Crown to Root Ratio and Periodontal Tissues Quiz
49 Questions
2 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

Which of the following can cause peri-implantitis?

  • Loosened screw
  • Improper crown placement
  • Excess cement (correct)
  • Bone loss

    • What is the advantage of a screw retained implant?

  • It is easier to use
  • It is retrievable (correct)
  • It has a lower risk of peri-implantitis
  • It requires less chair time

    • What is a potential disadvantage of a screw retained implant?

  • It causes irreversible bone loss
  • It has a higher risk of peri-implantitis
  • It is more difficult to clean
  • It requires frequent maintenance visits (correct)

    • Which type of bridge design is not recommended for posterior regions?

    <p>Single retainer cantilever</p> Signup and view all the answers

    Which branch of Dentistry is concerned with the design and fitting of artificial replacements for teeth and other parts of the mouth?

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

    Which type of connector is used when one of the abutment teeth is tilted off axis?

    <p>Non-rigid connector</p> Signup and view all the answers

    What is the purpose of a crown in prosthodontics?

    <p>To repair a damaged tooth</p> Signup and view all the answers

    Which type of tooth should never be used as an abutment for a bridge?

    <p>Endo treated tooth</p> Signup and view all the answers

    What is the definition of an intermediate abutment?

    <p>A natural tooth without adjacent teeth in proximal contact</p> Signup and view all the answers

    What is the purpose of an implant in prosthodontics?

    <p>To replace a single missing tooth</p> Signup and view all the answers

    What is the function of a connector in a dental bridge?

    <p>To connect the retainer to the pontic</p> Signup and view all the answers

    Which type of teeth are preferred as abutment teeth for a bridge?

    <p>Molars with multiple roots</p> Signup and view all the answers

    When is splinting of teeth recommended?

    <p>When the abutment tooth has short roots</p> Signup and view all the answers

    Which type of root shape is ideal for an abutment tooth?

    <p>Divergent roots</p> Signup and view all the answers

    When are removable partial dentures indicated?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is the definition of crown to root ratio in prosthodontics?

    <p>The comparison of the length of the crown to the length of the root</p> Signup and view all the answers

    What is the ideal crown to root ratio for an abutment tooth for a bridge?

    <p>1 to 2</p> Signup and view all the answers

    According to Ante's Law, what should be the relationship between the PDL surface area of the abutment teeth and the imaginary PDL surface area of the missing teeth in a fixed bridge prosthesis?

    <p>The PDL surface area of the abutment teeth should be equal to the imaginary PDL surface area of the missing teeth</p> Signup and view all the answers

    What would be the prognosis of a bridge that violates Ante's Law?

    <p>Poor prognosis</p> Signup and view all the answers

    What is the branch of Dentistry concerned with the design and fitting of artificial replacements for teeth and other parts of the mouth?

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

    What is the term for the crown that attaches to the abutment in a dental bridge?

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

    What is the term for the fake tooth in the center of a dental bridge?

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

    What is the term for the tooth to which the bridge attaches in a dental bridge?

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

    What is the term for the component that connects the retainer to the pontic in a dental bridge?

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

    Which treatment option is a popular but expensive way of replacing missing teeth using artificial replacements?

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

    What is the crown to root ratio that is considered ideal for an abutment tooth for a bridge?

    <p>1 to 2</p> Signup and view all the answers

    What is the minimum crown to root ratio that can be used for an abutment tooth?

    <p>1 to 1</p> Signup and view all the answers

    What is Ante's Law?

    <p>The law that states the PDL surface area of the abutment teeth should be greater than the PDL surface area of the missing teeth</p> Signup and view all the answers

    What is the prognosis of a bridge that violates Ante's Law?

    <p>Poor prognosis</p> Signup and view all the answers

    What happens if there are more missing teeth in a bridge design?

    <p>The bridge becomes longer</p> Signup and view all the answers

    What is the clinical crown and root that are considered in the crown to root ratio?

    <p>Clinical crown and clinical root</p> Signup and view all the answers

    Which of the following is a potential disadvantage of a cement retained implant?

    <p>It can cause peri-implantitis</p> Signup and view all the answers

    What is the advantage of a screw retained implant?

    <p>It can be retrievable</p> Signup and view all the answers

    What is the main difference between peri-implantitis and periodontitis?

    <p>Peri-implantitis occurs around an implant, while periodontitis occurs around natural teeth</p> Signup and view all the answers

    What is the purpose of the screw access hole in a screw retained implant?

    <p>To provide access for cleaning around the implant</p> Signup and view all the answers

    What is one potential problem with a screw retained implant?

    <p>The screw may loosen during function</p> Signup and view all the answers

    What are the consequences of excess cement in a cement retained implant?

    <p>Gum inflammation and bone loss</p> Signup and view all the answers

    Which type of tooth is recommended as an abutment for a bridge?

    <p>Teeth with multiple roots</p> Signup and view all the answers

    When would splinting of teeth be recommended in a bridge?

    <p>When the abutment tooth has a small PDL surface area</p> Signup and view all the answers

    What is the ideal root shape for an abutment tooth?

    <p>Curved and broad roots</p> Signup and view all the answers

    When are removable partial dentures indicated?

    <p>All of the above</p> Signup and view all the answers

    Which arch is contraindicated for a complete denture when only the mandibular anterior teeth are present?

    <p>Upper arch</p> Signup and view all the answers

    What is an over denture?

    <p>A denture that is supported by implants</p> Signup and view all the answers

    Which type of bridge design is not recommended for posterior regions?

    <p>Cantilever bridge</p> Signup and view all the answers

    Which type of connector is used when one of the abutment teeth is tilted off axis?

    <p>Non-rigid connector</p> Signup and view all the answers

    What is the definition of an intermediate abutment?

    <p>An implanted tooth substitute without adjacent teeth in contact</p> Signup and view all the answers

    What is the main reason why endo treated teeth should not be used as abutments?

    <p>They become weaker due to the removal of dentin</p> Signup and view all the answers

    What is the main disadvantage of using compromised periodontal teeth as abutments?

    <p>They have compromised periodontal health</p> Signup and view all the answers

    When are non-rigid connectors used in bridge design?

    <p>When one of the abutment teeth is tilted off axis</p> Signup and view all the answers

    Study Notes

    Prosthodontics Concepts

    • Peri-implantitis can be caused by poor oral hygiene, smoking, and genetic predisposition.

    Implant Retention

    • Screw-retained implants offer the advantage of easier retrievability.
    • A potential disadvantage of screw-retained implants is that the screw access hole can be problematic.

    Bridge Design

    • Using a cantilever design is not recommended for posterior regions.
    • When one of the abutment teeth is tilted off-axis, a non-rigid connector is used.

    Prosthodontics Definition

    • Prosthodontics is the branch of dentistry concerned with the design and fitting of artificial replacements for teeth and other parts of the mouth.

    Abutment Tooth Selection

    • Teeth that should never be used as abutments for a bridge include endo-treated teeth.
    • Compromised periodontal teeth are not ideal abutments due to their doubtful prognosis.
    • Ideal abutment teeth have a root shape that is conical, tapered, and long.

    Crown to Root Ratio

    • The ideal crown to root ratio for an abutment tooth is 2:3 or 1:1.5.
    • According to Ante's Law, the PDL surface area of the abutment teeth should be equal to or greater than the imaginary PDL surface area of the missing teeth.
    • Violating Ante's Law can lead to a poor prognosis for the bridge.

    Bridge Components

    • The crown that attaches to the abutment in a dental bridge is called a retainer.
    • The fake tooth in the center of a dental bridge is called a pontic.
    • The tooth to which the bridge attaches is called an abutment.
    • The component that connects the retainer to the pontic is called a connector.

    Treatment Options

    • Removable partial dentures are indicated when there are multiple missing teeth.
    • An over denture is a type of treatment option that involves placing a denture over existing teeth.

    Implant Complications

    • Excess cement in a cement-retained implant can cause peri-implantitis.
    • Peri-implantitis is different from periodontitis in that it occurs around implants rather than natural teeth.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on crown to root ratio and its importance in prosthodontics. Learn why compromised periodontal tissues are weaker and how it affects bone support. Discover important concepts in the field of prosthodontics.

    More Like This

    Dental Implants: Surgical Techniques
    5 questions

    Dental Implants: Surgical Techniques

    PolishedWilliamsite5660 avatar
    PolishedWilliamsite5660
    Maxillofacial Prosthodontics and Implant Prosthodontics
    6 questions

    Maxillofacial Prosthodontics and Implant Prosthodontics

    AltruisticJasper4884 avatar
    AltruisticJasper4884
    Dental Implants and Materials
    12 questions

    Dental Implants and Materials

    SpellboundLepidolite avatar
    SpellboundLepidolite
    Prosthodontics Lecture 1: Dental Implants History
    18 questions

    Prosthodontics Lecture 1: Dental Implants History

    InvaluableParticle avatar
    InvaluableParticle
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser