Dental Hygiene Non-Carious Lesions

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What primarily causes dental caries?

Overbrushing leading to enamel wear

Acid-producing bacteria breaking down mineral structure (correct)

Plaque buildup on smooth enamel surfaces

Fluoride deficiency in saliva

What type of caries develops on healthy teeth?

Progressive caries

Primary caries (correct)

Root caries

Secondary caries

Which clinical site is most susceptible to caries initiation?

Root surfaces

Proximal contact areas

Pits and fissures (correct)

Smooth enamel surfaces

What is the process of decay progression through dentin characterized by?

Cone-shaped patterns of decay Signup and view all the answers

What results from poor oral hygiene related to smooth surface caries?

Buildup of plaque and decay Signup and view all the answers

Why do root caries progress more rapidly than other types of caries?

The root cementum is thin and offers minimal resistance Signup and view all the answers

What is the direction of decay for smooth surface caries?

Downward towards the pulp Signup and view all the answers

What is the irreversible type of caries that requires treatment through tooth preparation and restoration?

Cavitated caries Signup and view all the answers

What contributes significantly to the formation of pits and fissures in teeth?

The shape of pits and fissures trapping plaque Signup and view all the answers

Which type of caries progresses rapidly and leads to swift tooth damage?

Acute caries Signup and view all the answers

Toothbrush abrasion typically causes localized lesions on which part of the teeth?

Labial surface Signup and view all the answers

What characteristic is associated with chronic caries lesions as they progress?

Hard and darker Signup and view all the answers

Non-carious lesions can be caused by various factors. Which of the following is NOT a type of abrasion mentioned?

Nail-biting abrasion Signup and view all the answers

What is the main difference between incipient caries and arrested caries?

Incipient caries can be remineralized, whereas arrested caries are already remineralized. Signup and view all the answers

Which of the following best describes abrasion caused by improper brushing techniques?

It causes linear, smooth, polished localized lesions. Signup and view all the answers

What generally causes iatrogenic abrasion in dental contexts?

Faulty dental work or prosthetics Signup and view all the answers

What primarily leads to the characteristic wedge shape of abfractive lesions?

Compressive and tensile forces resulting in microfractures Signup and view all the answers

What is the primary consequence of severe attrition on teeth?

Loss of vertical dimensions of teeth Signup and view all the answers

How does enamel hypoplasia differ from enamel hypocalcification?

Hypoplasia shows opaque white areas, whereas hypocalcification appears chalky white Signup and view all the answers

What is a common psychological effect of tooth discoloration?

Negative social perception and self-image Signup and view all the answers

Which of the following best describes attrition?

It is the result of pathological parafunctional movements. Signup and view all the answers

In cases of enamel hypoplasia, which of the following features may be present?

Opaque white or brownish areas Signup and view all the answers

What typically results from improper function of ameloblasts during the formation of enamel?

Enamel hypoplasia Signup and view all the answers

What primarily causes extrinsic erosion of teeth?

Dietary acids in foods and beverages Signup and view all the answers

How might attrition affect proximal contact areas of teeth?

Flattening of proximal contours and decreased dimensions Signup and view all the answers

Which of the following is considered a lifestyle factor influencing dental erosion?

Type of food and beverage consumed Signup and view all the answers

What is abfraction primarily associated with?

Abnormal mechanical forces from faulty occlusion Signup and view all the answers

Which of the following best describes endogenous acidic agents?

Acids originating from the body, like gastric acids Signup and view all the answers

Which of the following products is most likely to cause dental erosion due to its low pH?

Sports drinks containing vitamin C Signup and view all the answers

What is a common consequence of exposure to exogenous acidic agents in the workplace?

Pathological loss of tooth structure Signup and view all the answers

Which of the following foods is NOT typically associated with dental erosion?

Salty snacks Signup and view all the answers

What effect does frequent regurgitation have on dental health?

Leads to generalized erosion of upper teeth Signup and view all the answers

Study Notes

Non-Carious Lesions

Non-carious lesions are tooth structure defects caused by factors other than bacteria.
These lesions require intervention to restore tooth structure.

Abrasion

Abrasion is the loss of tooth structure caused by friction.
Types:
- Toothbrush abrasion: Most common, caused by improper brushing.
- Pipe-smoking depression abrasion: Occurs at the latero-anterior portion of the arch.
- Toothpick abrasion: Caused by vigorous use of toothpicks.
- Occupational abrasion: Caused by habits like cutting sewing thread or holding nails with teeth.
- Iatrogenic abrasion: Caused by faulty dentistry.

Erosion

Erosion is the loss of tooth structure caused by chemical agents like acids.
Types:
- Exogenous acids:
  - Environmental factors: Industrial acids encountered at work, acidic pool water.
  - Dietary factors: Fruit acids, phosphoric acid from beverages and food.
  - Medications: Low pH oral hygiene products and medicine.
- Endogenous acids: Gastric acids due to regurgitation, common in bulimia.

Abfraction

Abfraction is a wedge-shaped cervical defect caused by excessive forces during chewing.
Occurs due to unbalanced occlusion, causing microfractures in the enamel at the cervical area.
Commonly associated with wear facets.

Attrition

Attrition is the mechanical wear of tooth surfaces caused by direct contact with other teeth.
It is a normal, age-related process that can be accelerated in cases of bruxism (tooth grinding).
Affects occlusal surfaces, leading to flattening and facet formation.
Can expose dentin and decrease tooth height.

Enamel Hypoplasia

Enamel hypoplasia is a defect in the enamel matrix formation during tooth development.
Caused by injury to ameloblasts, the cells responsible for enamel formation.
Results in opaque white or brownish areas, pits, or grooves on the enamel.

Enamel Hypocalcification

Enamel hypocalcification is a defect in the mineralization of the enamel.
Caused by injury to ameloblasts during the enamel mineralization stage.
The affected areas are chalky white but not structurally defective.

Discoloration

Tooth discoloration deviates from the individual's normal tooth shade and color.
Affects the individual's social and psychological well-being despite not being destructive.

Studying That Suits You

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

Description

This quiz covers non-carious lesions that affect tooth structure, including abrasion and erosion. Explore the different types of abrasion caused by various factors, such as brushing technique and habits. Understand the impact of chemical agents on dental health through erosion.