Final Review: Slides 21-40 Flashcards
20.Compare and Contrast Central and Lateral Maxillary Incisors
Q: Which features can you use to differentiate between central and lateral incisors?
A: Size (central>lateral), Angularity (central more angular> lateral), and root curvature.
CANNOT use presence of cingula or PRESENCE of lingual fossa. SHAPE of lingual fossa CAN be used so watch out for what words he uses.
- Mesial View- permanent mandibular lateral incisor (Looking for which one is correct)
Q: -The incisal ridge is lingual to the faciolingual bisector.
- The anatomical crown is longer on the facial side from incisal ridge to cervical line.
- The crest of the facial cervical ridge will be at a lower level incisally than the crest of the lingual cervical ridge.
- The height of contour of the crown beyond the root facially and lingually will be less than 0.5 mm on either surface.
- The cervical line curves incisally to a lower level on the distal surface than on the mesial, with the crest of that curvature in the middle of the tooth, faciolingually.
- The crown of the tooth is slighty “twisted” so a part of the distal marginal ridge can be seen beyond the lingual outline of the mesial marginal ridge.
A: All are correct except for bullet 3, because the crest of the facial cervical ridge will be at a HIGHER level incisally than the crest of the lingual cervical ridge.
- Distal View- Permanent Maxillary Canine (T/F)
Q: -The cusp tip is lined up with the cingulum.
- There is a pronounced convexity which is middle to the distal contact area.
- Cervical line has a distinct curvature, but not as significant as on mesial surface.
A. False: Cusp tip ins aligned with the root tip and the height of curvature of the cervical line.
False: There is a pronounced concavity which is CERVICAL to the distal contact area.
True
- Incisal View-Permanent Mandibular Canine
(multiple Answer)
Q: Just like the maxillary canine, the crown outline is _____ shaped. The faciolingual measurement is _____ than the mesiodistal dimension. The crown is ____ on the facial than the lingual. The crown is bulkier on the _____ than on the ____.
A: Diamond
greater
bulkier
mesial, distal
- Permanent Maxillary First Premolar
Q: The mesial proximal contact area is located just ____ to the facial segment of the ______ marginal ridge, and _____ to the _____ marginal developmental groove
A: cervical
mesial
facial
mesial
- Permanent Maxillary First Premolar- Occlusal View
Q: The facial cusp tip is _____ to the mesiodistal bisector and ____ the distance from the facial outline to the faciollingual bisector of the crown.
A: distal
1/3
- Permanent Maxillary Second Premolar- Occlusal (multiple answer)
Q:Which of the following apply to this tooth?
- It has irregularly shaped mesial and distal triangular fossa.
- The fossa are nearer the center of the tooth.
- The tooth is described as having a relatively long central groove and short marginal ridges.
A. The first two statements are correct, the last one should read “ The tooth is described as having a relatively short central groove and wide marginal ridges.
- Permanent Mandibular First Premolar- Mesial View
Q: The central groove is position on the ____ portion of the crown
A: Lingual
- Permanent Mandibular First Premolar- Occlusal View
Q: What is the greatest difference between triangular ridges on the mandibular first premolar?
A: The facial triangular ridge is much greater than the puny lingual triangular ridge.
- Permanent Mandibular Premolars Compare and Contrast
Q: How can you distinguish between the first and second mandibular premolars?
A: By overall crown size, external occlusal outline, occlusal table geometric shape differences, number of cusps, presence of lingual groove, presence of central pit, crown taper differences, and transverse ridge presence. NOT CENTRAL GROOVE PRESENCE
- Permanent Maxillary First Molars- facial aspect
Q: Tell me about the lingual root as seen by this view.
A: It is the longest of the three roots by 1.0mm. Its apex is in line with the FACIAL groove when seen from this view.
- Permanent Maxillary First Molars: Mesial Aspect
Q:Which correctly describes the mesiofacial root depression?
- Wide but shallow
- Long and deep
- Encompasses the cervical, middle, and apical thirds of the root
- Crosses the cervical line onto the crown of the tooth
A: The depression is wide, shallow, and encompasses the cervical, middle, and apical thirds of the root.
- Permanent Maxillary First Molars: Distal Aspect
Q: Where is the apex of the lingual root vertically positioned?
A: It is almost equidistant between the greatest lingual contour of the crown and distolingual cusp tip. NOT LINED UP WITH ANY CUSP TIP
- Permanent Maxillary First Molar: Occlusal
Q:What does each cusp possess, and what is the longest cuspal ridge?
A: Each cusp has well developed cuspal ridges that extend laterally (mesially and distally) from the tip of the respective cusp. The longest cuspal ridge is the DISTAL cusp ridge of the MESIOLINGUAL cusp (part of the oblique ridge).
The question will be T/F.
- Permanent Maxillary Second Molars: Occlusal
Q: What is the difference between the first and second maxillary molars?
A: The first molar has a distal pit, whereas the second molar does not have a separate distal pit from the distal triangular pit.
