"Abnormalities of Teeth"
– 10 –
Charles Dunlap, DDS
Sept. 2004
#1
What is your diagnosis of the condition in Slide #67?
#2
Slides # 68 and #69. Does this child have dentinogene-
sis imperfecta? Neither parent had discolored teeth.
#3
Slide #70 Several children in the family had mottled
teeth, the parents did not. Is this an example of reces-
sively inherited hypomaturation amelogenesis imper-
fecta? Note the marked similarity to HAI in Slide # 66.
Answers
#1
The answer is taurodontism and hypoplastic (smooth)
amelogenesis imperfecta.
Note the large, tall pulp chamber and the thin enamel
cap on the teeth.
#2
The answer is no. This child has mottled teeth caused
by taking tetracycline during the years the teeth were
forming. This antibiotic is deposited in teeth and bone
and darkens both. Slide # 69 is an undemineralized,
thin section of a tooth viewed with fluorescent light.
Each yellow band of fluorescence in the dentin marks
an episode of treatment with tetracycline.
#3
Slide #70 is an example of dental fluorosis. The family
moved to a farm in the Texas panhandle and drank
water from a well with a fluoride content of greater
than four ppm.
Charles Dunlap, DDS
September 2004
Slide 70
Slide 69
Slide 68
Slide 67
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