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Veterinary Dentistry Q&A 04 (view source)
Revision as of 10:31, 19 August 2011
, 10:31, 19 August 2011Created page with "[[|centre|500px]] <br /> '''Discolorations of teeth can be classified as generalized, local, or pseudodiscolorations.''' <br /> <FlashCard questions="2"> |q1=Which type can b..."
[[|centre|500px]]
<br />
'''Discolorations of teeth can be classified as generalized, local, or pseudodiscolorations.'''
<br />
<FlashCard questions="2">
|q1=Which type can be seen here, and what are the possible causes?
|a1=
The list below summarizes the causes of dental discoloration.
The case in question is a local discoloration, probably of endodontic–traumatic origin. Hemorrhage or necrosis of the pulp causes lysis of the erythrocytes. The hemoglobin breaks down into pigments which penetrate the dentinal tubules and are responsible for the different discolorations. The color of the crown may vary from pink–red to blue–gray or dark gray. In the case of a minor hemorrhage, the pulp may survive, blood pigments may be resorbed and the discoloration may be transient.
Another possible cause of crown discoloration is acute pulpitis of hematogenous origin. A localized pink–red area on the crown may be indicative of vital pulp with internal resorption, the vascular resorbing tissue being visible through the enamel (‘pink spot’ – 36b, arrowed).
Generalized discolorations:
#Genetic: amelogenesis imperfecta; dentinogenesis imperfecta; odontodysplasia.
#Metabolic disturbance (prolonged): enamel hypoplasia; enamel hypomineralization.
#Ageing: enamel infarction; attrition/abrasion.
#Iatrogenic: tetracyclines; fluorosis.
Local discolorations:
#Genetic: odontodysplasia.
#Metabolic disturbance (short period): enamel hypoplasia; enamel hypomineralization.
#Ageing: enamel infarction; attrition/abrasion.
#Trauma/endodontic: pre-eruptive: mechanical/chemical trauma; periapical pathology deciduous tooth; post-eruptive: pulp hemorrhage; pulp necrosis; internal resorption.
#Dental caries.
#Iatrogenic: endodontic and restorative materials.
Pseudodiscolorations:
#Dental plaque and calculus.
#Agents in food.
|l1=
|q2=Is treatment necessary and, if performed, will the discoloration disappear?
|a2=
Radiographic examination and pulp-vitality testing (if available) are indicated and endodontic treatment is most often the treatment of choice. It is important to note that discoloration may persist following endodontic treatment.
|l2=
</FlashCard>
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[[Category:Veterinary Dentistry Q&A]]
<br />
'''Discolorations of teeth can be classified as generalized, local, or pseudodiscolorations.'''
<br />
<FlashCard questions="2">
|q1=Which type can be seen here, and what are the possible causes?
|a1=
The list below summarizes the causes of dental discoloration.
The case in question is a local discoloration, probably of endodontic–traumatic origin. Hemorrhage or necrosis of the pulp causes lysis of the erythrocytes. The hemoglobin breaks down into pigments which penetrate the dentinal tubules and are responsible for the different discolorations. The color of the crown may vary from pink–red to blue–gray or dark gray. In the case of a minor hemorrhage, the pulp may survive, blood pigments may be resorbed and the discoloration may be transient.
Another possible cause of crown discoloration is acute pulpitis of hematogenous origin. A localized pink–red area on the crown may be indicative of vital pulp with internal resorption, the vascular resorbing tissue being visible through the enamel (‘pink spot’ – 36b, arrowed).
Generalized discolorations:
#Genetic: amelogenesis imperfecta; dentinogenesis imperfecta; odontodysplasia.
#Metabolic disturbance (prolonged): enamel hypoplasia; enamel hypomineralization.
#Ageing: enamel infarction; attrition/abrasion.
#Iatrogenic: tetracyclines; fluorosis.
Local discolorations:
#Genetic: odontodysplasia.
#Metabolic disturbance (short period): enamel hypoplasia; enamel hypomineralization.
#Ageing: enamel infarction; attrition/abrasion.
#Trauma/endodontic: pre-eruptive: mechanical/chemical trauma; periapical pathology deciduous tooth; post-eruptive: pulp hemorrhage; pulp necrosis; internal resorption.
#Dental caries.
#Iatrogenic: endodontic and restorative materials.
Pseudodiscolorations:
#Dental plaque and calculus.
#Agents in food.
|l1=
|q2=Is treatment necessary and, if performed, will the discoloration disappear?
|a2=
Radiographic examination and pulp-vitality testing (if available) are indicated and endodontic treatment is most often the treatment of choice. It is important to note that discoloration may persist following endodontic treatment.
|l2=
</FlashCard>
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