Quiz #2 part 2: Permanent TEETH. INCISORS Flashcards
PEG-SHAPED LATERAL INCISOR
Define this dental anomaly
This is exhibited as a failure of the MESIAL and DISTAL developmental lobes of calcification to either develope or colesce in a normal manner
PEG-SHAPED LATERAL INCISOR
The tooth typically has a normally developed _________ lobe and ________ lobe.
MIDDLE and LINGUAL
PEG-SHAPED LATERAL INCISOR
It is primarily seen on which tooth?
PERMANENT MAXILLARY LATERAL INCISOR.
PEG-SHAPED LATERAL INCISOR
The Peg-shaped lateral incisor is the most common anomaly in tooth shape in which region of the oral cavity?
ANTERIOR REGION OF THE PERMANENT DENTITION.
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.
apically- positioned.
-It is NOT a semicircle in shape as is seen on the facial surface)
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.
INCISAL ONE-HALF
“DISH-SHAPED”
Lingual Aspect: Permanent Maxillary Central Incisor
* The lingual fossa is bound to which two ridges and the cingulum?
LINGUO-INCISAL ridge, the MESIAL and DISTAL marginal ridges.
Lingual Aspect: Permanent Maxillary Central Incisor
* Lingual fossa is _________________ in shape.
TRAPEZOIDAL (NOT TRIANGULAR)
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.
cervical
2
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
DISTAL
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)
FLAT
CONVEXITY
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)?
CINGULUM
CONCAVE
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.
“S”
CONVEXITIES
CONCAVITY
MESIAL ASPECT OUTLINES AND ROOT STRUCTURE: PERMANENT MAXILLARY CENTRAL INCISOR
* The root surface is relatively _________ (concave or convex) and ________ (texture)
CONVEX
SMOOTH
MESIAL ASPECT OUTLINES AND ROOT STRUCTURE: PERMANENT MAXILLARY CENTRAL INCISOR
- The root is _______ -shaped with the _______ apex centered faciolingually
CONE-shaped
BLUNT
FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
- The crown length is _______mm ________ (shorter or longer) than the maxillary central incisor.
1.0-1.5mm
SHORTER
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 ________
2.0mm LESSER
LONG AND NARROW.
FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
The crown outline is _________ with the shorter parallel side at the __________.
TRAPEZOIDAL
CERVIX
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.
ROUNDED
ROUNDED
FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
- The distoincisal line angle is more ____________ (rounded or flat) than the mesioincisal angle.
ROUNDED.
FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
The mesial proximal contact area is at the level of the junction of the ________ and ________ of the crown.
INCISAL
MIDDLE THIRDS
FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
The distal contact area is at a level near the middle of the _______________ of the crown.
MIDDLE 1/3
FACIAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
Does the root apex typically curve and if so, towards which direction.
YES
has a DISTAL CURVATURE
INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
- Is the crown wider mesiodistally than it is faciolingually?
YES.
MESIODISTALLY (6.5mm)
FACIOLINGUALLY (6.0mm)
INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
- The incisal ridge is centered _______________?
FASCIOLINGUALLY.
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
FACIAL And LINGUAL
CONVEXITY toward the facial.
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.
CONVEX
ROUNDED
LESS
INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
- The lingual crown outline converges _______ (round, flat, sharply) toward the lingual.
SHARPLY
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.
DISTAL
INCISAL ASPECT: PERMANENT MAXILLARY LATERAL INCISOR
- All cinguli on ____________ teeth incline or point, or are oriented slightly toward the ___________ (mesial or distal)
ANTERIOR
DISTAL
FACIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS
- The ________ (mesial or distal) outline may be slightly straighter than the __________ (mesial or distal)
MESIAL
DISTAL
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
DISTAL
Facial view- permanent mandibular central incisors
*When viewing the facial aspect of this crown, it is considered to be bilaterally ______________ ( symmetrical or asymmetrical.
bilaterally SYMMETRICAL
Facial view- permanent mandibular central incisors
The root converges _______________- (evenly or unevenly) to a relatively pointed apex
EVENLY
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.
DISTAL
MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS
- The incisal edge will be __________ (lingual or facial) to the faciolingual long axis bisector
LINGUAL
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)
FACIAL
0.5mm
LINGUAL
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
0.5mm
FACIAL
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.
will NOT
1mm
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.
ARE NOT
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
MORE
FACIAL
MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS
- The root converges APICALLY, evenly toward a relatively _________ (blunt (rounded) or sharp) root end.
BLUNT
MESIAL VIEW – PERMANENT MANDIBULAR CENTRAL INCISORS
- A wide longitudinal root depression is usually found for most of the length of the root. (T/F)
TRUE
PERMANENT MANDIBULAR INCISORS
- What two characteristics will help distinguish a middle central incisor from a lateral central incisor
CROWN SIZE AND ANGULARITY of the incisor.
central incisor is SMALLER and slightly more “ANGULAR” than the lateral incisor
PERMANENT MANDIBULAR INCISORS
- The central incisor is __________ (smaller or bigger) than the lateral incisor
SMALLER
PERMANENT MANDIBULAR INCISORS
- The central incisor is slightly ________ (more or less) “angular” than the lateral incisor
MORE “angular”
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
True
FALSE. Roots are rarely bifurcated
2
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
STRAIGHT
LINGUAL twist
DISTAL
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.
SYMMETRY
TWISTING
PERMANENT MANDIBULAR INCISORS
The crests of the cingulum on BOTH incisors are offset slightly to the __________ (mesial or distal)
DISTAL
PERMANENT MANDIBULAR INCISORS
(T/F) Both incisors have inconspicuous lingual surface anatomy, especially in comparison to their maxillary counterparts.
TRUE
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
INCISAL THIRD
LESS
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.
LINGUALLY
