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97 Cards in this Set
- Front
- Back
Black triangle |
open gingival embrasure |
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Diastema |
space or gap b/w the teeth. |
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All anterior teeth develop from ___ lobes |
4 lobes- 3 facial and 1 lingual |
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When do the maxillary centrals and laterals erupt? |
Centrals: 7-8 years Laterals: 8-9 years |
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Lobes of anterior teeth are separated by ___ |
developmental depressions |
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The lingual lobe of an anterior tooth is also known as the |
cingulum |
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How many cingula are there in the permanent dentition? |
12 |
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Describe the cingula of the maxillary central incisor and maxillary lateral incisor |
max central incisor- off center to distal max lateral incisor- centered |
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Describe the mesial incisal and distal incisial angles of teeth 8/9. |
These are the maxillary central incisors. THE MI is sharp, right. The DI is slightly round. |
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Describe the MI and DI angles of teeth 7/10. |
MI- slightly rounded DI- distinctly rounded |
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Describe the mesial and distal outlines of teeth 8-10. |
8/9- mesial is straight, distal is curved 7/10- mesial is curved, distal is even more curved |
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Describe the mesial and distal contacts of 8/9. |
Mesial- incisal third Distal- incisal third near junction of middle third |
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Describe the mesial and distal contacts of 7/10 |
Mesial- junction of incisal and middle third Distal- middle third |
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T/F. The contact points of all anterior teeth are centered facio-lingually. |
True |
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What are the shapes of the central and lateral incisors looking from the facial? |
Trapezoid |
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What are the shapes of the central and lateral incisors looking from the mesial, distal, or incisal? |
Triangle |
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Describe the crown lengths of the lateral and central incisors |
Crown lengths of lateral incisors should be about 1-2 mm shorter. |
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For all anterior teeth where are the facial and lingual heights of contour? |
Cervical third |
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This tooth has the widest MD dimension of all anterior teeth. |
Maxillary central |
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What is special about the maxillary incisors and mandibular molars? |
Only teeth to be wider MD than FL. |
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This tooth has the smallest MD dimension of any maxillary tooth. |
lateral incisor |
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This tooth has greater variation than any other tooth in the mouth and can be peg shaped. |
Lateral incisor |
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Which tooth has a linguogingival groove and possibly a pit? |
Maxillary lateral incisor |
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This tooth is the most often permanent anterior tooth to be congenitally missing |
Maxillary lateral |
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Maxillary centrals and laterals have one root w/ one canal. How can you tell them apart? |
Central- conical w/ blunt apex Lateral- conical w/ apical curvature toward distal |
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What are the numbers of the permanent mandibular centrals and laterals? |
23, 24, 25, 26 |
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When do the mandibular centrals and laterals erupt? |
Centrals- 6-7 years, laterals- 7-8 years |
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Rank in order of when they come in: maxillary/mandibular centrals/laterals |
Mandibular centrals 6-7 years Mandibular laterals/maxillary centrals 7-8 years Maxillary laterals 8-9 years |
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The first succedaneous tooth to erupt is the |
mandibular central incisor |
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Describe the cingulum of mandibular central and lateral incisors |
Mandibular central- centered Mandibular lateral incisor- off center to distal |
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Describe the incisal angles of the mandibular centrals and laterals. |
24/25- MI: sharp, right; DI: sharp, right 23/26- MI: sharp; DI: more round than MI |
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Describe the mesial and distal outlines and incisal edge of the mandibular incisors |
All straight (inciscal edge of 23/26 has a DL twist) |
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Describe the proximal contacts of the mandibular incisors |
All incisal third |
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T/F. On tooth 23/26, the distal contact is slightly more apical. |
True |
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T/F. The views of the mandibular incisors are the same as those of the maxillary. |
True. Except some say the view from incisal is 4-sided/diamond instead of triangle |
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This is the smallest and least variable tooth in the mouth. |
Mandibular central incisor |
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Distinguishing b/w mandibular incisors: 1) Larger overall 2) Not as symmetrical 3) MMR slightly longer than DMR 4) Root slightly longer |
1) lateral 2) lateral 3) lateral 4) lateral |
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The lateral incisor crown tips slightly to ___ relative root. |
Distal |
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T/F. Mandibular incisors have distinct cingula. |
False. Very smooth- no distinct grooves or pits |
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Maxillary central occludes with Maxillary lateral occludes with |
the mandibular central and lateral the mandibular lateral and canine |
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Mandibular lateral occludes with |
the maxillary central and lateral |
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Only tooth to occlude with one other tooth |
Mandibular central occluding w/ maxillary central |
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Central and lateral mandibular roots- which has an apex that can curve to the distal? |
Central |
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T/F. Both mandibular central and lateral incisors can have proximal root concavities/depressions usually more pronounced on distal. Also both are narrower MD and wider FL. |
True. |
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What are the numbers of the permanent canines? |
6, 11, 22, 27 |
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Is the labial ridge of canines more pronounced on maxillary or mandibular? Shallow ___ lie mesial and distal. |
Maxillary; developmental depressions |
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A ___ is any linear elevation on the surface of a tooth. |
Ridge |
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Describe what canines look like from lingual view. |
Two fossas on each side of lingual ridge, a cingulum, and two marginal ridges (all features are more pronounced on maxillary) |
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When do canines erupt? |
Mandibular - 9-10 years (b4 mandibular premol) Maxillary - 11-12 years (after max premolars) |
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This tooth has the largest cingulum of all anterior teeth. |
Maxillary canine |
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How can you tell the difference between the maxillary and mandibular canine cingulum? |
Maxillary- centered Mandibular- possibly off center to distal |
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T/F. For the canines, the MD dimension is greater than the FL dimension. |
False |
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What is the smallest dimension of the canines? |
MD |
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Which is longer on canines: mesial or distal cusp ridge? |
Distal cusp ridge |
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Describe the mesial outlines of canines. |
Maxillary (6,11) - straighter than distal Mandibular (22, 27) - straighter than maxillary. Crown and root form a straight line |
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Describe the distal outlines of canines |
Maxillary (6,11) - distal bulge with lots of crown extending beyond root Mandibular (22, 27) - some distal bulge |
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What is the difference between the cusp tip location of maxillary and mandibular canines? |
Maxillary- facial to or in root axis line Mandibular- lingual to or in root axis line |
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Describe the proximal contacts of the canines. |
Maxillary- Mesial: Junction of incisal and middle third Mandibular- Mesial: incisal third Distal for both: middle third |
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What shapes are the canines looking at them from the incisal? |
Diamond From facial- trap/pentagon From mesial- triangle |
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What are the least often extracted teeth? |
Canines |
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This tooth has the longest root of all teeth and is the longest overall tooth. |
Maxillary canine |
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Canine eminence |
Formed from the bulge of root of maxillary canine. |
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T/F. The maxillary canine has the longest crown of any tooth. |
FALSE. The mandibular canine has the longest crown. |
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Which is more resistant to decay: mandibular or maxillary canine? |
Mandibular because it is smoother |
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When viewed from facial, the ___ canine has a straighter mesial outline and is narrower MD than other canine. |
mandibular |
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Describe the roots of the canines. |
Both maxillary and mandibular have one root. maxillary def has one canal and apical 1/3 is curved distal. Mandibular - one root might bifurcate into labial and lingual parts near apical 1/3 |
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The mandibular canine occludes with The maxillary canine occludes with |
the maxillary lateral and maxillary canine the mandibular canine and mandibular first pre molar |
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Describe an ideal Class I canine occlusion. |
Cusp tip of maxillary canine falls in facial embrasure between mandibular canine and 1st premolar (70% population) |
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What is the difference between overbite and overjet? What is normal? |
Overbite- vertical distance Overjet- horizontal distance Normal overbite is when maxillary incisal edge fall within 1/3 of mandibular incisors. Normal overjet is 1-2 mm. |
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What is canine guidance? |
Occlusal relationship in which canines produce disclusion of all posterior teeth when mandible moves side to side. |
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What are the numbers of the permanent maxillary premolars? |
4, 5, 12, 13 |
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A ___ is a ridge that projects from cusp tip to a central groove and is only found on posterior teeth. |
triangular ridge |
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A ___ ridge is formed by the union of two triangular ridges. |
transverse |
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T/F. Marginal ridges are found only on posterior teeth. |
False |
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Where are triangular fossae? |
Mesial or distal to marginal ridges on posterior teeth. |
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A ___ is a shallow groove or line b/w the primary parts of a crown, whereas a ___ does not mark the junction of primary parts. |
Developmental groove; supplemental groove |
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A buccal ridge is found on what type of teeth? |
Pre molars. More pronounced on first |
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When do the maxillary premolars erupt? |
First: 10-11 years Second: 10-12 years |
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Pre molars develop from ___ lobes. Pre molars contain ___ cingulum. |
4; 3 buccal one lingual 0 |
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On the maxillary premolars, which is more apical (cervical): DDR or MMR? |
DDR |
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T/F. The buccal and lingual cusps of the maxillary premolars are within the confines of the root and the occlusal table is centered over the root. |
True |
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What are the proximal contacts of the maxillary premolars? |
Mesial - middle third (near junction) Distal - middle third |
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What do maxillary premolars look like from: a) facial/lingual b) mesial/distal c) occlusal |
a) trapezoid b) trapezoid c) first- hexagonal second- oval |
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How can you tell the maxillary premolars apart from the occlusal? |
First is hexagonal, second is oval |
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This posterior tooth has the longest posterior crown occluso-cervically |
Maxillary 1st premolar |
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Which tooth is the only posterior tooth where the mesial buccal cusp ridge is longer than the distal buccal cusp ridge? |
Maxillary 1st premolar |
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What is the key feature for distinguishing tooth 5 from 12? |
5 and 12 are the maxillary first premolars. It is the mesial marginal groove, which crosses the mesial marginal ridge and extends onto the occlusal surface. |
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T/F. About maxillary first premolar. 1. Has a long central groove. 2. Lingual cusp is shorter than buccal cusp. |
1. True 2. True. |
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on the first and second maxillary premolars, when viewed from the lingual the lingual cusp is ____ inclined. |
mesially |
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Are maxillary premolars wider BL or MD? Are they wider OC or MD? |
BL OC MD is the smallest dimension. |
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Choose 1st or 2nd maxillary premolar: 1) Smaller crown 2) More ovoid 3) Buccal and lingal cusps not equal 4) Shorter central groove and wider marg ridges 5) Multiple supplemental grooves 6) Mesial developmental depression |
1) 2nd 2) 2nd 3) 1st 4) 2nd 5) 2nd 6) 1st |
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Which tooth difficult to adapt to with a matrix band and why? |
Maxillary 1st premolar. Has a pronounced mesial concavity called mesial developmental depression. |
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This is the most often extracted tooth for orthodontic reasons |
Maxillary first premolar |
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How do the roots between the maxillary first and second premolar differ? |
First- 2 roots (one buccal, one lingual). It is also the only premolar w/ 2 roots Second- one root, can have two canals |
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Maxillary premolars have depressions on their roots. Which is more prominent on which? |
1st PM: mesial 2nd PM: distal |
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Torus |
Bony outgrowth or exostosis |
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Periodontium |
Supporting structures of a tooth- both hard and soft |