Pcc First Half

Front 1

Black triangle

Back 1

open gingival embrasure

Front 2

Diastema

Back 2

space or gap b/w the teeth.

Front 3

All anterior teeth develop from ___ lobes

Back 3

4 lobes- 3 facial and 1 lingual

Front 4

When do the maxillary centrals and laterals erupt?

Back 4

Centrals: 7-8 years

Laterals: 8-9 years

Front 5

Lobes of anterior teeth are separated by ___

Back 5

developmental depressions

Front 6

The lingual lobe of an anterior tooth is also known as the

Back 6

cingulum

Front 7

How many cingula are there in the permanent dentition?

Back 7

12

Front 8

Describe the cingula of the maxillary central incisor and maxillary lateral incisor

Back 8

max central incisor- off center to distal

max lateral incisor- centered

Front 9

Describe the mesial incisal and distal incisial angles of teeth 8/9.

Back 9

These are the maxillary central incisors. THE MI is sharp, right. The DI is slightly round.

Front 10

Describe the MI and DI angles of teeth 7/10.

Back 10

MI- slightly rounded

DI- distinctly rounded

Front 11

Describe the mesial and distal outlines of teeth 8-10.

Back 11

8/9- mesial is straight, distal is curved

7/10- mesial is curved, distal is even more curved

Front 12

Describe the mesial and distal contacts of 8/9.

Back 12

Mesial- incisal third

Distal- incisal third near junction of middle third

Front 13

Describe the mesial and distal contacts of 7/10

Back 13

Mesial- junction of incisal and middle third

Distal- middle third

Front 14

T/F. The contact points of all anterior teeth are centered facio-lingually.

Back 14

True

Front 15

What are the shapes of the central and lateral incisors looking from the facial?

Back 15

Trapezoid

Front 16

What are the shapes of the central and lateral incisors looking from the mesial, distal, or incisal?

Back 16

Triangle

Front 17

Describe the crown lengths of the lateral and central incisors

Back 17

Crown lengths of lateral incisors should be about 1-2 mm shorter.

Front 18

For all anterior teeth where are the facial and lingual heights of contour?

Back 18

Cervical third

Front 19

This tooth has the widest MD dimension of all anterior teeth.

Back 19

Maxillary central

Front 20

What is special about the maxillary incisors and mandibular molars?

Back 20

Only teeth to be wider MD than FL.

Front 21

This tooth has the smallest MD dimension of any maxillary tooth.

Back 21

lateral incisor

Front 22

This tooth has greater variation than any other tooth in the mouth and can be peg shaped.

Back 22

Lateral incisor

Front 23

Which tooth has a linguogingival groove and possibly a pit?

Back 23

Maxillary lateral incisor

Front 24

This tooth is the most often permanent anterior tooth to be congenitally missing

Back 24

Maxillary lateral

Front 25

Maxillary centrals and laterals have one root w/ one canal. How can you tell them apart?

Back 25

Central- conical w/ blunt apex

Lateral- conical w/ apical curvature toward distal

Front 26

What are the numbers of the permanent mandibular centrals and laterals?

Back 26

23, 24, 25, 26

Front 27

When do the mandibular centrals and laterals erupt?

Back 27

Centrals- 6-7 years, laterals- 7-8 years

Front 28

Rank in order of when they come in: maxillary/mandibular centrals/laterals

Back 28

Mandibular centrals 6-7 years

Mandibular laterals/maxillary centrals 7-8 years

Maxillary laterals 8-9 years

Front 29

The first succedaneous tooth to erupt is the

Back 29

mandibular central incisor

Front 30

Describe the cingulum of mandibular central and lateral incisors

Back 30

Mandibular central- centered

Mandibular lateral incisor- off center to distal

Front 31

Describe the incisal angles of the mandibular centrals and laterals.

Back 31

24/25- MI: sharp, right; DI: sharp, right

23/26- MI: sharp; DI: more round than MI

Front 32

Describe the mesial and distal outlines and incisal edge of the mandibular incisors

Back 32

All straight (inciscal edge of 23/26 has a DL twist)

Front 33

Describe the proximal contacts of the mandibular incisors

Back 33

All incisal third

Front 34

T/F. On tooth 23/26, the distal contact is slightly more apical.

Back 34

True

Front 35

T/F. The views of the mandibular incisors are the same as those of the maxillary.

Back 35

True. Except some say the view from incisal is 4-sided/diamond instead of triangle

Front 36

This is the smallest and least variable tooth in the mouth.

Back 36

Mandibular central incisor

Front 37

Distinguishing b/w mandibular incisors:

1) Larger overall

2) Not as symmetrical

3) MMR slightly longer than DMR

4) Root slightly longer

Back 37

1) lateral

2) lateral

3) lateral

4) lateral

Front 38

The lateral incisor crown tips slightly to ___ relative root.

Back 38

Distal

Front 39

T/F. Mandibular incisors have distinct cingula.

Back 39

False. Very smooth- no distinct grooves or pits

Front 40

Maxillary central occludes with

Maxillary lateral occludes with

Back 40

the mandibular central and lateral

the mandibular lateral and canine

Front 41

Mandibular lateral occludes with

Back 41

the maxillary central and lateral

Front 42

Only tooth to occlude with one other tooth

Back 42

Mandibular central occluding w/ maxillary central

Front 43

Central and lateral mandibular roots- which has an apex that can curve to the distal?

Back 43

Central

Front 44

T/F. Both mandibular central and lateral incisors can have proximal root concavities/depressions usually more pronounced on distal. Also both are narrower MD and wider FL.

Back 44

True.

Front 45

What are the numbers of the permanent canines?

Back 45

6, 11, 22, 27

Front 46

Is the labial ridge of canines more pronounced on maxillary or mandibular? Shallow ___ lie mesial and distal.

Back 46

Maxillary; developmental depressions

Front 47

A ___ is any linear elevation on the surface of a tooth.

Back 47

Ridge

Front 48

Describe what canines look like from lingual view.

Back 48

Two fossas on each side of lingual ridge, a cingulum, and two marginal ridges (all features are more pronounced on maxillary)

Front 49

When do canines erupt?

Back 49

Mandibular - 9-10 years (b4 mandibular premol)

Maxillary - 11-12 years (after max premolars)

Front 50

This tooth has the largest cingulum of all anterior teeth.

Back 50

Maxillary canine

Front 51

How can you tell the difference between the maxillary and mandibular canine cingulum?

Back 51

Maxillary- centered

Mandibular- possibly off center to distal

Front 52

T/F. For the canines, the MD dimension is greater than the FL dimension.

Back 52

False

Front 53

What is the smallest dimension of the canines?

Back 53

MD

Front 54

Which is longer on canines: mesial or distal cusp ridge?

Back 54

Distal cusp ridge

Front 55

Describe the mesial outlines of canines.

Back 55

Maxillary (6,11) - straighter than distal

Mandibular (22, 27) - straighter than maxillary. Crown and root form a straight line

Front 56

Describe the distal outlines of canines

Back 56

Maxillary (6,11) - distal bulge with lots of crown extending beyond root

Mandibular (22, 27) - some distal bulge

Front 57

What is the difference between the cusp tip location of maxillary and mandibular canines?

Back 57

Maxillary- facial to or in root axis line

Mandibular- lingual to or in root axis line

Front 58

Describe the proximal contacts of the canines.

Back 58

Maxillary- Mesial: Junction of incisal and middle third

Mandibular- Mesial: incisal third

Distal for both: middle third

Front 59

What shapes are the canines looking at them from the incisal?

Back 59

Diamond

From facial- trap/pentagon

From mesial- triangle

Front 60

What are the least often extracted teeth?

Back 60

Canines

Front 61

This tooth has the longest root of all teeth and is the longest overall tooth.

Back 61

Maxillary canine

Front 62

Canine eminence

Back 62

Formed from the bulge of root of maxillary canine.

Front 63

T/F. The maxillary canine has the longest crown of any tooth.

Back 63

FALSE. The mandibular canine has the longest crown.

Front 64

Which is more resistant to decay: mandibular or maxillary canine?

Back 64

Mandibular because it is smoother

Front 65

When viewed from facial, the ___ canine has a straighter mesial outline and is narrower MD than other canine.

Back 65

mandibular

Front 66

Describe the roots of the canines.

Back 66

Both maxillary and mandibular have one root. maxillary def has one canal and apical 1/3 is curved distal.

Mandibular - one root might bifurcate into labial and lingual parts near apical 1/3

Front 67

The mandibular canine occludes with

The maxillary canine occludes with

Back 67

the maxillary lateral and maxillary canine

the mandibular canine and mandibular first pre molar

Front 68

Describe an ideal Class I canine occlusion.

Back 68

Cusp tip of maxillary canine falls in facial embrasure between mandibular canine and 1st premolar (70% population)

Front 69

What is the difference between overbite and overjet? What is normal?

Back 69

Overbite- vertical distance

Overjet- horizontal distance

Normal overbite is when maxillary incisal edge fall within 1/3 of mandibular incisors. Normal overjet is 1-2 mm.

Front 70

What is canine guidance?

Back 70

Occlusal relationship in which canines produce disclusion of all posterior teeth when mandible moves side to side.

Front 71

What are the numbers of the permanent maxillary premolars?

Back 71

4, 5, 12, 13

Front 72

A ___ is a ridge that projects from cusp tip to a central groove and is only found on posterior teeth.

Back 72

triangular ridge

Front 73

A ___ ridge is formed by the union of two triangular ridges.

Back 73

transverse

Front 74

T/F. Marginal ridges are found only on posterior teeth.

Back 74

False

Front 75

Where are triangular fossae?

Back 75

Mesial or distal to marginal ridges on posterior teeth.

Front 76

A ___ is a shallow groove or line b/w the primary parts of a crown, whereas a ___ does not mark the junction of primary parts.

Back 76

Developmental groove; supplemental groove

Front 77

A buccal ridge is found on what type of teeth?

Back 77

Pre molars. More pronounced on first

Front 78

When do the maxillary premolars erupt?

Back 78

First: 10-11 years

Second: 10-12 years

Front 79

Pre molars develop from ___ lobes.

Pre molars contain ___ cingulum.

Back 79

4; 3 buccal one lingual

0

Front 80

On the maxillary premolars, which is more apical (cervical): DDR or MMR?

Back 80

DDR

Front 81

T/F. The buccal and lingual cusps of the maxillary premolars are within the confines of the root and the occlusal table is centered over the root.

Back 81

True

Front 82

What are the proximal contacts of the maxillary premolars?

Back 82

Mesial - middle third (near junction)

Distal - middle third

Front 83

What do maxillary premolars look like from:

a) facial/lingual

b) mesial/distal

c) occlusal

Back 83

a) trapezoid

b) trapezoid

c) first- hexagonal

second- oval

Front 84

How can you tell the maxillary premolars apart from the occlusal?

Back 84

First is hexagonal, second is oval

Front 85

This posterior tooth has the longest posterior crown occluso-cervically

Back 85

Maxillary 1st premolar

Front 86

Which tooth is the only posterior tooth where the mesial buccal cusp ridge is longer than the distal buccal cusp ridge?

Back 86

Maxillary 1st premolar

Front 87

What is the key feature for distinguishing tooth 5 from 12?

Back 87

5 and 12 are the maxillary first premolars. It is the mesial marginal groove, which crosses the mesial marginal ridge and extends onto the occlusal surface.

Front 88

T/F. About maxillary first premolar.

1. Has a long central groove.

2. Lingual cusp is shorter than buccal cusp.

Back 88

1. True

2. True.

Front 89

on the first and second maxillary premolars, when viewed from the lingual the lingual cusp is ____ inclined.

Back 89

mesially

Front 90

Are maxillary premolars wider BL or MD?

Are they wider OC or MD?

Back 90

BL

OC

MD is the smallest dimension.

Front 91

Choose 1st or 2nd maxillary premolar:

1) Smaller crown

2) More ovoid

3) Buccal and lingal cusps not equal

4) Shorter central groove and wider marg ridges

5) Multiple supplemental grooves

6) Mesial developmental depression

Back 91

1) 2nd

2) 2nd

3) 1st

4) 2nd

5) 2nd

6) 1st

Front 92

Which tooth difficult to adapt to with a matrix band and why?

Back 92

Maxillary 1st premolar. Has a pronounced mesial concavity called mesial developmental depression.

Front 93

This is the most often extracted tooth for orthodontic reasons

Back 93

Maxillary first premolar

Front 94

How do the roots between the maxillary first and second premolar differ?

Back 94

First- 2 roots (one buccal, one lingual). It is also the only premolar w/ 2 roots

Second- one root, can have two canals

Front 95

Maxillary premolars have depressions on their roots. Which is more prominent on which?

Back 95

1st PM: mesial

2nd PM: distal

Front 96

Torus

Back 96

Bony outgrowth or exostosis

Front 97

Periodontium

Back 97

Supporting structures of a tooth- both hard and soft