Enamel and Dentin Defects Quiz (from article)

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Questions and Answers

What classification system has been extensively applied for inherited dentine defects?

Molecular classification

Collagen classification

Osteogenetic classification

Shield's classification (correct)

What is the prevalence range for dentinogenesis imperfecta according to early studies?

1:6000 to 1:8000 (correct)

1:20000 to 1:30000

1:7000 to 1:9000

1:1000 to 1:2000

Which type of dentinogenesis imperfecta is associated with osteogenesis imperfecta?

Type IV

Type II

Type III

Type I (correct)

What notable feature characterizes the teeth affected by dentinogenesis imperfecta type I?

Opalescent brown discolouration Signup and view all the answers

What is a common consequence of dentinogenesis imperfecta regarding tooth structure?

Rapid wear and attrition Signup and view all the answers

What is the characteristic presentation of hypoplasia?

Thin enamel, pits, grooves, or missing enamel Signup and view all the answers

What genetic factor is primarily associated with osteogenesis imperfecta?

Type I collagen defects Signup and view all the answers

Which of the following describes the effects of hypomineralization on enamel?

Normal amounts of enamel matrix but poorly mineralized Signup and view all the answers

Which condition is not typically linked with dentinogenesis imperfecta type I?

Marfan syndrome Signup and view all the answers

What common dental issues do children with enamel hypoplasia face?

Increased tooth sensitivity and caries risk Signup and view all the answers

What characteristic does pulp obliteration display in patients with dentinogenesis imperfecta?

It usually begins soon after eruption of the teeth Signup and view all the answers

Which type of enamel defect is likely to be characterized by altered translucency?

Hypomaturation AI Signup and view all the answers

What is a common dental condition associated with anterior open bite in children with enamel defects?

Increased calculus formation Signup and view all the answers

What causes enamel defects according to environmental factors?

Metabolic conditions and trauma Signup and view all the answers

Which clinical presentation is specific to hypomineralized AI?

Soft enamel Signup and view all the answers

During which stage do hypoplastic enamel defects most likely occur?

Stage of enamel matrix formation Signup and view all the answers

What is a common characteristic of dentine dysplasia type II?

Mild phenotype of dentinogenesis imperfecta type II Signup and view all the answers

Which condition is commonly associated with enamel hypoplasia in children?

Familial hypophosphataemia Signup and view all the answers

How does the manifestation of dentine dysplasia typically differ between boys and girls?

Boys often exhibit more severe dental involvement than girls Signup and view all the answers

What is a recommended practice for children with a family history of dentine defects?

Early screening for dental problems Signup and view all the answers

What is a potential consequence of enamel and dentine defects?

Increased risk of developing cavities Signup and view all the answers

What distinguishes dentinogenesis imperfecta types II and III from dentine dysplasia type II?

They exhibit varying phenotypic expressions of the same genetic defect Signup and view all the answers

Which of the following descriptions is NOT true regarding enamel hypoplasia?

It is primarily associated with tooth decay Signup and view all the answers

What is essential for successful management of dentine defects?

Early diagnosis and preventive care Signup and view all the answers

What is the focus of the studies referenced regarding APECED?

Clinical variation in a specific patient group Signup and view all the answers

What is identified as a possible cause of nutritional rickets?

Vitamin D deficiency Signup and view all the answers

Which condition is associated with enamel defects in children?

Chronic renal failure Signup and view all the answers

What impact does fluoride have according to the referenced studies?

Impacts ameloblasts and can lead to enamel fluorosis Signup and view all the answers

What is a potential outcome of administering tetracyclines during dental development in young dogs?

Localized drug effect on teeth Signup and view all the answers

Which vitamin is significantly tied to the management of dental health in children?

Vitamin D Signup and view all the answers

What oral manifestation is highlighted in the context of end-stage liver disease?

Enamel hypoplasia Signup and view all the answers

Which type of rickets is specifically referenced regarding its dental manifestations?

Vitamin D-resistant rickets Signup and view all the answers

What does the DDE Index measure?

Developmental defects of dental enamel Signup and view all the answers

Which of the following describes a common condition associated with dental erosion in schoolchildren?

Amelogenesis imperfecta Signup and view all the answers

What is a characteristic of the type II collagen defect referenced in the content?

It can be associated with joint laxity Signup and view all the answers

Which of the following is a proposed classification introduced for heritable human dentine defects?

Dentin dysplasia Signup and view all the answers

What does the research by Kazoullis et al. focus on?

Common dental conditions associated with erosion Signup and view all the answers

What is a primary topic discussed in the study by Urzua et al.?

A multidisciplinary approach to diagnosis Signup and view all the answers

Which genetic mutation is associated with hereditary dentine diseases?

DSPP Signup and view all the answers

What condition does Witkop discuss regarding hereditary defects?

Enamel and dentin defects Signup and view all the answers

Study Notes

Enamel Defects

Enamel defects can be caused by genetic and environmental factors.
Abnormalities in enamel can be categorized into hypoplasia, hypomineralization, and hypomaturation.
Hypoplasia is a reduction in enamel quantity, resulting in pits, grooves, or thin enamel.
Hypomineralization is reduced mineralization, leading to soft enamel.
Hypomaturation is characterized by altered translucency of enamel, often appearing opaque and discolored.
Enamel defects caused by hypoplasia are thought to occur during matrix formation.
Enamel defects caused by hypomineralization and hypomaturation arise from changes affecting enamel mineralization.

Dentin Defects

Inherited dentin defects can affect only dentin or involve both dentin and bone.
Two major types of dentin defects are dentinogenesis imperfecta and dentin dysplasia.
Dentinogenesis imperfecta is the most common type of dentin defect.
Dentinogenesis imperfecta Type I is associated with osteogenesis imperfecta, a genetic condition affecting bone.
Dentinogenesis imperfecta Type II is a mild form of dentin dysplasia and is often associated with a mutation in the DSPP gene.
Dentin dysplasia Type II is characterized by a mild form of dentinogenesis imperfecta.
Dentin defects can be diagnosed early by screening family history and known associated medical conditions.

Rickets

Rickets, a disease affecting bone development, can also affect dental health.
Dental complications associated with dental rickets include enamel hypoplasia, delayed eruption, and tooth discoloration.

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