Causes of Pulp and Periapical Injuries in Endodontics
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Questions and Answers

What is the main focus of the lecture?

  • To detail the etiology and progress of pulp and periapical injuries (correct)
  • To explain pulp and surrounding tissues response to pulp and periapical injuries
  • To explain types of endodontic infections
  • To discuss causes of normal periapical tissues

    • Which category represents teeth with normal periapical tissues?

  • Teeth with pulpoperiapical pathosis
  • Teeth with pulpal inflammation
  • Teeth with normal lamina dura and periodontal ligament structures (correct)
  • Teeth with caries and incomplete removal of pulp tissue

    • What is the etiology of pulpoperiapical diseases?

  • Inflammatory response of periapical connective tissue (correct)
  • Improper manipulation
  • Pulp extirpation
  • Infection spreading from gum disease

    • What is the pathway of the pulp and periapical pathosis set out from?

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

    What does pulpal inflammation extend across?

    <p>The apical foramen</p> Signup and view all the answers

    What represents a clinical and radiographic diagnostic category in which the tooth has normal periapical tissues?

    <p>Normal periapical tissues</p> Signup and view all the answers

    What is the inflammatory response of the periapical connective tissue due to?

    <p>A pulpal irritant</p> Signup and view all the answers

    Which condition represents teeth that will not be abnormally sensitive to percussion or palpation testing?

    <p>'Normal Periapical Tissues'</p> Signup and view all the answers

    What is the main focus of pulpoperiapical pathosis?

    <p>'Pulp extirpation'</p> Signup and view all the answers

    Which of the following contribute to Pulpoperiapical diseases etiology?

    <p>Over-extension of root canal fillings</p> Signup and view all the answers

    What is responsible for the inflammatory response in Pulpoperiapical Pathosis?

    <p>Pulpal irritants</p> Signup and view all the answers

    Which category represents teeth with caries without incomplete removal of pulp tissue?

    <p>Teeth with pulpal inflammation</p> Signup and view all the answers

    Which type of endodontic infection is characterized by a well-defined radiolucent area surrounded by radioopaque margins?

    <p>Periapical cyst</p> Signup and view all the answers

    What distinguishes a periapical granuloma from a chronic apical abscess?

    <p>Well-defined radiolucent area surrounded by radioopaque margins</p> Signup and view all the answers

    What is the characteristic clinical feature of chronic periapical abscess?

    <p>Pus draining through a sinus tract</p> Signup and view all the answers

    Which condition is a productive response of the periapical bone to long-standing pulpal irritation?

    <p>Condensing osteitis</p> Signup and view all the answers

    What is the most appropriate treatment for periapical cyst?

    <p>Surgical removal of the cyst</p> Signup and view all the answers

    Which type of endodontic infection is characterized by a central fluid-filled epithelium-lined cavity surrounded by granulation tissue and a fibrous capsule?

    <p>Periapical cyst</p> Signup and view all the answers

    What defines condensing osteitis radiographically?

    <p>Radio-opaque appearance</p> Signup and view all the answers

    Which type of endodontic infection leads to the formation of pus draining through a sinus tract?

    <p>Chronic periapical abscess</p> Signup and view all the answers

    What distinguishes chronic apical periodontitis incipient stage from chronic apical periapical abscess?

    <p>Some degree of mobility due to bone loss</p> Signup and view all the answers

    Which condition results from irritation and proliferation of epithelial rests of Malassez?

    <p>Periapical cyst</p> Signup and view all the answers

    What causes an increase in bone density in condensing osteitis?

    <p>Osteoblastic hyperactivity</p> Signup and view all the answers

    What leads to the formation of a cavity in the center of a periapical granuloma?

    <p>Liquefactive necrosis of inner cells</p> Signup and view all the answers

    What is the most difficult condition to treat according to the text?

    <p>Acute apical periodontitis (incipient stage)</p> Signup and view all the answers

    What is the characteristic symptom of acute apical periodontitis (incipient stage)?

    <p>Moderate to severe pain</p> Signup and view all the answers

    Which condition is characterized by red ballooning out (gum boil) opposite to the area of drainage?

    <p>Subacute periapical abscess</p> Signup and view all the answers

    What is the most intense pain associated with in the case of acute periapical abscess?

    <p>Periosteum and mucosa rupture</p> Signup and view all the answers

    What is the etiology of recrudescent abscess (Phoenix abscess)?

    <p>Granulomatous zone contamination</p> Signup and view all the answers

    What is the clinical sign that differentiates chronic apical periodontitis (incipient stage) from other conditions?

    <p>-ve or slight discomfort on percussion</p> Signup and view all the answers

    What is the main cause of acute periapical abscess?

    <p>Cells of periapical tissue suffer from hypoxia &amp; anoxia</p> Signup and view all the answers

    What is the characteristic feature of symptomatic pulpoperiapical disease?

    <p>Increase intraperiapical pressure</p> Signup and view all the answers

    Which condition results from blockage of sinus drainage?

    <ul> <li>Subacute periapical abscess</li> </ul> Signup and view all the answers

    'Painless with necrotic pulp' is a characteristic feature of which condition?

    <ul> <li>Chronic apical periodontitis (incipient stage)</li> </ul> Signup and view all the answers

    'Severe throbbing pain increases on biting or at night' is a characteristic symptom of which condition?

    <ul> <li>Acute apical periodontitis (incipient stage)</li> </ul> Signup and view all the answers

    What leads to palpable fluctuant swelling in teeth affected by acute periapical abscess?

    <p>Pus penetration of the outer plate of bone</p> Signup and view all the answers

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