❌M3 Quiz 2 Chapter 3 & 4 - Dental Anatomy - Term 3

What teeth are the canines?

6, 11, 22, 27

Canines are also called__________

Cornerstones of the mouth.

When the overlapping canines cause the posterior teeth to separate it is called?

Canine Guidance

The facial height of contour is in the ________________ (as with all teeth)

Cervical Third of the Tooth

From the proximal view, canine crowns (like all incisors) are _________.

Wedge or Triangular Shaped

From the facial/labial view, the crowns of canines resemble a ____________.

Five Sided Pentagon

Maxillary canines have a ______.

Sharper, more acute angle (tip).

Mandibular canines have a __________.

Cusp angle (tip) more blunt.

The mesial cusp ridge (MCR) is _____.

Almost Horizontal

Like all incisor teeth, canines form from _________ lobes.

4

The mesial cusp ridge of a mandibular canine is nearly __________.

Horizontal

The mesial root and crown on a mandibular canine contours ___________.

Line up and are relatively straight.

The mandibular canine from the lingual view is _________.

Smoother

The cingulum on the mandibular canine is ________.

Centered or distal and less prominent.

The maxillary canine facial height of contour is _________ as with all teeth.

In the cervical third.

On the maxillary mandibular canine from the incisal view the distal half of the crown is _______.

Pinched In

The maxillary canines have __________ on the _________.

Facets on the lingual surface.

On the mandibular canine from the incisal view, the distal half of the crown _______.

The pinch is minimal.

The mandibular canines have ______ on the labial-incisal of a _______ ridge.

Facet, Cusp

How many premolars are there?

8 - 4 on top 4 on bottom.

Premolars develop from ______ facial lobes (like anterior teeth).

3

Premolars develop from _______ lingual lobes. (corresponding to one or two lingual cusps)

1 or 2

Two cusped premolars form ______ lobes. (the same as all anterior teeth)

4

A transverse ridge is made up of ________ triangular ridges.

2

Maxillary premolars are what shape?

Oblong or Rectangular

Mandibular premolars are what shape?

Closer to square.

Maxillary first premolar crown is what shape?

Pentagon

Traits that distinguish maxillary first premolars.

- Sharper buccal cusp tips

- Mesial cusp ridge is longer than distal

- Prominent buccal ridge

- More crowns taper from contacts

- Lingual cusp obviously shorter

- Crown tapers toward the lingual

Maxillary first premolars have:

Prominent shoulders (junctions between the cusp slopes and the proximal contour of the crown)

The maxillary first premolar is the only premolar to likely have _________.

Bifurcated Roots

The mesial marginal ridge of the maxillary first premolar is almost always:

Crossed by a mesial marginal ridge groove starting on the root surface and extending onto the mesial crown surface.

The mesial surface of the cervical part of the crown has a ________.

Pronounced concavity (fossa).

The mesial crown concavity is continuous with the:

Adjacent deep mesial root depression.

The mesial crown and root depression is a:

Pronounced concavity (fossa) on the cervical part of the mesial surface of the crown.

The mandibular second premolar is the only premolar likely to have what?

Three Cusps (one buccal and two lingual)

The lingual cusp tip of the mandibular first premolar is:

Much smaller than the buccal cusp, often non-functional.

Only mandibular second premolars with two lingual cusps will have what?

Linear depression (lingual groove)

Most mandibular first premolars have a ____________________ crossing onto the mesiolingual surface.

Mesiolingual Groove

Mandibular right second premolar has what pattern?

Y-shaped groove pattern on 3 cusp type.

On a two cusp mandibular second pre-molar the groove pattern is what?

H or U-Shaped

On a three cusp mandibular second premolar the lingual groove forms what pattern?

Y shaped pattern

A three cusp mandibular second premolar has:

3 Cusps

- Buccal

- Mesiolingual

- Distolingual

The three cusp type mandibular second premolar can be:

Wide in the lingual half (or even wider).