Tooth Histology: Structure and Composition
30 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of enamel in teeth?

  • To support the structural integrity of the tooth
  • To aid in the process of chewing and grinding food
  • To provide a protective cover to vital tissues of dentin and pulp (correct)
  • To facilitate the exchange of ions within the enamel

    • What is the chemical composition of enamel primarily made of?

  • 60% inorganic substances and 40% organic content
  • 80% water and 20% organic content
  • 100% inorganic substances (Fluoroapatite)
  • 95 to 98% inorganic substances (Hydroxyapatite) (correct)

    • What is the physical unit structure present in human enamel?

  • Dentin tubules
  • Enamel rod or prisms (correct)
  • Pulp capillaries
  • Cementum fibers

    • What happens when fluorides are incorporated into enamel?

    <p>Hydroxyapatite will be converted into fluoroapatite which is more resistant to acids</p> Signup and view all the answers

    What role do micropores in enamel play?

    <p>Form a dynamic connection between the oral cavity and the dentinal tubule fluids</p> Signup and view all the answers

    How much water content forms enamel by weight?

    <p>4%</p> Signup and view all the answers

    What is the natural color of the enamel in the incisal edge and cusp tips?

    <p>Gray or whitish blue</p> Signup and view all the answers

    What happens to the color of enamel when the enamel becomes thinner?

    <p>The color of the dentine shows through and the enamel appears to be darker</p> Signup and view all the answers

    What forms natural cleavage planes through which fracture might occur in enamel?

    <p>Enamel rod boundaries</p> Signup and view all the answers

    What happens if the underlying dentin support is removed, causing the enamel prisms to weaken?

    <p>Undermined enamel occurs</p> Signup and view all the answers

    What occurs during acid etching when bonding to resin composite?

    <p>The enamel rod boundary and central core are differentially soluble</p> Signup and view all the answers

    What provides support for enamel?

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

    Which type of dentin is formed before and shortly after eruption, usually completed 3 years after tooth eruption for permanent teeth?

    <p>Primary dentin</p> Signup and view all the answers

    Which type of dentin is a continuation of primary dentin formed at a slower rate as the tooth ages even without external stimuli?

    <p>Secondary dentin</p> Signup and view all the answers

    What type of dentin is formed in response to irritation such as abrasion, erosion, attrition, and caries?

    <p>Reparative dentin (tertiary dentin)</p> Signup and view all the answers

    What theory states that pain is transmitted through movements of fluid within dentinal tubules?

    <p>Hydrodynamic theory</p> Signup and view all the answers

    What is the chemical composition of enamel primarily made of?

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

    What is the role of micropores in enamel?

    <p>They create a dynamic connection between the oral cavity and the dentinal tubule fluids</p> Signup and view all the answers

    What occurs during acid etching when bonding to resin composite?

    <p>Fluorides are incorporated into enamel</p> Signup and view all the answers

    Which type of dentin is formed before and shortly after eruption, usually completed 3 years after tooth eruption for permanent teeth?

    <p>Primary dentin</p> Signup and view all the answers

    What happens if the underlying dentin support is removed, causing the enamel prisms to weaken?

    <p>Structural integrity of enamel is compromised</p> Signup and view all the answers

    What type of dentin is a continuation of primary dentin formed at a slower rate as the tooth ages even without external stimuli?

    <p>Secondary dentin</p> Signup and view all the answers

    What is the primary function of dentin in teeth?

    <p>Provides structural support for the enamel</p> Signup and view all the answers

    Which type of dentin is formed as a response to irritation such as abrasion, erosion, attrition, and caries?

    <p>Reparative dentin</p> Signup and view all the answers

    What theory states that pain is transmitted through movements of fluid within dentinal tubules?

    <p>Hydrodynamic theory</p> Signup and view all the answers

    What is the natural color of enamel in areas where there is no underlying dentine?

    <p>Gray or whitish blue</p> Signup and view all the answers

    What happens to the color of enamel as it becomes thinner?

    <p>It becomes darker</p> Signup and view all the answers

    What chemical composition primarily forms dentin?

    <p>75% inorganic material, 20% organic material, and 5% water</p> Signup and view all the answers

    What is the role of dentinal tubules in dentin?

    <p>Contain the cytoplasmic process of an odontoblast + dentinal fluid</p> Signup and view all the answers

    Which type of dentin is laid down particularly on the roof and floor of the pulp chamber as the tooth ages?

    <p>Secondary dentin</p> Signup and view all the answers

    More Like This

    Histology of Cap Stage I and Enamel Organ
    10 questions

    Histology of Cap Stage I and Enamel Organ

    ElatedDiscernment6955 avatar
    ElatedDiscernment6955
    Histology of enamel medium
    42 questions

    Histology of enamel medium

    WiseTropicalIsland4758 avatar
    WiseTropicalIsland4758
    Histology of enamel hard
    43 questions

    Histology of enamel hard

    WiseTropicalIsland4758 avatar
    WiseTropicalIsland4758
    Histologischer Aufbau des Zahnes
    45 questions

    Histologischer Aufbau des Zahnes

    SuavePoltergeist724 avatar
    SuavePoltergeist724
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser