Dental Anatomy - Sheet 12

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Questions and Answers

What type of movements does the TMJ allow?

Hinge and rotational movement (correct)
Only hinge movement
Only rotational movement
No movement

The occlusal anatomy of teeth is simple in humans.

False (B)

What is TMJ an abbreviation for?

Temporomandibular joint

The TMJ is specialized in humans and is involved in __________ movement.

hinge and rotation Signup and view all the answers

Match the following components of occlusal anatomy to their descriptions:

Molars = Teeth designed for grinding food Canines = Teeth for tearing food Incisors = Teeth for cutting food Premolars = Teeth that assist molars in grinding Signup and view all the answers

Which tooth structure increases the surface area of contact between the root and alveolar bone?

Trifurcated upper 6 (C) Signup and view all the answers

Incisal and occlusal forms of the teeth have no effect on jaw movements.

False (B) Signup and view all the answers

What is the primary focus when comparing human jaw movements to those of animals?

The relation of tooth form and jaw relation. Signup and view all the answers

The ___ increases surface area of contact between the root and alveolar bone.

trifurcated upper 6 Signup and view all the answers

Match the following terms with their descriptions:

Canine = Pointed tooth used for tearing Trifurcated upper 6 = Has three roots for stability Incisal = Front teeth designed for cutting Occlusal = Surface for biting and chewing Signup and view all the answers

What forms the apex of the triangle in dental anatomy?

The contact area of two teeth (D) Signup and view all the answers

The base of the triangle in dental anatomy is located at the contact area of the two teeth.

False (B) Signup and view all the answers

Where is the base of the triangle located in dental anatomy?

At the alveolar process between adjacent teeth. Signup and view all the answers

The sides of the triangle in dental anatomy are formed by the __________ of the teeth.

proximal surfaces Signup and view all the answers

Match the parts of the triangle in dental anatomy with their descriptions:

Base = Located at the alveolar process between adjacent teeth Sides = Formed by the proximal surfaces of the teeth Apex = At the contact area of the two teeth Signup and view all the answers

What does the facial view help to determine?

Relative position of the contact areas (A) Signup and view all the answers

The facial view shows the position of contact areas in a mesiodistally direction.

False (B) Signup and view all the answers

What areas do the contact areas relate to in a facial view?

Cervicoincisally and cervico-occlusally Signup and view all the answers

The facial view gives the relative position of the contact areas _ and _ .

cervicoincisally, cervico-occlusally Signup and view all the answers

Match the following descriptions with their terms:

Cervicoincisally = Vertical position from the cervical line to the incisal edge Cervico-occlusally = Vertical position from the cervical line to the occlusal surface Facial view = A perspective showing the front of the tooth Contact areas = Points where adjacent teeth touch Signup and view all the answers

Which geometric figure is NOT used to outline tooth crown aspects?

Square (C) Signup and view all the answers

The Curve of Spee is viewed from a coronal aspect.

False (B) Signup and view all the answers

Name the two types of imaginary occlusal curves discussed.

Curve of Spee and Curve of Wilson Signup and view all the answers

The Curve of Wilson is viewed from a __________ view.

coronal Signup and view all the answers

Match the imaginary occlusal curves with their descriptions:

Curve of Spee = Anteroposterior curve viewed laterally Curve of Wilson = Side-to-side curve viewed coronally Signup and view all the answers

What is one of the primary functions of embrasures during mastication?

To provide a spillway for the escape of food (B) Signup and view all the answers

Embrasures help prevent food from being forced through the contact area.

True (A) Signup and view all the answers

What is the effect of embrasures on the forces imparted on teeth during the reduction of hard food material?

They reduce the forces imparted on teeth. Signup and view all the answers

The extent of the curvature of the cervical line is greater in the direction than the direction in all teeth.

mesial, distal Signup and view all the answers

Match the following functions to their descriptions:

Provide spillway for food = Facilitates escape of food during mastication Reduce forces on teeth = Minimizes stress during chewing Prevent food forced through contact = Avoids food impaction between teeth Self-cleansing through saliva = Maintains oral hygiene Signup and view all the answers

Flashcards

Trifurcated upper 6

A type of tooth with three roots, also known as a molar with three roots. This type of tooth is more complex and can provide a stronger chewing force due to the increased surface area of its roots.

Canine

The canine tooth is designed for tearing and piercing food. Its sharp, pointed form allows for efficient tearing and helps guide jaw movements during chewing.

Tooth Form and Jaw Movements

The shape of the teeth and how they come together (occlusion) affect the way the jaw moves. This relationship can be understood by comparing the jaw movements of humans and animals, as different forms of teeth lead to distinct chewing patterns.

Occlusal Form

When teeth come together (occlude), the contact points between the teeth create a force that helps distribute pressure evenly on the jawbone. This is important for maintaining bone health and preventing damage to teeth.