cons- MIDTERM / BATCH 2010
- dentinal tubules ..if we double radius..wt happens to sensitivity?
directly proportional ma3 r^4 w inversely proportional ma3 el length of the tubule >>> sensitivity = (r^4) \ length
- about dentine esh el wrong statment?
ans: it's hardness is similar to cementum and bone
- factors to consider for finishing enamel margin ...
Ans : all the above ( support of enamel ,type of restorative material , degree of smoothness or roughness ..)
- Q about retention form .. not auxiliary factors ...
Ans : parallel or slightly undercut walls
- the cavity type of the distal surface of mandibular canine?? class 3
- How many point angles in class 5 cavity prep ..
Ans : 4
- How many external walls in class 111 cavity prep ...
Ans : 3
- So2al 3n el finishing burs .... except
Ans : LA type
- Blade width (10 , 85 , 8 , 14)
Ans : 1.0 mm
- Instrument used to bevel the axio pulpal line angle ....
Ans : gingival margin trimer
- Chisel used to cut ....
Ans : enamel
- So2al 3n el plastec instruments
Ans : all the above ( hard plastic , anodized aluminum , teflon )
- # of line angle in class 2 : 11
- # of external wallS in class 3 : 3
- internal walls : pulpal floor + axial wall
- The instrument used to assess the integrity of surfaces ... to detect decay ....
Ans : explorer
- Instrument used to retract the cheeks and tongue
Ans : mirror
- One of the following help to spread of dental caries
Ans : tufts+lamellae
- Transfer zone ....
Ans : 4-7
- Most of operators use this position ,,,mouth are easily viewed .....
Ans : 11 o'clock
- Caries that occurs at the junction of arestoration and the tooth and may progress under the restoration .....
Ans : secondary caries
- all of the following decrease when going from the outer surface of enamel to the inner except ...
Ans: solubility
- about the marginal ridge in premolars and molars >> 1.6 mm , 2mm
- asr3 component soluable in the haydroxyapitate >> carbonate
- all of the following is hand cutting instruments except
Ans: a,c,e (bur,condenser,discoid)
- Operative dentistry definition ... except :
Ans : it's require full coverage restoration ....
- Type of caries .. damage the tooth .. soft light colored and infectious
Ans : Rampant
- which is not part of hand instrument >> neck
- stainless steel burs >> dont corrode easily
- lower first molar in the FDI system >>>> 46
- upper firth molar in the universal system >>>> 14
- water percentage in enamel and dentine >>> 4-5%
- going down from the outer surface of enamel everything decrease except >> solubility
- the 245 bur dimensions: 0.8,,,3
1.6 premolar -2 molar elthickness elle bnetreko ll mesial w distal margines
.................
sho esem elada = perodntal prob
..................
according to the universal numbering system , the lower left 2nd molar is : #18
....................
The caries that are hard & brown-black : Arrested
...................
according to FDI the lower right premolar 44
....................
examples of external walls : lingual & gingival
........................
external wall = lingual + gingival
..........................
enamel tufts & lamella help in caries spread
......................
Width of the blade is 1 mm
........ .
Which line angle should be beveled in class 2 cavity prep?
-axiopulpal line angle
.......................
Fe so2al 3n 2l rested finger
......................
Which of the gollowing not featur of outline form ??
-flat pulpal floor
............................
Hatchet mainly used to remove?
-enamel
.......................
Transfer zone in 4 handed dentistry?
-located 4-7 clock posittion
.........................
All of thr following decrease as we go down to DEJ except?
-solubilitty
............................
What is wrong about thermodynamic theory?
-pain sensation due to activation of nerve terminal inside the dentinal tubule
.............................
Caries found on the buccal surface of lower first molar?
-Ana 7tet-ha class 1 , w nas by7ke class 5 !!!!!!!!
........................
i
We should have retention form while we do our cavity prep, because there will be disloadgment due to?
-lateral and occlusal force
....................................
How many external walll we have in class 5 cavity prep?
-4 wall
................................
How many point angle we have in class 1 cavity prep?
-4 point angle .
..................................
Fe so2al 3n 2l twizzer .
...................................
About finishing bure ... except?
-it has 6 blade
.................................
There was pic for burnesher, What do we use it for?
-smoothening of freshly backed amalgum restoration .
-pic of bur,, the arrow is pointing at,,? shank
-chisel is primarily for cutting..? Enamel
-which of the followings are hand cutting instruments..? gingival margin trimmer + spoon excavator
-organic content of enamel :1-2%
-instruments made of crbon steel are:ans is b
a)brittle and can be used in all designs
b)hard and wear resistant
c)..
- if we double the radius of dentinal tubules, the flow would be ...? 16X
-a disease rapidly damaging the tooth and is usually in the form of many soft, light colored lesions .....?rampant caries
directly proportional ma3 r^4 w inversely proportional ma3 el length of the tubule >>> sensitivity = (r^4) \ length
- about dentine esh el wrong statment?
ans: it's hardness is similar to cementum and bone
- factors to consider for finishing enamel margin ...
Ans : all the above ( support of enamel ,type of restorative material , degree of smoothness or roughness ..)
- Q about retention form .. not auxiliary factors ...
Ans : parallel or slightly undercut walls
- the cavity type of the distal surface of mandibular canine?? class 3
- How many point angles in class 5 cavity prep ..
Ans : 4
- How many external walls in class 111 cavity prep ...
Ans : 3
- So2al 3n el finishing burs .... except
Ans : LA type
- Blade width (10 , 85 , 8 , 14)
Ans : 1.0 mm
- Instrument used to bevel the axio pulpal line angle ....
Ans : gingival margin trimer
- Chisel used to cut ....
Ans : enamel
- So2al 3n el plastec instruments
Ans : all the above ( hard plastic , anodized aluminum , teflon )
- # of line angle in class 2 : 11
- # of external wallS in class 3 : 3
- internal walls : pulpal floor + axial wall
- The instrument used to assess the integrity of surfaces ... to detect decay ....
Ans : explorer
- Instrument used to retract the cheeks and tongue
Ans : mirror
- One of the following help to spread of dental caries
Ans : tufts+lamellae
- Transfer zone ....
Ans : 4-7
- Most of operators use this position ,,,mouth are easily viewed .....
Ans : 11 o'clock
- Caries that occurs at the junction of arestoration and the tooth and may progress under the restoration .....
Ans : secondary caries
- all of the following decrease when going from the outer surface of enamel to the inner except ...
Ans: solubility
- about the marginal ridge in premolars and molars >> 1.6 mm , 2mm
- asr3 component soluable in the haydroxyapitate >> carbonate
- all of the following is hand cutting instruments except
Ans: a,c,e (bur,condenser,discoid)
- Operative dentistry definition ... except :
Ans : it's require full coverage restoration ....
- Type of caries .. damage the tooth .. soft light colored and infectious
Ans : Rampant
- which is not part of hand instrument >> neck
- stainless steel burs >> dont corrode easily
- lower first molar in the FDI system >>>> 46
- upper firth molar in the universal system >>>> 14
- water percentage in enamel and dentine >>> 4-5%
- going down from the outer surface of enamel everything decrease except >> solubility
- the 245 bur dimensions: 0.8,,,3
1.6 premolar -2 molar elthickness elle bnetreko ll mesial w distal margines
.................
sho esem elada = perodntal prob
..................
according to the universal numbering system , the lower left 2nd molar is : #18
....................
The caries that are hard & brown-black : Arrested
...................
according to FDI the lower right premolar 44
....................
examples of external walls : lingual & gingival
........................
external wall = lingual + gingival
..........................
enamel tufts & lamella help in caries spread
......................
Width of the blade is 1 mm
........ .
Which line angle should be beveled in class 2 cavity prep?
-axiopulpal line angle
.......................
Fe so2al 3n 2l rested finger
......................
Which of the gollowing not featur of outline form ??
-flat pulpal floor
............................
Hatchet mainly used to remove?
-enamel
.......................
Transfer zone in 4 handed dentistry?
-located 4-7 clock posittion
.........................
All of thr following decrease as we go down to DEJ except?
-solubilitty
............................
What is wrong about thermodynamic theory?
-pain sensation due to activation of nerve terminal inside the dentinal tubule
.............................
Caries found on the buccal surface of lower first molar?
-Ana 7tet-ha class 1 , w nas by7ke class 5 !!!!!!!!
........................
i
We should have retention form while we do our cavity prep, because there will be disloadgment due to?
-lateral and occlusal force
....................................
How many external walll we have in class 5 cavity prep?
-4 wall
................................
How many point angle we have in class 1 cavity prep?
-4 point angle .
..................................
Fe so2al 3n 2l twizzer .
...................................
About finishing bure ... except?
-it has 6 blade
.................................
There was pic for burnesher, What do we use it for?
-smoothening of freshly backed amalgum restoration .
-pic of bur,, the arrow is pointing at,,? shank
-chisel is primarily for cutting..? Enamel
-which of the followings are hand cutting instruments..? gingival margin trimmer + spoon excavator
-organic content of enamel :1-2%
-instruments made of crbon steel are:ans is b
a)brittle and can be used in all designs
b)hard and wear resistant
c)..
- if we double the radius of dentinal tubules, the flow would be ...? 16X
-a disease rapidly damaging the tooth and is usually in the form of many soft, light colored lesions .....?rampant caries