How many teeth are present and one quadrant up a complete adult permanent dentition?
8
What class of teeth is present in the permanent dentition that is not present in the primary dentition?
Premolars
And permanent intuition the fifth tooth from the midline is
Premolars
The posterior teeth in the permanent dentition include what?
Premolars and molars only
Which permanent tooth routes in the space previously held by the primary second Molar?
The second premolar
How many teeth are present in one arch of the dentition
16
How many teeth are present in one arch at the primary dentition
10
How many incisors are present in a complete adult dentition
8
How many molars your present in the primary dentition
8
What is the top arch of the mouth called
Maxillary
Using the international numbering system or FDI what are the quadrants used when referring to primary dentition?
5,6
8,7
When referring to primary dentition where does lettering start
In the back of the mouth
Teeth A correlates with tooth 1
If you read an article in the British dental journal that refers to tooth number 55.
What universal letter would they be talking about?
A
If an orthodontist wrote about the tooth L5, what would the universal number be
13
What are the universal numbers of the permanent mandibular first molars
19 and 30
What Part of the tooth does Cementum cover
Anatomic root
What tissues of the tooth are usually not visible
Dentin and pulp
What is the hardest substance in the body
Enamel
Cementum
Is the door yellow external layer of the anatomic route the cementum is very thin especially next to the part of the route where the crown joins with the root
What is the junction between the enamel covering the anatomic crown and the junction covering the anatomic root called
Cementtoenamel junction
Cervical line
Dentinoenamel junction
The inner surface of the enamel where the name of joins dentin
Cementodentinal junction
Is the inner surface of cementum where cementum joints Dentin
Where do nerves and blood vessels enter the pulp canals
At the apical foremen
What is the only visible tooth junction on a hand held intact tooth
Cementoenamel
Which mineralize tissues the hardest
Enamel
What is the supporting tissues of teeth called
Periodontium
What is the only part of the periodontium that is visible called
Gingiva
What make up the Periodontium
Alveolar bone
the gingiva
the periodontal ligament
the outer cementum layer of the tooth roots
Gingival sulcus
The space between the tooth and the free gingiva
What is the portion of the tooth not covered with gingiva called
Clinical crown
The portion of the tooth that is not visible since it is covered with gingiva is called what
Clinical root
What is the portion of the tooth called that is covered with enamel and what is the portion of the tooth called that is not covered with enamel
Anatomic crown and anatomic root
Facial surface
Teeth towards the face cheeks or lips
Buccal
Towards the cheek
Labial
Towards the lips
Incisors and canines
Maxillary arch can also be called what
Palatal surface
What is the chewing surface a posterior teeth called
Occlusal
Proximal surfaces
Are the sides of the tooth next to an adjacent tooth
Mesial surface
The Side of the tooth that is closer to the midline
Distal surface
The side of the tooth further away from the midline
The junction line where two tooth surfaces meet is called
Line angle
Root to crown ratio
Root/crown
If you were observing the faciolingual dimension of the two what surface could you be viewing
Mesial
Which of the following phrases are correct? A. Buccal surface of tooth 10 Labial surface of t 19 Palatial surface of t 29 Occusal surface of t 27 Facial surface of t 1
Facial surface of t 1
Which term does not refer to a tooth crown line angle
Mesio occlusal Mesio facial Mesio distal Distolingual Lingua occlusal
Cusps
The Pyramidal elevation with a Peak called a cusp top
Where are cusps located
On premolars and molars occlusal surface and on canines Incisal service
How many cusps do molars have
3-4
Cusps ridge
Four ridges that come together to make the cusp tip
When naming cusps what order do you name them
Mesio and distal first
Then if they are lingual or buccal
Cusp slopes or cusp arms
The mesial and distal cusp ridge
Where are triangular cusps located
On the major cusps of posterior teeth
Ridge that crosses the occlusal surface of posterior teeth in buccal lingual direction
Transverse ridge
Where is the oblique ridge found
Only on the maxillary molars
what do incisors do
Cut food
Articulate speech
Support lips (esthetics)
Guide mandible during movement
the longest incisor crown
Maxillary central incisor crown
General Similarities of Most Incisors
Relatively straight incisal edge;
Rectangular shape: longer incisocervically than mesiodistally
Taper narrower from contact to cementoenamel junction (CEJ)
CEJ curves toward apex
Characteristics of Incisors from the Proximal Views
Bulge greatest in cervical third facially and lingually (cingulum)
Which tooth junctions are not normally visable on a tooth
All dentin junctions
What tissues form the outer boundary of almost all of a pulp chamber
dentin
Functions of pulp
Pain
Nutrition to dentin
Produce new dentin
Parts of periodontium
Alveolar bone
Periodontal ligament
Gingival Margin
Attached gingiva
How to determine root to crown ratio
divide root by crown length
Height of contour facial anterior/posterior
cervical third
Height of contour lingual anterior/posterior
Anterior-cervical
posterior-middle
which of the following bumps or ridges is NOT likely to be found on a maxillary premolar?
a. oblique ridge
b. cingulum
c. mesial marginal ridge
d. transverse ridge
e. triangular ridge
a. oblique ridge
b. cingulum
Which of the following is NOT a cusp found on 3 cusped premolar A. mesiobuccal B. distalbuccal C. Buccal D. Mesiolingual E. Distolingual
A. mesiobuccal
B. distalbuccal
Anatomic landmarks order
cervix
trunk
furcation
apex
Which space contains the part of the gingiva known as the interdental papilla
Cervical embrasure
Interproximal space
Ideal class 1 occlusion involves an important 1st permanent molar relationship where the mesiobuccal cusp of the maxillary 1st molar is located within the
mesiobuccal groove of the mandibular first molar
How many developmental lobes do all anterior teeth have all two-cusped premolars have all three-cusped premolars have all three-cusped molars all four-cusped molars all five-cusped molars
anterior 4 premolar 4 premolar 5 molar 3 molar 4 molar 5
what separates the portions of the tooth formed by different lobes
developmental grooves
tooth 8
Universal tooth number
International system
Palmers
Tooth 8
Maxillary central incisor
11
_1_I
Smallest teeth in the mouth
mand central incisors
Functions of incisors
tear
Incisors that look more alike
mandibular
Contact point more incisially on ______ incisors
mandibular
Incisor crowns wider faciolingually
mandibular
Incisors have prominent lingual anatomy
Maxillary
Incisor roots longer
Mandibular
Incisor ridges are more lingually
mandibular
Incisal edge wears labially on ______ incisors
mandibular
Maxillary incisors contact point
more cervical
More rounded mesial and distal incisial edge
maxillary incisors
_____ incisor has more pronounced lingual anatomy
maxillary
Incisor crowns wider mesiodistaly
maxillary
Maxillary Incisor Cingulum positioned distally Larger shallow lingual fossa Less frequent lingual pit More concave crown Root outline more convex on lingual Very symmetrical crown facially Less obvious distal/mesial bulge on crown Contacts same level mesially and distally Smaller
central maxillary incisor
Maxillary Incisor Cingulum centered Deep but small fossa More common lingual pit Straighter crown Even root taper Less symmetrical crown facially Obvious distal/mesial bulge on crown Contact mesially is more incisal Contact distally more cervical Larger Distal incisal line angle more rounded
lateral maxillary incisor
From an incisal view __ ___ __ has a round, oval shape and _ __ ___ has a triangular shape
maxillary lateral incisor
maxillary central incisor
Contact points Incisors
Max-
Central- I I/M
Lateral- I M
Mand-
Central/lateral- I
Incisor without distolingual twist
Maxillary central Incisor
Mandibular Lateral incisor
Incisors with distolingual twists
All (except central maxillary)
Do maxillary incisors have root depressions?
Mesial- not likely Distal- no
Do mandibular incisors have root depressions?
Yes- Distal is deeper
Out of all of the incisors, which have a centered cingulum and which don’t?
Central centered cingulum
Lateral distal cingulum
Mesiodistal dimension of the crown is larger than labiallingual dimension
Maxillary incisors
Incisal ridge has a distolingual twist
Maxillary central
Mandibular central
The root is very narrow mesiodistally with mesial and distal depressions
Mandibular incisors
The incisal edge is positioned more lingual
Mandibular incisor
The distal proximal crest of curvature is more cervical than the mesial height of contour
Maxillary incisors
Mandibular lateral
This tooth has the widest (mesiodistally) incisor crown
maxillary central incisor
This tooth has the shortest root relative to its crown
maxillary central incisor
This tooth has the largest curvature of the mesial cervical line
Maxillary central incisor
