Dental Medicine Quiz

What is the periodontium?

• A hard tissue

• A type of bone

• An investing and supporting attachment system of teeth

• A soft tissue

Answer explanation

The periodontium is an investing and supporting attachment system of teeth.

Which tissue covers the anatomical root of the tooth?

• Alveolar Bone

• Cementum

• Periodontal Ligament

• Gingiva

Answer explanation

The tissue that covers the anatomical root of the tooth is Cementum.

What is the significance of the trapezoidal outline of facial & lingual surfaces in protecting the periodontium?

• Facilitates cutting through food materials

• Allows for sufficient supporting alveolar bone

• Increases teeth strength against masticatory forces

• Prevents tooth decay

Answer explanation

Allows for sufficient supporting alveolar bone

What does the triangular outline of proximal aspects in anterior teeth help with?

• Preventing tooth decay

• Increasing teeth strength against masticatory forces

• Facilitating cutting through food materials

• Allowing the tooth to be self-cleansing

Answer explanation

The triangular outline of proximal aspects in anterior teeth allows the tooth to be self-cleansing by aiding in the removal of food particles and debris.

What is the significance of the rhomboid outline of proximal surfaces of lower posterior teeth in protecting the periodontium?

• Keeps the root axis of mandibular & maxillary teeth parallel

• Allows the tooth to be self-cleansing

• Increases teeth strength against masticatory forces

• Facilitates cutting through food materials

Answer explanation

Keeps the root axis of mandibular & maxillary teeth parallel

What form allows the tooth to be self-cleansing?

• None of the above

• Triangle

• Trapezoid

• Rhomboid

Answer explanation

The form that allows the tooth to be self-cleansing is a Triangle shape.

What happens if the mandibular crowns and roots have the same relation as the maxillary ones?

• Allows for sufficient supporting alveolar bone

• Teeth strength decreases

• Facilitates cutting through food materials

• Upper & lower cusps would hit and clash during function

Answer explanation

Upper & lower cusps would hit and clash during function

What is the significance of the trapezoidal outline of proximal surfaces of upper posterior teeth in protecting the periodontium?

• Prevents tooth decay

• Allows the tooth to be self-cleansing

• Increases teeth strength against masticatory forces

• Facilitates cutting through food materials

Answer explanation

The trapezoidal outline of proximal surfaces of upper posterior teeth increases teeth strength against masticatory forces, helping to protect the periodontium.

What does the trapezoidal outline of proximal surfaces of lower posterior teeth help with?

• Preventing tooth decay

• Facilitating cutting through food materials

• Increasing teeth strength against masticatory forces

• Allowing the tooth to be self-cleansing

Answer explanation

The trapezoidal outline of proximal surfaces of lower posterior teeth helps in facilitating cutting through food materials.

What does the triangular outline of proximal aspects in anterior teeth increase?

• Teeth strength against masticatory forces

• Tooth decay

• Self-cleansing ability

• Cutting through food materials

Answer explanation

The triangular outline of proximal aspects in anterior teeth increases teeth strength against masticatory forces.