Causes of Pulp and Periapical Injuries in Endodontics

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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?

Caries (A) Signup and view all the answers

What does pulpal inflammation extend across?

The apical foramen (B) Signup and view all the answers

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

Normal periapical tissues (C) Signup and view all the answers

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

A pulpal irritant (B) Signup and view all the answers

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

'Normal Periapical Tissues' (B) Signup and view all the answers

What is the main focus of pulpoperiapical pathosis?

'Pulp extirpation' (B) Signup and view all the answers

Which of the following contribute to Pulpoperiapical diseases etiology?

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

What is responsible for the inflammatory response in Pulpoperiapical Pathosis?

Pulpal irritants (A) Signup and view all the answers

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

Teeth with pulpal inflammation (B) Signup and view all the answers

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

Periapical cyst (B) Signup and view all the answers

What distinguishes a periapical granuloma from a chronic apical abscess?

Well-defined radiolucent area surrounded by radioopaque margins (A) Signup and view all the answers

What is the characteristic clinical feature of chronic periapical abscess?

Pus draining through a sinus tract (B) Signup and view all the answers

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

Condensing osteitis (A) Signup and view all the answers

What is the most appropriate treatment for periapical cyst?

Surgical removal of the cyst (B) 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?

Periapical cyst (A) Signup and view all the answers

What defines condensing osteitis radiographically?

Radio-opaque appearance (B) Signup and view all the answers

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

Chronic periapical abscess (A) Signup and view all the answers

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

Some degree of mobility due to bone loss (C) Signup and view all the answers

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

Periapical cyst (B) Signup and view all the answers

What causes an increase in bone density in condensing osteitis?

Osteoblastic hyperactivity (C) Signup and view all the answers

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

Liquefactive necrosis of inner cells (A) Signup and view all the answers

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

Acute apical periodontitis (incipient stage) (B) Signup and view all the answers

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

Moderate to severe pain (D) Signup and view all the answers

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

Subacute periapical abscess (A) Signup and view all the answers

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

Periosteum and mucosa rupture (B) Signup and view all the answers

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

Granulomatous zone contamination (C) Signup and view all the answers

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

-ve or slight discomfort on percussion (A) Signup and view all the answers

What is the main cause of acute periapical abscess?

Cells of periapical tissue suffer from hypoxia & anoxia (D) Signup and view all the answers

What is the characteristic feature of symptomatic pulpoperiapical disease?

Increase intraperiapical pressure (C) 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?

Pus penetration of the outer plate of bone (C) Signup and view all the answers