16.____________________ Examine the drawing to the right. Imagine that you are looking down at the apex of this tooth root. What is the NUMBER NOTATION of this tooth?
18 December 1997
Biology of the Human Dentition at UIC
College of Dentistry
ORAL 312 / Your Name:____________________
Social Security Number_______________________
Code Number ______________________________
----------------------------------------------------------------
INSTRUCTIONS: Neatly write in your name, social security number, and the code number assigned to you during the lab ID exam. Write directly on this exam. There is no separate answer sheet. Select the best answer for multiple choice questions. Some questions require a written answer. Read carefully. Be sure to write neatly. There is a total of sixty questions worth one point each for a total of sixty points. You can earn two EXTRA points by neatly entering the information requested in the instructions above. At the end of the exam you will find the "bonus bump-up question". Be sure to answer it. If you are just one point below the next grade level, we will add in the extra point from this correctly answered bonus question to bump you up to the next grade level.
----------------------------------------------------------------
SAMPLE QUESTION
00. The first British researcher to study dental caries was
a. Retzius.
b. Carabelli.
c. Mummary.
d. Tomes.
e. Hertzig.
The correct answer is C. When you select the correct answer, neatly circle your answer as shown above. No answer or two answers will be considered as an error. We now begin with a question from the 1996 National Boards.
----------------------------------------------------------------
01. Which of the following represents the largest cusp of the mandibular first molar?
a. distal
b. mesiofacial (mesiobuccal)
c. mesiolingual
d. distofacial
e. distolingual
02. Our teeth are organized into distinctive classes of teeththat are regionally specialized. This condition is called
a. polydont.
b. polyphyodont
c. diphyodont.
d. heterodont.
e. polygynodont.
03. Which of the teeth listed below is the smallest?
a. #22
b. #23
c. #25
d. #7
e. #27
04. The correct eruption date for a permanent maxillary lateral incisor is
a. 2 1/2 years.
b. 6-7 years.
c. 10-12 years.
d. 9-10 years.
e. 8-9 years.
05. On permanent teeth, the greatest incisal curvature of a cervical line is on which surface of which incisor?
a. Mesial surface of the maxillary central incisor
b. Mesial surface of the mandibular lateral incisor
c. Distal surface of the maxillary lateral incisor
d. Mesial surface of the maxillary lateral incisor
e. Distal surface of the mandibular lateral incisor
06. Which of the teeth listed below is MOST LIKELY to contain the neonatal line?
a. #5
b. #11
c. #1
d. #3
e. #8
07. What is the name of the structure that descends from the cusp tip of the upper permanent canine down the lingual surface to the cingulum?
a. lingual marginal ridge
b. canine ridge
c. lingual ridge
d. articulating ridge
e. imbricating ridge
08. Which of the following represents the third pair of permanent teeth to erupt in normal sequence?
a. Maxillary lateral incisors
b. Mandibular lateral incisors
c. Maxillary canines
d. Mandibular central incisors
e. Mandibular canines
09. Abused children come from
a. all socio-economic, ethnic and cultural backgrounds.
b. mostly deprived families.
c. working class families.
d. upper class famillies.
e. families living in public housing projects.
10. This premolar is sometimes called a 'tricuspid':
a. #4
b. #5
c. #28
d. #29
e. #21
Hint: Identify each tooth carefully in questions such as question 10 before circling the answer of your choice.
DIRECTIONS: This section requires that you "fill in the blank".
11.____________________ What is the correct term that describes the human dentition which has two sets of teeth (deciduous & permanent)?
12.____________________ We use our teeth for some non-chewing purposes such as opening a package of crackers or nipping off a piece of thread when sewing a button. What is this type of functional use called?
13.____________________ What are those rounded protuberances seen on the incisal edges of freshly erupted upper central incisors?
14.____________________ When a buccal triangular ridge and a lingual triangular ridge join as seen on an upper premolar, what is that kind of ridge called?
15.____________________ Which of the four classes of permanent teeth is NOT succedaneous?
|
16.____________________ Examine the drawing to the right. Imagine that you are looking down at the apex of this tooth root. What is the NUMBER NOTATION of this tooth? |
|
17.____________________ What are the only teeth in the permanent dentition which replace primary teeth of a different class?
18.____________________ Write in the correct term for the CLINICAL ABSENCE OF TEETH in a patient you are examining who had all of his teeth extracted some years ago.
19.____________________ The most common of all supernumerary cusps appears on maxillary second deciduous molars and maxillary first permanent molars. Hint: sometimes it is absent or is just a pit. What is the name of this supernumerary cusp? It is located on the mesiolingual cusp.
20.____________________ In what dental tissue do you find the perikymata?
21.____________________ Name the cell that forms dentin.
22. I--- C--- M--- = Write in the correct dental formula for the deciduous teeth.
Hint: seven entries are necessary. All must be correct.
DIRECTIONS: This and the next page are multiple choice.
23. Each of the following morphologic structures can be seen on any incisor EXCEPT one. Which one is the EXCEPTION?
a. cingulum
b. mesial marginal ridge
c. lingual fossa
d. transverse ridge
e. distal marginal ridge
24. Primate spaces occur between what teeth?
a. between canines and premolars in the permanent dentition.
b. between the upper lateral incisor & canine and between the lower canine & first molar in the deciduous dentition.
c. Between premolars and molars in the permanent dentition.
d. between the upper canine & first molar and between the lower lateral incisor & canine in the deciduous dentition.
e. between incisors and canines in the great apes.
25. Think about this one carefully. How many ridges are there on the occlusal surface of a maxillary first premolar?
Hint: identify every type of ridge, then add them up.
a. two
b. four
c. six
d. eight
e. ten
26. How long are the deciduous lower central incisors functional in the mouth?
a. five years
b. seven years
c. nine years
27. Which deciduous tooth LEAST resembles its successor?
a. #T
b. #K
c. #I
d. #S
28. How many teeth would you expect to see in the oral cavity of a child aged 6 years?
a. 20 deciduous teeth, 4 permanent teeth
b. 18 deciduous teeth, 4 permanent teeth
c. 18 deciduous teeth, 6 permanent teeth
d. 16 deciduous teeth, 4 permanent teeth
e. 16 deciduous teeth, 6 permanent teeth
29. The occlusal surface of the primary mandibular second molar closely resembles the occlusal surface of which of the following mandibular teeth:
a. the second premolar
b. the primary first molar
c. the permanent second molar
d. the permanent first molar
e. the first premolar
30. Which one of the following terms means to have 'one set of teeth'?
a. uniphyodont
b. monophyodont
c. homodont
d. homophyodont
e. whatchamacallitophyodont
31. In viewing the crown of a canine from the incisal aspect, one normally sees each of the following structures EXCEPT one. Which one is this EXCEPTION?
a. cingulum
b. lingual fossa
c. cervical line
d. distal cusp ridge
e. mesiofacial developmental depresssion
|
32. Examine the drawing to the right. What is this condition? a. fusion b. gemination c. mesiodens d. Dens in dente e. dentogenesis 33. When there is a severe bend in the long axis of the tooth of a tooth, and that bend is located between the crown and root, this condition is called a. flexion. b. dilaceration. c. dens invaginatus d. taurodontism e. talon |
 |
34. Iatrogenic means
a. disease of an unknown cause.
b. a large pulp chamber in Neandertal teeth.
c. ectopic eruption
d. unerupted tooth.
e. a doctor caused disease.
35. Embrasures are the triangular spaces or areas between adjacent teeth where the approximating surfaces diverge from the contact area. Which of the following is NOT the correct location of an embrasure?
a. occlusal or incisal from the contact area
b. facial (buccal or labial) from the contact area
c. lingual from the contact area
d. cervical from the contact area
36. Which of the four premolars is the SMALLEST?
a. mandibular first premolar
b. mandibular second premolar
c. maxillary first premolar
d. maxillary second premolar
37. As compared with permanent teeth, the crowns of the primary teeth are
a. larger.
b. about the same size, but more bell-shaped cervically.
c. narrower mesiodistally in comparison with their crown length in the anterior teeth.
d. more bulbous and constricted.
38. Alternation is
a. the arrangement of teeth into classes.
b. the intercuspation of facial and lingual cusps.
c. when a lower tooth relates to an upper tooth of its same number and the one in front.
d. when a lower tooth relates to an upper tooth of its same number and the one in back.
e. the displacement of food into the embrasures.
39. Where would you look to find an imbrication line?
a. lingual of #25
b. buccal of #3
c. facial of #8
d. occlusal of #32
e. distal of #1
40. The first succedaneous tooth to erupt is the
a. maxillary central incisor.
b. primary mandibular central incisor.
c. permanent mandibular central incisor.
d. permanent mandibular first molar.
e. primary mandibular first molar.
41a. On an unworn, freshly erupted upper permanent canine, which cusp ridge is longer?
a. the mesial cusp ridge
b. the distal cusp ridge
41b. Which cusp ridge is longer on the freshly erupted upper deciduous canine?
a. the mesial cusp ridge
b. the distal cusp ridge
42. Which of the following teeth presents with a pentagonal 'home plate' occlusal shape?
a. #18
b. #20
c. #14
d. #30
e. #31
DIRECTIONS: The next seven questions are "fill in the blank".
43.____________________ What is the fundamental morphologic unit of enamel?
44.____________________ When you sectioned teeth in lab, you often saw that some of the dentin in older teeth was translucent or transparent. What is this type of dentin called?
45.____________________ What is the cell type that forms enamel?
|
46.____________________ Examine the diagram reproduced to the right. What class of malocclusion is pictured here? 47.____________________ Examine the diagram to the right. What type of supernumerary is this? 48.____________________ Look at the diagram to the right. What is this condition called when the pulp is abnormally long and the roots are short? 49. ___________________ Look at this diagram and identify the gingival depression below the contact. |
 |
----------------------------------------------------------------
DIRECTIONS: The remaining questions are multiple choice. Hang in there! You are almost done.
50. You are here for achievement, accomplishment, and success and no hardship in this course, dental school or the boards is going keep you from achieving your goals.
a. true!
51. In the comparison of the rhomboidal and heart-shaped crown outlines of maxillary molars, the crown portion that differs MOST in contour and size is the
a. mesiofacial
b. distofacial
c. mesiolingual
d. distolingual
e. mesial
|
52. The midroot cross-sectional diagram to the right illustrates the root of which maxillary molar when looking from the occlusal. a. left first b. right first c. left third c. right third |
 |
53. Butler's Field Theory can be used to explain which of the following?
a. polyphyodonty, the succession of many generations of teeth
b. the self cleansing of teeth by saliva and muscular activity
c. the protection of the gingival sulcus by tooth contours.
d. heterodonty, the specialization of teeth into classes.
e. anamolies, the malformation of teeth.
54. The Begg Hypothesis best correlates with
a. the contemporary increase in adult height and weight.
b. teeth are self cleansing by action of cheek musculature and saliva flow.
c. tooth convexities protect against gingival impaction of food.
d. jaw disuse during growth reduces growth potential.
e. proximal wear is normal for the human dentition.
55. The largest incisal/occlusal embrasure is located between which of the following teeth?
a. maxillary canine and first premolar
b. mandibular lateral incisor and canine
c. maxillary lateral incisor and canine
d. mandibular central and lateral incisors
e. maxillary central and lateral incisors
56. Sometimes a maxillary second molar presents with a "heart shaped" occlusal surface instead of a "trapezoidal' shape. What cusp is reduced in size to produce a heart-shape nstead of a trapezoidal shape?
a. the mesiolingual cusp is reduced
b. the distolingual cusp is reduced
c. the mesiobuccal cusp is reduced
d. the distobuccal cusp is reduced
57. The LEEWAY SPACE is based on the idea that
a. deciduous incisors are narrower mesiodistally than their permanent successors.
b. deciduous incisors are wider mesiodistally than their permanent successors.
c. deciduous molars are narrower mesiodistally than their premolar successors.
d. deciduous molars are wider mesiodistally than their premolar successors.
58. Which lower first permanent molar root has two canals?
a. the mesial root has two canals
b. the distal root has two canals
59. The mechanisms of tooth eruption are
a. caused by vascular pressure and blood vessel thrust.
b. caused by pulpal pressure and pulpal growth.
c. caused by traction of periodontal fibroblasts.
d. poorly understood; no theory alone accounts for all eruptive tooth movement.
60. From the facial view, the maxillary first molar has its lingual root apex in line with which of the following? (Hint: if you don't remember from boards, think it out. Picture the entire upper molar in a buccal view. Now, think of how you would visualize that lingual root seen through and between the 'plier handle' buccal roots.)
a. distofacial cusp tip
b. mesiofacial cusp tip
c. facial groove
d. distofacial line angle
----------------------------------------------------------------
You made it! Now, take a moment and look back over your exam. Did you put your name, social security number, and code number on the exam? Did you answer every question. It is to your advantage to guess. Be careful. My experience is that your first impression is your best impression. Erasures erase correct answers. Now, listen up! Next is the bonus 'bump up' extra credit question. The deal is this: If you are one point away from the next higher grade level, we will count the point from the extra credit question. If you are two or more points away, we don't count it. HOWEVER, you must get it correct for it to count.
----------------------------------------------------------------
HERE IS THE EXTRA CREDIT QUESTION:
001. Which one of the following features is unique to upper molar teeth?
a. mesiobuccal cusp
b. two roots
c. mesiomarginal ridge
d. oblique ridge
----------------------------------------------------------------
Please take a moment and answer our "exit poll' on the fairness of this exam and the relevance of this course. You will turn that in separate from the exam and it will be anonymous.
We have greatly enjoyed this opportunity to be a part of your lives and we wish you well in school, your career, and in life.
Happy Holidays! Dr. Luksha, Dr. Heiss, Dr. Kolar, Dr. Johnson