Dental Anatomy

Front 1

Where are the proximal contacts located on the max central?

Back 1

Mesial: at the junction of the incisal and middle thirds
Distal: at the middle third

Front 2

Which tooth has its proximal contacts located at the same level on the mesial and distal sides?

Back 2

Mand central

Front 3

For anterior teeth, which direction does the cervical line curve proximally? Which side has the greatest curvature? Which tooth has the greatest curvature?

Back 3

Towards the incisal edge
Mesial
Max. central

Front 4

Between which teeth would you find a mesial surface in contact with the mesial surface of the adjacent teeth?

Back 4

Max and mand centrals

Front 5

T or F

The max central tapers towards the facial.

Back 5

FALSE... lingual

Front 6

What is the shape of the mandibular incisors from the labial view?

Back 6

Trapezoid/rectangular

Front 7

Which tooth has the poorest root to crown ratio of any incisor?

Back 7

Max central

Front 8

Describe the root of the max central.

Back 8

single, conical, straight, rounded apex

Front 9

T or F

The mand central is symmetrical while the mand lateral is not.

Back 9

TRUE.

Front 10

Of the incisors, which tooth has the widest MD incisal edge?

Back 10

Maxillary central

Front 11

T or F

Both the max central and max lateral incisors are longer IC than wide MD.

Back 11

TRUE

Front 12

What shape are the mandibular incisors from the incisal view?

Back 12

Diamond

Front 13

T or F

The max central is rounder than the max lateral.

Back 13

FALSE. The max lateral is a more rounded tooth because is it more convex IC and MD when compared to the max central.

Front 14

Which tooth are you most likely to find a lingual fissure and linguogingical groove?

Back 14

Max lateral

Front 15

What is the shape of the mand incisor roots?

Back 15

RIBBON

Front 16

The surface structures on the lingual aspect are (more or less?) prominent on mandibular incisors when compared the maxillary. (fossa, cingulum, etc)

Back 16

LESS

Front 17

Where is the cingulum of the max lateral located?

Back 17

Centered

Front 18

In which tooth can you see the distal portion from the mesial view?

Back 18

Mand lateral (due to the distolingual twist)

Front 19

The root of the max lateral is deflected towards the ____.

Back 19

Distal (in the apical third)

Front 20

How does the shape of the max central compare to that of the max lateral from the incisal view?

Back 20

Max central: triangular
Max lateral: round

Front 21

The crown of mandibular incisors is offset towards _____.

Back 21

Lingual

Front 22

The cingulum of the max central is offset towards the _____.

Back 22

distal

Front 23

The incisal angles of the MANDIBULAR incisors are sharp. This is true of all angles EXCEPT:

Back 23

The distal side of the mand lateral.

Front 24

Where are the contact areas of the max central located?

Back 24

Mesial: incisal third near the mesioincisal angle
Distal: middle of the incisal third

Front 25

Where are the contact areas of the mand centrals located? And the mand laterals?

Back 25

Incisal third for mesial and distal of both (but slightly more cervical on the distal of the lateral)

Front 26

Compare the dimensions of the max central MD and IC.

Back 26

Longer IC than wide MD (but closer to equal than any permanent incisor)

Front 27

Compare the cross section of the root of the max central near the cervical line vs the midroot

Back 27

Cervical line: rounded triangular outline (narrower at the lingual

Midroot: ovoid (wider labiolingually than mesiodistally)

Front 28

Compare the FL and MD dimensions of the maxillary and mandibular incisors.

Back 28

Maxillary: wider MD than FL
Mandibular: wider FL than MD

(opposites!)

Front 29

T or F

The max lateral has very prominent marginal ridges, fossa, and cingulum when compared to the max central.

Back 29

TRUE

Front 30

The cingulum of the mand lateral is offset towards the _____.

Back 30

Distal

Front 31

T or F

The root of the max lateral is narrower labiolingually than mesiodistally.

Back 31

FALSE. wider

Front 32

In which incisor does the distal portion curve towards the lingual?

Back 32

Mand lateral (distolingual twist)

Front 33

Which tooth may potentially have a peg shape?

Back 33

Max lateral

Front 34

T or F

The roots of mand incisors do not have any concavities.

Back 34

FALSE. Both may have concavities on the mesial and distal surfaces.

Front 35

Of the maxillary teeth, which tooth has the longest IC crown?

Back 35

Max central

Front 36

Which incisor is least likely to have more than one canal?

Back 36

Max central

Front 37

Compare the length and width of the roots of the mandibular lateral and mandibular central incisors.

Back 37

The mand lateral's root is longer and wider than the central.

Front 38

What is the shape of the max central from the incisal, proximal, and labial views

Back 38

Incisal: triangular
Proximal: triangular
Labial: Trapezoid/rectangle

Front 39

The roots of the mand incisors are wider in which dimension?

Back 39

Labiolingually

Front 40

Which tooth is second most likely to have an anomaly?

Back 40

Max lateral

Front 41

What is the shape of the canine from the facial view?

Back 41

Pentagon

Front 42

Compare the size of the facial and lingual embrasures for the maxillary and mandibular incisors.

Back 42

Maxillary: lingual embrasure is larger
Mandibular: facial embrasure is larger

Front 43

Is the height of contour more incisal on the maxillary or mandibular incisors?

Back 43

Mandibular

generally near the incisal angle vs maxillary which are in the incisal third near or at the junction of the middle third

Front 44

Which tooth has the most distinct lingual anatomy?

Back 44

Maxillary lateral

Front 45

Which incisor has the most cervically located height of contour?

Back 45

Max lateral

Front 46

Which anterior tooth has the shortest root?

Back 46

Mand central

Front 47

Which slope of the canine is longer?

Back 47

Distal

Front 48

Which maxillary tooth has the second longest IC crown?

Back 48

Max canine

Front 49

Compare the dimensions of the maxillary and mandibular canines.

Back 49

Maxillary is larger in all dimensions except crown length.

Front 50

Which mandibular tooth has the longest IC crown?

Back 50

Mand canine

Front 51

What terms are commonly used to describe the crowns of maxillary canines? how about mandibular?

Back 51

Maxillary: squatty
Mandibular: long and narrow

Front 52

T or F

The mesial slope of the mandibular canine projects far past the root outline

Back 52

FALSE. The mesial slope does NOT project past the root outline (distinguishes mand from max)

Front 53

Where are the proximal contacts of the maxillary canine located?

Back 53

Mesial: at the junction of the incisal and middle third
Distal: in the middle third

Front 54

Where are the proximal contacts of the mandibular canines located?

Back 54

Mesial: incisal third (just gingival to the mesioincisal angle)
Distal: at the junction of the incisal and middle thirds

Front 55

Which canine has a more pronounced labial ridge?

Back 55

Max canine

Front 56

Compare the roots of the maxillary and mandibular canines. (length, curvature, etc.)

Back 56

Maxillary: long, slender, conical, pointed apex, distal deflection in apical third.

Mandibular: shorter, straighter, blunt apex

Front 57

Compare the location of the cingulum on maxillary and mandibular canines.

Back 57

Maxillary: centered
Mandibular: offset to the distal

Front 58

Which canine has a more developed lingual anatomy?

Back 58

Maxillary (large bulky cingulum, may have a tubercle or pit)

Front 59

Name some components of the lingual anatomy of both canines that are unique when compared to anterior teeth.

Back 59

Lingual ridge with mesial and distal lingua fossa

Front 60

What is the shape of all anterior teeth from the proximal view?

Back 60

Wedge (or triangle)

Front 61

Compare the lingual height of contour on maxillary vs mandibular canines.

Back 61

More cervical on the mandibular

Front 62

Where is the cusp tip of the maxillary canine located relative to the root axis?

Back 62

ON or facial to the root axis.

Front 63

Where is the cusp tip of the mandibular canine located relative to the root axis?

Back 63

Lingual to the root axis

Front 64

T or F

From the incisal view, the crown of the mandibular canine is asymmetrical while the maxillary is not

Back 64

TRUE.

Front 65

Which canine has a bulkier cusp tip?

Back 65

Maxillary (due to its "heavy" lingual ridge)

Front 66

Compare the FL and MD dimensions of the maxillary and mandibular canine.

Back 66

FL dimension is greater than MD. (much more in the mandibular)

Front 67

Compare the mesial and distal halves of the facial outline of the maxillary canine.

Back 67

Mesial: convex
Distal: concave

Front 68

What is the outline of the mandibular canine from the incisal view?

Back 68

Oblong faciolingually

Front 69

Which teeth exhibit a disolingual twist?

Back 69

Mand lateral and mand canine

Front 70

When an individual is smiling, what portion of the canine do you see from the front?

Back 70

Only the mesial half (the distal half is seen from the side)

Front 71

Which canine is more likely to have more than one canal?

Back 71

Mandibular (may two canals with one or two roots)

Front 72

Are there root depressions on the canines?

Back 72

Yes. In the middle third of both the mesial and distal with the distal being more distinct.

Front 73

Which canines have more incisally located contact points?

Back 73

Mandibular

Front 74

Some anterior teeth have root depressions ONLY on the mesial side while others have depressions on BOTH the mesial and distal. Which have depressions on both sides?

Back 74

All teeth have root depressions on the mesial surface in the middle third. Mandibular incisors and both canines have depressions on mesial and distal surfaces.

Front 75

Which anterior teeth have centered cingulums?

Back 75

Maxillary lateral
Maxillary canine
Mandibular central

Front 76

Which anterior teeth have cingulums which are offset towards the distal?

Back 76

Maxillary central
Mandibular lateral
Mandibular canine

Front 77

Which tooth has the longest root in the mandibular arch?

Back 77

Mandibular canine

Front 78

Which set of molars (primary or permanent) have longer more slender roots?

Back 78

Primary

Front 79

Which set of teeth are more mineralized?

Back 79

Permanent

Front 80

T or F

Primary teeth have comparatively less tooth structure but greater dentin thickness.

Back 80

TRUE.

Front 81

Which set of molars has a longer root trunk?

Back 81

Permanent (primary molars have virtually no root trunk)

Front 82

Describe the direction of the enamel rods at the occlusal surface and at the cervical ridge.

Back 82

Parallel at the occlusal surface
Slope occusally at the cervical ridge (cervically in permanent teeth)

Front 83

T or F

Primary teeth contain mamelons and perikymata.

Back 83

FALSE. these are not present in the primary dentition.

Front 84

What direction do the roots of anterior teeth bend in the primary dentition?

Back 84

Lingually, then labially in the apical third

Front 85

What proportion of the cervicoincisal length do the cingula occupy in the primary dentition?

Back 85

1/3

Front 86

In the primary dentition, which molar is larger?

Back 86

2nd molar is larger than the 1st molar.

Front 87

In the primary dentition, which arch erupts first?

Back 87

Mandibular.

Front 88

What is the order of eruption of primary teeth?

Back 88

Central incisors, lateral incisors, 1st molar, Canine, 2nd molar

Front 89

What is the eruption schedule in the primary dentition? (months)

Back 89

6-9-12-16-24 (CI, LI, M1, C, M2)

Front 90

What are primate spaces?

Back 90

Spaces that develop between primary teeth as a result of the maxilla and mandible growing.

Front 91

Between which maxillary teeth would you find primate spaces?

Back 91

Canine and lateral incisor. (mesial to canine)

Front 92

Between which mandibular teeth would you find primate spaces?

Back 92

Canine and 1st molar. (distal to canine)

Front 93

Are the buccal cusps on primary molars sharp/pointed?

Back 93

NO.

Front 94

T or F

The roots of the 2nd primary molar are more narrow than the 1st primary molar.

Back 94

FALSE. The second molar roots are spread more widely than the first. (this is OPPOSITE in the permanent dentition).

Front 95

Which tooth has the mesial contact more cervically located than the distal contact?

Back 95

Mandibular 1st premolar
Primary maxillary canine

Front 96

Which primary molar crown resembles a premolar?

Back 96

Primary max 1st molar

Front 97

Which primary molar is the smallest in all dimensions (except one, which one) ?

Back 97

Primary max 1st molar. smaller in all dimensions EXCEPT labiolingually

Front 98

T or F

Primary maxillary 2nd molars contain a cusp of Carabelli.

Back 98

TRUE.

Front 99

Which permanent molar do the primary maxillary 2nd molars resemble?

Back 99

Permanent maxillary first molar.

Front 100

Which primary tooth does not resemble any other primary or permanent tooth?

Back 100

Primary mandibular first molar.

Front 101

Which permanent tooth does the primary mandibular second molar resemble?

Back 101

Permanent mandibular first molar (but smaller).

Front 102

How many cusps does the primary mandibular second molar have?

Back 102

5 (like the perm. mand. 1st molar)

Front 103

Which cusp is is largest in the primary mandibular second molar?

Back 103

Distobuccal (unlike the perm mand 1st that it resembles)

Front 104

At what age do permanent teeth begin replacing the primary dentition?

Back 104

6 years

Front 105

What are the first and last teeth to erupt in the primary dentition?

Back 105

First: mandibular central (6months)
Last: maxillary 2nd molar (23months)

aka the 6 year molars

Front 106

What are the first two permanent teeth to erupt?

Back 106

Mand 1st molar followed by max 1st molar

Front 107

At what age do permanent incisors begin to replace primary incisors?

Back 107

6-7yrs

Front 108

Which tooth class is missing from the primary dentition?

Back 108

Premolars.

Front 109

The primary molars are replaced by _____.

Back 109

Premolars.

Front 110

T or F.

Permanent molars erupt distal to the primary 2nd molars.

Back 110

TRUE.

Front 111

Primary molars have a prominent buldge in what region?

Back 111

Mesiobuccal cervical buldge

Front 112

What incisors are wider MD than long IC?

Back 112

Primary max central

Front 113

T or F

The primary lateral is smaller and more symmetrical than the central.

Back 113

FALSE. less symmetrical.

Front 114

What is the root to crown ratio for primary incisors?

Back 114

2:1

Front 115

Compare the size of the primary laterals to the primary central for the maxillary and mandibular dentition.

Back 115

Primary maxillary laterals are smaller than primary max centrals. The opposite is true for the mandibular (lateral is later than central).

Front 116

Where are the proximal contacts located for the primary incisors?

Back 116

Incisal third

Front 117

Of the primary incisors, which arch is more likely to show depressions on the labial surface?

Back 117

Mandibular (in the incisal third)
The labial surface of the maxillarys is smooth

Front 118

Compare the MD and FL dimensions of the primary maxillary central incisors.

Back 118

Wider MD than FL.

Front 119

Compare the MD and FL dimensions of the primary mandibular incisors.

Back 119

Equal.

Front 120

Which primary canine is narrower mesiodistally?

Back 120

Primary mandibular canine.

Front 121

T or F

Primary maxillary canines are as wide as they are long while primary mandibular canines are longer IC than wide MD.

Back 121

TRUE.

Front 122

Which cusp slope is longer on the primary canine?

Back 122

Mesial (permanent canine is distal)

Front 123

Of the primary teeth, which tooth has the longest root?

Back 123

Maxillary canine

Front 124

Where are the proximal contacts located on the primary maxillary canine?

Back 124

Middle 1/3 with the mesial contact more cervical than the distal

Front 125

In which direction does the root of the primary canine bend?

Back 125

Labially (in the apical third)

Front 126

How many cusps does a primary maxillary 1st molar have?

Back 126

Two main cusps: a wide mesiobuccal and a narrow mesiolingual.

Two indistinct cusps: distobuccal and distolingual.

Front 127

In the primary maxillary 1st molar, which cusp is the longest? which is the most prominent?

Back 127

Longest: MB
Prominent: ML

Front 128

What is the occlusal pattern of the primary maxillary first molar?

Back 128

H

Front 129

Which permanent tooth does the ROOT of the primary max 1st molar resemble?

Back 129

Max 1st molar (crown resembles 2nd premolar)

Front 130

What is the shape and location of the proximal contacts of the primary maxillary first molar?

Back 130

Distal: crescent shape, in the middle third
Mesial: round, in the incisal third

Front 131

What is the shape and location of the proximal contacts of the primary maxillary second molar?

Back 131

Distal: crescent shape, incisal third
Mesial: crescent shape, middle third

Front 132

Which cusp is the largest and longest on the primary mandibular first molar?

Back 132

Mesiobuccal

Front 133

Compare the ML and DL cusps of the primary mandibular first molar.

Back 133

ML cusp is larger, longer, and sharper then the DL cusp.

Front 134

Which tooth in the primary dentition has a well developed mesial marginal ridge that resembles a cusp?

Back 134

Primary mandibular first molar

Front 135

T or F

The primary mandibular 1st molar has no central fossa.

Back 135

TRUE.

Front 136

Which primary tooth has a proximal contact in the shape of an inverted crescent?

Back 136

The distal contact of the primary mand 1st molar.
The mesial contact of the primary mand 2nd molar.

Front 137

Where are the proximal contacts of the primary mandibular 1st molar located?

Back 137

Incisal third

Mesial is round, distal is an inverted crescent.

Front 138

For the primary mandibular second molar, arrange the buccal cusps in order from largest to smallest.

Back 138

DB > MB > D

Front 139

T or F

The mesiolingual and distolingual cusps of the primary mandibular second molar are longer than the buccal cusps.

Back 139

FALSE. The lingual cusps are slightly shorter.

Front 140

Where is the mesial contact of the primary mandibular 2nd molar located?

Back 140

Mesial: just below the notch of the marginal ridge (inverted crescent)

Front 141

T or F

The mesial root of the primary mandibular 2nd molar has a longitudinal depression.

Back 141

TRUE.

Front 142

Where is the height of contour on the buccal of ALL posterior teeth (EXCEPT)? lingual?

Back 142

Buccal: Cervical 1/3 (same as anterior teeth); EXCEPT the mand 1st premolar!
Lingual: Middle 1/3 (unlike anterior teeth)

Front 143

In which direction do the CROWNS of mandibular posterior teeth lean?

Back 143

Lingually and distally

Front 144

From the occlusal view, all teeth taper towards the lingual except ____.

Back 144

Max 1st molar & 3 cusp mand 2nd premolar

Front 145

What shape are premolars from the facial view?

Back 145

Pentagon

Front 146

Compare the BL and MD dimensions of all premolars.

Back 146

Maxillary premolars are wider BL than MD (same as canines, unlike maxillary incisors). Mandibular BL & MD are almost equal.

Front 147

In which arch are the 1st and 2nd premolar more similar?

Back 147

Maxillary

Front 148

Compare the sizes of the 1st and 2nd premolars in the maxillary vs mandibular arch.

Back 148

Maxillary: 1st premolar is larger than the 2nd
Mandibular: 2nd premolar is larger than the 1st

Front 149

Which premolar has 2 root branches?

Back 149

Maxillary 1st premolar (occasionally can have 3)

Front 150

T or F

The maxillary posterior crowns are centered over their root while the mandibular possess a lingual and distal inclination.

Back 150

TRUE.

Front 151

How many lobes do premolars develop from?

Back 151

4 (except the 3 cusp mandibular 2nd premolar)

Front 152

Which premolar has a longer mesial cusp ridge?

Back 152

Max 1st

Front 153

Which posterior tooth is the most bilaterally symmetrical?

Back 153

Max 2nd premolar

Front 154

Which premolar tooth has the closest cusp heights?

Back 154

Max 2nd

Front 155

Mesial and distal fossae are closer together than any posterior tooth. This is true for which tooth?

Back 155

Max 2nd premolar

Front 156

What is the longest POSTERIOR tooth? (IC)

Back 156

Max 1st premolar (shorter than all anterior teeth but longest of the posteriors)

Front 157

Which premolar most resembles a canine?

Back 157

Max 1st (but shorter and less prominent cusp tip)

Front 158

T or F

Perikymata lines are visible in the cervical 1/3 of the maxillary 1st premolar.

Back 158

TRUE

Front 159

In the maxillary 1st premolar, which slope is longer?

Back 159

Mesial (ONLY in max 1st premolar. cusp is offset towards the distal)

mesial is longer and straighter while the distal is shorter and more curved.

Front 160

Is the buccal cusp tip of the maxillary 1st premolar towards the mesial, distal, or centered?

Back 160

Distal

Front 161

The maxillary 1st premolar has a concavity on the ____ side (root AND crown)

Back 161

Mesial concavity which continues onto the root

Front 162

What is the shape and location of the mesial contact of the maxillary 1st premolar?

Back 162

Round, middle 1/3, slightly towards the buccal

Front 163

T or F

Both maxillary premolars have a mesial concavity.

Back 163

FALSE. The max 2nd pre does NOT have a mesial concavity.

Front 164

Which tooth has nearly equal buccal and lingual cusp lengths?

Back 164

Max 2nd pre

Front 165

Which premolar has a mesial marginal ridge groove?

Back 165

Max 1st pre

Front 166

ALL teeth are wider FL except _____.

Back 166

Maxillary incisors and mand 1st molar

Front 167

What does the 4th lobe develop into for anterior teeth? for premolars?

Back 167

Anterior: cingulum
Premolars: lingual cusp

Front 168

For posterior teeth, the height of contour on the facial is in the cervical 1/3 slightly more occlusal than the anterior teeth. Except _____.

Back 168

Mand 1st pre

Front 169

What is the shape of the all maxillary premolars from the proximal view?

Back 169

Trapezoidal

Front 170

How do you distinguish left from right for the maxillary 2nd premolar?

Back 170

Lingual cusp is offset towards the mesial.

Front 171

What is the shape of the maxillary 1st premolar from the occlusal view?

Back 171

Hexagon

Front 172

Which tooth has a mesiolingual groove?

Back 172

Mand 1st pre

Front 173

Which posterior tooth has the smallest FL crown?

Back 173

Mand 1st pre

Front 174

Which teeth have a distal contact more occlusal than the mesial contact?

Back 174

Mand 1st pre
Primary max canine

Front 175

In which tooth do the FL and MD crown dimensions show the least difference in the mandible? maxilla?

Back 175

Mand 1st pre

Max lateral

Front 176

Which premolar contains multiple lingual cusps?

Back 176

3 cusp mand 2nd pre

Front 177

Which premolar contains a lingual groove?

Back 177

3 cusp mand 2nd pre (NOT the 2 cusp!)

Front 178

Which premolar has a central fossa but NO transverse ridge or central groove?

Back 178

Mand 2nd pre

Front 179

T or F

The mandibular 1st premolar is much sharper than the 2nd.

Back 179

TRUE.

Front 180

In which teeth would you find the MD dimension to be wider on the lingual than on the facial?

Back 180

3 cusp mand 2nd premolar (NOT 2 the cusp)
Max 1st molar

Front 181

Which tooth is considered the transition between anterior and posterior teeth?

Back 181

MANDIBULAR 1st premolar (not max!)

Front 182

Describe the orientation of the marginal ridges of the mandibular 1st premolar.

Back 182

Distal: horizontal (like posterior teeth)
Mesial: at a 45 degree angle (transitioning from anterior teeth)

Front 183

For which tooth is everything reversed as far as marginal ridge height and contact points?

Back 183

Mand 1st pre

distal contact is higher
distal marginal ridge is higher

(typically the contact is higher on the mesial and the marginal ridge is higher on mesial)

Front 184

In which premolar is the lingual cusp nonfunctional?

Back 184

Mand 1st pre (very short)

Front 185

Compare the height of the lingual cusp of the 2 cusp mandibular 2nd premolar to the 3 cusp type.

Back 185

The lingual cusp is the same height as the ML cusp of the 3 cusp mand 2nd pre.

Front 186

Which cusp is the tallest on the lingual side?

Back 186

ML of the 3 cusp and 2nd pre

Front 187

In which posterior tooth can you see the occlusal surface from the lingual view?

Back 187

Mand 1st pre

Front 188

The 2 cusp mand 2nd pre can be ___ or ____ shaped.
The 3 cusp mand 2nd pre is a ____ shape.

(letter)

Back 188

2 cusp: U or H
3 cusp: Y (most common)

Front 189

What is the shape of the mandibular 1st premolar from the occlusal view? 2nd?

Back 189

1st: Diamond
2nd: Square

Front 190

How many lobes do molars develop from? what is the exception?

Back 190

4 lobes. EXCEPT the mand 1st molar (and some max/mand 3rd) which is 5 lobes

Front 191

T or F

The crowns of mandibular and maxillary molars are wider MD than long OC.

Back 191

TRUE.

Front 192

T or F

For the molars, mandibular root trunks are longer than maxillary root trunks.

Back 192

FALSE. Mandibular are shorter.

Front 193

All the the feature of molars get smaller as you mean from anterior to posterior. EXCEPT:

Back 193

Root truck gets larger.

crown dimensions, cusp size, root length, root separation all decrease

Front 194

Which tooth contains a Cusp of Carabelli? Where? Does this come from a lobe?

Back 194

Max 1st molar.
On the ML cusp.
NO, it is a "tubercle"

Front 195

What is the outline of the maxillary 1st and 2nd molars from the occlusal view? mandibular?

Back 195

Max: Twisted parallelogram or rhomboid
Mand: Rectangular (except mand 1st which is a pentagon)

Front 196

What are the acute and obtuse angles of the maxillary 1st and 2nd molars?

Back 196

Acute: MB, DL
Obtuse: ML, DB

Front 197

Which tooth has the largest FL crown dimension?

Back 197

Max 1st & 2nd molar

Front 198

In which arch do you find oblique ridges?

Back 198

Maxillary (molars)

Front 199

Which teeth have a centered distal contact?

Back 199

Max lateral
Max canine
Max 1st molar
Max 2nd molar
Mand 2nd molar

Front 200

In which molar(s) would you find a distolingual groove?

Back 200

Max 1st & 2nd

Front 201

Which tooth has the shortest OC crown?

Back 201

Max 3rd molar

Front 202

Which tooth has the greatest morphologic variation?

Back 202

Max 3rd molar (and mand 3rd)

Front 203

Which tooth has the shortest root in the maxillary arch?

Back 203

Max 3rd molar

Front 204

Which tooth has the most distal root inclination in the maxillary arch?

Back 204

Max 3rd molar

Front 205

Which tooth has 3 facial cusps?

Back 205

Mand 1st molar (sometimes mand 3rd molar)

Front 206

Which tooth has more than one facial developmental grooves?

Back 206

Mand 1st molar

Front 207

Which tooth has the largest MD crown dimension in the mouth?

Back 207

Mand 1st molar

Front 208

Which tooth has the largest FL dimension in the mandibular arch?

Back 208

Mand 1st molar

Front 209

Which tooth has the longest root of any molar?

Back 209

Mand 1st molar

Front 210

Which tooth shows the greatest MD root separation in the mouth?

Back 210

Mand 1st molar

Front 211

Which tooth has the greatest FL dimension on its mesial root?

Back 211

Mand 1st molar

Front 212

Which tooth has the shortest root in the mandibular arch?

Back 212

Mand 3rd molar

Front 213

Which tooth has the smallest OC crown in the mandibular arch?

Back 213

Mand 3rd molar

Front 214

T or F

For posterior teeth, the mesial root curvature extends beyond the height of curvature of the crown. The root tip on the distal root extends beyond the height of contour of the crown.

Back 214

TRUE.

Front 215

What is the occlusal outline of the mandibular 1st molar?

Back 215

Hexagon

Front 216

Which tooth shows a distinguishable mesiofacial prominence?

Back 216

Mand 2nd molar

Front 217

What is the occlusal shape of the maxillary 2nd premolar?

Back 217

Oblong or oval

Front 218

On both maxillary premolars, the lingual cusp tip is offset to the _____.

Back 218

Mesial

Front 219

The cusp tip of the mandibular 1st premolar is offset towards the ____.

Back 219

Mesial

Front 220

For the mandibular 1st premolar, which slope is shorter?

Back 220

Mesial (because the cusp tip is offset mesially)

Front 221

Where is the mesiolingual developmental groove located on the mandibular 1st premolar?

Back 221

Between the lingual cusp and the mesial marginal ridge

Front 222

T or F

The cusp tip of the mandibular 2nd premolar is offset towards the mesial.

Back 222

FALSE. It is centered mesiodistally. The cusp tip of the mandibular 1st premolar and the lingual cusp of maxillary premolars are offset mesially.

Front 223

For the 3 cusp mandibular 2nd premolar, which lingual cusp is bigger?

Back 223

ML is wider and longer than the DL

Front 224

In the 3 cusp mandibular 2nd premolar, the lingual groove is offset towards the ______.

Back 224

Distal

Front 225

Compare the FL and OC dimensions of the mandibular premolars.

Back 225

Then mand 2nd pre is wider FL but shorter OC than the 1st premolar

Front 226

What is the only posterior tooth not to have a transverse ridge?

Back 226

3 cusp mand 2nd pre

Front 227

What are the only two teeth in the human dentition not to taper towards the lingual?

Back 227

3 cusp mand 2nd premolar
Max 1st molar

Front 228

Where are the proximal contacts of all molars generally located?

Back 228

Mesial: at the junction of the occlusal and middle 1/3
Distal: at or near the middle 1/3

Front 229

How many roots do maxillary molars have? mandibular?

Back 229

Max: 3
Mand: 2

Front 230

Compare the MD and FL dimensions of maxillary molars and mandibular molars.

Back 230

Max: wider FL than MD
Mand: wider MD than FL

opposites!

Front 231

For maxillary molars, the oblique ridge transverses diagonally from ____ to _____.

Back 231

ML to DB

Front 232

How many cusps do maxillary 2nd molars have? 1st?

Back 232

2nd: FOUR (3 major: 2 buccal, 1 lingual. and a distolingual that is sometimes not present)

1st: FIVE (2 buccal 3 lingual)

Front 233

How many cusps are found in a mandibular 1st molar?

Back 233

5 (2 buccal 2 lingual 1 distal)

Front 234

Describe the CEJ on the buccal and proximal sides of molars

Back 234

Buccal: straight
Proximal: slight occlusal curvature

Front 235

T or F

The crowns of ALL mandibular posterior teeth tilt lingually (and distally for mandibular molars)

Back 235

TRUE.

Front 236

For the maxillary molars, arrange the roots from longest to shortest.

Back 236

Palatal > MB > DB

Front 237

The molar root trunk is longer in which arch?

Back 237

Maxillary

Front 238

How many fossae do mandibular molars have? what is the order from largest to smallest?

Back 238

THREE

Central > mesial triangular > distal triangular

Front 239

How many fossae do maxillary molars have? what is the order from largest to smallest?

Back 239

FOUR

Central > mesial triangular > long distal > distal triangular

Front 240

Have many occlusal groove patterns are found in mandibular molars and what are they?

Back 240

THREE

Y-type: 1st molar
+ type: 2nd molar
X type: 2nd molar

Front 241

What is the shape of the mandibular 1st molar?

Back 241

Pentagon

Front 242

What tooth has the largest MD dimension in the mouth?

Back 242

Mand 1st molar

Front 243

What is the order of cusp SIZES of the mand 1st molar? LENGTHS?

Back 243

SIZE: MB > ML > DL > DB > D
LENGTH: ML > DL > MB > DB > D

Front 244

What cusp is the largest, highest, and widest on the buccal side?

Back 244

MB of the mand 1st molar

Front 245

What is the order of cusp LENGTHS for the mand 2nd molar?

Back 245

ML > DL > MB > DB

Front 246

What is the order of cusp SIZES for the maxillary 1st & 2nd molars?

Back 246

ML > MB > DB > DL

Front 247

Which tooth may potentially be heart shaped?

Back 247

3 cusp max 2nd molar (distolingual cusp is missing)

Front 248

What teeth show the greatest morphologic variance?

Back 248

MAX 3rd molars

Front 249

What is the shortest tooth is the mouth?

Back 249

Maxillary 3rd molar

Front 250

Which teeth have the longest root trunk?

Back 250

3rd molars

Front 251

T or F

The MB root of maxillary molars and the mesial root of mandibular molars have 2 canals.

Back 251

TRUE

Front 252

Compare the BL and MD dimensions of premolars vs anterior teeth.

Back 252

Premolars: BL > MD
Anterior: MD > BL

EXCEPT: canines and mandibular incisors

Front 253

Which posterior tooth is the most rounded and symmetrical?

Back 253

Max 2nd pre

Front 254

Longest posterior crown?

Back 254

Max 1st pre

Front 255

How can you distinguish a maxillary canine from and maxillary 1st premolar?

Back 255

The mesial slope is shorter on the canine while the distal slope is shorter on the premolar.

Front 256

T or F

Even if the maxillary 1st premolar has a single root it will always have 2 canals.

Back 256

TRUE

Front 257

What is the shape of the root of the maxillary 1st premolar?

Back 257

Kidney shaped

Front 258

Which root is shorter in the maxillary 1st premolar?

Back 258

Lingual (generally)

buccal root has a greater circumference

Front 259

Which premolar can occasionally have 3 roots?

Back 259

Max 1st pre (2 buccal, 1 lingual)

Front 260

T or F

The distal slope is longer for the canines and the mandibular 1st premolar while the mesial slope is longer for the maxillary 1st premolar and the primary canine

Back 260

TRUUUE!!

Front 261

Which tooth has "snake eyes" ?

Back 261

Mand 1st pre

Front 262

What is the shape of maxillary posterior teeth from the proximal view? Mandibular?

Back 262

Max: trapeziod
Mand: rhomboid (parallelogram)

Front 263

Occlusal shapes of premolars?

Back 263

Hexagon, oval/oblong, diamond, square

(max 1st, 2nd, mand 1st, 2nd)

Front 264

What incisal embrasure has the WIDEST angle? longest incisal embrasure?

Back 264

Between max canine and premolar
Btwn max canine and lateral

Front 265

When is the dentin formation complete for primary teeth?

Back 265

About 18 months after erruption

Front 266

Eruption of max central

Back 266

7-8yrs

Front 267

Primary teeth are smaller than the teeth they are succeeded by EXCEPT:

Back 267

Mand molars (primary mand molars are wider MD than permanent premolars!)