Dental Pulp Irritants and Infection
23 Questions
0 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

Gastric acid erosion is a type of microbial irritant that affects the pulp.

False

The pulp irritant classification includes only three categories: Microbial, Physical, and Chemical.

False

Incompatibility of dental materials is a type of physical irritant that affects the pulp.

False

The effects of acidic food and drink on the pulp are a type of chemical irritant.

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

Intrinsic factors, such as the speed of bacterial ingress, affect the response of the pulp to bacteria.

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

The population of microorganisms in carious dentin is highest in the deepest layers.

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

Low pH fruit juices are an example of intrinsic factors causing erosion.

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

Gastric acid erosion typically affects the facial surface of the lower teeth.

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

Silicate filling material can be used without liners without causing pulp tissue irritation.

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

Diet cola drinks are less erosive than regular cola drinks due to their lower sugar content.

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

Industrial acids in the air are a primary cause of erosion on the palatal surface of the upper teeth.

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

Taking hydrochloric acid through a straw or glass tube can prevent erosion on the labial surface of anterior teeth.

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

When the caries reaches within 0.5 mm of the pulp, there is a significant decrease in the extent of inflammation.

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

The virulence of bacteria is a factor that affects the pulp's resistance to inflammation.

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

Tooth preparation is an example of a chemical irritant that can cause pulp trauma.

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

The width of the cavity has no significant impact on the pulp.

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

The healthy pulp responds to caries by receding away from the pulp surface.

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

Pulp tissue can undergo rapid necrosis immediately after pulp exposure.

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

Abrasion is a type of tooth surface loss caused by bacterial activity.

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

Holding a pipe between the teeth is an example of a habit that can cause tooth wear in the presence of an abrasive medium.

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

Tooth brush abrasion is usually seen as a rounded notch in the gingival portion of the facial aspect of teeth.

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

Chewing on hard objects such as pens or pencils is a type of chemical irritant that affects the pulp.

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

Abrasion can be caused by improper brushing or other habits in the absence of an abrasive medium.

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

Study Notes

Abrasion

  • Abrasion is a type of chronic trauma that causes abnormal tooth surface loss due to direct frictional forces between the teeth and an external object or between contacting teeth in the presence of an abrasive medium.
  • Common causes of abrasion include improper brushing, holding a pipe between the teeth, tobacco chewing, and chewing on hard objects such as pens or pencils.
  • Tooth brush abrasion is the most common example, typically appearing as a sharp, wedge-shaped notch in the gingival portion of the facial aspect of teeth.

Pulp Response

  • The healthy pulp responds to abrasion by depositing a layer of reparative dentine over its pulp surface, walling it off.
  • The pulp response is related to the thickness and degree of calcification of the remaining dentine, as dentine permeability can be reduced by dentinal sclerosis and reparative dentine formation.
  • If the distance between the caries and the pulp is 1 mm or more, pulp inflammation may be negligible.
  • When the caries reaches within 0.5 mm of the pulp, there is a significant increase in the extent of inflammation.

Pulp Inflammation and Necrosis

  • If the reparative dentine is invaded by irritants such as bacteria or their toxins, the pulp becomes acutely inflamed.
  • After pulp exposure, bacteria colonies persist at the site of necrosis.
  • Pulp tissue may remain inflamed for a long period and may undergo eventual or rapid necrosis, depending on factors such as:
    • Virulence of bacteria
    • Host resistance
    • Amount of circulation
    • Lymph drainage

Physical Irritants

  • Mechanical irritants, such as tooth preparation (caries removal or crown preparation), can cause pulp trauma.
  • Over-cutting during cavity preparation can cause immediate necrosis, regardless of whether the pulp is exposed or not.
  • The width of the cavity, as well as its depth, affects the pulp.

Classification of Pulp Irritants

  • Pulp irritants can be classified into four categories:
    • Microbial
    • Physical
    • Irradiation
    • Chemical

Microbial Irritants

  • Microbial irritants include:
    • Caries
    • Periodontal disease
    • Contamination of an exposure of the pulp by microorganisms
    • Infection through the apical foramen (rare)
    • Bacterial microleakage
  • Microorganisms present in dental caries are the main source of irritation of dental pulp and periradicular tissues.
  • The response of the pulp to bacteria depends on factors such as the speed of bacterial ingress and the speed of progress of caries.

Erosion

  • Erosion is a type of demineralization of superficial hard tissues, typically evident on the facial or lingual surfaces of the tooth structure.
  • Causes of erosion include:
    • Extrinsic factors:
      • Industrial acids
      • Food and drink of acidic nature
      • Certain medications
    • Intrinsic factors:
      • Gastric acids
    • Chronic vomiting can affect the palatal surface of the upper teeth.

Filling and Lining Materials

  • Certain filling and lining materials can cause irritation of the pulp tissue, such as:
    • Silicate filling material
    • Acrylic filling material
  • Silicate filling material is extremely damaging to pulp tissue, especially when used without liners.

Studying That Suits You

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

Quiz Team

Related Documents

Pulp Irritants Lec 7 PDF

Description

Test your knowledge on the different types of pulp irritants that can cause injury and infection, including microbial, physical, irradiation, and chemical factors. Learn how caries, periodontal disease, and other factors can affect the pulp and lead to necrosis.

More Like This

HISTOLOGY COMBINED
78 questions
Histology of  Pulp
24 questions

Histology of Pulp

UserFriendlySagacity4401 avatar
UserFriendlySagacity4401
Dental Pulp Disease Overview
13 questions
Use Quizgecko on...
Browser
Browser