CH 3&4 Flashcards
Canines and premolars
The mesial surface of the canine is in contact with the distal surface of the _____
lateral incisor
What is the longest teeth in each arch?
canines
Function of canines?
tear food
prominent labial ridge of the canine is more prominent on which arch?
Maxillary
prominent labial ridge of the canine is more prominent on which arch?
Maxillary
Which canine has a sharper cusp angle?
Maxillary canine is more acute (sharper) while Mandible cusp angle is more blunt
Mesial cusp ridge of the canine is shorter than distal cusp ridge.
True or false.
True
Convex?
Concave?
Convex= rounder Concave= caved in
How many lobes does the canine develop have?
3 facial, 1 lingual= 4
The mandibular canine appears longer and narrower than the crown of the maxillary canine?
True or False
True
The mesial contact area of the maxillary canine is located at the ____
junction of the incisal and middle thirds
The distal contact area of the maxillary canine is located at the _____. And it touches what tooth?
middle third.
first premolar.
The mesial contact area of the mandibular canine is located at the ____
Incisal third
Does canines have cingulums?
yes
The distal contact area of the mandibular canine is located at the _____
junction of the incisal and middle third
Labial view?
The facial view of anterior teeth (incisors and canines)
Proximal view?
Side view
Occlusal surface?
chewing surface
Lingual view?
Towards tongue
Mesial and Distal side of canines has root depressions. Which side is deeper?
Distal has a deeper depression than mesial
Which premolar has the Mesial cusp ridge of the buccal cusp longer than the distal cusp ridge.
Maxillary first premolar
Which premolar has a nonfunctioning lingual cusp?
Mandibular first premolar
Two premolars that most frequently have a groove crossing the mesial marginal ridge or one groove just lingual to it.
Maxillary first premolar, Mandibular first premolar
Which premolar has a depression in the cervical one third of the mesial side of the crown and root?
Maxillary first premolar
Which maxillary premolar has the longer sharper buccal cusp?
Maxillary first premolar
Which is the largest maxillary premolar?
Maxillary first premolar
Which mandibular premolar has the longest and sharpest buccal cusp?
Mandibular first premolar
Maxillary premolar that is most symmetrical (occlusal view)
Maxillary second premolar
Two premolars without a central groove?
Mandibular first AND second premolar
First mandibular premolar has a prominent transverse ridge.
True
Which teeth are likely to have their Crowns tipped lingually with respect to the root axis line (proximal view)?
Mandibular first AND second premolars
From buccal view, crown is tipped distally from the root axis?
Mandibular first AND second premolars
Mesial marginal ridge is more cervically located than its distal marginal ridge?
Mandibular first premolar
Which premolar has no transverse ridge?
Mandibular second premolar
Which premolar has the longest central groove?
Maxillary first premolar
Which premolar has two major cusps almost the same size and length?
Maxillary second premolar
Which premolar is most likely to have two roots?
Maxillary first premolar
Crest of curvature on a premolar?
cervical third
Mesial marginal ridge cuts through the central groove.
true
What makes up the occlusal table?
Cusps and ridges
A depression found on the lingual surface of a canine bounded by the lingual ridge, distal cusp ridge, distal marginal ridge, and distal third of the cingulum is called a _____ ______.
distolingual fossa
Whats the ONLY single rooted tooth has three cusps?
Mandibular second premolar
One permanent premolar has a pronounced concavity on the cervical part of the crown. Which premolar and which surface is this?
Mesial surface of the maxillary first premolar
When considering all premolars, which cusp is least developed?
Lingual cusp of the mandibular first pre molar
Which type of premolar is most likely to have separate mesial and distal pits with a pronounced transverse ridge but without a distinct central groove (so carious pits are often restored separately)?
Mandibular first premolar
Which premolar has a central fossa and two triangular fossae.
Mandibular second premolar (three-cusp)
The crown of the permanent maxillary canine is ________the crown of the permanent mandibular canine.
Shorter than
When viewed from the facial, what is the geometric shape of a premolar?
Pentagon shape
Compared to a maxillary first premolar, a maxillary second premolar is most likely to exhibit:
A shorter central groove
With the long axis of the tooth vertical, which ridge is most nearly horizontal?
A mesial cusp ridge of the mandibular
When holding an extracted maxillary and mandibular canine from the same mouth, which characteristic(s) can be used to distinguish the maxillary canine?
The cusp of the maxillary canine is more pointed
Two premolars that most frequently have a groove crossing the mesial marginal ridge or one groove just lingual to it.
Maxillary first premolar AND mandibular first premolar
A Y-shaped occlusal groove pattern is characteristic of a:
Mandibular second premolar
Which of the following teeth is most likely to have a central fossa and a lingual groove?
Mandibular second premolar
Which posterior tooth is MOST likely to have a mesial longitudinal root depression more prominent than the distal root depression?
Maxillary first premolar
The mandibular second premolar often exhibits a linear depression extending lingually from the central pit, separating the two lingual cuspsAns: This linear depression is known as the _______ ______.
Lingual groove
From the proximal view, which premolar most closely resembles a canine?
Mandibular first premolar
If a mandibular second premolar has three cusps, what are they called?
mesiolingual, distolingual, buccal
Which premolar has two major cusps almost the same size and length?
Maxillary second premolar
Which is the largest maxillary premolar?
Maxillary first premolar
On an unworn permanent canine (maxillary or mandibular), the distal cusp ridge is slightly__________ than the mesial cusp ridge.
longer
When the maxillary first premolar has more than one root, which description applies?
There are normally two roots: a facial and lingual
The transverse ridge extends as a continuous elevation in a buccolingual direction to unite the ______ ______ of the buccal and lingual cusps of a mandibular first premolar.
Triangle ridge
Which anterior tooth has a mesial cusp slope that is more nearly horizontal?
Mandibular canine
What is a fossa?
A depression or concavity on an area of the crown of the tooth