Dental Staining and Removal Quiz
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Questions and Answers

What is the primary cause of green stains on teeth?

  • Chromogenic bacteria and fungi (correct)
  • Excessive fluoride intake
  • Heavy metal exposure
  • Tetracycline medication

Which type of stain can become intrinsic over time?

  • Green stain
  • Black stain (correct)
  • Orange stain
  • Brown stain (correct)

What condition describes intrinsic stains originating from within the tooth structure?

  • Extrinsic stains
  • Developmental stains
  • Endogenous stains (correct)
  • Enamel hypoplasia

What is a common cause of black line stains on teeth?

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

Which aesthetic problem is associated with excessive fluoride intake during tooth development?

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

What type of staining is characterized by light brown to dark brown hues that can become intrinsic?

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

What defines intrinsic stains?

<p>They originate from within the tooth structure. (A)</p> Signup and view all the answers

Which type of stain is specifically identified with both smokeless tobacco and high plaque levels?

<p>Black stain (D)</p> Signup and view all the answers

What can lead to intrinsic staining following restorative procedures?

<p>Amalgam migration (C)</p> Signup and view all the answers

What is a potential outcome of intrinsic stains on a pulpless tooth?

<p>Slate grey appearance (C)</p> Signup and view all the answers

What is the primary characteristic of extrinsic stains?

<p>They are located on the outer surface of the tooth. (A)</p> Signup and view all the answers

Which factor is NOT a predisposing factor for extrinsic stains?

<p>Genetic predisposition (C)</p> Signup and view all the answers

What is the purpose of identifying the type of dental stain?

<p>To assist in the determination of aetiology and removal techniques. (B)</p> Signup and view all the answers

Which of the following options best describes intrinsic stains?

<p>They originate from internal sources. (B)</p> Signup and view all the answers

What is a common cause of extrinsic stains?

<p>Topical agents like foods and beverages. (A)</p> Signup and view all the answers

How do N2-type dental stains arise?

<p>The chromogen changes color after binding to the tooth. (A)</p> Signup and view all the answers

What is one reason for removing dental stains?

<p>To prevent plaque retention. (B)</p> Signup and view all the answers

Which of the following is an example of an indirect dental stain?

<p>Stains from cooking oils. (A)</p> Signup and view all the answers

Which method can be used to reduce intrinsic stains?

<p>Whitening treatments. (B)</p> Signup and view all the answers

Which bacteria is commonly associated with extrinsic staining?

<p>Streptococcus mutans (D)</p> Signup and view all the answers

Flashcards

Extrinsic Stain

Stain on the outer surface of a tooth, caused by external factors.

Intrinsic Stain

Stain originating from within the tooth structure.

Extrinsic Stain Removal

Methods to remove stains on the tooth surface.

N2-type Stain

Stain where the stain-causing substance changes color when it binds to the tooth.

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N3-type Stain

Stain where a colorless substance changes to a colored substance after binding to the tooth.

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Predisposing Factor

A factor that makes a person more likely to develop a condition (like stain).

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Poor Oral Hygiene

Lack of proper cleaning of the teeth and mouth.

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Stain Removal Benefits

Improved appearance and reduced risk of plaque buildup.

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Stain Identification

Determining the exact cause or source of a stain to ensure effective treatment or prevention.

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Classification of Stains

Categorization of stains based on their origin (internal or external).

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Yellow Stain

A dull yellow discoloration of teeth caused by retained plaque, common in all ages, indicating poor oral hygiene.

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Green Stain

Yellowish-green to dark green discoloration, caused by chromogenic bacteria and fungi that thrive in light.

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Brown Stain

Light to dark brown tooth discoloration, potentially becoming intrinsic.

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Black Line Stain

Continuous or interrupted dark brown/black stain following tooth contours, potentially from chromogenic bacteria.

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Metallic Stain

Discoloration caused by metal exposure (vitamins, oral iron tablets, or factory dust).

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Black Stain

Brown pigment from smokeless tobacco, paan, or betel nut, worsened by high plaque levels.

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Dental Fluorosis

Enamel alterations due to excessive fluoride intake during development.

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Dentinogenesis Imperfecta

Disorder affecting dentin development, causing translucent, bluish-grey to brown teeth.

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Study Notes

Dental Staining and Removal

  • Images of stained teeth were shown to grab attention
  • Learning Outcomes for GDC are listed
    • 1.1, 1.1.1, 1.1.8, 1.2.1, 1.2.2, 1.2.4, 1.5.3, 1.5.5, 1.7.3, 1.7.7, 1.7.8, 1.9.1, 1.10.2, 1.10.3, 1.10.4, 1.10.5, 1.10.6, 5.2
  • Formative assessment involves completing a workbook.
  • Classification of stains:
    • Intrinsic: Originates from within the tooth's structure.
    • Extrinsic: Originates from outside the tooth.
  • Types of dental stains are not all the same.
    • Some are directly on the hard or soft deposits of the teeth
    • Some are within the tooth’s structure
  • Correctly identifying the type of stain will help with removal/prevention
  • Examples of extrinsic stains include:
    • Yellow
    • Green
    • Brown
    • Orange
    • Black
    • Metallic
    • Black lines
  • Extrinsic stains are on the tooth’s outer surface, caused by topical or extrinsic agents and can be removed, examples include coffee, tea, wine, and tobacco.
  • N1-type dental stains bind to the tooth surface via ion exchange.
    • Examples include bacterial adhesion to pellicle, tea, coffee, metals, and wine.
  • N2-type dental stains have a chromogen that changes color after binding, such as aged food.
  • N3-type dental stains involve a colorless material that undergoes a chemical reaction to create a stain, such as browning foods high in carbohydrates or sugars, cooking oils, baked products, and fruit.
  • Predisposing factors for staining include:
    • Enamel defects
    • Salivary dysfunction
    • Poor oral hygiene
    • Microscopic pits and fissures
    • Bacteria
  • Causative agents for extrinsic stains include foods like coffee, tea, and red wine. Smoking and other habits like chewing tobacco may also cause staining.
  • Stains can become a nidus for plaque retention, so removal is important for aesthetic reasons.
  • Stains may indicate poor oral hygiene in patients.
  • Methods for removing extrinsic stains include:
    • Good oral hygiene
    • Polishing
    • Debridement/PMPR
    • Power-driven scaler/air polishing
    • Bleaching/Whitening
  • Methods for removing intrinsic stains include:
    • Vital bleaching
    • Cosmetic dentistry/veneers
    • Micro abrasion
    • Non vital bleaching
    • Composite resin restorations
  • Some techniques available for stain removal were shown in images
  • Final thoughts on why stains need to be removed:
    • Stain is unsightly
    • Stain is rough and promotes plaque retention
    • Could be covering calculus (tartar)

Further Reading

  • Articles and videos related to intrinsic and extrinsic tooth discoloration.

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Related Documents

Dental Staining and its Removal PDF

Description

Test your knowledge on dental staining and removal techniques. This quiz covers the classification of intrinsic and extrinsic stains, their causes, and methods for prevention and removal. Gain insights into the types of dental stains and improve your understanding of oral hygiene practices.

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