineralization stage/maturation stage
SYSTEMIC environmental causes of enamel hypoplasia and hypocalcification? (3 pts)
- fluoride
- syphilus
- fevers
LOCAL environmental causes of enamel hypoplasia and enamel hypocalcification
TURNER TOOTH
What are the 2 scenarios that leads to turner tooth?
Decidious tooth has trauma and is driven into permanent tooth bud
deciduous tooth has caries overtop of permanent tooth that then affect ameloblasts of developing permenant tooth
What is another name for dentinogenesis imperfecta?
hereditary opalescent dentin
What are the 2 features of dentinogenesis imperfecta?
- weakeness at DEJ (enamel separates
- bulbous crowns, constriced servix, obliterated pulps
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dentinogensis imperfecta
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dentinogensis imperfecta
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dentinogensis imperfecta
What is the most common type of dentin dysplasia?
Dentin dysplasia type 1
What are the characteristics of dentin dysplasia type 1?
- enamel and coronal dentin are normal
- radicular dentin is abnormal
- roots are short
- pulps are obliterated
what are the characteristics of dentin dysplasia type 2? (primary and permenant dentition)
deciduous tetth have transluscent crowns and obliterated pulps
primary teeth have enlarged pulps with pulp stones
Another name for regional odontodysplasia?
ghost teeth (look like see through teeth in radiograph)
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dentin dysplasia type 2
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dentin dysplasia type 2
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dentin dysplasia type 1
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ankylosis (note lack of PDL space)
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ankylosis of deciduous molar