Set 1.0 (Oral anatomy and physiology) Flashcards
Nonsuccedaneous teeth include all of the following EXCEPT one. Which one is the EXCEPTION?
a. The permanent maxillary and mandibular premolars
b. The permanent maxillary and mandibular first molars
c. The permanent maxillary and mandibular second molars
d. The permanent maxillary and mandibular third molars
a. The permanent maxillary and mandibular premolars
There is no premolars in primary dentition.
Using the Universal Numbering System, which of the following represents the four permanent adult canines?
a. 13, 23, 33, 43
b. 6, 11, 22, 27
c. C, H, R, M
d. 6, 12, 22, 27
e. 53, 63, 73, 83
b. 6, 11, 22, 27
Universal
- from 1 to 32 (permanent)
- from A to T (primary)
FDI
- two digit number
Humans are classified as having which types of dentition?
a. Homodont, diphyodont
b. Heterodont, polyphodont
c. Heterodont, diphyodont
d. Homodont, monophyodont
e. Homodont, polyphodont
c. Heterodont, diphyodont
Heterodont - multiple types of teeth
Dihyphodont - two set of teeth
The attachment apparatus is composed of all of the following EXCEPT one. Which one is the EXCEPTION?
a. Periodontal ligament
b. Cementum
c. Alveolar process of the maxilla and mandible
d. Gingiva
d. Gingiva
All anterior teeth develop from how many lobes?
a. 2
b. 3
c. 4
d. 5
e. 6
c. 4
4 lobes
- 3 labial (Mesiolabial, labial and distolabial)
- 1 lingual
A labial ridge can be found on which tooth type?
a. Incisor
b. Canine
c. Premolar
d. Molar
A 16-year-old patient is referred to the orthodontist’s office needing work to fix her malocclusion. Before the patient’s first appointment, the orthodontist reviews the clinical photographs of the patient and notices mamelons. Mamelons are unusual in older patients and would indicate that the patient most likely has which of the following malocclusions?
a. Posterior crossbite
b. Posterior open bite
c. Anterior open bite
d. Edge-to-edge class III dental occlusion
c. Anterior open bite
When viewed from the facial, all posterior teeth have proximal contacts in the occlusal third. Each posterior tooth has the mesial contact slightly more cervically located than the distal contact.
a. Both statements are true.
b. Both statements are false.
c. The first statement is true, the second is false.
d. The first statement is false, the second is true.
b. Both statements are false.
Maxillary Contact Areas
IJ, JM, MM, MM, MM, MM, MM
Mandibular Contact Areas
II, II, IM, MM, MM, MM, MM
- Mesial is higher than distal
When viewed from the occlusal, the proximal contact between mandibular 1st and 2nd molars is located
a. Slightly lingual to the middle 3rd
b. In the middle 3rd
c. Slightly buccal to the middle 3rd
d. In the cervical 3rd
c. Slightly buccal to the middle 3rd
The height of contour occlusocervically is located within the middle third of the
a. Lingual surface of a permanent mandibular first molar
b. Facial surface of a permanent maxillary first molar
c. Distal surface of a permanent central incisor
d. Mesial surface of a permanent canine
a. Lingual surface of a permanent mandibular first molar
In which age range would one normally expect to see all 20 primary teeth present, but no permanent teeth yet visible?
a. 0.5-1 year
b. 1-1.5 years
c. 1-2 years
d. 2.5-5.5 years
e. 3.5-6.5 years
d. 2.5-5.5 years
Max 1st Molar - 6 yr old teeth
Ordinarily, a 7-year old child would have what teeth clinically visible in the mouth?
a. All 20 primary teeth and 4 permanent 1st molars
b. 18 primary teeth and 2 permanent teeth
c. 16 primary teeth and 8 permanent teeth
d. 12 primary teeth and 12 permanent teeth
c. 16 primary teeth and 8 permanent teeth
Central Incisors and 1st Molar
Permanent canine cusps have mesial cusp ridges shorter than the distal cusp ridges. Their crowns are wider faciolingually than mesiodistally.
a. Both statements are true.
b. Both statements are false.
c. The first statement is true; the second is false.
d. The first statement is false; the second is true.
a. Both statements are true.
All of the following statements are true EXCEPT one. Which one is the EXCEPTION?
a. When viewed from the occlusal, mandibular molars appear rectangular; maxillary molars appear rhomboidal.
b. Mandibular molars are wider mesiodistally than faciolingually; this is the opposite of maxillary molars, which are wider faciolingually.
c. Mandibular molars have two nearly equalsized lingual cusps; maxillary molars have one large and one small lingual cusp.
d. Mandibular molars have an oblique ridge; maxillary molars have a transverse ridge, which extends from the mesiolingual to the distobuccal cusps.
d. Mandibular molars have an oblique ridge; maxillary molars have a transverse ridge, which extends from the mesiolingual to the distobuccal cusps.
Maxillary - Oblique Ridge
The incisal edge (cusp tip) is positioned more to the lingual of the root axis line in which of the following teeth?
a. Maxillary incisors
b. Mandibular incisors
c. Maxillary canine
d. Mandibular canine
e. B and D
e. B and D
Aside from the mandibular lateral incisor, a distolingual twist of the incisal edge can be found on which of the following teeth?
a. Mandibular central incisor
b. Maxillary lateral incisor
c. Maxillary canine
d. Mandibular canine
d. Mandibular canine
Which posterior tooth is most symmetrical from an occlusal view?
a. Maxillary 1st premolar
b. Maxillary 2nd premolar
c. Maxillary 1st molar
d. Mandibular 1st premolar
e. Mandibular 1st molar
b. Maxillary 2nd premolar
The mandibular canine has a more prominent cingulum than does the maxillary canine. The mandibular canine has a straighter mesial border than the maxillary canine.
a. Both statements are true.
b. Both statements are false.
c. The first statement is true; the second is false.
d. The first statement is false; the second is true.
d. The first statement is false; the second is true.
Maxillary canine has most prominent cingulum
Prostho: Cingulum rest is usually on maxillary canine
Which tooth is most likely to have two canals in a single root?
a. Mandibular lateral incisor
b. Mandibular canine
c. Mandibular 2nd premolar
d. Maxillary central incisor
e. Maxillary canine
a. Mandibular lateral incisor
In a maxillary 1st molar, a depression associated with a furcation might be detectable on all of the following surfaces EXCEPT
a. Buccal
b. Palatal
c. Mesial
d. Distal
b. Palatal
Which cusp on permanent maxillary molars generally gets progressively smaller from the 1st to the 3rd molar?
a. Mesiolingual
b. Distolingual
c. Mesiobuccal
d. Distobuccal
b. Distolingual
How many transverse ridge exist on a maxillary molar?
a. 0
b. 1
c. 2
d. 3
e. 4
b. 1
Which of the following has the highest frequency of impaction?
a. Maxillary lateral incisor
b. Maxillary canine
c. Maxillary 1st molar
d. Mandibular canine
e. Mandibular 2nd premolar
b. Maxillary canine
Man 3rd Molar > Max 3rd Molar > Max Canine > Max Lateral Incisor
Which tooth is most likely to have a cervical enamel projection?
a. Maxillary central incisor
b. Maxillary canine
c. Mandibular 1st premolar
d. Mandibular 2nd premolar
e. Mandibular 2nd molar
e. Mandibular 2nd molar
A maxillary molar has_ fossae; and the mandibular molar has _fossae on the occlusal surface.
a. 3; 3
b. 3; 4
c. 4; 3
d. 4; 4
c. 4; 3
Max Molar
- Distal Triangular Fossa
- Mesial Triangular Fossa
- Central Fossa
- Oblique Ridge Fossa
Man Molar
- Distal Triangular Fossa
- Mesial Triangular Fossa
- Central Fossa
The second largest cusp on a mandibular 2nd molar is the
a. Mesiolingual
b. Distolingual
c. Mesiobuccal
d. Distobuccal
e. Distal
b. Distolingual
Which tooth has the greatest root-to-crown ratio?
a. Maxillary central incisor
b. Maxillary canine
c. Mandibular canine
d. Mandibular 1st molar
d. Mandibular 1st molar
How many roots are visible from the buccal aspect of a maxillary first molar?
a. One root
b. Two roots
c. Three roots
d. Four roots
c. Three roots
All of the following statements concerning the mandibular lateral incisor are true EXCEPT one. Which one is the EXCEPTION?
a. The mandibular lateral incisor is a little larger in all dimensions than the mandibular central incisor.
b. The crown of the mandibular lateral incisor is not as bilaterally symmetrical as the mandibular central incisor.
c. The cingulum is directly in the center of the lingual surface.
d. The single root is usually straight, slightly longer and wider than that of a mandibular central incisor.
c. The cingulum is directly in the center of the lingual surface.
A patient walks into your office holding three crowns in her hand and claims that they fell out during a car accident. You notice that one of the crowns has a mesiolingual developmental groove. This is a dead giveaway that this tooth is a:
a. Maxillary first premolar
b. Mandibular first premolar
c. Maxillary second premolar
d. Mandibular second premolar
b. Mandibular first premolar
Mesial MARGINAL Developmental Groove - Maxillary 1st Premolar
MesioLINGUAL Developmental Groove - Mandibular 1st Premolar
The maxillary lateral incisor is smaller than the maxillary central incisor in all aspects EXCEPT one. Which one is the EXCEPTION?
a. Crown length
b. Crown width mesiodistally
c. Crown width faciolingually
d. Root length
d. Root length
Which tooth has the most prominent lingual ridge with mesial and distal fossa?
a. Maxillary central incisor
b. Mandibular lateral incisor
c. Maxillary lateral incisor
d. Mandibular canine
e. Maxillary canine
e. Maxillary canine
At what age is a child expected to have 12 primary teeth and 12 permanent teeth?
a. 6 ½ years
b. 7 ½ years
c. 8 ½ years
d. 10 ½ years
e. 12 ½ years
c. 8 ½ years
All of the primary teeth have just completed root formation at what age?
a. 1-1 ½ years
b. 1 ½-2 years
c. 2-3 years
d. 3-4 years
e. 4-5 years
d. 3-4 years
Of the choices listed below, which one describes the boundaries that define the attached gingiva?
a. From the gingival margin to the interdental groove
b. From the free gingival groove to the gingival margin
c. From the mucogingival junction to the free gingival groove
d. From the epithelial attachment to the cementoenamel junction
c. From the mucogingival junction to the free gingival groove
Free Gingiva -free gingival groove to the gingival margin
Attached Gingiva - mucogingival junction to the free gingival groove
The arterial supply of the submandibular gland is from which branch of the external carotid artery?
a. Ascending pharyngeal
b. Superior thyroid
c. Maxillary
d. Facial
e. Descending pharyngeal
d. Facial
The glenoid fossa is a portion of which bone?
a. Zygomatic
b. Temporal
c. Maxilla
d. Mandible
e. Palatine
b. Temporal
The articulating surfaces of the entire temporomandibular joint are covered PRIMARILY by
a. Hyaline cartilage
b. Elastic cartilage
c. Vascular fibrous tissue
d. Fibrous or fibrocartilaginous tissue
d. Fibrous or fibrocartilaginous tissue
Which ligament helps retain the condyle within the glenoid fossa?
a. Sphenomandibular ligament
b. Temporomandibular ligament
c. Stylomandibular ligament
d. Pterygomandibular ligament
b. Temporomandibular ligament
Which of the following muscles form lateral boundaries of the isthmus of the fauces?
a. Palatoglossus and palatopharyngeus
b. Palatoglossus and tensor veli palatini
c. Palatoglossus and levator veli palatini
d. Palatopharyngeus and medial pterygoid
a. Palatoglossus and palatopharyngeus
Which muscle elevates and protrudes the lower lip?
a. Risorius
b. Mentalis
c. Buccinator
d. Levator anguli oris
b. Mentalis
Retrusion of the jaw results from:
a. The bilateral contraction of the anterior (vertical) fibers of the temporalis muscle
b. The bilateral contraction of the posterior (horizontal) fibers of the temporalis muscle
c. The unilateral contraction of the anterior (vertical) fibers of the temporalis muscle
d. The unilateral contraction of the posterior (horizontal) fibers of the temporalis muscle
b. The bilateral contraction of the posterior (horizontal) fibers of the temporalis muscle
A pediatric patient of yours complains of severe pain on chewing. On clinical exam, you see an eruption cyst in the place of the maxillary second premolar. What is the most likely age of this patient?
a. 8
b. 11
c. 13
d. 15
b. 11
8 y/o - incisors
11 y/o - premolars
13 y/o - 2nd Molars
In an ideal intercuspal position, the oblique ridge of the maxillary first molar opposes:
a. The distobuccal groove of the mandibular second molar
b. The buccal groove of the mandibular second molar
c. The mesiobuccal groove of the mandibular first molar
d. The distobuccal groove of the mandibular first molar
d. The distobuccal groove of the mandibular first molar
In an ideal occlusion, the mesiobuccal cusp of the permanent maxillary 2nd molar opposes which of the following?
a. The buccal groove of the mandibular 2nd molar
b. The distobuccal groove of the mandibular 1st molar
c. The mesiobuccal groove of the mandibular 2nd molar
d. The buccal embrasure between the mandibular 1st and 2nd molars
a. The buccal groove of the mandibular 2nd molar
The incisal edge or cusp tip of which tooth ideally lies in the facial embrasure between the mandibular canine and mandibular 1st premolar?
a. Maxillary lateral incisor
b. Maxillary canine
c. Maxillary 1st premolar
d. Maxillary 2nd premolar
b. Maxillary canine
The mandibular canine is most likely to occlude with the _.
a. Maxillary canine only
b. Maxillary canine and 1st premolar
c. Maxillary 1st premolar only
d. Maxillary lateral incisor only e. Maxillary lateral incisor and canine
e. Maxillary lateral incisor and canine
How many teeth contact both anterior and posterior segments of the opposing arch in ideal intercuspation?
a. 0
b. 2
c. 4
d. 6
e. 8
c. 4
In an Angle Class III malocclusion, the cusp tip of the maxillary canine is located
a. Distal to the buccal embrasure created by the mandibular canine and 1st premolar
b. Centered in the embrasure created by the mandibular canine and 1st premolar
c. Mesial to the buccal embrasure created by the mandibular canine and 1st premolar
d. None of the above
a. Distal to the buccal embrasure created by the mandibular canine and 1st premolar
In an ideal occlusion, the lingual cusp of the maxillary 2nd premolar contacts which of the following?
a. Mesial marginal ridge of the mandibular 2nd premolar
b. Distal triangular fossa of the mandibular 2nd premolar
c. Distal marginal ridge of the mandibular 2nd premolar
d. Mesial marginal ridge of the mandibular 1st molar e. Mesial triangular fossa of the mandibular 1st molar
b. Distal triangular fossa of the mandibular 2nd premolar
