Tooth Anomalies (p. 305) Flashcards
What are extrinsic anomalies?
Arise from physical trauma, chemical trauma, biological agents, nutrition deficiencies, dysfunction, stress, and habits
What are intrinsic anomalies?
Arise from heredity, genetic mutations, and metabolic dysfunction
What are congenital conditions?
Occur at or before birth, sometimes the result of heredity, and sometimes the condition does not become evident until years after birth
What are familial tendencies?
Conditions exhibiting some evidence of an inherited tendency, but such evidence is inconclusive
What are hereditary conditions?
Directly related to an individual’s genetic makeup
Familial tendencies vs. hereditary conditions
FT: Conditions exhibiting some evidence of an inherited tendency, but such evidence is inconclusive
HC: Directly related to an individual’s genetic makeup
What are anomalies in shape?
What causes anomalies in shape?
Variations in size due to morpho-differentiation of the tooth germ
What is macrodontia?
Condition in which the teeth have formed too large for their arch
What is microdontia?
Condition in which the teeth have formed too small for their arch
What is taurodontism?
A hereditary disturbance in which the pulp chambers are unusually large, especially in the roots
What is Turner's teeth? (What is it? What tooth does it affect? What causes it? What is the result?)
Hypocalcification of a single tooth, usually an incisor, from trauma or bacteria disturbing the ameloblastic layer which results in a hypoplasia of the enamel
What is dens in dente?
A tooth within a tooth, or an invagination of the outer surface of the tooth crown
What are peg laterals?
Occur when a maxillary lateral incisor never forms a crown and the enamel never takes shape
What are Mulberry Molars?
What causes them?
Irregularly shaped molars with poorly shaped cusps due to congenital syphilis
What are Hutchinson’s incisors?
What causes it?
Notched incisors due to prenatal syphilis
