Dental Dental Anatomy — Questions and Answers
Question 1: How many permanent teeth does a typical adult have?
- 28
- 30
- 32 (Correct answer)
- 36
Correct answer: 32
Adults typically have 32 permanent teeth including 4 wisdom teeth. Without wisdom teeth, there are 28.
Question 2: What are the four types of teeth in the human mouth?
- Canines, molars, wisdom, front
- Incisors, canines, premolars, and molars (Correct answer)
- Upper, lower, left, right
- Baby, adult, wisdom, root
Correct answer: Incisors, canines, premolars, and molars
Incisors cut food, canines tear food, premolars (bicuspids) crush food, and molars grind food.
Question 3: What is dental enamel?
- The soft inner part of the tooth
- The hard outer covering of the crown — the hardest substance in the human body (Correct answer)
- A type of dental filling
- The root of the tooth
Correct answer: The hard outer covering of the crown — the hardest substance in the human body
Enamel is the mineralized outer layer protecting the crown. Despite being the hardest substance in the body, it can be eroded by acid and decay.
Question 4: What is the pulp of a tooth?
- The outer layer
- The innermost part containing nerves, blood vessels, and connective tissue (Correct answer)
- The chewing surface
- The gum tissue around the tooth
Correct answer: The innermost part containing nerves, blood vessels, and connective tissue
The pulp is the vital center of the tooth containing nerves and blood supply. When it becomes infected, a root canal may be necessary.
Question 5: What is the periodontal ligament?
- A dental tool
- The connective tissue that attaches the tooth root to the surrounding bone (Correct answer)
- A type of dental floss
- The nerve inside the tooth
Correct answer: The connective tissue that attaches the tooth root to the surrounding bone
The periodontal ligament connects the tooth root to the alveolar bone, providing cushioning during chewing and allowing slight tooth movement.
Question 6: How many roots does a typical upper first molar have?
- 1
- 2
- 3 (Correct answer)
- 4
Correct answer: 3
Upper first molars typically have three roots (two buccal and one palatal), while lower molars usually have two roots.
Dental Dental Anatomy
How many permanent teeth does a typical adult have?