Exam #1

Question 1

________ periodontal fibers are known to resist forceful impaction of a tooth into the alveolus, consistent with many types of trauma

Answer 1

Oblique

Question 1

With respect to the primary tooth crowns:

The enamel is relatively _____ & has consistent depth. The dental thickness is ________. The pulp horns are ______ & the pulp chambers are ________ large. Pulp horns protrude higher underneath crown heights because their dentin thickness is ________.

Answer 1

thin

limited

high

proportionally

minimal

Question 2

With respect to the facial view of the primary mandibular first molar:

1. The cervical ridge is quite _______ in the mesial half and fades _____ onto the distofacial cervical third.
2. The mesial root is much ______ and more ______ than the distal root.

Answer 2

1. convex; out
2. longer; straight

Question 3

Why do the pulp horns of primary teeth protrude heigher than in permanent?

Answer 3

Dentin thickness is minimal which allows for larger and taller pulp chambers/horns

Question 4

What is the function of the transseptal periodontal fibers?

Answer 4

Help maintain contiguous proximal contact

Question 4

With respect to the occlusal view of the primary mandibular second molar:

1. The tooth possesses a ______ and ______ central developmental groove.
2. There is a distinct _______ marginal ridge groove.
3. The distal marginal ridge has a _____ instead of a groove that splits it into two segments.

Answer 4

1. long; winding
2. mesial
3. “notch”

Question 5

Lingual embrasures on the maxillary first molar are ________ than their respective facial embrasures.

Answer 5

smaller; this is because the crown tapers to the facial

Question 6

A condition of having more than the usual number of teeth in the primary dentition is termed?

Answer 6

Primary hyperdontia (supernumerary primary teeth)

Question 7

What is the function of oblique periodontal fibers?

Answer 7

Resist forceful impaction of tooth ito alveolus which is consistents with trauma.

Question 7

With respect to the incisal view of the primary lateral incisors:

The incisal ridge is curved toward the _______ surface.

Answer 7

facial

Question 8

“V” shaped spaces that are created when two teeth in the same arch exhibit proximal contact are called ________.

Answer 8

Embrasures

Question 9

________ periodontal fibers help to maintain contiguous proximal contact

Answer 9

Transseptal

Question 10

With respect to the occlusal view of a primary mandibular second molar:

Do the triangular ridges located on each cusp meet to form transverse ridges?

Answer 10

No. There are significant triangular ridges but none meet to form transverse ridges.

Question 12

Compare & Contrast primary vs permanent crowns:

1. Crown color
2. Enamel thickness
3. Dentin thickness
4. Pulp chamber size (proportionally)
5. Pulp horn height
6. Position of enamel rods in cervical third

Answer 12

1. Primary teeth have whiter crowns (permanent= yellower)
2. Primary teeth have thinner enamel
3. Primary teeth have thnner dentin
4. Primary teeth have proportionally larger pulp chambers
5. Primary teeth have taller pulp horns
6. Primary teeth enamel rods positioned occlusally, while permanent teeth’s are positioned apically.

Question 13

In an ideal embrasure construct, every contact area produces _____ embrasures that are continuous and _______ with each other.

Answer 13

Four; contiguous

Question 13

With respect to the lingual view of the primary maxillary first molar:

1. The mesiolingual cusp is more prominant on the _______ surface than the distolingual cusp.
2. The distolingual cusp, if visible, is ______.

Answer 13

1. Lingual
2. Small

Question 14

Is hyperdontia seen in permanent dentition?

Answer 14

You know it, brah

Question 16

With respect to the Height of Contour on the Mandibular Arch:

1. All facial surfaces: ____ mm located in the _______ third.
2. Anterior lingual surface: _____ mm located in the _____ third.
3. First Premolar lingual surface: _____ mm located in ______ third.
4. Second Premolar lingual surface: ____ mm located in _______ third.
5. Molar lingual surface: _____ mm located in _____ third.

Answer 16

1. 0.5; cervical
2. 0.5; cervical
3. 0.5; middle
4. 0.75; middle
5. 1.0; middle

Question 18

True or false:

Can an embrasure exist with a diastema?

Answer 18

True. It is not necessary for the adjoining teeth to physically touch.

You know Michael Strahan be lovin him some embrasures in the diastema.

Question 19

With respect to the occlusal view of the primary mandibular second molar:

1. Mesiofacial & distofacial developmental grooves separate the _____ cusps.
2. Major fossae include the ______, ______ triangular and ______ triangular fossa.

Answer 19

1. 3
2. lingual

Question 21

The most common location in the mandible for a permanent supernumerary tooth to exist is the mandibular ______ _______.

Answer 21

second premolar

Question 22

With respect to the facial view of the primary mandibular first molar:

1. The mesiofacial cusp is ______ and ______ than the distofacial cusp.
2. There is a short or indistinct facial developmental groove that looks more like a ________.
3. The cervical line significantly points or dips _______ onto the mesial root surface on the mesial half of the tooth.

Answer 22

1. larger; taller
2. depression
3. apically

Question 23

Supernumerary permanent teeth are commonly seen with all of the following EXCEPT:

A. Maxillary Central Incisors

B. Maxillary Lateral Incisors

C. Mandibular Premolars

D. Mandibular First Molars

E. Mandibular Third Molars

Answer 23

D. Mandibular first molars.

Question 24

The surfaces of teeth facing toward the adjoining or adjacent teeth in the same arch are ______.

The surfaces of teeth that are parallel to the long axis of the tooth (mesial, distal, facial, lingual) are ______.

Answer 24

proximal surfaces

axial surfaces

Question 25

The oblique ridge is a "special kind" of transverse ridge made of a union of the triangular ridge of the _________ cusp & the distal cusp ridge of the _________ cusp.

Answer 25

distofacial mesiofacial

Question 26

The union of the triangular ridge of the distofacial cusp & the distal cusp ridge of the mesiolingual cusp is known as:

Answer 26

oblique ridge

Question 27

A depression or valley or space on the surface of the tooth betwen two ridges or cusps is called \_\_\_\_\_\_\_.

Answer 27

sulcus

Question 28

A sulcus is a ________ or space. It is NOT a groove. At the bottom of a sulcus is a \_\_\_\_\_\_.

Answer 28

depression groove

Question 29

The first evidence of calcification in primary teeth is seen in:

Answer 29

maxillary and mandibular central incisors at 14 weeks

Question 30

The last primary tooth to begin calcification is:

Answer 30

maxillary second molar at 19 weeks

Question 31

The first primary teeth to exfoliate are:

Answer 31

maxillary & mandibular central incisors at 6.5 years

Question 32

The last primary tooth to exfoliate is:

Answer 32

maxillary second molar at 11 years

Question 33

The first permanent tooth to erupt is:

Answer 33

maxillary and mandibular first molar at 6 years

Question 34

The first permanent roots to completely form are:

Answer 34

maxillary first molar, mandibular central incisors and mandibular first molar at 9 years.

Question 35

The tuberculum intermidium is an __________ of either the distal cusp ridge of the mesiolingual cusp or the mesial cusp ridge of the distolingual cusp.

Answer 35

overdevelopment

Question 36

An overdevelopment of either the distal cusp ridge of the mesiolingual cusp or the mesial cusp ridge of the distolingual cusp.

Answer 36

Tuberculum intermedium

Question 37

With respect to the plane of occlusion: 1. The ideal plane is not \_\_\_\_\_. 2. A flat plane allows for too many _______ on most posterior teeth on both sides of the mouth.

Answer 37

1. flat 2. contacts

Question 38

With respect to the plane of occlusion: 1. The proper plane of occlusion will permit simultaneous _______ contacts. 2. A ________ plane permits maximum use of tooth contacts during function. 3. The teeth are _________ positioned in the arches at varied and coordinated _________ of inclination.

Answer 38

1. functional 2. curved 3. strategically; degrees

Question 39

Proximal contact areas of mandibular teeth: Midline Distal of Central Mesial of Lateral Distal of Lateral Mesial of Canine Distal of Canine

Answer 39

5 I's and and M (first 5 incisal third & last is middle third) \*Note none of the are in the junction or or cervical third\*

Question 40

Are any of the proximal contact areas of mandibular anterior teeth in a junction or the cervical third?

Answer 40

El negatív

Question 41

\_\_\_ arises through the union of two normally separated tooth germs and depending upon the stage of development of the teeth, it may be either complete or incomplete. It can also be the union of a normal tooth bud to a ___ tooth germ.

Answer 41

Tooth Fusion supernumerary

Question 42

In fused teeth are the pulp chambers fused? Fusion is commonly seen with the ___ and \_\_\_.

Answer 42

Maxillary second and third molars

Question 43

Why is the permanent maxillary central incisor easily extractable? (2 reasons)

Answer 43

The root is cone-shaped witha relatively blunt apex. There is no evidence of root survace development depressions.

Question 44

For the permanent maxillary lateral incisor, the crown length is ____ than the maxillary central incisor. The crown width is ___ than the maxillary central incisor. Its root apex typically has a ___ curvature associated with it.

Answer 44

1.0 - 1.5 mm shorter, 2.0 mm less distal

Question 45

For the permanent maxillary lateral incisal ridge and root apex ____ (will/will not) be in line with each other. The incisal ridge is centered ____ over the crown and main body of the root.

Answer 45

will not faciolingually

Question 46

For the permanent mandibular central incisors the incisal edge will be ___ to the faciolingual long axis bisector. The enamel on the facial surface will extend ___ about __ mm more than it does on the lingual.

Answer 46

lingual apically, 0.5

Question 47

For the permanent mandibular lateral incisors the incisal edge is straight but may appear slanted toward the \_\_\_. the mesial incisal line angle is sharp but the distal incisal line angle is usually a little more \_\_\_. Due to the curvature in the crown outline, the crown is not \_\_\_. The crest of the gingival curvature of the cervical line will be slightly ___ to the mesiodistal long axis bisector.

Answer 47

distal rounded symmetrical distal

Question 48

The incsical ridge of the permanent mandibular lateral incisors is located slightly toward the ___ surface when compared to the faciolingual long axis bisector that travels throught he root apex.

Answer 48

lingual

Question 49

The permanent maxillary canine cusp tip is either ___ or slightly ___ to the vertical center of the tooth.

Answer 49

in line or slightly mesial (never distal)

Question 50

Are the following statements true regarding the permanent maxillary canine? The cusp tip is aligned with the root tip and the height of curvature of the cervical line. There is a pronounced convexity which is cervical to the distal contact area.

Answer 50

First is true, second is false. There is never a convexity but there is a concavity.

Question 51

Permanent Mandibular Canine: Cusp tip is ___ to the faciolingual bisector. There is a significant ___ curvature of the cervical line. The\_\_\_\_ is not pronounced. A root surface developmental depression is ___ which increases the possibility of \_\_\_\_.

Answer 51

lingual incisal cingulum pronounced and deep; two roots

Question 52

The permanent maxillary first premolar lingual cusp tip is less pointed and about ___ than the facial cusp. The lingual cusp tip is slightly ___ to the mesiodistal long axis bisector. The mesial and distal outlines of the of the lingual cusp will both be slightly \_\_\_. Which surface(s) of the crown are visible?

Answer 52

1.0 mm shorter mesial convex both mexial and distal surfaces of the crown are visible.

Question 53

For the permanent maxillary first premolar the crest of this mesial marginal ridge is almost ___ to the faciolingual long axis bisector. It is divided into a facial and a lingual segment by the \_\_\_\_.

Answer 53

perpindicular, mesial marginal developmental groove

Question 54

For the permanent maxillary first premolar the crest of the lingual segment lingually is distinctly ___ to the mesiodistal bisector of the crown. The facial cusp tip is ___ to the mesiodistal bisector and ___ the distance from the facial outline to the faciolingual bisector of the crown.

Answer 54

mesial distal, 1/3 (not 1/2)

Question 55

Which tooth is described from a lingual perspective? The tip of the lingual cusp is in line with the tip of the facial cusp and nearly equal in height and a little more rounded than the facial cusp. The cuspal ridges of the lingual cusp will not be as high occlusally as those of the facial cusp and will present the same angle of slant from the tip of the cusp.

Answer 55

Permanent Maxillary Second Premolar

Question 56

Why is the permanent maxillary second premolar described as having a relatively short central groove and relatively wide marginal ridges?

Answer 56

It has mesial and distal triangular fossae that are irregularly shaped. They are nearer the center of the tooth when compared to the triangular fossae on the maxillary first premolar.

Question 57

With respect to occlusal view of the permanent mandibular second premolar: 1. There are ________ angle connections that are evident between the cuspal ridges and the adjacent marginal ridges. 2. The three-cusp variety does not have a _________ ridge. 3. The central groove has a mesial and distal component and is _________ positioned. 4. On the three-cusp variety, the outline of the developmental grooves is a ______ shaped pattern.

Answer 57

1. right 2. transverse 3. lingually 4. Y

Question 58

With respect to the lingual view of the permanent mandibular second premolar: 1. The three-cusp variety has 2 _______ cusps with a _________ groove on both cusps. 2. The lingual groove is _________ positioned. 3. The mesiolingual cusp tip is approximately ______ mm shorter than the facial cusp tip. 4. The distolingual cusp tip is about ______ mm shorter than the facial cusp tip.

Answer 58

1. lingual; lingual 2. distally 3. 1.5 4. 2.0

Question 59

With respect to the occlusal view of the permanent mandibular first premolar: 1. The mesial triangular fossa has a mesial groove at the bottom of it that is _________ in shape & is continuous with the ____________ groove. 2. At the bottom of the distal triangular fossa is a ________ shaped distal groove. 3. The central groove is located on the lingual side of the tooth & will bend or be oriented to the __________ surface.

Answer 59

1. linear; mesiolingual 2. comma 3. lingual

Question 60

With respect to the mesial view of the permanent mandibular first premolar: 1. A very ________ and somewhat \_\_\_\_\_\_\_\_\_\_\_\_-positioned lingual cusp triangular ridge is seen. 2. The _________ groove is positioned on the lingual portion of the crown. 3. There is a ______ degree angle to the crest of the mesial marginal ridge. 4. A distinct mesiolingual groove is present that is located at the mesiolingual line angle, but is NOT continuous with the mesiolingual coronal \_\_\_\_\_\_\_\_\_\_\_\_\_.

Answer 60

1. short; horizontally 2. central 3. 45 4. depression

Question 61

With respect to the lingual view of the permanent mandibular first premolar: 1. The lingual cusp has consistent ___________ qualities to the anatomy. 2. The lingual cusp tip is approximately _______ the height of the facial cusp tip. 3. A __________ & ___________ lingual cusp tip is evident.

Answer 61

1. cingulum 2. two-thirds 3. pointed; centered