1. For lower premolars, the purpose of inclining the handpiece
lingually is to
A. Avoid buccal pulp horn
B. Avoid lingual pulp horn
C. Remove unsupported enamel
D. Conserve lingual dentine
So when you look at this question what you normally do just write the answer from the
answer key or go and search for it .well sometimes its difficult so one needs help .that’s
why I am here for you all .
http://www.columbia.edu/itc/hs/dental/endo/client_edit/lectures/images/accessprep11.gif
While looking at the picture you will find the answer I got this from google images .its a
picture of lower premolar.
So the answer will be A
2. For an amalgam Restoration of weakened cusp you should
A. Reduce cusp by 2mm on a flat base for more resistance
B. Reduce cusp by 2mm following the outline of the cusp
C. Reduce 2mm for retention form
So answer is A
sturdevant’s art and science of operative dentistry page 305
restorative material thickness affects the ability of a material to resist fracture .the
minimal occlusal thickness for amalgam for appropriate resistance to fracture is 1.5
mm ,cast metal ,1 to 2 mm and porcelain ,2mm .composite restoration material may
have more acute marginal angles , and although no specific thickness dimension has
been noted for strength ,most composite restorations are 1 to 2 mm thick .
3. Before filling a class V abrasion cavity with GIC you should
A. Clean with pumice, rubber cup, water and weak acid
B. Dry the cavity thoroughly before doing anything
C. Acid itch cavity then dry thoroughly
answer is A
IN CLASS V we restore it with gic as its a moisture bearing material .
we clean with pumice ,rubber cup and don’t dry it much ,as gic is moisture loving .
,for 10% polyacrylic acid conditioning is done for 20 sec
20% polyacrylic acid conditioning is done for 10 sec as we don’t etch gic because there is
a chemical bond rather than micromechanical bond
if you need more information on gic how it interacts and about the new material
common are fuji with a wide variety that is been used in australia .
4. Which of the following statement about the defective margins
of amalgam restoration is true?
A. The larger the breakdown, the greater the chance of decay.
read dental caries http://www.thejpd.org/article/S0022-3913(05)80126-X/pdf
Secondary caries is one of the greatest causes for replacement of amalgam restorations.
This study verified whether marginal defects in class I restorations could be a
determining factor in the development of secondary caries. Fifty-five extracted premolars
and molars whose occlusal surfaces were already restored with amalgam were selected.
A macroscopic examination of these teeth was carried out to see whether there was a
difference in the prevalence of caries beneath ditched and non ditched margins. To
assess the presence of caries, a section was ground in each tooth so that the cut passed
through a ditched margin and a better margin. This permitted assessment of the two
types of margins that had been exposed to the same oral environment. Macroscopic
examination revealed caries in 3.6% of the non ditched margins and caries in 20% of the
ditched margins. Microscopic examination revealed caries in 47.06% of the non ditched
margins and caries in 58.82% of the ditched margins. Statistical analysis supports the
conclusion that the marginal defect itself is insufficient to determine the presence of
secondary caries that surround the amalgam restoration on the occlusal surface.
5. The retention Pin in an amalgam restoration should be placed
A. Parallel to the outer wall
B. Parallel to the long axis of tooth
answer is A
you may read about pin in amalgam restoration from the site below
http://www.slideshare.net/UDDent/pin-retained-amalgam-restorations
,9. The most mineralised part of the dentine is
, A. Peritubular dentin
Peritubular dentin, a vertebrate
apatitic mineralized tissue without
collagen: role of a phospholipid-
proteolipid complex.
http://www.ncbi.nlm.nih.gov/pubmed/17674072
10 .A 45 year old patient awoke with swollen face ,puffiness around the eyes and edema
of the upper lip with redness and dryness. when he went to bed he had the swelling .
pain or dental complaints.Examination shows several deep silicate restorations in the
anterior teeth but examination is negative for caries ,thermal
test ,percussion ,palpation ,pain and periapical area of restoration. The patient ‘s
temperature is normal.The say before he had series of gasterointerninal xrays at the local
hospital and was given a clean bill of health .The condition is
A. Acute periapical abscess
B.Angioneurotic edema
C.Infectious mononucleosis
D.Acute maxillary sinusitis
E.Acute apical periodontitis
answer is B
http://en.wikipedia.org/wiki/Angioedema
11. Internal resorption is
A. Radiolucency over unaltered canal
B. Usually in a response to trauma
C. Radiopacity over unaltered canal
answer is B
http://en.wikipedia.org/wiki/Tooth_resorption
Internal resorption
lingually is to
A. Avoid buccal pulp horn
B. Avoid lingual pulp horn
C. Remove unsupported enamel
D. Conserve lingual dentine
So when you look at this question what you normally do just write the answer from the
answer key or go and search for it .well sometimes its difficult so one needs help .that’s
why I am here for you all .
http://www.columbia.edu/itc/hs/dental/endo/client_edit/lectures/images/accessprep11.gif
While looking at the picture you will find the answer I got this from google images .its a
picture of lower premolar.
So the answer will be A
2. For an amalgam Restoration of weakened cusp you should
A. Reduce cusp by 2mm on a flat base for more resistance
B. Reduce cusp by 2mm following the outline of the cusp
C. Reduce 2mm for retention form
So answer is A
sturdevant’s art and science of operative dentistry page 305
restorative material thickness affects the ability of a material to resist fracture .the
minimal occlusal thickness for amalgam for appropriate resistance to fracture is 1.5
mm ,cast metal ,1 to 2 mm and porcelain ,2mm .composite restoration material may
have more acute marginal angles , and although no specific thickness dimension has
been noted for strength ,most composite restorations are 1 to 2 mm thick .
3. Before filling a class V abrasion cavity with GIC you should
A. Clean with pumice, rubber cup, water and weak acid
B. Dry the cavity thoroughly before doing anything
C. Acid itch cavity then dry thoroughly
answer is A
IN CLASS V we restore it with gic as its a moisture bearing material .
we clean with pumice ,rubber cup and don’t dry it much ,as gic is moisture loving .
,for 10% polyacrylic acid conditioning is done for 20 sec
20% polyacrylic acid conditioning is done for 10 sec as we don’t etch gic because there is
a chemical bond rather than micromechanical bond
if you need more information on gic how it interacts and about the new material
common are fuji with a wide variety that is been used in australia .
4. Which of the following statement about the defective margins
of amalgam restoration is true?
A. The larger the breakdown, the greater the chance of decay.
read dental caries http://www.thejpd.org/article/S0022-3913(05)80126-X/pdf
Secondary caries is one of the greatest causes for replacement of amalgam restorations.
This study verified whether marginal defects in class I restorations could be a
determining factor in the development of secondary caries. Fifty-five extracted premolars
and molars whose occlusal surfaces were already restored with amalgam were selected.
A macroscopic examination of these teeth was carried out to see whether there was a
difference in the prevalence of caries beneath ditched and non ditched margins. To
assess the presence of caries, a section was ground in each tooth so that the cut passed
through a ditched margin and a better margin. This permitted assessment of the two
types of margins that had been exposed to the same oral environment. Macroscopic
examination revealed caries in 3.6% of the non ditched margins and caries in 20% of the
ditched margins. Microscopic examination revealed caries in 47.06% of the non ditched
margins and caries in 58.82% of the ditched margins. Statistical analysis supports the
conclusion that the marginal defect itself is insufficient to determine the presence of
secondary caries that surround the amalgam restoration on the occlusal surface.
5. The retention Pin in an amalgam restoration should be placed
A. Parallel to the outer wall
B. Parallel to the long axis of tooth
answer is A
you may read about pin in amalgam restoration from the site below
http://www.slideshare.net/UDDent/pin-retained-amalgam-restorations
,9. The most mineralised part of the dentine is
, A. Peritubular dentin
Peritubular dentin, a vertebrate
apatitic mineralized tissue without
collagen: role of a phospholipid-
proteolipid complex.
http://www.ncbi.nlm.nih.gov/pubmed/17674072
10 .A 45 year old patient awoke with swollen face ,puffiness around the eyes and edema
of the upper lip with redness and dryness. when he went to bed he had the swelling .
pain or dental complaints.Examination shows several deep silicate restorations in the
anterior teeth but examination is negative for caries ,thermal
test ,percussion ,palpation ,pain and periapical area of restoration. The patient ‘s
temperature is normal.The say before he had series of gasterointerninal xrays at the local
hospital and was given a clean bill of health .The condition is
A. Acute periapical abscess
B.Angioneurotic edema
C.Infectious mononucleosis
D.Acute maxillary sinusitis
E.Acute apical periodontitis
answer is B
http://en.wikipedia.org/wiki/Angioedema
11. Internal resorption is
A. Radiolucency over unaltered canal
B. Usually in a response to trauma
C. Radiopacity over unaltered canal
answer is B
http://en.wikipedia.org/wiki/Tooth_resorption
Internal resorption
