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Arts and Humanities
Morphology Quizzes from 2021 (Midterm)
Terms in this set (59)
How many anterior teeth are there in one full quadrant of permanent teeth? A. 2 В. 3 С. 4 D. 5 E. 6
Oblique ridges are found only on the: A. buccal surfaces of mandibular molars. B. lingual surfaces of anterior teeth. C. proximal surfaces of premolars. D. occlusal surfaces of maxillary molars E. palatal surfaces of posterior teeth.
D. occlusal surfaces of maxillary molars
3. Of the following choices, a mamelon is most likely to be found on: A. tooth #25 of a 53 year old patient. B. tooth #8 in the cingulum area. C. tooth #29 in a 32 year old patient. D. tooth #10 in a 9 year old patient. E. tooth #18 on a proximal surface.
D. tooth #10 in a 9 year old patient.
Consider the following dental formula. How many total anterior teeth does this imaginary animal have? 1- 1/1: C 1/1:P 2/2: M 4/4 A. 1 В. 2 C 4 D. 8 E. 12
5. The first permanent tooth to erupt is normally: A. the mandibular central incisor. B. the maxillary central incisor. C. the mandibular lateral incisor. D. the maxillary lateral incisor. E of the above.
E none of the above.
The tooth crown surface which is toward the lips of the anterior teeth is correctly named the: A. labial suface B. lingual surface. C. incisal surface. D. mesial surface. E. distal surface.
A. labial suface
Upon examination of most patients' mouths, a dentist will find that the tendency to be lingually inclined, while the crowns of maxillary molars have a tendency to be bucally inclined The correct term describing the results of this phenomenon is: A. malocclusion. B. the Curve of Wilson C. the Curve of Spee. D. molar transangulation. E. the Sphere of Monson.
B. the Curve of Wilson
The terms "cemento-enamel junction" and "cervical line": A. refer to the same thing B. are distinctly different entities C. may or may not be the same according to the level of the gingival tissues. D. refer to the gingival crest. E. refer to the epithelial attachment
A. refer to the same thing
The connection of the soft tissue of the mouth with tooth, normally occurring in the cervical third of the crown of the tooth in young individuals, is correctly termed the: A. alveolar process. B. epithelial attachment. C. cortical attachment. D. Curve of Wilson. E. periodontal ligament.
B. epithelial attachment.
Which of the following permanent teeth are composed of five lobes? A. maxillary incisors B. mandibular canines C. maxillary premolars D. mandibular first molars E maxillary second molars
D. mandibular first molars
The mixed dentition period ends A. at about age 6 B. with the eruption of the permanent mandibular first molar C. with the exfoliation of the last deciduous tooth. D. with the eruption of the deciduous mandibular second mola. E. with the exfoliation of the deciduous mandibular central incisor.
C.) with the exfoliation of the last deciduous tooth.
Which of the following could correctly be termed a palatal surface? A Lingual surface of #15 B. Facial surface of #2 C. Lingual surface of #18 D. Labial surface of #8 E. Lingual surtace of # 26
A Lingual surface of #15
In the FDI numbering system, the permanent mandibular left first premolar is correctly identified by which of the following numbers? A 74 В. 38 C. 47 D. 21 E 34
When looking directly into a patient's mouth from the front, the second tooth from the midline to the left, in the stationary jaw member, is the A mandibular left canine B mandibular right lateral incisor C mandibular left central incisor. D maxilary right lateral incisor. E maxillary left canine.
D) maxilary right lateral incisor.
Which of the following structures is not considered to be a boundary of the lingual fossa of permanent incisors? A. incisal edge B. mesial marginal ridge C. cingulum D. distal marginal ridge E Linguogingival fissure
E Linguogingival fissure
The distal surface of tooth #9 has a contact area A. with the mesial surface of tooth #10 B. which is generally larger than the contact area on the mesial surface of the same tooth C. with the distal surface of tooth #8 D. which is circular in shape. E. which is located at a more incisal level than the contact area on the mesial surface of the same tooth
A) with the mesial surface of tooth #10
When the linguogingival groove is present, it is found on A. maxillary incisors only B. mandibular incisors only. C. central incisors only D lateral incisors only all incisors
A.) maxillary incisors only
Which of the following structures, when present, is found on the labial crown surface of permanent incisors? A. cingulum B. marginal ridges C. fossa D. imbrication lines E. mamelons
D. imbrication lines
The marginal ridges of incisors A. extend in a roughly horizontal plane B. extend in a plane which is roughly at right angles to the long axis of the tooth C. are found on the incisal edge D. extend in a plane which is roughly parallel to the long axes of the tooth E. are located on the mesial and distal surfaces
D. extend in a plane which is roughly parallel to the long axes of the tooth
10. A screwdriver crown form of certain permanent incisors, due to congenital syphilis, is commonly referred to as A. Hutchinson's incisors. B. peg laterals. C. supernumerary teeth. D gemination E concrescence
A) Hutchinson's incisors.
Completion of root formation for the permanent mandibular central incisor occurs A. at age 6-7. B. after root formation is completed for the mandibular lateral incisor. e at age 7-8. D. after root formation is compieted for the maxillary central incisor. E. at age 9.
E. at age 9.
The maxillary incisors differ from the mandibular incisors in relative dimensions. These differences are most evident in the maxillary incisors' much greater relative: A. mesiodistal crown dimension. B. labiolingual crown dimension. C. incisocervical crown dimension. D. root length. E. crown-root length.
A. mesiodistal crown dimension.
3. From the labial or lingual aspect, the distoincisal angle is the most rounded (least sharp) on the permanent: A. maxillary central incisor. B. maxillary lateral incisor. C. mandibular central incisor. D mandibular lateral incisor
D mandibular lateral incisor
When viewed from the incisal aspect, one permanent incisor exhibits an incisal edge which is noticeably wider mesiodistally than that of any other incisor. It is the: A. maxillary central. B. maxillary lateral, C. mandibular lateral. D. mandibular central.
A.) maxillary central.
The height of contour of the lingual crown surface of permanent mandibular incisors is located in the: A. incisal third. B. middle third. C. cervical third. D. occlusal third. E. apical third.
C.) cervical third.
When viewed from the lingual aspect, a certain incisor specimen has a deep fossa, prominent marginal ridges, and a lingual pit. It is most likely a A maxillary central. B maxillary lateral. C. mandibular central. D. mandibular lateral
B maxillary lateral.
Which of the following statements of general crown size of the permanent incisors is true? A. The mandibular lateral incisor is normally smaller than the mandibular central incisor. B. The maxillary lateral incisor is normally smaller than the mandibular central incisor. C. The maxillary central incisor is normally smaller than the maxillary lateral incisor. D. The mandibular central incisor is normally smaller than the mandibular lateral incisor. E. The maxillary central incisor is normally smaller than the mandibular lateral incisor.
D. The mandibular central incisor is normally smaller than the mandibular lateral incisor.
From the labial aspect, the mesioincisal and distoincisal angles have about the same degree of roundness as each other on: A.) mandibular central incisors only, B. maxillary lateral incisors only C. maxillary incisors only. D. lateral incisors only. E. all incisors.
A.) mandibular central incisors only,
From the incisal aspect, the incisor which exhibits the greatest symmetry is the A. maxillary central. B. maxillary lateral. C. mandibular central. D. mandibular lateral.
C) mandibular central.
The incisor with the following Palmer notation is also known as universal tooth: (LOWER LEFT CORNER)
The dental tissue which composes the majority of the tooth is the: A. cementum. B. pulp. C. enamel D. dentin. E. periodontal ligament
The anatomical root of the tooth is composed of which of the following hard dental tissues? A. dentin only B. enamel and dentin C. enamel and D. cementum and dentin E. enamel, cementum, and dentin
D. cementum and dentin
Which group of the following groups of permanent teeth is notisuccedaneous? A. incisors B. canines C. premolars D. molars E. None of the above since all permanent teeth are succedaneous.
When viewing the maxillary molar area from the facial aspect, the two embrasures which are clearly visible in this view are the: A. mesial and distal embrasures. B. buccal and lingual embrasures. C. labial and incisal embrasures. D. facial and palatal embrasures. E. occlusal and cervical embrasures.
E. occlusal and cervical embrasures.
Mamelons reveal evidence of the separation of the: A buccal lobes of postérior teéth. B. buccal and lingual lobes of molers. C lingual lobes of canines. D. labial and lingual lobes of anterior teeth, E. labial lobes of incisors.
E. labial lobes of incisors.
Roots of teeth are normally widest at the: A. cervical line. .B. middle of the apical third. C. mid root portion D. middle of the middle third E apex
A. cervical line.
The permanent anterior tooth which nomally erupts the latest age is the A. mandibular lateral incisor B. maxilary central incisor C. maxillary lateral incisor D. maxillary canine E. mandibular canine
D. maxilary canine
From the incisal aspect, the permanent maxillary canine has a crown which. A. is symmetrical in its mesial and distal portions B. is concave in its entire labial outine to the incisors C. shows a poorly developed middle labial lobe, when compared D. is asymmetrical, with the distal portion being bulkier than the mesial portion. E. is thicker labiolingualy, when compared to all other anterior teeth
E. is thicker labiolingualy, when compared to all other anterior teeth
The structure which is located immediately to the mesial of the lingual ridge of the permanent maxilary canine is the: A. cingulum. B. mesial marginal ridge C. distolingual fossa. D. distal marginal ridge E mesiolingual fossa
E mesiolingual fossa
The general crown form of the permanent canines, as viewed from the labial aspect, is A. triangular. B. homboidal. C pentagonal. D. hexagonal. E. diamond-shaped.
When compared to the permanent mandibular canine, the maxillary canine normally exhibits greater prominence A. the cingulum. B. the cusp. C. the marginal ridges. D. all of the above. E. none of the above.
D. all of the above
After attritional wear on the incisal of the permanent canines, the pattern is normally manifest in a A. distal displacement of the cusp tip of the mandibular canine B. lengthening of the mesioincisal slope of the mandibular canine. C. lengthening of the distoincisal slope of the maxillary canine. E. lengthening of the distoincisal slope of the mandibular canine D. mesial displacement.of the cusp tip of the maxillary canine.
E. lengthening of the distoincisal slope of the mandibular canine
The height of contour on the lingual surface of the crown of the permanent mandibular canine is located in the A. same third as that tooth's labial surface height of contour B. incisal third C. same third as that tooth's mesial surface height of contour D. middle third E. same third as that tooth's distal surface height of contour
A. same third as that tooth's labial surface height of contour
Of the following permanent anterior teeth, which normally has the greatest crown-root length? A mandibular lateral incisor B. maxillary canine C. maxillary lateral incisor D. mandibular central incisor E. maxillary central incisor
B. maxillary canine
The proximal crown surface of the permanent canine which normally exhibits a concavity in its cervical half is the A. distal surface of the mandibular canine B mesial surface of the maxillary canine C distal surface of the maxillary canine D. mesial surface of the mandibular canine.
distal surface of the maxillary canine C
The distoincisal slope of the permanent canines may also be described as: A. the distal cusp ridge B. the distal outline of the labial surface. C. the distal mamelon. D. the distolingual developmental depression E the distolabial developmental depression
A. the distal cusp ridge
The permanent mandibular canine normally exhibits: A. a lingual ridge. B. a linguogingival groove. C. a lingual pit. D. a linguogingival fissure. E. lingual developmental depressions.
A. a lingual ridge.
Of the following choices, the crown surface of the permanent canine which is widest mesiodistally is the A. lingual surface of the maxillary canine B. labial surface of the maxillary canine. C. lingual surface of the mandibular canine. D. labial surface of the mandibular canine.
B. labial surface of the maxillary canine.
The permanent mandibular canine normally exhibits an incisal edge which has: A. a cusp tip which is offset to the distal. E a straight outline, with no mesio and distoincisal slopes. D. mesio and distoincisal slopes of the same length. C longer distoincisal slope than mesioincisal slope. B. longer mesioincisal slope than distoincisal slope.
longer distoincisal slope than mesioincisal slope. C
The permanent anterior tooth in which the labial crown surface normally is the largest in general size (area) is the: A. maxillary lateral. B. maxillary central C. maxillary canine. D. mandibular canine. E. mandibular lateral.
B. maxillary central
The sixth tooth from the midline in the mixed period of dentition is the: A. deciduous second molar. B. permanent second premolar C. permanent second molar D. six year molar E. deciduous first molar.
D. six year molar
Which of the following structures is always visible when viewing an erupted tooth in the mouth? A. Enamel В. СЕЈ C. Cementum D. DEJ E. Dentin
The cervical base (or floor) of the triangular-shaped interproximal space is: A. tooth structure. B. gingival tissue C. the tongue. D. the alveolar process. E the marginal ridge.
D. the alveolar process.
Maxillary canines exhibit: E. a total of five lobes. D. two labial and two lingual lobes. C. the same number of lobes as maxillary premolars B. a total of three lobes A. the same number of lobes as mandibular first molars.
C the same number of lobes as maxillary premolars
When compared to maxillary incisors, the mandibular incisors exhibit B. more prominent cingula A. less prominent marginal ridges. C. deeper lingual fossae D. all of the above. E. none the above.
A. less prominent marginal ridges.
The root of the mandibular central incisor is normally B. wider mesiodistally than labiolingually. A. longer than the root of the mandibular lateral C. wider than the root of the mandibular lateral. D lacking in longitudinal grooves E wider mesiodistally at the labial than at the lingual
E wider mesiodistally at the labial than at the lingual
The structure which is located on crown surface of the permanent maxillary canine immediately mesial to the labial ridge in the incisal portion of the labial A. imbrication line. B. mesial outline of the labial surface C. distolabial developmental depressjon. D. distal outline of the labial surface. E. mesiolabial developmental depression.
E.) mesiolabial developmental depression.
When a permanent maxillary canine is present in the palatal bone, but fails to erupt, the condition is known as: A. agenesis. B. supraeruption. C. bifurcation D. congenitally missing. E. impaction
A root canal, or branch, which is similar to a normal root canal, but is in excess of the normal number of canals, is known as: A. an anastomosis. B. a pulp prolongation. C. an accessory canal. D. a supplementary canal E. a lateral canal
D. a supplementary canal
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