ch. 2 Flashcards
what causes turners tooth?
Inflammation of the primary tooth causes enamel defect of permanent tooth
What’s optimum fluoride levels for water?
.7 parts per million
What levels should you worry about kids getting fluorosis?
1.2-1.5 ppm
What is hutchisons triad? (for syphilis)
hutchison’s teeth
interstitial ketatitis (corneal scarring)
8th nerve deafness
What is the definition of “no teeth”? caused by what?
Anodontia
Hereditary hypohidrotic ectdermal dysplasia
What is “lack of 6+ teeth”?
Oligodontia (type of hypodontia)
Where’s the most common site for hyperdontia, supernumerary teeth? And what’s the tooth called
maxillary incisors
mesiodens
Where is the most common site for hypodontia?
Molars
What is Riga-Fede disease?
When you have soft tissue trauma (because of natal teeth)
What are natal teeth?
teeth erupted at birth
What’s it called when you have two fused teeth, but normal number of teeth?
Gemination
What’s it called when you have two fused teeth, but one less tooth than normal?
Fusion
What does concresence teeth look like?
The root cementum is fused to the next tooth
What do dilaceration teeth look like?
Bent tooth root
Dens evaginatus?
a lobe that shoots out the middle of the tooth (usually premolar)
What’s the difference between dens invaginatus and Dens evaginatus?
Dens invaginatus: lateral incisor (actual extra tooth in the center)
Dens evaginatus: usually premolar (extra lobe coming out
What’s dens-in-dente?
Dens invaginatus (seen as a pit on the incisor edge) and it’s an extra tooth inside the tooth
What tooth is most common for dens-in-dente? dens invaginatus?
Maxillary Lateral incisors
What is ectopic enamel called?
Enamel pearl
What is an enlarged root chamber called?
Taurodontism
What syndrome can cause taurodontism?
Tricho-dento-osseus syndrome
hair-tooth-bone abnormalities
What does hypercementosis look like?
extra ball of cementum on the root (hard to extract)
What disease can cause hypercementosis?
Pagets disease
Which teeth are most likely to have dilaceration?
3rd molars
What are the three parts of Amelogenesis imperfecta?
Hypoplastic (enamel doesn’t lay down everywhere)
Hypocalcified
Hypomaturation
What does hypoplastic A. imperfecta look like?
Pitting
What does hypomaturation A. imperfecta look like?
Snow capped teeth
What does hypocalcified A. imperfecta look like?
Crumbly teeth, yellow brown, flaky teeth.
What’s the gene mutation that causes Dentinogenesis imperfecta?
DSPP (dentin sialophosphoprotein)
What’s the gene mutation that causes Osteogenesis imperfecta?
Col1
What does dentinogenesis imperfecta look like?
Blue teeth
What are 4 things dentinogenesis imperfecta looks like radiographically?
Bulbous crown
Cervical constriction
No pulp chamber
Thin roots
What is type 1 dentin dysplasia?
Rootless teeth
What is type 2 dentin dysplasia?
obliterated partial root canal (hot dog on a stick)
Blue teeth
Is regional odontodysplasia inherited?
no
Is A.I, D.I., D.D inherited?
yes
What does regional odontodysplasia look like
Ghost teeth xray (un-erupted)
What are pits called in the corners of the mouth?
Commissural lip pits
What is a stafne defect called?
Lingual submandibular salivary gland depression
How big is a nasopalatine duct cyst?
6mm
How do you test an ankylosed tooth?
Tap it with a tool, sounds like dull thud
Three syndromes associated with Taurodontism?
Tricho-dento-osseous syndrome
Kleinfelters syndrome
A. imperfecta
What are calcified things in the pulp called?
Pulp stones
