Tooth Development And Eruption Part 2 Flashcards
What is enamel hypoplasia?
Enamel hypoplasia is a type of enamel dysplasia resulting from a reduction in the quantity of enamel matrix.
How do teeth appear with enamel hypoplasia?
Teeth appear with pitting and grooves in the enamel surface or horizontal lines across the enamel of the crown.
What dental conditions are associated with enamel hypoplasia caused by syphilis?
Hutchinson incisors and mulberry molars are associated with enamel hypoplasia caused by syphilis.
What causes hutchinsons incisors and mulberry molars?
They are caused by the teratogenic effects of syphilis during development.
What is enamel hypocalcification?
Enamel hypocalcification is a type of enamel dysplasia that results in a reduction in the quality of enamel maturation.
How do teeth with enamel hypocalcification appear?
Teeth appear more opaque, yellower, or browner due to intrinsic staining of the enamel.
What is a Turner spot?
A Turner spot is a single affected area of enamel hypocalcification.
What is a Turner tooth?
A Turner tooth refers to a permanent crown entirely affected by hypocalcification.
How can the discoloration in Turner teeth vary?
The discoloration can range from white spots to darker overall staining.
What can cause both enamel hypoplasia and hypocalcification?
These conditions can occur together and are commonly seen in dental fluorosis.
What is dental fluorosis?
Dental fluorosis is a form of enamel hypomineralization caused by excessive systemic fluoride exposure.
What factors influence the severity of dental fluorosis?
The severity depends on the dose, duration, and age of the individual during fluoride exposure.
How does excessive fluoride affect ameloblasts?
Excess fluoride can cause oxidative stress to ameloblasts, disrupting enamel formation.
How does mild fluorosis appear on enamel?
Mild fluorosis appears as opaque white patches on the enamel.
What are the characteristics of severe fluorosis?
Severe fluorosis causes dark brown stains, rough pitted enamel, and difficulty in cleaning the teeth.
What is the cause of amelogenesis imperfecta and which dentitions does it affect?
Amelogenesis imperfecta is a hereditary condition affecting all teeth in both dentitions.
How does amelogenesis imperfecta affect enamel?
It results in very thin enamel, which may chip off easily or be absent entirely.
How do crowns appear in teeth affected by amelogenesis imperfecta?
The crowns are yellow because they consist mostly of softer dentin.
What problem arises from the soft dentin in amelogenesis imperfecta?
The softer dentin undergoes extreme attrition (wear).
What treatment is recommended for amelogenesis imperfecta?
Full-coverage crowns are recommended to improve esthetics and prevent further attrition.
What is dentin dysplasia?
Dentin dysplasia is the faulty development of dentin.
What causes dentin dysplasia?
It results from an interference with the metabolic processes of odontoblasts during dentinogenesis.
Is dentin dysplasia more common than enamel dysplasia?
No, dentin dysplasia is much rarer than enamel dysplasia.
Can dentin dysplasia result from local or systemic factors?
Yes, it can result from both local and systemic factors, similar to enamel dysplasia.