Final Review: Slides 1-20

Question 1

SLIDE 2: INCISAL RIDGE vs. INCISAL EDGE
(One answer question)

Q: Which of the following entities on a permanent anterior crown tends to be the SMALLEST in the overall surface area? (Incisal edge or Incisal ridge)

Answer 1

A: Incisal Edge.

Note: NOT INCISAL RIDGE

Question 2

SLIDE 3: NOTABLE CALCIFICATION SCHEDULE POINTS REGARDING PRIMARY TEETH
(Sequence listing question)

Q: List the first evidence of calcification in primary dentition in sequence from first to last:
(Options: Lateral incisor, 2nd molar, canine, 1st molar, central incisor)

Answer 2

A: 1) Central incisor

 2) 1st molar
 3) lateral incisor
 4) canine
 5) 2nd molar

Question 3

SLIDE 4: ROOT COMPLETION SCHEDULE OF PRIMARY TEETH
(entire root formation multiple answer question)

Q: The first primary tooth root to completely form is which tooth and at what year of age?
Q1) Maxillary
Q 2) Mandibular

Answer 3

Tooth root formation and calcification before any other teeth:
A1: Maxillary: Central incisors ( i1 or E,F) at 1.5 years

A2: Mandibular: Central and lateral incisors (i1,i2 or P,O,Q,N) at 1.5 years

Question 4

SLIDE 5: SIX YEARS OF AGE

Q: All crowns on the permanent incisors, permanent first premolars and permanent first molars have completely calcified by what age?

Answer 4

A: 6

• -Note: Anterior tooth spacing has stopped expanding by age 6.
• Permanent 1st molars erupt at 6 years of age.

Question 5

SLIDE 6: CALCIFICATION CHRONOLOGY PERMANENT TEETH

Q: List the permanent mandibular teeth in initiating calcification from first to last:
(Options: Central incisor, lateral incisor, canine, 1st and 2nd premolar, 1st 2nd and third molars)

Answer 5

A: 1) 1st molar

 2) Central incisor
 3) Lateral incisor
 4) Canine
 5) Premolars
 6) 2nd molars
 7) 3rd molars

Question 6

SLIDE 7: ORDER OF ERUPTION OF MANDIBULAR PERMANENT TEETH

Q: List the correct order of eruption from 1st to last of the permanent mandibular teeth:
(Options: Central incisor, lateral incisor, canine, 1st and 2nd premolar, 1st 2nd and third molars)

Answer 6

A: 1) 1st molar

 2) Central incisor
 3) Lateral incisor
 4) Canine
 5) 1st premolar
 6) 2nd premolar 
 7) 2nd molar
 8) 3rd molar 

—– Note: According to his echo lecture, he said to know maxillary also. “There might be a

Question 7

SLIDE 8: Eight Years of Age
(Single answer question that is a true statement – Where are the 3rd molars)

Q: Which teeth have not initiated calcification at the age of 8?

Answer 7

A: 3rd molars have not initiated calcification at 8 years of age. They start at 9 years of age.

—- all other options on exam will be false

Question 8

SLIDE 9: MAMMALIAN PHYLOGENETIC DEVELOPMENT: Classification of cusp forms

Q: Define Tritubercular Molar

Answer 8

A: Three cusps in a primary triangle

Question 9

SLIDE 10: MANDIBULAR TEETH INDIVIDUAL ALIGNMENT: Measurement of tooth alignment compared to the vertical (longitudinal) axis
(one of the answers will be incorrect)

Q:  What are the facial reference angles for the following teeth:
     Q1: Central incisor: 
     Q2: Lateral incisor:
     Q3: Canine:
     Q4: 1st premolar:
     Q5: 2nd premolar: 
     Q6: 1st molar:
     Q7: 2nd molar:

Answer 9

Facial reference angles of mandibular teeth:    
     A1: Central incisor: 2 degrees
     A2: Lateral incisor: 0 degrees
     A3: Canine: 6 degrees
     A4: 1st premolar: 6 degrees
     A5: 2nd premolar: 9 degrees
     A6: 1st molar: 10 degrees 
     A7: 2nd molar: 14 degrees 

(2,0,6,6,9,10,14)

Question 10

SLIDE 11: PROXIMAL CONTACT AREAS: Facial Perspective of Maxillary Anterior Teeth
(Multiple answer question where one will be labeled incorrectly– anything that says cervical 3rd is incorrect)

Q: What are the location of proximal contacts for the following maxillary anterior teeth: 
      Q1: Midline: 
      Q2: Distal of Central:
      Q3: Mesial of Lateral:
      Q4: Distal to Lateral:
      Q5: Mesial of Canine:
      Q6: Distal of Canine:

Answer 10

A1: Midline: INCISAL THIRD
*A2: Distal of Central: JUNCTION OF INCISAL AND MIDDLE THIRDS
*A3: Mesial of Lateral: JUNCTION OF INCISAL AND MIDDLE THIRDS
A4: Distal to Lateral: MIDDLE THIRD
A5: Mesial of Canine: JUNCTION OF INCISAL AND MIDDLE THIRDS
A6: Distal of Canine: MIDDLE THIRD

*Remember: Anything that says CERVICAL is wrong.

Note: They will all curve from middle 3rd down to the midline.

Question 11

SLIDE 12: LOCATION OF PERIODONTAL FIBERS

Q: Which fibers are known to resist forceful impaction of a tooth into the alveolus, consistent with many types of trauma.

Answer 11

A: Oblique fibers (Prevents root from fracturing)

Question 12

SLIDE 13: EMBRASURES: Facial Viewpoint – Maxillary Posterior Teeth

Q1: The largest embrasure is found between what two teeth? ( lateral incisor and canine or canine and 1st premolar)
Q2: The smallest embrasure is found where (Know both in the anterior and posterior section)? ( between two molars or at the midline)

Answer 12

A1: Largest: canine and 1st premolar
A2: Smallest in the anterior section: At the midline
Smallest in the posterior section: between the 1st and 2nd molar (Occlusal embrasure)

Question 13

SLIDE 14: PRIMARY vs. PERMANENT CROWNS
(Looking for one that’s essentially incorrect)

 Q1) (T/F): Primary teeth has thinner enamel
 Q2) (T/F): Primary teeth has thinner dentin 
 Q3) (T/F): Primary teeth have a whiter crown color
 Q4) (T/F): Primary teeth have taller pulp horns
 Q5) (T/F): Proportionally shorter pulp chambers

Answer 13

Q1) T: Primary teeth has thinner enamel
Q2) T: Primary teeth has thinner dentin
Q3) T: Primary teeth have a whiter crown color
Q4) T: Primary teeth have taller pulp horns
Q5) F: Proportionally shorter pulp chambers. They have porportionately LARGER pulp chambers.

Question 14

SLIDE 15: INCISAL VIEW – PRIMARY MAXILLARY LATERAL INCISOR
(Multiple answer question)

Q: In a primary maxillary lateral incisor, incisal view:
Q1 - The crown tapers SLIGHTLY toward the __________ (lingual or facial surface)
Q2 - The incisal ridge is curved toward the ________ ( lingual or facial surface)
Q3 - The distolingual profile is SLIGHTLY _____________ (concave or convex)
Q4 - The lingual fossa is moderately _________ (deep or shallow)?
Q5 - Has ____________ (cingulum or no cingulum)

Answer 14

A1: Tapers SLIGHTLY toward LINGUAL surface
A2: Curved toward FACIAL surface
A3: DIstolingual profile is SLIGHTLY CONCAVE
A4: Lingual fossa is moderately DEEP
A5: Has CINGULUM

Question 15

SLIDE 16: OCCLUSAL VIEW – PRIMARY MAXILLARY SECOND MOLAR:
(look for the incorrect statement)

Q1: How many cusps are found on this tooth?
Q2: List the cusps from largest to smallest size?

Answer 15

A1: 5 cusps
A2: LARGEST:  MESIOLINGUAL ****
                        MESIOFACIAL
                        DISTOFACIAL
                        DISTOLINGUAL
                        5th (CUSP of CARABELLI)

Question 16

SLIDE 16: OCCLUSAL VIEW – PRIMARY MAXILLARY SECOND MOLAR:

Q1: The crown outline form is considered “somewhat ______________ “ (rhomboidal or trapezoidal) exhibiting a ___________ (mesial or distal) crown convergence.
Q2: (T/F) Both marginal ridges are prominent
Q3: There is a distinct transverse ridge involving the TRIANGULAR RIDGES of the _____________ (mesially or distally-positioned cusps)
Q4: The TRANSVERSE groove of the OBLIQUE ridge crosses the OBLIQUE ridge and connects the _________ (mesial or central pit) with the ________ (distal or mesial pit)

Answer 16

A1: RHOMBOIDAL, DISTAL
A2: TRUE
A3: MESIALLY-POSITIONED CUSPS
A4: CENTRAL PIT, DISTAL PIT

Question 17

SLIDE 17: FACIAL VIEW –PRIMARY MANDIBULAR FIRST MOLAR
(Multiple answer question– pick out which one will be correct)

Q1) The MESIAL surface outline or contour is relatively ____________ (flat or convex)
Q2: The proximal contact areas are in the OCCLUSAL portion of the ____________ (middle or cervical 3rd) (ALMOST to the junction of the middle and occlusal thirds)
Q3: The _______________ (mesiofacial or distofacial cusp is larger and taller than the __________ mesiofacial or distofacial cusp)
Q4: The cervical line significantly POINTS or DIPS _____________ (apically or cervically) onto the _____________ (mesial or distal root) surface on the mesial half of the tooth
Q5: The ___________ (mesial or distal root) is much longer and more straight than the __________ (mesial or distal root)

Answer 17

A1: relatibely FLAT
A2: occlusal portion of the MIDDLE 3rd
A3: MESIOFACIAL, DISTOFACIAL 
A4: APICALLY, MESIAL ROOT SURFACE. 
A5: MESIAL ROOT much longer and straight than DISTAL ROOT.

Question 18

SLIDE 18: TOOTH BUD DEVELOPMENTAL ANOMALIES.
(know definition question T/F-T/F question, one on each of the anomalies)

Q1: ___________ (fusion or concrescence) is a condition when two roots combine into one crown, is the union of two adjacent tooth germs, and always involves dentin
Q2: _______________ (fusion or concrescence) is the superficial union of roots or approximating teeth by way of the deposition of only cementum.

Answer 18

A1: Fusion
A2: Concrescence

• KNOW THESE TWO DEFINITIONS COMPLETELY

Question 19

SLIDE 19: INCISAL ASPECT OUTLINES AND ANATOMY: PERMANENT MEXIALLY CENTRAL INCISOR: (Fill in the blank question)

Q1: The crest of the cingulum (greatest curvature on the lingual) is ____________ (slightly distal or mesial) to the mesiodistal bisecting plane of the crown.
Q2: The FACIAL SURFACE OUTLINE between the MESIOFACIAL and DISTOFACIAL line angles is _____________ (relatively straight or convex)

Answer 19

A1: SLIGHTLY DISTAL
A2: RELATIVELY STRAIGHT

Question 20

SLIDE 20: PERMANENT MAXILLARY CENTRAL AND LATERAL INCISORS – Summary of comparisons and contrasts (differentiation)

Q: What can be used to distinguish between the two incisors:

      1) Can size? 
      2) Angularity? 
      3) Root curvature? 
      4) The crests of cingulum? 
      5) Presence of lingual fossa

Answer 20

CAN use to differentiate

1: size: YES
2: angularity: YES
3: root curvature: YES

CAN not use to differentiate
4: crests of cingulum on both incisors are offset to the distal: NO
5: presence of lingual fossa: NO