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Jordan University of science and technology
Faculty of Dentistry
2009
Midterm
Questions( Oral Pathology, Research, Conservative, Dental
Material, Prosthodontics and Epidemiology)
Written by: Batch of 2009
Collected by : Majd Hidmi
Designed by: Sanaa Qasem
Price :
0.40 JD
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Midterm Exams Questions: 2009
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ORAL PATHOLOGY 1
Q1 : the abnoramality which Radicular Cyst is accociated with is :A. dilaceration
B. taurodontism
C. dense invaginatus
D. concrescence
ans >> C.
Q2 : pulp obturation are associated with:ans : dentinogenesis imperfecta and dentin dysplasia type 2
Q3 : Neoplastic transformation is more likely to be seen in association with:a- Odontogenic keratocyst
b- Glandular odontogenic cyst
c- Dentigerous cyst
d- Radicular cyste- Lateral periodontal cyst
Ans: c
Q4 : lymphangioma macroglossia is a :Ans : secondary (tumors)
Q5 : tappered tooth structure is inAns :amelogenesis imperfecta hypoplastic smooth patteren
Q6 : what the diseas that becuses keratin k4 o k13 ?ans : white sponge nevus .
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Q7 : Which tooth is affected in cellulitis ?A- first molar
B- first premolarC- 2nd premolar
D- canine
answear is A
Research Methods
(written by : Ali Wattad)
Q1 : if the probability that the association could have occured by chanceis 0.02?
answer: null hypothesis is rejected and alternative hypothesis is
accepted.
Q2 : an intervention works in research setting?answer: efficacy .
Q3 : not included in the criterion of the research?a> chose a question that it answer is not frustrated.
B> a research that is puplished quickly.
C> a question that has an impact on health.
d> prior experience(...)
answer : a or b (not sure)
Q4 : a process tending to produce results that depart systemically frm thetrue values is?
answer: bias.
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Q5 : applying the research results on a sample of patients being studied iscalled?
answer: internal validity.
Q6 : when the investigator and the subject know nothing about groupassignment, this is called?
answer: double blinded.
Q7 : In randomized studies, efficacy and effectiveness are the sametrue or false?
false.
Q8 : which is not true about randomized study:a>can eliminate confounding and bias.
B>more generalizability
C> slower to conduct.
D>cannot answer a broad range of questions.
answer is: B
Q9 dr.ashraf shawesh is doing a research about (oral tori !!) and he istaking patients wherever he can find them. this is called?
answer: grab sample.
Q10 : a researcher is doing a research about prevelance of caries ingovernmental schools, he invited only 200 student from private school,
this is called?
answer: selection bias.
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CONSERVATIVE 1
Q1 : the angle between the pulpal floor and the axial walll called ....Ans : pulpoaxial line angle
Q2 : removal of any remaining infected dentin is included in which stageor step ..... Ans : final tooth preparation stage
Q3 : the lathe cut amalgum need.... condensing .. and in need ...mercury>>>>> answer .. more , more
Q4 : which of the following factors that affect cavity preparation relatedto selection of restorative material >>
Ans : two of them are .. patients age ..thickness of enamel and dentin ..
Q5 : Increment applied of amalgam in the cavity by thickness of ... to doeffective condensation
A. 3.0 mm
B. 2.0
C. 1.0
D. 1.5
I put it >>> C.
Q6 : there is a question about high copper amalgam compared to theconventional amalgam which statement is wrong
Answer >>
High copper amalgam have inferior resistance to discoloration corrosion
,break down .creep compared to conventional amalgam
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Q7 : according to black's classification of cavities Class 1 cavity is :A. including occlusal pit and fissure of the posterior teeth
B. including palatal and buccal extension\or buccal and palatal pits C. ..D. .
the answer >> A and B
Q8 : MOD is Considered a class 2 cavity , MO is Considered a complexcavity
A. two statement are false
B. two statement are true
C. first statement is true , the second is falseD. first statement is false , the second is true
answer >> C.
Q9 : which is true about restorative material factors that affect toothpreparation :
A. the thickness of enamel and dentin
B. age of the patient
C. ability of isolating operating field
D. the extension of the caries
Answer is >> C and D
Q10 : which is true about primary resistance form of tooth preparation:A. the shape of the conventional preparation that resist displacement or
removal of the restoration from tipping or lifting forces
B. Keep the cavity as small as possible
C. Rounded well-defined internal line angle
D. depend on the restorative material
Answer >>> B. and C.
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Q11 : the correct position of the wedge in Class 1 cavity :A. placed in the wider embrasure
B. in the lingual embrasureC. in the buccal embrasure
D. Class 1 cavity does not need wedge
answer >> D.
Q12 : which one of these is not a hand cutting instrument :A. Gingival Marginal trimmer
B. Amalgam condenser
C. Spoon excavatorD.Enamel Hatchet
Answer >> B.
Q13 : Most popular matrix band:Ans : Type 1
Q14 : Best amalgan depth _____ and preffered depth ____ to avoidfractures
ans : 1.5 & 2
Q15 : Which is incorrect about amlgamAns : overmixed amalgam is dry & crumbly
Q16 : Removing carious dentine is part of:ans : Final preparations stage
Q17 : if the distance between two lesions is less than .5 they SHOULDNOT be joined T/F
False
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Q18 : which statement is true about Low speed hand piece :A. speed up to 100,000 rpm
B. rotation only clockwiseC. can used to remove enamel
D. used to finish the restoration
Answer >> D.
Dental Material 2
Q1 : Zinc phosphate consist of:
ans : zinc oxide +phosphoric acid
Q2 : The acid that control working time & setting time in GIC is :
ans : Tataric acid
Q3 : The activator in composite polymerization is:
ans : tertiary amine
Q4 :The initiator in composite polymerization is:
ans : benzoyl peroxide
Q5 : Increase filler --> decrease Coefficient of thermal expansion
Q6 : what do we add amalgam to prevent tarnish ??
ans : (palladium)
Q7 : Tarnish happened when amalgam contact with
A. sulfide
B. chloride
C.hydrogen
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D.water
E. two answers are correct
answer >> E.
Q8 : The bond agent between Risen matrix and fillers in composite is :
ans : saline coupling agent
Q9 : Which monomer doesn't found in resin matrix in composite
A.MMA
B. bis-GMA
C. UDMAD .polystyrene not sure about spelling "
ans : D
Q10 : in Hardening stage in GIC what happened :
ans : Alaminum salt bridges coss-linked polyacrylic acid chain ..
Q11 : when we increase itching time on dentin what will happened :
A. pulp death !!
B. tooth sensitivity
C. increase composite bonding to the tooth
D.collagen fiber collapse
Q12 : The acid which control\ affect the setting and working time in GIC :
A. phosphoric acid
B. acrylic acid
c. Tartaric acid
D. .....
answer >> C.
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Q13 : to decrease corrosion in amalgam we add
A.silver
B.copperC.tin
D.palladium
B. is the correct !!
Q14: which of the following is true regarding zinc oxide ogeynol using
cement
1) oil of orange is used as a solvent
2) Equal length base & catalyst>>
two of the above (this is the answer)
Q15 : cermet GIC have more abrasion resistance? (or something like that)
True.
Q16 : after applied bonding agent a Hybrid Layer will form and it's
A
b . ..
c . layer made up intermingling resin and itched enamel
D. layer made of intermingling resin and itched dentin
answer: D.
((backing to slide " bonding and adhesive" slide 20 .. " hardcopy"))
Q17 : all are true about pits and fissure sealants except?
A. release floride
B. brittle
C. good adhesion
D.good penetration into fissures
E. all are true
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answer>>> D
Q18 : what acid reacts with zinc oxide to make zinc phosphate?(something like that).
A.polyacrylic acid
b. tartaric acid
c.hydrofloric acid
d. phosphoric acid
e: all are true
answer>>> D ,
Q19 : the smear layer consist of all of these except :
a. bacteria
b. dentin debris
c. salivary components
D. primer solution
answer D.
Q20 : which is not correct about High strength bases ..
the answer was > have low elastic modulus !!
Q21 : ideally amalgam should do one of this:
a. expand to reduce micro leakage
b. a little dimensional change
c. shrink........
d. none is correct
Answer is B
Q22 : something about composers wich is wrong???
a. release less fluoride than GIC
b. high fracture toughness...
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c. no acid base reaction in it
d. ......
E. all are trueans >>> c
Q23 : what will affect good bonding
A. oil lubricant expelled from the hand piece
B. moist surface after itching and bonding
C. All answer are true
D. increasing bonding time ka2no
E . complete drying of enamel and dentineAnswer A , E
Q24 : what interferes with good bonding?
A. oil lubricant
B. moist surface of dentine
c. ......
d. .....
e. all are true
Answer : A
Q :25 when silver alloy react with mercury,the weakest phase will be :
Answer : gamma 2 phase.
Q:26: which is true about admixed amalgam compared to spherical
amalgam:
A. admixed amalgam has higher 1&24 hours strengthB. admixed amalgam shrink moreC. required to be condensed more than spherical(something like that)
answer >> c
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Q27 : Which is correct about surgical dressing :
A) flowable
B) bulkyC) smooth
D) contains Eugenol
the answer is C , (( slide : 24 dental cements ))
Q28 : What is the strongest phase in the amlagam setting :
(a) Gamma
(b) gamma 1
(c) gamma 2(d) none
Ans : a
Q29 : The compound that bonds filler to matrix in composite --->
copper
(The rest of questions written by : Mutaz Al-Hanouty )
1. Which is the weakest phase of sliver alloy mixed with mercury (i.e.Amalgam) :
Answer is Gamma 2
2. Which metal reacts with copper will produce the weakest phase (i.e.Gamma 2) :
Answer is Tin
3. Amalgam corrosion may be reduced by adding which of the following :Answer is copper
4. Which of the following is true of admixed amalgam compared withspherical amalgam :
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Answer is it requires the use of small condensers
5. Which of the following properties characterize amalgam :Answer is poor tensile strength
6. Set amalgam should have which of the following :Answer is little dimensional changes
7. Which of the following is true :Answer is used ultrasonic condensers is not recommended to amalgam
8. Compared to high copper amalgam , low copper amalgam is which of thefollowing : ( 2 answers are correct )
Answer: a. Have lower strength after 1 hour of placement
b. Accompanied by reduced micro-leakage
9. Amalgam tarnish may caused by amalgam contact with which of thefollowing : ( 2 answers are correct )
Answer: a. Chlorides
b. Sulfides
10.The following monomers is used for organic matrix except :
Answer is polystirine (what is this, the doctor dose not know :D )
11.Which of the following bonds filler and resin matrix :
Answer is silane
12.The activator is chemically cured composite is :
Answer is tertiary amide
13.Which of the following is correct regarding composite proprieties :Answer is they have similar thermal conductivity to tooth structure
14.The following is true except :
Answer is high filler content increase the CTE of composite
15.Which of the following is true about light cured composite :
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Answer is an example of high intensity light curing unit is argon laser unit
16.Compomers are : ( 2 answers are correct )
Answer : a. They release less fluoride compared to conventional GIC
b. Can be used in the same clinical situations as micro-filled
composites
17.Composites : ( 2 answers are correct )
Answer : a. May be user for constructing temporary crowns
b. They shrinks less compared to acrylic material
18.Which of the following is true of composite proprieties :
Answer is higher filler content increase stiffness
19.Sliver cements (i.e. metal reinforced GIC ) are :
Answer is have better abrasion resistance compared with conventional
GIC
20.conventional GIC used for the following clinical situations except : ( 2
answers are true )
Answer a. proximal tooth surface cavity in posterior teeth (i.e. class II)
b. occlusal lesions in permanent teeth
21.How is the setting reaction in GIC :
Answer is formation of aluminum bridges that cross-linked the polyacid
22.Which of the following is a propriety of conventional GIC : ( 2 answers are
correct )
Answer a. Low tensile strength
b. similar CTE to tooth structure
23.Which of the following regulates working time and setting time :
Answer is tartaric acid
24.Which of the following is false of GIC :
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Answer is they suffer from low initial fluoride release
25.Which of the following is false regarding GIC pits and fissure sealants :
Answer is The ability to fully penetrate pits and fissures
26.Compared to conventional GIC hybrid GIC characterized by the following
except :
Answer is No acid-base reaction
Removable Prosthodontics 1
Q1 - List Lab/Clinic denture making steps
Q2 - Which of the following muscles does not affect the denturemovement
(later ptyregoid)
Q3 : Metal tray (picture) is used for which of the followingmaterials
Margins of the Retromylohyoid fossa
Q4 : Hight for Incisors in Maxilla/mandible: Q5 : Picture: how far back should you go on the retromolar pad
(2/3 back
Q6 : picture: cast was made of gypsum type two & tray line wasblue line
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Q7 : Foxs plane is used where:
Q8 : Describe: Wax rim adjustments:
Q9 : List Stages of cold cure acrylic setting & which stage is itmanipulated in
Q10 : pic of metal tray , which impression material we can usewith this : impression compound , alginal , zone, hydrocolloids
Ans. pression compound
Assay Questions :1. list in order the laboratory steps for complete denture
fabrication ?
2. describe all the steps for maxillary wax rim adjustment
done during jaw relationship records :
3. list in order the clinical steps for complete denture
fabrication:4. a- list in order the laboratory steps of setting when self -
cure acrylic powder and liquid are mixed :
b- which stage is the crroect stage to manipulate and shape
the mix ?
5. list the limiting structures (anatomical borders) of the "
retromylohyoid fossa " :
Oral Epidemiology
(Written by 2008 Class)
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