Chapter 1 & 2 Flashcards
Two triangular ridges make up what?
Transverse ridge
How many teeth are present in a complete adult dentition?
32
What teeth are not present in a primary dentition?
First Premolar
In an adult mouth, what are the posterior teeth called?
Molars and Premolars
How many teeth are present in a primary dentition?
28
What is the outer layer of crown is?
Enamel
What is the occlusal surface?
The chewing surface of posterior teeth
Another word for facial surface for anterior teeth? Posterior?
Posterior teeth has a Buccal surface.
Anterior teeth has a Labial surface.
When permanent teeth start to erupt what are they called?
Mammalians
The periodontal ligament attaches the alveolar bone to what tooth tissue?
Cementum
Most sensitive area of the tooth?
Dentin
What is the apex of the root?
Tip of the end of the root
What are the smallest teeth in the mouth?
24, #25
Which tooth has the shortest root relative to the crown?
8 and #9
All anterior teeth were formed by ?
frontal lobes
What are the functions of incisors?
- Cut food
- Articulate speech
- Support lips (esthetics)
- Guide mandible during movement
Which incisor crown is the longest?
Maxillary central incisor crown is the longest incisor crown
In an adult mouth with ideal alignment and an ideal occlusion, which surface of tooth #16 touches touch #17?
Occlusal
One facial cups of a premolar (or molar) has four ridges: a buccal ridge, a mesial cusp ridge, a distal cusp ridge, and a____
Triangular ridge
The marginal ridges and cingulum of the permanent maxillary centra incisor are ______ than those of the permanent mandibular incisor.
More prominent
All but one type of incisor have a mesioincisal angle more square (more acute) than the distal angle. Which type is the EXCEPTION?
Mandibular central incisor
How many teeth in the complete adult dentition have a labial surface?
Twelve
Four structures that comprise the periodontium?
Gingiva
Alveolar bone
Cementum
Periodontal ligament
The broadest (faciolingually) incisal or occlusal embrasure is normally found between which permanent maxillary teeth?
First premolar and second premolar
In a mouth with ideal tooth alignment and in ideal occlusion, which surface of tooth #8 touches tooth #9?
mesial
The faciolingual length of a tooth can be measured when viewing the tooth from several views. Which view would NOT be appropriate when measuring the faciolingual dimension?
labial
The distal contact area of the permanent maxillary lateral incisor is located in the _____
Center of the middle third
Compared to permanent maxillary lateral incisors, maxillary central incisors are more likely to exhibit____
The cingulum positioned distally
A distinguishing deeper root concavity on the mandibular lateral incisor is on the ____ root surface
Distal root
The distal contact area of the permanent maxillary central incisor is located in the _______
Junction of the incisal and middle thirds
Which incisor is considered the most symmetrical?
Mandibular central incisor
_____ are rounded incisal extensions of the labial lobes found on newly erupted or unworn permanent incisor teeth
Mamelons
A conical mass found on the occlusal surface of posterior teeth and that also constitutes the incisal surface of a canine is called a _____
cusp
Viewed from the facial aspect, the mandibular lateral incisor is _______ mandibular central incisor
Wider mesiodistally than
On incisors, the number of lobes on the facial surface (which is the same as the number of mamelons on the incisal surface) is
Three
The facial and lingual height of contour of all anterior teeth is the cervical third of the tooth.
T or F
False
The borders or limits of the lingual fossa of the maxillary lateral incisor are the cingulum, the ________________, the ________________, and the _____________
distal marginal ridge;
incisal edge or ridge;
mesial marginal ridge
In ideal tooth alignment, what surface of tooth #16 touches tooth #15?
Mesial
Which characteristics are normally seen on ALL types of permanent incisors?
Facial and lingual crests of curvature are located in the cervical third
In a mesial view of a maxillary central incisor, vertical lines may divide the crown into thirds called ____, ____, and _____.
Labial (or facial)
Middle
Lingual
What characteristics are seen most of the time on ALL permanent incisors?
The root is longer than the crown
Which tooth has the shortest root relative to its crown?
Maxillary central incisor
When viewed from the proximal, which tooth (and surface) has the greatest curvature of its cervical line (cementoenamel junction) when compared to all other teeth in the mouth?
8, mesial surface
The maxillary lateral incisor is smaller than the maxillary central incisor in all dimensions except root length.
False
