Dental Arches

When is the primary dentition considered complete?

• 12-18 months

• 20-24 months

• 30-36 months

• 40-48 months

Which statement about the form of the primary dental arch is correct?

• Constantly changes with age

• Segment of a circle

• Remains relatively constant in width and length

• Follows a square pattern

What is the terminal plane in primary dentition?

• Curve of Spee

• Flush or straight

• Edge-to-edge

• U-shaped

Which sequence best describes the eruption of maxillary permanent teeth?

• 1-2-3-4-5-6-7-8

• 6-1-2-3-4-5-7-8

• 8-7-6-5-4-3-2-1

• 1-3-2-4-5-6-7-8

Which form is NOT a main variation of dental arch form?

• Elliptic

• U-shaped

• Triangular

• Hyperbolic

Which curve follows the buccal cusp tips of premolars and molars?

• Curve of Wilson

• Monson curve

• Curve of Spee

• Elliptic curve

What defines the Monson curve?

• Flat occlusal surface

• Sphere 8 inches in diameter

• Square plane of occlusion

• Straight curve connecting all canines

What is the first part to resorb after tooth loss?

• Facial skeleton

• Alveolar base

• Alveolar process

• Mental foramen

What happens to the jaw arch after resorption in the upper arch?

• Widening

• Deepening

• Narrowing

• Flattening

What is the 'neutral space' occupied by?

• Tongue only

• Dental arches

• Buccal mucosa

• Lips