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Which teeth are Largest and most posterior teeth that are Non-succedaneous , also their
Eruption pattern is 1st and last permanent teeth to erupt ?
Permanent Molars
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What are the “6-year” molars ?
What are the “12-year” molars ?
What are wisdom “wisdom teeth”
First Molars
Second Molars
Third Molars
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What are posterior teeth for ?
What teeth are consider the "Cornerstones of Occlusion"
What teeth control the maintenance of the "vertical dimension of the occlusion"
Grinding
1st Molars
1st Molars
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Which way is larger on the Maxillary Molar ?
How many cusps does it usually consist of ?
FL > MD
4-5 cusps
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Is the O-C dimension the smallest or largest of all Maxillary teeth of the Maxillary Molars
Place the Maxillary molars in order from largest to smallest ?
Place the dimesion (FL , OC, MD ) of the Maxillary Molars in order from Largest to smallest ?
Smallest
1st, 2nd, 3rd molars
FL > MD> OC
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Place the cusp sizes (ML , DL , MB, DB ) in order from largest to smallest ? (Visualize it on the occlusal surface)
ML > MD > DB > DL
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Which mandibular premolar may be confused with a mandibular canine ?
First
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Which cusp is the shortest among the mandibular premolars ?
First Lingual
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Which marginal ridge of the mandibular 1st premolar has the most inclination ? How do the marginal ridge inclinations of the mandibular 1st and 2nd compare with each other ?
1st mesial marginal ridge - 45o
The 2nd are shorter and not as defined
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What unique anatomical feature is typically found on the mesioligual crown surface of the mandibular 1st ?
Mesiolingual groove
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From a proximal view of the manidbular 1st premolar , where is the facial cusp tip located , relative to the mid-root long axis ? How does this compare with that of the mandibular 2nd premolar ?
1st is centered
2nd is facial to the root tip
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From a proximal view of a mandibular premolar , where is the lingual cusp tip located relative to the lingual root line ?
Centered with lingual root surface
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Where is the lingual height of contour found o the mandibular 2nd premolar ? How does this compare with the mandibular 1st premolar ?
2nd is middle occlusal third
1st is Middle third
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Which mandibular premolar could exhibit several different occlusal forms ? What are the forms ?
Mandibular 2nd premolar
Y , U , and H
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Which premolar might develop from five lobes ?
2nd premolar
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Which lingual cusp of a mandibular 2nd premolar is the larger in a 3 cusp-variety ?
MesioLingual
B > ML > MB
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Which premolar might be said NOT to have a transverse ridge ?
2nd premolar - 3 cusp variety , Y-type
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From a facial view , which mandibular premolar has a sharper cusp ?
1st
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On a mandibular 1st premolar , how does the mesial height of contour compare with the distal ? what is unique about this ? Which other tooth might exhibit this same characteristic ?
They are about the same , Mesial and distal at Middle third - distal is more occlusal
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From an occlusal view , which premolar has the least taper lingually ? Be specific
2 cusp variety
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The mesiolingual groove is found only in which premolar ?
1st premolar
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A lingual groove may be found in which premolar ?
2nd premolar -3 cusp variety - Y-Type
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From a facial view of a maxillary 1st premolar , which cusp slope is longer , mesial or distal ?Compare this with the second ?
1st is mesial
2nd is distal
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From a facial view of a maxillary 1st premolar , where is the cusp tip located relative to the mid-root long axis ? Compare this with a maxillary 2nd premolar ?
1st - Distal
2nd - Mesial
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How many root forms does the maxillary 1st premolar normally present ? Which is most often seen ?
3 root forms - single root , bifurcated , and semi-bifurcated
Type 1 , Type 2, Type 3 respectively
Bifurcated is the most common
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Which proximal surface of a maxillary 1st premolar exhibits more concavity ?
Mesial
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Looking at the occlusal table of a maxillary 1st premolar , compare the angles at the mesiofacial and distofacial corners -which is more acute ?
Distobuccal
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Which marginal ridge is longer on the maxillary 1st premolar ?
Distal
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From a facial view of a maxillay 1st.premolar, where is the cusp tip located to Mid-root long axis?Compare this with a maxillary 2nd premolar.
1st =Distal 2nd= Mesial
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How many root forms does the maxillary 1st premolar normally present? Which form is most often seen?
There are 3 root forms - Type 2 =bifurcated is most common
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Which proximal surface of a maxillary 1st premolar exhibits more concavity?
Mesial
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Looking at the occlusal table of a maxillary 1st premolar, compare the anglesat the mesiofacial and distofacial corners - Which is more acute?
Distofacial
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Which marginal ridge is longer on a maxillary 1st premolar?
Distal
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From an occlusal view of the maxillary premolars, where are the proximal contacts located, relative to the central groove?
They are both more facial , with the distal being the most facial
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Which maxillary premolar has the deeper central groove?
1st premolar
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From a proximal view, where is the occlusal table of maxillary premolars located, relative to the root trunk?
They are centralized
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Which is the larger dimension of maxillary premolars: faciolingual or occlusocervical?
Faciolingual
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Of the four cusps of maxillary 1st and 2nd premolars, which is the shortest?
Maxillary 1st Lingual
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A developmental groove crosses over the mesial marginal ridge most frequently in which maxillary premolar?
Maxillary 1st
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Where is the lingual height of contour found in both maxillary 1st and 2nd premolars?
Middle third
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What distinguishing feature found on the mesial surface differentiates between a maxillary 1st and 2nd premolar?
Mesial concavity and mesial grove
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From an occlusal view, which of the premolars is the most symmetrical?
2nd premolar
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How do the lengths of the central grooves compare between the maxillary 1st and 2nd premolars?
1st is wider and 2nd is shorter
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Which root surface of a maxillary 2nd premolar has a more pronounced depression?
Distal
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From a lingual view, the lingual cusp of a maxillary premolar tends to lean towards which proximal surface?
Mesial
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How would you distinguish between a maxillary 1st and 2nd premolar?
Bifurcation , central groove , concavity
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How would you distinguish between a right and left maxillary premolar?
FL taper , concavity , roots
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What are the anatomical structures that make up the borders of an premolar occlusal table ?
Cusp ridges and Marginal ridges
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What are the anatomical features found within an occlusal table?
Grooves, pits, and fossae
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How many developmental lobes are normally found in premolars?
4
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How many developmental lobes make up the facial cusps of premolars?
3
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What is a transverse ridge?
Two triangular ridges meet
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From an occlusal view, which premolar (maxillary or mandibular) would show more of the
- facial surface?
- Mandibular
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Compare the relative mesiodistal and facio lingual dimensions of a maxillary premolar?
Wider F-L than M-D
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Compare the relative mesiodistal and faciolingual dimesions of a mandibular premolar?
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Which primary teeth do the premolars succeed? (Premolars are the only succedaneous
- teeth that have a name different that of the primary teeth they replace)
- Primary Molars
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