Biology

Dental and Oral Biology

967 Questions

Dental and Oral Biology focuses on the structure, development, and function of teeth and oral tissues. It covers key concepts like dental formulas, tooth eruption, and common oral diseases. These topics are essential for medical and biology entrance examinations.

Dental formulaTooth anatomyMilk teethOral diseasesTooth decay

Dental and Oral Biology Questions

Multiple choice

Which dental instrument is used to measure the depth of a periodontal pocket?

  1. Periodontal probe

  2. Ruler

  3. Caliper

  4. Micrometer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A periodontal probe is a dental instrument used to measure the depth of a periodontal pocket, which is the space between the tooth and the gum.

Multiple choice

What is the function of a dental articulator?

  1. To hold the dental impression

  2. To mix amalgam

  3. To adjust the occlusion of teeth

  4. To sterilize dental instruments
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A dental articulator is a device used to adjust the occlusion of teeth, which is the way the upper and lower teeth come together.

Multiple choice

Which dental instrument is used to remove excess cement from a tooth after a crown or bridge has been placed?

  1. Cement remover

  2. Scaler

  3. Explorer

  4. Curette
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A cement remover is a dental instrument used to remove excess cement from a tooth after a crown or bridge has been placed.

Multiple choice

Which dental instrument is used to apply fluoride to the teeth?

  1. Fluoride applicator

  2. Scaler

  3. Explorer

  4. Curette
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A fluoride applicator is a dental instrument used to apply fluoride to the teeth in order to prevent cavities.

Multiple choice

What is the function of a dental handpiece?

  1. To hold the dental bur

  2. To mix amalgam

  3. To adjust the occlusion of teeth

  4. To sterilize dental instruments
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A dental handpiece is a device that holds the dental bur and rotates it at high speed.

Multiple choice

Which dental instrument is used to sterilize dental instruments?

  1. Autoclave

  2. Scaler

  3. Explorer

  4. Curette
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An autoclave is a device used to sterilize dental instruments by exposing them to high pressure steam.

Multiple choice

Which dental instrument is used to whiten teeth?

  1. Bleaching tray

  2. Scaler

  3. Explorer

  4. Curette
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A bleaching tray is a dental instrument used to hold bleaching gel against the teeth in order to whiten them.

Multiple choice

What type of toothbrush is best for cleaning your teeth?

  1. Soft-bristled toothbrush

  2. Medium-bristled toothbrush

  3. Hard-bristled toothbrush

  4. Electric toothbrush
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A soft-bristled toothbrush is the best choice for cleaning your teeth because it is gentle on your gums and enamel, while still being effective at removing plaque and bacteria.

Multiple choice

Which of the following is a common cause of tooth decay?

  1. Plaque

  2. Fluoride

  3. Vitamin C

  4. Calcium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plaque is a sticky film of bacteria that forms on teeth and can lead to tooth decay and gum disease.

Multiple choice

Which dental disease is characterized by inflammation and bleeding of the gums?

  1. Tooth decay

  2. Gum disease

  3. Oral thrush

  4. Canker sores
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gum disease is a common condition that affects the gums and can lead to tooth loss if left untreated.

Multiple choice

What is the term for a cavity in a tooth?

  1. Caries

  2. Pulpitis

  3. Abscess

  4. Gingivitis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Caries is the medical term for a cavity or hole in a tooth.

Multiple choice

What is the term for a condition in which the gums recede from the teeth?

  1. Gingivitis

  2. Periodontitis

  3. Recession

  4. Erosion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Recession is a condition in which the gums recede from the teeth, exposing the roots.

Multiple choice

What is the term for a small, painful ulcer that can occur in the mouth?

  1. Canker sore

  2. Cold sore

  3. Herpes simplex virus

  4. Aphthous ulcer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Canker sores are small, painful ulcers that can occur in the mouth.

Multiple choice

What is the term for a condition in which the teeth become worn down?

  1. Attrition

  2. Abrasion

  3. Erosion

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Attrition, abrasion, and erosion are all conditions in which the teeth become worn down.

Multiple choice

Which of the following is a common cause of tooth sensitivity?

  1. Gum recession

  2. Tooth decay

  3. Cracked tooth

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gum recession, tooth decay, and cracked tooth can all cause tooth sensitivity.