14 Questions
What causes the gradual darkening of teeth?
Deposition of secondary dentin due to aging
What is the main cause of extrinsic staining?
Poor oral hygiene
What type of staining is caused by incorporation of chromatogenic material into dentin and enamel during odontogenesis or after tooth eruption?
Intrinsic staining
What is the latest option for tooth whitening?
Laser tooth whitening
What is the result of exposure to high levels of fluoride during tooth development?
Pre-eruptive discoloration
What type of staining is a combination of both extrinsic and intrinsic staining?
Multifactorial staining
What is a primary advantage of bleaching procedures compared to restorative methods?
They are more conservative and simple to perform
What primarily determines the color of healthy teeth?
Translucency and color of dentin
What is the primary difference in color between primary and permanent teeth?
Primary teeth are bluish white, permanent teeth are grayish yellow or white
What type of discoloration occurs when an agent or stain damages the enamel surface of the teeth?
Extrinsic discoloration
What is the name of the type of veneers that is used to whiten teeth?
Composite veneers
What is the reason for teeth being more darker on cervical one third than at middle or incisal one-third?
Thickness of enamel is greater at the cervical third
What is a common cause of extrinsic discoloration?
Coffee, tea, red wine, carrots and tobacco
What are the three main ways to classify tooth discoloration?
Extrinsic, intrinsic, and combination
Study Notes
Tooth Discoloration
- Tooth discoloration varies in etiology, appearance, localization, severity, and adherence to tooth structure
- There are different types of tooth whitening options available, including:
- Office bleaching procedures
- At-home bleaching kits
- Composite veneers
- Porcelain veneers
- Whitening toothpastes
Color of Natural Healthy Teeth
- Teeth are polychromatic, meaning color varies among the gingival, incisal, and cervical areas
- Color of healthy teeth is primarily determined by:
- Translucency and color of dentin
- Color of enamel covering the crown
- Translucency of enamel, which varies with different degrees of calcification
- Thickness of enamel, which is greater at the occlusal/incisal edge and thinner at the cervical third
Classification of Discoloration
- Discoloration may be classified as:
- Extrinsic discoloration
- Intrinsic discoloration
- Combination of both
Extrinsic Discoloration
- Occurs when an agent or stain damages the enamel surface of the teeth
- Causes of extrinsic discoloration include:
- Coffee, tea, red wine, carrots, and tobacco
- Can be easily removed by:
- Scaling
- Polishing
- Applying prophylactic cleaning
Intrinsic Discoloration
- Defined as endogenous staining
- Caused by incorporation of chromatogenic material into dentin and enamel during:
- Odontogenesis
- After tooth eruption
- Causes of intrinsic discoloration include:
- Exposure to high levels of fluoride
- Tetracycline administration
- Inherited developmental disorders
- Trauma to the developing tooth
- Cannot be removed by prophylaxis
Combination of Both
- Multifactorial in nature, e.g., nicotine staining
- Requires a variety of tooth whitening options, including:
- Over-the-counter whitening systems
- Whitening toothpastes
- Laser tooth whitening
This quiz covers the causes and types of tooth discoloration, as well as various whitening options including bleaching procedures and restorative methods. Learn about conservative and cost-effective approaches to address discolored teeth.
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