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134 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Incisiors function
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The incisors are shearing or cutting teeth.
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most prominent teeth in the mouth
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maxillary central incisors
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vary in form more than any other tooth in the mouth except the third molar
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Maxillary lateral incisors
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o The lateral maxillary incisor is smaller than the central maxillary incisor in all dimensions, except
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root length
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widest mesiodistally of any of the anterior teeth
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• The maxillary central incisor
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labial curvature of crown face of max central incisor compaired to others
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• The labial face of the central incisor is less convex than the maxillary lateral incisor or canine, which gives the central incisor a rectangular appearance
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sides of max central incisor
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mesial straight with root and distal is more curved
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Mesial and distal incisal angles of max central incisor
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o The mesial incisal angle is relatively sharp, the distal incisal angle rounded.
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Bisecting line of maxillary central and lateral incisors
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The incisal ridge of the crown is therefore on a line with the center of the root
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lingual lobe of anterior teeth
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• Cingulum
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bulk of the cervical third of the lingual surface of anterior teeth
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Cingulum
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mound or elevation on the crown of a tooth forming a divisional portion of the occlusal surface
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Cusp
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Max Central incisor-• Between the marginal ridges, below the cingulum, a shallow concavity is present called the ?
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lingual fossa
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Lingual Aspect of Maxillary Central Incisors: extend from the cingulum inso the lingual fossa
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developmental groves
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Lingual Aspect of Maxillary Central Incisors: • The crown and root taper
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lingually
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Mesial Aspect of Maxillary Central Incisors
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Mesial Aspect of Maxillary Central Incisors • The cervical line outlining the cementoenamel junction curves which way
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) mesially on the maxillary central incisor curves incisally to a noticeable degree more so than on the distal
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the incisal curve of the CEJ is greater on which side on most teeth, mesial or distal
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mesial
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max central incisor shape of root apex
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blunt
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peg-shaped laterals
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maxillary lateral incisors with a nondescript, pointed form
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Labial Aspect of Maxillary Lateral Incisors: • Labial aspect of maxillary lateral incisor resembles the central incisor except that it
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has more curvature, incisal ridge is rounded and rounded inicisal angles mesially and distally
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Labial Aspect of Maxillary Lateral Incisors: size compaired to central
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2mm smaller
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Labial Aspect of Maxillary Lateral Incisors: root to crown ratio
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longer root to crown ratio. About 1.5
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Lingual Aspect of Maxillary Lateral Incisors: cingulum
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not prominent
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Lingual Aspect of Maxillary Lateral Incisors: develepmental grooves
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a deep developmental groove at the side of the cingulum, usually on the distal side, which may extend up on the roof for part or all of its length
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Lingual Aspect of Maxillary Lateral Incisors: bisecting line
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go through incisal edge and root apex
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Lingual Aspect of Maxillary Lateral Incisors: lingual fossa
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more concave and circumscribed that that found on the central incisor
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Mesial Aspect of Maxillary Lateral Incisors: cervical line height compaired to distal
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very steep, 1mm taller
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Mesial Aspect of Maxillary Lateral Incisors:
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Mesial Aspect of Maxillary Lateral Incisors:
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Mesial Aspect of Maxillary Lateral Incisors:
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mandibular incisors - mesiodistal dimensions
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smaller than any other teeth
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central or lateral mandib incisor larger?
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• The (mandibular) central incisor is somewhat smaller than the (mandibular) lateral incisor, which is the reverse of the situation of the situation on the maxilla.
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smallest tooth in the dental arches
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• Mandibular central incisor
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mandib central incisor vs. max in root length
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same if not longer
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Labial Aspect of Mandibular Central Incisor apical third of root
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tilt to the distal
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• The labial face of the mandibular central incisor crown
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normally smooth, with a flattened surface at the incisal third; the middle third is more convex, narrowing down to the convexity of the root at the cervical portion
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central incisors and developmental lines
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rarely seen
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MANDIBULAR CENTRAL INCISOR: Facial - The incisal outline
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straight and perpendicular to the long axis
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MANDIBULAR CENTRAL INCISOR: Facial - mesial and distal incisal angles
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almost 90o
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MANDIBULAR CENTRAL INCISOR: Facial - mesial and distal heights of contour
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"near the incisal angle in the incisal 1/3 (highest
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MANDIBULAR CENTRAL INCISOR: Facial - Crown tapers
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gently to the cervical
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MANDIBULAR CENTRAL INCISOR: Facial - convexity
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1/3 of the crown is convex, while the remaining 2/3 is relatively flat
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MANDIBULAR CENTRAL INCISOR: Facial - Root tapers
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evenly to a sharp apex
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MANDIBULAR CENTRAL INCISOR: Facial - root length vs max
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"Root length is almost as long as the maxillary incisors, but it is still the shortest root in the
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MANDIBULAR CENTRAL INCISOR: LINGUAL - come together forming a shallow lingual fossa
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The cingulum, MMR, DMR, and incisal ridge
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MANDIBULAR CENTRAL INCISOR: LINGUAL - The cingulum location
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centered and is the center of calcification for the 4th lobe
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MANDIBULAR CENTRAL INCISOR: LINGUAL - The tooth tapers to the
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lingual
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MANDIBULAR CENTRAL INCISOR: MESIAL - Wider __ than __
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Wider F/L than M/D
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MANDIBULAR CENTRAL INCISOR: MESIAL - The facial surface shape
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"is flat and forms a straight line from the height of contour to the incisal
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MANDIBULAR CENTRAL INCISOR: MESIAL - Facial and lingual height of contour is in the
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cervical 1/3 and, as usual, is .5 mm
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MANDIBULAR CENTRAL INCISOR: MESIAL - The incisal edge location F/L
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"lingual to a bisector, allowing the tooth to sit behind the maxillary
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MANDIBULAR CENTRAL INCISOR: MESIAL - CEJ is curved
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more than any other mandibular tooth (as much as 1/3 of the crown)
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MANDIBULAR CENTRAL INCISOR: MESIAL - Root maintains its width for
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for 2/3 of the length and then tapers to a blunt apex.
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MANDIBULAR CENTRAL INCISOR: MESIAL - Root morphology
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Developmental depression in upper 2/3 of the root
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MANDIBULAR CENTRAL INCISOR: INCISAL - incisal ridge F/L
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lingual to the center, therefore more facial surface is visible
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MANDIBULAR LATERAL INCISORS - variability
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more variable than the central incisor
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MANDIBULAR LATERAL INCISORS - size?
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slightly larger than mandibular central in all dimensions due to the additional distal width
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MANDIBULAR LATERAL INCISORS - symitry
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not as symmetrical as the mandibular central incisor
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MANDIBULAR LATERAL INCISORS - FACIAL - The incisal outline
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slopes downward toward the distal
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MANDIBULAR LATERAL INCISORS - FACIAL - Width M/D
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"crown is wider M/D than the central by approximately 1 mm, and this additional width is
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MANDIBULAR LATERAL INCISORS - FACIAL - facial convexity
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cervical 1/3 or the crown is convex, and the remaining 2/3 is flat
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MANDIBULAR LATERAL INCISORS - FACIAL -
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MANDIBULAR LATERAL INCISORS - FACIAL - root size and orientation
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larger and distially tillted at apex
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MANDIBULAR LATERAL INCISORS - LINGUAL - anatomy
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Anatomical features of the crown blend together to form a smooth surface
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MANDIBULAR LATERAL INCISORS - LINGUAL - cingulum location
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slightly distal
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MANDIBULAR LATERAL INCISORS - LINGUAL - root taper
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taper to lingual
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MANDIBULAR LATERAL INCISORS - MESIAL - Facial and lingual heights of contour
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cervical 1/3.
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MANDIBULAR LATERAL INCISORS - MESIAL - The incisal ridge F/L
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is lingual to a bisector
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MANDIBULAR LATERAL INCISORS - MESIAL - Root F/L and anatomy
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broad and parallel till apical 1/3 where converge there also developmental depression
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MANDIBULAR LATERAL INCISORS - DISTAL - compaired to mesial
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Crown appears thicker, because it is twisted on the root
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MANDIBULAR LATERAL INCISORS - DISTAL - Between the contact and the CEJ
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"there is a slight concavity that is more pronounced than on
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MANDIBULAR LATERAL INCISORS - DISTAL - Root anatomy
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developmental depression deeper on the mesial
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MANDIBULAR LATERAL INCISORS - INCISAL - incisal ridge and F/L bisector
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The incisal ridge is not perpendicular to a F/L bisector.
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MANDIBULAR LATERAL INCISORS - FACIAL - Width M/D
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"crown is wider M/D than the central by approximately 1 mm, b/c extra width on distal side
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MANDIBULAR LATERAL INCISORS - DISTAL - Between the contact and the CEJ
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"slight concavity more pronounced than on the central incisor.
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#6 and #11
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MAXILLARY CANINE
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MAXILLARY CANINE - a protuberance located in the alveolar bone?
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canine eminence
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MAXILLARY CANINE - Superlatives
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longest tooth, longest root, third longest crown behind max central and mandib canine
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None
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MAXILLARY CANINE - Conical shape makes it …
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self clensing and rarely loose it
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MAXILLARY CANINE- how many lobes
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4
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MAXILLARY CANINE - Canine is wider ___ than ___?
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Canine is wider F/L than M/D
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MAXILARY CANINE - Why most stable tooth in mouth
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The thickness of the crown and root make it the most stable tooth in the mouth.
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•MAXILARY CANINE - what better developed than on a central incisor
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Cingulum
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"MAXILARY CANINE - FACIAL - May have a slight (_______) below the CEJ on the mesial outline"
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concavity
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"#6 and #11 - FACIAL- In the middle of the crown, the mesial outline has a"
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convexity
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"#6 and #11 - FACIAL- Mesial height of contour"
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middle and incisal 1/3
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"#6 and #11 - FACIAL- The mesial cusp slope: is shorter/longer than the distal and is slightly what shape?"
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shorter and concave
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"#6 and #11 - FACIAL- Distal contact"
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middle 1/3
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- #6 and #11 - FACIAL - below the CEJ on the distal outline"
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concavity
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None
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"#6 and #11 - FACIAL- which straighter m/d root outlineq"
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mesial
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"#6 and #11 - FACIAL- root slopes what direction"
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distal
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"#6 and #11 - FACIAL- M/D it thinnner than ?"
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central incisor
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#6 and #11 - LINGUAL - CEJ shape
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almost flat
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#6 and #11 - LINGUAL - Tapers to the _____ and has a well-developed _____
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lingual and cingulum
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#6 and #11 - LINGUAL - MMR, DMR, IR and LR form what?
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two mesial and distal lingual fossa
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#6 and #11 - LINGUAL - ___ tends to be heavier and more irregular
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DMR
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#6 and #11 - MESIAL - Widest ___ of all anterior teeth
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F/L
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None
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#6 and #11 - MESIAL - The facial and lingual heights of contour
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the cervical 1/3
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#6 and #11 - MESIAL - labial crown surface shape
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flat from the CEJ to the height of contour
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#6 and #11 - MESIAL - on root
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mesial developmental depression on the root that contributes to the tooth strength
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#6 and #11 - MESIAL - cusp tip and bisecting line
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A line bisecting the tooth passes lingual to the cusp tip/ cusp tip facial to center (this opposite on mandib canine)
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None
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#6 and #11 - MESIAL - root outline straightness
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labial root outline is straighter than the lingual and more nearly parallel to a bisector
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#6 and #11 - MESIAL - root apex
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has a facial tilt
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#6 and #11 - DISTAL - where two concavities
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a concavity both above and below the distal contact
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#6 and #11 - DISTAL - developmental root depression
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developmental root depression is deeper than the mesial. (General rule
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#6 and #11 - INCISAL - mesial outline shape
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smooth semicircle
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#6 and #11 - INCISAL - distal outline shape
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has a hump
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#6 and #11 - INCISAL -compare mesial side to distal side
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mesial ½ of the crown is broader F/L; the distal ½ is wider M/D
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#6 and #11 - INCISAL - line from mesial contact to distal contact
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is a straight line through cusp tip
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None
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#6 and #11 - INCISAL - cingulum location
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centered
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#6 and #11 - INCISAL - will see more lingual or facial surface
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lingual (opposite of mandib canine)
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None
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#6 and #11 - INCISAL - Root cross section shape
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eliptical
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#22 and #27 MANDIBULAR CANINE - SUPERLATIVES - crown, tooth and root length. Root incline. Anterior tooth most likely to have what?
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1)Longest crown (root shorter than max canine), 2) second longest tooth to max canine, 3) ONLY tooth with root mesially inclined, 4) anterior tooth that MOST LIKELY to have root bifurcation
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#22 and #27 MANDIBULAR CANINE - bigger ___ than ___
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F/L than M/D (same as max)
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#22 and #27 MANDIBULAR CANINE - how many lobes. How compared to max?
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4 lobes; middle facial and lingual lobe are well developed, but not as much as the maxillary canine
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#22 and #27 MANDIBULAR CANINE - Root apex has tendency to tilt to the ?
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facial, which violates the general rule
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#22 and #27 - FACIAL - Differences to MAX - 1)mesial outline . 2)apex 3)mesial and distal contacts. 4)Cusp slope length
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1) From mesial height of contour to the root tip, the mesial outline is straight. 2) Root tapers to form a sharper apex then the maxillary canine. 3) The mesial and distal contacts are located more incisally. 4)Cusp slopes are shorter, because overall M/D length is shorter
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#22 and #27 - FACIAL - Similarity to MAX - 1)Mesial Slope. 2)Cusp tip location. 3)Depressions.
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1) Mesial slope is shorter than distal. 2) Cusp tip is centered over the root, but not on the crown. (it is mesial). 3) Slight depression on each side of the mid-facial lobe
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#22 and #27 LINGUAL - Compared to MAX
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Same features but flow together to make smother surface
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#22 and #27 LINGUAL - Compared to MAX - Lingual taper
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sharper lingual taper than max
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#22 and #27 MESIAL - There is a _____ from cingulum to cusp tip
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concavity
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#22 and #27 MESIAL - From the cusp tip to the apex, the facial outline is
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one smooth arch
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#22 and #27 MESIAL - cusp tip thickness and sharpness
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thinner and sharper than max
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#22 and #27 MESIAL - The CEJ
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has more curvature than the maxillary canine
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#22 and #27 MESIAL - developmental depression on the root is? WRT maxillary
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deeper than on the maxillary and may lead to the bifurcation of the root
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None
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#22 and #27 MESIAL - cusp tip wrt bisector
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The cusp tip lies lingual to a bisector (opposite that of maxillary canine).
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#22 and #27 MESIAL - cingulum development
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poorly developed
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#22 and #27 DISTAL - F/L thickness
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appears thicker F/L, because the crown is twisted on the root
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None
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#22 and #27 DISTAL - CEJ
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shorter than mesial
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None
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#22 and #27 DISTAL - Developmental depression
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may not be as deep as the mesial, contrary to the general rule.
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None
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#22 and #27 INCISAL - The cusp tip location
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mesial and lingual to the center of the crown - therefore more facial surface is visible (opposite of the maxillary canine).
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None
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#22 and #27 INCISAL - incisal ridge shape
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This forms 2 arches on the incisal ridge, giving it a “gull wing” shape. A straight line can’t be drawn through the incisal ridge.
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None
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#22 and #27 INCISAL - cingulum
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centered
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