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?

    <p>Opalescent brown discolouration</p> Signup and view all the answers

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

    <p>Rapid wear and attrition</p> Signup and view all the answers

    What is the characteristic presentation of hypoplasia?

    <p>Thin enamel, pits, grooves, or missing enamel</p> Signup and view all the answers

    What genetic factor is primarily associated with osteogenesis imperfecta?

    <p>Type I collagen defects</p> Signup and view all the answers

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

    <p>Normal amounts of enamel matrix but poorly mineralized</p> Signup and view all the answers

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

    <p>Marfan syndrome</p> Signup and view all the answers

    What common dental issues do children with enamel hypoplasia face?

    <p>Increased tooth sensitivity and caries risk</p> Signup and view all the answers

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

    <p>It usually begins soon after eruption of the teeth</p> Signup and view all the answers

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

    <p>Hypomaturation AI</p> Signup and view all the answers

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

    <p>Increased calculus formation</p> Signup and view all the answers

    What causes enamel defects according to environmental factors?

    <p>Metabolic conditions and trauma</p> Signup and view all the answers

    Which clinical presentation is specific to hypomineralized AI?

    <p>Soft enamel</p> Signup and view all the answers

    During which stage do hypoplastic enamel defects most likely occur?

    <p>Stage of enamel matrix formation</p> Signup and view all the answers

    What is a common characteristic of dentine dysplasia type II?

    <p>Mild phenotype of dentinogenesis imperfecta type II</p> Signup and view all the answers

    Which condition is commonly associated with enamel hypoplasia in children?

    <p>Familial hypophosphataemia</p> Signup and view all the answers

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

    <p>Boys often exhibit more severe dental involvement than girls</p> Signup and view all the answers

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

    <p>Early screening for dental problems</p> Signup and view all the answers

    What is a potential consequence of enamel and dentine defects?

    <p>Increased risk of developing cavities</p> Signup and view all the answers

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

    <p>They exhibit varying phenotypic expressions of the same genetic defect</p> Signup and view all the answers

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

    <p>It is primarily associated with tooth decay</p> Signup and view all the answers

    What is essential for successful management of dentine defects?

    <p>Early diagnosis and preventive care</p> Signup and view all the answers

    What is the focus of the studies referenced regarding APECED?

    <p>Clinical variation in a specific patient group</p> Signup and view all the answers

    What is identified as a possible cause of nutritional rickets?

    <p>Vitamin D deficiency</p> Signup and view all the answers

    Which condition is associated with enamel defects in children?

    <p>Chronic renal failure</p> Signup and view all the answers

    What impact does fluoride have according to the referenced studies?

    <p>Impacts ameloblasts and can lead to enamel fluorosis</p> Signup and view all the answers

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

    <p>Localized drug effect on teeth</p> Signup and view all the answers

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

    <p>Vitamin D</p> Signup and view all the answers

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

    <p>Enamel hypoplasia</p> Signup and view all the answers

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

    <p>Vitamin D-resistant rickets</p> Signup and view all the answers

    What does the DDE Index measure?

    <p>Developmental defects of dental enamel</p> Signup and view all the answers

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

    <p>Amelogenesis imperfecta</p> Signup and view all the answers

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

    <p>It can be associated with joint laxity</p> Signup and view all the answers

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

    <p>Dentin dysplasia</p> Signup and view all the answers

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

    <p>Common dental conditions associated with erosion</p> Signup and view all the answers

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

    <p>A multidisciplinary approach to diagnosis</p> Signup and view all the answers

    Which genetic mutation is associated with hereditary dentine diseases?

    <p>DSPP</p> Signup and view all the answers

    What condition does Witkop discuss regarding hereditary defects?

    <p>Enamel and dentin defects</p> 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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