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 (A)</p> Signup and view all the answers

What does pulpal inflammation extend across?

<p>The apical foramen (B)</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 (C)</p> Signup and view all the answers

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

<p>A pulpal irritant (B)</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' (B)</p> Signup and view all the answers

What is the main focus of pulpoperiapical pathosis?

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

Which of the following contribute to Pulpoperiapical diseases etiology?

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

What is responsible for the inflammatory response in Pulpoperiapical Pathosis?

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

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

<p>Teeth with pulpal inflammation (B)</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 (B)</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 (A)</p> Signup and view all the answers

What is the characteristic clinical feature of chronic periapical abscess?

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

What is the most appropriate treatment for periapical cyst?

<p>Surgical removal of the cyst (B)</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 (A)</p> Signup and view all the answers

What defines condensing osteitis radiographically?

<p>Radio-opaque appearance (B)</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 (A)</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 (C)</p> Signup and view all the answers

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

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

What causes an increase in bone density in condensing osteitis?

<p>Osteoblastic hyperactivity (C)</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 (A)</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) (B)</p> Signup and view all the answers

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

<p>Moderate to severe pain (D)</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 (A)</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 (B)</p> Signup and view all the answers

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

<p>Granulomatous zone contamination (C)</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 (A)</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 (D)</p> Signup and view all the answers

What is the characteristic feature of symptomatic pulpoperiapical disease?

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

Which condition results from blockage of sinus drainage?

<ul> <li>Subacute periapical abscess (B)</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) (D)</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) (A)</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 (C)</p> Signup and view all the answers

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