Exam 1 Review PART 1 Flashcards Preview

Dental Anatomy > Exam 1 Review PART 1 > Flashcards

Flashcards in Exam 1 Review PART 1 Deck (29):
1

SLIDE 1: PERMANENT DENTITION (32)

Q: What is present in an individual quadrant?

Prof's question: What is not present in an individual quadrant?

In each quadrant:
1 CENTRAL INCISOR
1 LATERAL INCISOR
1 CANINE
2 PREMOLAR: 1st premolar (aka 1st bicuspid), 2nd premolar (aka 2nd bicuspid)
3 MOLAR: First molar, second molar, third molar

Prof's answer: 3rd premolar (NO!!!!)

2

SLIDE 2: THE CROWN AND ROOT

* Define anatomic crown and clinical crown

ANATOMIC CROWN: the portion of the tooth covered by enamel
(seen in patient. substantially smaller or shorter, and lesser in surface area)
-always the same.

CLINICAL CROWN: the portion of the tooth that is clinically visible.
(seen in older patient)
-visible above the gum line; varies with age.

3

SLIDE 2: THE CROWN AND ROOT

Q: Which crown is defined as that portion of the tooth that is clinically visible.

CLINICAL CROWN

4

SLIDE 3: TRIANGULAR RIDGES

Q: 1) Triangular ridges are only found in which teeth?
2) Where do these ridges descend from?
3) They travel toward which part of the occlusal surface?

1) ONLY found in posterior teeth
2) Descend from the TIPS OF THE CUSPS
3) Travel toward the CENTRAL part of the occlusal surface.

5

SLIDE 4: TRIANGULAR vs. FACIAL/LINGUAL RIDGES

Q: What's another name for triangular ridges

NONE! Triangular ridges have no other name

6

SLIDE 4: TRIANGULAR vs. FACIAL/LINGUAL RIDGES

Q: (T/F). The triangular ridges on the facial cusps are NOT called lingual ridges. Additionally, the triangular ridges of the lingual cusps are NOT called facial ridges.

TRUE! Triangular ridges are only called triangular ridges.

7

SLIDE 5: OBLIQUE RIDGE: SPECIAL CASE

Q: Which ridge is classified also as a "SPECIAL KIND" of transverse ridge.
*WHY?

OBLIQUE RIDGE

- because there is a UNION of the triangular ridge of the:
1) TRIANGULAR RIDGE of the DISTOFACIAL CUSP
2) DISTAL CUSP RIDGE of the MESIOLINGUAL CUSP
(across the facial-lingual perimeter of the occlusal surface)

8

SLIDE 5: OBLIQUE RIDGE: SPECIAL CASE

* Why is the oblique ridge not considered a "pure" transverse ridge?

because both ridges are NOT triangular ridges.

9

SLIDE 6: MARGINAL RIDGES ON ANTERIOR TEETH

Q: Define marginal ridges:
These are rounded borders of the enamel that form what two; ______ and ________ (Distal, Lingual, Mesial, Facial) margins or borders of the ________ (which surface: distal, lingual, facial, mesial) surface of __________ (anterior or premolar) teeth.

MESIAL AND DISTAL MARGINS
LINGUAL SURFACE
ANTERIOR TEETH: INCISORS AND CANINES

10

SLIDE 7: "ANSWER"

Q: On the LINGUAL surfaces of POSTERIOR teeth, the raised or convex contours are NOT called ridges. What is their official name?

SLIDE 7: LINGUAL HEIGHTS OF CONTOUR

LINGUAL HEIGHTS of CONTOUR

(These contours on the lingual surface are NOT in the cervical part of the crown. OCCLUSAL SURFACE!

11

SLIDE 8: DEVELOPMENTAL PIT
("Select any or all that are correct")

Q: Name all development pits that are found on a permanent tooth (ex: mandibular molar)

1) Facial Pit : distalfacial pit and mesialfacial pit
2) Distal triangular pit
3) Mesial triangular pit
4) Central pit
5) Lingual pit

F, LC, MD

12

SLIDE 9: LINE ANGLE ON ANTERIOR TEETH

Q: Name the line angle that is at the junction of the mesial surface and incisal ridge on a permanent central incisor.

MESIOINCISAL LINE ANGLE
(name the proximal surface first, then the adjoining surface).

13

SLIDE 10: FIRST EVIDENCE OF CALCIFICATION SCHEDULE OF PRIMARY TEETH

Q: Which primary tooth is last to begin calcification and at what week in utero?

MAXILLARY primary 2nd molar (A,J) at 19 weeks in utero.

14

SLIDE 11: AT BIRTH

Q: At birth, which two CROWNS have completely formed?
Which PERMANENT teeth have begun CALCIFICATION?

the PRIMARY MANDIBULAR FIRST MOLAR CROWNS and the PRIMARY MANDIBULAR CENTRAL INCISOR CROWNS.
(no maxillary yet)

calcification: the maxillary and the mandibular PERMANENT FIRST MOLARS.

15

SLIDE 12: ERUPTION AND EMERGENCE of PERMANENT TEETH

Q: Which permanent teeth is first to erupt and at what year?

Permanent 1st molar at 6 years of age.

16

SLIDE 12: ERUPTION AND EMERGENCE of PERMANENT TEETH

Q: Which permanent teeth is last to erupt and at what year?

Permanent 3rd molar at 19 years of age.

17

SLIDE 13: PRIMARY DENTITION ERUPTION FACTS
(" WHICH ONE IS INCORRECT" question. ONE ANSWER)

Q: Initial Mineralization of the Primary dentition is when?

ENTIRELY PRENATAL ( on the exam, will most likely change this answer to postnatal.... remember that it's PREnatal)

18

SLIDE 13: PRIMARY DENTITION ERUPTION FACTS
(know all these facts)

* 1) When does calcification begin in utero? (weeks)
2) All primary teeth have initiated calcification when (in utero)? (weeks)
3) __________ (arch) teeth usually erupt before namesakes in the opposing _______ (arch)
4) Which primary tooth is last to emerge and around which months of age?
5) When is root formation complete for all primary teeth (age)?
6) Primary tooth occlusion is evident at what age?
7) Primate space (space btwn anterior and posterior) begins to form at what age?

1) 13-16 weeks
2) 18-20 weeks
3) Mandibular, Maxilla
4) Primary maxillary 2nd molar and at 29 months of age.
5) 39 months ( 3 and 1/2 years)
6) 3
7) 4

19

SLIDE 14: TRITUBERCULAR MOLAR CUSP THEORY
(know which particular cusps are all present in the maxillary or mandbile)

Q: The primitive name for all mandibular cusps (ex: haplo... tricono... tritubercular...) that's present in all stages is?

Q: The primitive name for all maxillary cusps that's present in all stages is?

A: protoCONID. = mandibular ***
B: protoCONE = maxillary

20

SLIDE 15: MAXILLARY TEETH INDIVIDUAL ALIGNMENT (permanent)

Q: From a PROXIMAL standpoint, the longitudinal (vertical) axis of the permanent maxillary teeth that is going to deviate the MOST is which tooth?.. and what angle?
Q: the LEAST?

The MOST: CENTRAL INCISOR: 28 degrees
The LEAST: FIRST PREMOLAR: 5 degrees

21

SLIDE 16: HEIGHT OF CONTOUR - Mandibular Arch

Q: What is the mandibular 2nd premolar teeth lingual surface amount (height #) of contour and location?

0.75 mm
Located: in the MIDDLE THIRD

22

SLIDE 17: CORRELATIONS REGARDING THE HEIGHT OF CURVATURE OF THE CERVICAL LINE: (T/F Type of questions)

Q: List the four correlations regarding to the height of curvature of the cervical line.

There is a correlation between the:
1) HEIGHT OF CURVATURE OF THE CERVICAL LINE (CEJ)
2) SIZE OF THE CERVICAL EMBRASURES
3) SIZE OF THE OCCLUSAL/INCISAL EMBRASURES
4) CERVICO-INCISAL OR CERVICO-OCCLUSAL HEIGHT OF THE CONTACT AREA

( INCISAL EMBRASURE, CERVICAL EMBRASURE, CONTACT AREA, HEIGHT OF CURVATURE OF CEJ)

23

SLIDE 17: CORRELATIONS REGARDING THE HEIGHT OF CURVATURE OF THE CERVICAL LINE:

* Which arch has more height of curvature of the cervical line?

MAXILLARY Teeth > Madibular teeth

24

SLIDE 18: PRIMARY VS. PERMANENT TEETH ROOT COMPARISONS.
("Multiple Answer Question: Which of the following is correct)

Q: 1) What's the primary root length to crown length characteristics compared to permanent teeth?
2) What's the shape like on the APICES of primary teeth? (pointed or broad)
3) What's the root angulation exhibited on the primary anterior teeth?
***4) Which root is more curved, for each respective primary molar tooth (mesial or distal)?

- 1) LONGER root lengths relative to crown heights (length) compared to permanent teeth.
2) POINTED
3) MINIMAL root angulation (straight up and down)


***4) MESIAL ROOTS are more CURVED than distal roots, for each respective primary molar tooth.

25

SLIDE 19: OCCLUSAL VIEW: PRIMARY MANDIBULAR FIRST MOLAR
(Know cusp sizes)

Q) List the four cusp present in the primary mandibular first molar:
-- Which one has the largest cusp size?
-- Which one has the smallest cusp size?

1) MESIOFACIAL, MESIOLINGUAL, DISTOFACIAL, DISTOLINGUAL
(MF, ML, DF, DL)

LARGEST CUSP SIZE: MF
SMALLEST CUSP SIZE: DL



* Side note:the primary mandibular first molar does not resemble any other primary or permanent tooth in the human dentition.

26

SLIDE 20: MESIAL VIEW: PERMANENT MANDIBULAR LATERAL INCISORS

Q: The crest of the ________ (facial or lingual) cervical ridge will be at a higher level incisally than the crest of the __________ (facial or lingual) cervical ridge.

1) FACIAL, LINGUAL

27

SLIDE 20: MESIAL VIEW: PERMANENT MANDIBULAR LATERAL INCISORS

Q: How does the cervical line curve?
-- Where is the location of the crest of this cervical line curvature?

curves INCISALLY to a LOWER level on the DISTAL surface than on the MESIAL surface.

- crest of the curvature is in the MIDDLE of the tooth, FACIOLINGUALLY.

28

SLIDE 20: MESIAL VIEW: PERMANENT MANDIBULAR LATERAL INCISORS

Q: What is a DISTINCTIVE characteristic of this tooth from the mesial view?
Hint: DISTAL MARGINAL RIDGE

The DISTAL MARGINAL RIDGE can be seen beyond the lingual outline of the MESIAL MARGINAL RIDGE.
- This is because the crown of this tooth is slgihtly "TWISTED" on its root and the distal end of the incisal ridge is more inclined to the lingual

29

SLIDE 21: INCISAL VIEW: PERMANENT MAXILLARY CANINE

Q: Which line angle is significantly more developed?? (MESIOFACIAL OR DISTOFACIAL line angle)

Q: The _________ (mesial or distal) portion of the crown appears "stretched" or elongated or pinched. What's the purpose of this?

1) MESIOFACIAL

2) Distal. Purpose: in order to make contact with the MESIAL of the maxillary first premolar.

A