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Dental Anatomy > Quiz #2 part 2: Permanent TEETH. INCISORS > Flashcards

Quiz #2 part 2: Permanent TEETH. INCISORS Flashcards

1
Q

PEG-SHAPED LATERAL INCISOR

Define this dental anomaly

A

This is exhibited as a failure of the MESIAL and DISTAL developmental lobes of calcification to either develope or colesce in a normal manner

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2
Q

PEG-SHAPED LATERAL INCISOR

The tooth typically has a normally developed _________ lobe and ________ lobe.

A

MIDDLE and LINGUAL

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3
Q

PEG-SHAPED LATERAL INCISOR

It is primarily seen on which tooth?

A

PERMANENT MAXILLARY LATERAL INCISOR.

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4
Q

PEG-SHAPED LATERAL INCISOR

The Peg-shaped lateral incisor is the most common anomaly in tooth shape in which region of the oral cavity?

A

ANTERIOR REGION OF THE PERMANENT DENTITION.

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5
Q

Lingual Aspect: Permanent Maxillary Central Incisor
* The cervical outline of the crown is more ________- positioned (Away from the incisal) then what is seen on the facial aspect.

A

apically- positioned.

-It is NOT a semicircle in shape as is seen on the facial surface)

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6
Q

Lingual Aspect: Permanent Maxillary Central Incisor
*The lingual fossa in the ___________ ___ (surface and number) of the crown surface is described as wide, shallow “____-shaped” depression.

A

INCISAL ONE-HALF

“DISH-SHAPED”

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7
Q

Lingual Aspect: Permanent Maxillary Central Incisor

* The lingual fossa is bound to which two ridges and the cingulum?

A

LINGUO-INCISAL ridge, the MESIAL and DISTAL marginal ridges.

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8
Q

Lingual Aspect: Permanent Maxillary Central Incisor

* Lingual fossa is _________________ in shape.

A

TRAPEZOIDAL (NOT TRIANGULAR)

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9
Q

Lingual Aspect: Permanent Maxillary Central Incisor
* The cingulum is well-developed in the _____________ 1/2 of the crown and often has ______(number) ridge projections that impinge on the lingual fossa in the middle third.

A

cervical

2

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10
Q

Lingual Aspect: Permanent Maxillary Central Incisor
* The greatest curvature lingually of the cingulum and the crest of the cervical line gingivally will be slightly _____________ (mesial or distal) to the mesiodistal bisector of the crown

A

DISTAL

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11
Q

MESIAL ASPECT OUTLINES AND ROOT STRUCTURE: PERMANENT MAXILLARY CENTRAL INCISOR
(on quiz, which of the following.. but only one is true)

  • The facial outline of the crown from the crest of the facial cervical ridge to the incisal ridge is relatively ________ (sharp, flat, curved) ( it shows very little ________ (concavity or convexity)
A

FLAT

CONVEXITY

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12
Q

MESIAL ASPECT OUTLINES AND ROOT STRUCTURE: PERMANENT MAXILLARY CENTRAL INCISOR

  • The lingual outline of the crown from the ____________ to the incisal ridge is slightly ___________ ( concaved or convexed)?
A

CINGULUM

CONCAVE

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13
Q

MESIAL ASPECT OUTLINES AND ROOT STRUCTURE: PERMANENT MAXILLARY CENTRAL INCISOR
* The lingual outline of the crown is said to have an “______” shaped contour, denoting the _______ (convex or concave) over the cingulum and linguo-incisal ridge and a (convex or concave) over the lingual fossa.

A

“S”
CONVEXITIES
CONCAVITY

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14
Q

MESIAL ASPECT OUTLINES AND ROOT STRUCTURE: PERMANENT MAXILLARY CENTRAL INCISOR
* The root surface is relatively _________ (concave or convex) and ________ (texture)

A

CONVEX

SMOOTH

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15
Q

MESIAL ASPECT OUTLINES AND ROOT STRUCTURE: PERMANENT MAXILLARY CENTRAL INCISOR

  • The root is _______ -shaped with the _______ apex centered faciolingually
A

CONE-shaped

BLUNT

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16
Q

FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • The crown length is _______mm ________ (shorter or longer) than the maxillary central incisor.
A

1.0-1.5mm

SHORTER

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17
Q

FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • The crown width is _____mm ______ (lesser or greater) than the maxillary central incisor.
    This gives the impression that the maxillary lateral incisor is relatively ______ and ________
A

2.0mm LESSER

LONG AND NARROW.

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18
Q

FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

The crown outline is _________ with the shorter parallel side at the __________.

A

TRAPEZOIDAL

CERVIX

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19
Q

FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

Both the mesial and distal incisal angles are _______ and each is more _______ than the corresponding incisal line angle of the maxillary central incisor.

A

ROUNDED

ROUNDED

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20
Q

FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • The distoincisal line angle is more ____________ (rounded or flat) than the mesioincisal angle.
A

ROUNDED.

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21
Q

FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

The mesial proximal contact area is at the level of the junction of the ________ and ________ of the crown.

A

INCISAL

MIDDLE THIRDS

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22
Q

FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

The distal contact area is at a level near the middle of the _______________ of the crown.

A

MIDDLE 1/3

23
Q

FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

Does the root apex typically curve and if so, towards which direction.

A

YES

has a DISTAL CURVATURE

24
Q

INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • Is the crown wider mesiodistally than it is faciolingually?
A

YES.
MESIODISTALLY (6.5mm)
FACIOLINGUALLY (6.0mm)

25
Q

INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • The incisal ridge is centered _______________?
A

FASCIOLINGUALLY.

26
Q

INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • The incisal ridge crosses approximately midway between the ______ and ________ outline; however, it usually shows some curvature with the _________ (convexity or concavity) toward the facial
A

FACIAL And LINGUAL

CONVEXITY toward the facial.

27
Q

INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • The facial outline is more continuously _________ (convex or concave) than that of the maxillary central incisor and the mesiofacial and distofacial are more ___________ (rounded or flat) and ________ (more or less) prominent.
A

CONVEX
ROUNDED
LESS

28
Q

INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • The lingual crown outline converges _______ (round, flat, sharply) toward the lingual.
A

SHARPLY

29
Q

INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • The crest of the lingual outline of the cingulum will be slightly to the __________ (mesial or distal) of the mesiodistal bisector.
A

DISTAL

30
Q

INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR

  • All cinguli on ____________ teeth incline or point, or are oriented slightly toward the ___________ (mesial or distal)
A

ANTERIOR

DISTAL

31
Q

FACIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • The ________ (mesial or distal) outline may be slightly straighter than the __________ (mesial or distal)
A

MESIAL

DISTAL

32
Q

Facial view- permanent mandibular central incisors

  • The height of curvature of the cervical line may be slightly to the ___________ (mesial or distal) of the mesiodistal long axis bisector
A

DISTAL

33
Q

Facial view- permanent mandibular central incisors

*When viewing the facial aspect of this crown, it is considered to be bilaterally ______________ ( symmetrical or asymmetrical.

A

bilaterally SYMMETRICAL

34
Q

Facial view- permanent mandibular central incisors

The root converges _______________- (evenly or unevenly) to a relatively pointed apex

A

EVENLY

35
Q

Facial view- permanent mandibular central incisors

The root of the apex may be slightly to the _____________ (mesial or distal) of the mesiodistal long axis bisector but it will rarely if ever be curved to any great extent.

A

DISTAL

36
Q

MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • The incisal edge will be __________ (lingual or facial) to the faciolingual long axis bisector
A

LINGUAL

37
Q

MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • The enamel on the ____________- (facial or lingual) surface will extend apically about _______mm more than it does on the ________ (facial or lingual)
A

FACIAL
0.5mm
LINGUAL

38
Q

MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • The measurement of the anatomical crown is _____mm greater on the __________ (facial or lingual) surface than on the lingual surface
A

0.5mm

FACIAL

39
Q

MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • The crests of the cervical ridges (greatest curvatures) __________ (will or will not) be at the same level facially and lingually (the crests of these ridges are about __mm INCISAL to the cervical line.
A

will NOT

1mm

40
Q

MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • Cervical ridges ________ (are or are not) as well developed on the mandibular anterior teeth are they are on the maxillary anterior teeth.
A

ARE NOT

41
Q

MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • The cervical line curves incisally ______ (more or less) on the mesial surface than on the distal surface, with the crest slightly on the _________ (facial or lingual) side of the tooth
A

MORE

FACIAL

42
Q

MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • The root converges APICALLY, evenly toward a relatively _________ (blunt (rounded) or sharp) root end.
A

BLUNT

43
Q

MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS

  • A wide longitudinal root depression is usually found for most of the length of the root. (T/F)
A

TRUE

44
Q

PERMANENT MANDIBULAR INCISORS

  • What two characteristics will help distinguish a middle central incisor from a lateral central incisor
A

CROWN SIZE AND ANGULARITY of the incisor.

central incisor is SMALLER and slightly more “ANGULAR” than the lateral incisor

45
Q

PERMANENT MANDIBULAR INCISORS

  • The central incisor is __________ (smaller or bigger) than the lateral incisor
A

SMALLER

46
Q

PERMANENT MANDIBULAR INCISORS

  • The central incisor is slightly ________ (more or less) “angular” than the lateral incisor
A

MORE “angular”

47
Q

PERMANENT MANDIBULAR INCISORS

Both roots have mesial and distal root surface depression (T/F)
Roots are always bifurcated (T/F)
The lateral incisor more frequently exhibit ____ (#) pulp cancals

A

True
FALSE. Roots are rarely bifurcated
2

48
Q

PERMANENT MANDIBULAR INCISORS

The incisal edge is _______ (straight or curve) on the central incisal, while the incisal edge of the lateral incisor exhibits a _________ (lingual or facial) twist to the ________ (mesial or distal) portion

A

STRAIGHT
LINGUAL twist
DISTAL

49
Q

PERMANENT MANDIBULAR INCISORS

The central incisor exhibits bilateral ____________ (symmetry or asymmetry), while the lateral incisor exhibits a _________ (straight, curve, twist) slightly on its root base, when viewed from the incisal.

A

SYMMETRY

TWISTING

50
Q

PERMANENT MANDIBULAR INCISORS

The crests of the cingulum on BOTH incisors are offset slightly to the __________ (mesial or distal)

A

DISTAL

51
Q

PERMANENT MANDIBULAR INCISORS

(T/F) Both incisors have inconspicuous lingual surface anatomy, especially in comparison to their maxillary counterparts.

A

TRUE

52
Q

PERMANENT MANDIBULAR INCISORS

The contact areas of both incisors are located in the ____________ ( middle, junction of middle and incisal 3rd, cervix, incisal third), but the center incisor is said to exhibit ________ (more or less) incisal embrasure space than the lateral incisor

A

INCISAL THIRD

LESS

53
Q

PERMANENT MANDIBULAR INCISORS

Both incisors, from a proximal view, display an incisal edge that is ____________ ( mesially, distally, facially or lingually) positioned in comparison to the height of curvature of the CEJ and their respective root apices.

A

LINGUALLY

Dental Anatomy (10 decks)

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