tophat questions Flashcards
What is the order of eruption for primary teeth?
central> lateral incisors> 1st molar> canines> second molar
Tooth number L is?
Left mandibular primary first molar
What tooth replaces #B?
Permanent maxillary right 1st premolar
How many teeth exist in the primary dentition?
8 primary incisors, 4 canines, 8 molars
Which primary tooth doesn’t resemble any tooth in the permanent dentition?
S
Which primary tooth resembles the permanent 1st molars?
A
Where is the primate space located?
Mesial to the maxillary canine and distal to the mandibular canine
What pediatric congenital condition do you find supernumerary teeth?
Ectodermal dysplasia
Which tooth is most commonly seen as a neonatal tooth?
Mandibular central incisor
Which tooth is not a succedaneous tooth?
Permanent molars
Which of the following best describes the occlusal outline of the maxillary first molar from an occlusal view?
Rhomboid
The primary cusp triangle of an adult maxillary first molar includes which cusp?
Mesiobuccal, distobuccal, and mesiolingual
Which cusp is the largest for maxillary molars?
Mesiolingual
Relative sizes of the cusps on the occlusal surface of maxillary first molar?
ML> MB>DB> DL> 5th cusp
From the buccal view, the mesial proximal contact of an adult second molar is located where on the crown?
Junction of occlusal and middle third
From the buccal view, the distal proximal contact of an adult maxillary first molar is located where on the crown?
Middle third
The adult maxillary first molars stamp cusp is which?
lingual cusp
The oblique ridge of the maxillary molars is formed by which anatomical features?
Distal cusp ridge of the mesiolingual cusp and triangular ridge of the distobuccal cusp
Which grooves DOES NOT originate in or crosses through the central pit of the adult maxillary second molar?
Distolingual
Order the locations of the furcations of the adult maxillary first molar in order from closest to the cervical line to farthest away from the cervical line?
Mesial>buccal>distal
The ridges present on the mesiolingual cusp of the maxillary first molars are?
ML triangular ridge
mesial cusp ridge of the ML cusp
distal cusp ridges of the ML cusp
On average, the distal furcation of the adult maxillary first molar is located how far below the cervical line?
5mm
On average, the mesial furcation of the adult maxillary first molar is located how far below the cervical line?
3mm
On average, the buccal furcation of the adult maxillary first molar is located how far below the cervical line?
4mm
Which of the following best describes the relative cusp size of the mandibular first molar from an occlusal view?
ML> DL> MB> DB> D
The largest fossa in the mouth?
Central fossa of the mandibular first molar
Which of the following best describes the occlusal outline of the mandibular first molar from an occlusal view?
Pentagon
Which cusp is the largest for the mandibular first molar?
Mesiolingual
What is the occlusal outline of the mandibular second molar from an occlusal view?
Rectangular
What ridges is NOT likely to be found on a permanent mandibular first molar?
Oblique ridge
What are the locations of furcations on the root of a permanent mandibular molar?
Midbuccal and midlingual
From which view is only one root visible on an extracted mandibular first molar?
Mesial
Which two permanent molars are most likely to have five cusps?
Maxillary first and mandibular first molar
Which statement is true regarding the proportions and shape of the crown of a permanent mandibular first molar?
The crown is wider mesiodistally than occlusocervically.
When viewed from the facial, what is the geometric shape of a canine?
Pentagon shaped
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
TRUE OR FALSE: The cingulum and marginal ridges of mandibular canines are more prominent compared to maxillary canines.
False
The crown of the permanent maxillary canine is ________the crown of the permanent mandibular canine.
shorter than
Would this statement apply to the maxillary or mandibular canines?
The crowns have prominent lingual ridges and fossae.
Maxillary canines
Which of the following is NOT normally a characteristic of a mandibular canine?
A. Wear from chewing will be seen more on the facial half of the incisal edge.
B. The curve of the cervical line on the distal is less pronounced than the curve of the cervical line on the mesial.
C. The cusp is sharper than the cusp of the maxillary canine.
D. The distal cusp ridge is longer than the mesial cusp ridge
C. The cusp is sharper than the cusp of the maxillary canine.
Where is the mesial contact of the permanent mandibular canine located?
Incisal third
When holding a maxillary and mandibular canine, which characteristic(s) can be used to distinguish the mandibular canine?
-A mandibular canine has a less prominent cingulum.
-The mesial side of a mandibular canine crown and root is relatively straight.
-The incisal edge of a mandibular canine is located lingual to the center of the tooth.
Which of the following roots is, on average, the longest?
A. Lingual root of a maxillary first molar
B. Root of a maxillary canine
C. Lingual root of a maxillary second molar
D. Roof of a mandibular canine
B. Root of a maxillary canine
The distal contact area of the maxillary canine is located in the ____ of the crown.
center of the middle third
Which of the following are the anatomic features of permanent maxillary central incisors?
1. Cingula
2. Mamelons
3. Cusp ridges
4. Marginal ridges
5. Cervical lines
6. Triangular ridges
- Cingula
- Mamelons
- Marginal ridges
- Cervical lines
The distal contact area of the permanent maxillary lateral incisor is located in the
center of the middle third
The distal contact area of the permanent maxillary central incisor is located in the
junction of the incisal and middle thirds
Which of the following groups of teeth are found in the same dental sextant?
8,9,10,11,12
20,21,22,23,24
5,6,7,8,9,10
1,2,3,4,5
1,2,3,4,5 (sextant 1)
Which of the anterior teeth is most likely to have a peg shaped crown?
Maxillary lateral incisors (#7, #10)
Compared to permanent maxillary lateral incisors, maxillary central incisors are more likely to exhibit the cingulum
positioned distally
True or False: Mamelons are rounded incisal extensions of the labial lobes found on newly erupted or unworn permanent incisor teeth.
True
What are the 4 tooth tissues from hardest to softest?
Enamel
Dentin
Cementum
Pulp
True or False: The maxillary lateral incisor is smaller than the maxillary central incisor in all dimensions except root length.
True
True or False: Mandibular incisors are likely to exhibit wear on the facial part of the incisal edge.
True
On the maxillary central incisor from the facial aspect the mesial incisal angle is:
usually sharper than the distal incisal angle
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
True or False: When viewed from the proximal (mesial or distal) - ALL incisor crown lingual outlines are S-shaped.
True
Which incisor is considered the most symmetrical?
Mandibular central incisor
Which tooth has the shortest root relative to its crown?
Maxillary central incisor
Which type of incisor does NOT have a mesioincisal angle more square than the distal angle?
Mandibular central incisor
Which incisor is normally the narrowest (mesiodistally)?
Mandibular central incisor
Which incisor has its mesial proximal contact area (crest of curvature) at the same level incisocervically as its distal contact due to its symmetry?
Mandibular central incisor
What feature can be used to distinguish if a tooth is a maxillary incisor when comparing a maxillary and mandibular incisor?
The maxillary crown has lingual ridges and fossa that are more prominent
From the incisal view, the labiolingual dimension is greater than the mesiodistal dimension on:
mandibular incisors
A transverse ridge is made up of which two ridges?
Two triangular ridges
How many molars are there in the mandible of a person with a complete set of his or her adult dentition?
Six
How many teeth in the complete adult dentition have a labial surface?
Twelve (U/L anteriors)
How many total premolars are there in the complete adult human dentition?
Eight
In a mouth with ideal tooth alignment and in ideal occlusion, which surface of tooth #8 touches tooth #9?
Mesial
Most buccal cusps have four ridges. Which ridge is NOT a part of a cusp?
Marginal ridge
The spaces formed around the point of contact between proximal surfaces of adjacent teeth are called
Embrasures
What is the universal number for the permanent mandibular left first molar?
19
When referring to mandibular anterior tooth surfaces, what term may correctly be used to refer to a facial surface?
Labial
Which tissue makes up the majority of the bulk of a tooth?
Dentin
Which of the following traits does NOT apply to the maxillary first premolar?
- It usually has a mesial marginal ridge groove.
- It has a mesial crown depression.
- It has a greater cervical line curvature on the mesial than on the distal.
- The lingual cusp tip is positioned or “bent” toward the mesial.
- the mesial proximal contact is typically located more cervically than the distal proximal contact
THE MESIAL PROXIMAL CONTACT IS LOCATED MORE CERVICALLY THAN IS THE DISTAL PROXIMAL CONTACT
Which tooth is most likely to have two roots?
Maxillary first premolar
Which premolar has a mesial root depression (cavitation) deeper than the distal root depression?
Maxillary first premolar
If a mandibular second premolar has three cusps, what are they called?
Mesiolingual, distolingual, and buccal
Which characteristic applies to ALL types of premolars?
All have the buccal crest of curvature more cervical than the lingual crest of curvature.
Which premolars are most likely to have three cusps and a lingual groove?
Mandibular second
When compared to other premolars, which of the following characteristics is unique to a mandibular first premolar?
When compared to other premolars, which of the following characteristics is unique to a mandibular first premolar?
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
When viewed from the facial, what is the geometric shape of a premolar?
Pentagon shaped
Which secondary (adult) tooth has the mesial cusp ridge of its buccal cusp longer than the distal cusp ridge?
Maxillary first premolar
