What is TRUE in regard to the preparation of occlusal rests: A. Use an inverted cone bur B. Use a flat fissure bur C. Parallel to occlusal plane D. At right angle to the long axis of tooth E. None of the above

What is TRUE in regard to the preparation of occlusal rests:
A. Use an inverted cone bur
B. Use a flat fissure bur
C. Parallel to occlusal plane
D. At right angle to the long axis of tooth
E. None of the above
by

1 Answer

Answer :

E. None of the above
by

Related questions

Retention for occlusal amalgam cavities in premolars is BEST provided by A. Slightly undercutting of walls with inversed cone bur B. Mesial and distal undercuts C. Buccal and lingual undercuts

Description : Retention for occlusal amalgam cavities in premolars is BEST provided by A. Slightly undercutting of walls with inversed cone bur B. Mesial and distal undercuts C. Buccal and lingual undercuts

Last Answer : C. Buccal and lingual undercuts

How do you prepare the floor of pulp chamber in molars: A. Swab and dry with cotton wool and excavate B. Use round bur to flatten the floor C. Under cut walls D. Use flat end fissure bur to make it levelled

Description : How do you prepare the floor of pulp chamber in molars: A. Swab and dry with cotton wool and excavate B. Use round bur to flatten the floor C. Under cut walls D. Use flat end fissure bur to make it levelled

Last Answer : A. Swab and dry with cotton wool and excavate

The pulpal floor of the Class II cavity for a mandibular first premolar should be: GA.Parallel to occlusal plane B. Perpendicular to long axis C. Tilted lingually

Description : The pulpal floor of the Class II cavity for a mandibular first premolar should be: GA.Parallel to occlusal plane B. Perpendicular to long axis C. Tilted lingually

Last Answer : GA.Parallel to occlusal plane

Which rotary instrument gives the smoothest enamel cut? a. carborundum stone (green stone) b. aluminum oxide stone (white stone) c. plain fissure bur d. cross-cut fissure bur e. medium diamond bur (great efficiency but roughest cut)

Description : Which rotary instrument gives the smoothest enamel cut? a. carborundum stone (green stone) b. aluminum oxide stone (white stone) c. plain fissure bur d. cross-cut fissure bur e. medium diamond bur (great efficiency but roughest cut)

Last Answer : c. plain fissure bur

The bur should be tilted lingually when preparing the occlusal surface of class II cavity on a mandibular first premolar in order to: I. Remove unsupported enamel II. Prevent encroachment on the buccal pulp horn III. Prevent encroachment on the lingual pulp horn IV. Maintain dentinal support of the lingual cusp A. I and II B. I and III C. II and IV D. III and IV E. IV only

Description : The bur should be tilted lingually when preparing the occlusal surface of class II cavity on a mandibular first premolar in order to: I. Remove unsupported enamel II. Prevent encroachment on the buccal pulp horn III. Prevent ... and II B. I and III C. II and IV D. III and IV E. IV only

Last Answer : C. II and IV

.When correction preparation for re contouring of occlusal surface is to be applied, grinding only of the adjusted surface: A. Should not be felt flat B. Requires a flat crown C. Requires no contact with adjacent teeth D. Should be felt flat

Description : .When correction preparation for re contouring of occlusal surface is to be applied, grinding only of the adjusted surface: A. Should not be felt flat B. Requires a flat crown C. Requires no contact with adjacent teeth D. Should be felt flat

Last Answer : A. Should not be felt flat

In partial dentures the guidelines “Guiding Planes” serve to: A. Aid in balancing occlusion B. Assure predictable clasp retention C. Form right angle with the occlusal plane D. Eliminate the necessity for precision attachment E. Eliminate the necessity for a posterior clasp

Description : In partial dentures the guidelines “Guiding Planes” serve to: A. Aid in balancing occlusion B. Assure predictable clasp retention C. Form right angle with the occlusal plane D. Eliminate the necessity for precision attachment E. Eliminate the necessity for a posterior clasp

Last Answer : B. Assure predictable clasp retention

Occlusal cavity with extension of the buccal fissure is classified as, A. Class II B. Class III C. Class I D. Class V

Description : Occlusal cavity with extension of the buccal fissure is classified as, A. Class II B. Class III C. Class I D. Class V

Last Answer : C. Class I

the location of Class V is in, A. The buccal pit /fissure/ B. The occlusal surface C. The cervical third

Description : the location of Class V is in, A. The buccal pit /fissure/ B. The occlusal surface C. The cervical third

Last Answer : C. The cervical third

If used, in which direction should pinholes be placed? a. parallel to the long axis of the tooth b.parallel to the nearest external surface c. at a 15 degree angle to the long axis of the tooth d. perpendicular to the gingival floor e. directly below and parallel to restored cusp tip

Description : If used, in which direction should pinholes be placed? a. parallel to the long axis of the tooth b.parallel to the nearest external surface c. at a 15 degree angle to the long axis of the tooth d. perpendicular to the gingival floor e. directly below and parallel to restored cusp tip

Last Answer : b.parallel to the nearest external surface

Why do you polish the teeth before seating of a partial denture: A. To smooth the rough surface B. To minimise the retention of plaque C. To increase the adoptability of occlusal rests

Description : Why do you polish the teeth before seating of a partial denture: A. To smooth the rough surface B. To minimise the retention of plaque C. To increase the adoptability of occlusal rests

Last Answer : B. To minimise the retention of plaque

Ala-Tragal line is:** A. The line running from the tragus of the nose to ala of the ear B. A guide used to orient the occlusal plane C. Parallel to Frankfurt horizontal plane D. A guide to the occluding face height in complete denture.

Description : Ala-Tragal line is:** A. The line running from the tragus of the nose to ala of the ear B. A guide used to orient the occlusal plane C. Parallel to Frankfurt horizontal plane D. A guide to the occluding face height in complete denture.

Last Answer : B. A guide used to orient the occlusal plane

In the construction of an RPD, guiding planes are created, A. Perpendicular to the occlusal plane B. Parallel towards the path of placement.

Description : In the construction of an RPD, guiding planes are created,  A. Perpendicular to the occlusal plane  B. Parallel towards the path of placement. 

Last Answer : B. Parallel towards the path of placement.

When patient bites in protrusion with complete dentures you notice that the posterior teeth do not meet, what would you do to solve this: A. Increase the compensatory curve B. Decrease the angle of the occlusal plane

Description : When patient bites in protrusion with complete dentures you notice that the posterior teeth do not meet, what would you do to solve this: A. Increase the compensatory curve B. Decrease the angle of the occlusal plane

Last Answer : A. Increase the compensatory curve

When setting up teeth for complete dentures having bilateral balanced occlusion, separation of posterior teeth during protrusion is done by: A. Increasing the anterior posterior occlusal curve B. Decreasing the angle orientation of the occlusal plane

Description : When setting up teeth for complete dentures having bilateral balanced occlusion, separation of posterior teeth during protrusion is done by: A. Increasing the anterior posterior occlusal curve B. Decreasing the angle orientation of the occlusal plane

Last Answer : B. Decreasing the angle orientation of the occlusal plane

In regard to marginal leakage in amalgam: A. The wider the gap the better the chance of secondary caries B. Seal the margin with fissure sealant would prevent further breakdown C. Secondary caries may develop

Description : In regard to marginal leakage in amalgam: A. The wider the gap the better the chance of secondary caries B. Seal the margin with fissure sealant would prevent further breakdown C. Secondary caries may develop

Last Answer : A. The wider the gap the better the chance of secondary caries

Amalgam restoration, when do you have to replace it? a. Ditching of the edges. b. The probe penetrates the area between the margin and tooth tissue. c. Fissure of the surface of the amalgam. d. When there is chronic inflammation of the pulp.

Description : Amalgam restoration, when do you have to replace it? a. Ditching of the edges. b. The probe penetrates the area between the margin and tooth tissue. c. Fissure of the surface of the amalgam. d. When there is chronic inflammation of the pulp.

Last Answer : c. Fissure of the surface of the amalgam.

Tooth under occlusal trauma may show: A. Bone resorption B. Necrosis of the pulp C. Hypercementosis D. Triangulation E. All of the above

Description : Tooth under occlusal trauma may show: A. Bone resorption B. Necrosis of the pulp C. Hypercementosis D. Triangulation E. All of the above

Last Answer : E. All of the above

A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown can BEST be achieved by: A. Hand burnishing B. Mechanical burnishing C. Using finishing burs and points to remove the enamel margins on the tooth D. Making a new impression and remaking the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Description : A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown ... the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Last Answer : D. Making a new impression and remaking the crown

A tooth under occlusal trauma shows A. Bone resorption B. Necrosis of the pulp C. Hypercementosis D. Triangulation Vertical defects occur adjacent to a tooth and usually in the form of a triangular area of missing bone, known as triangulation E. All of the above

Description : A tooth under occlusal trauma shows A. Bone resorption B. Necrosis of the pulp C. Hypercementosis D. Triangulation Vertical defects occur adjacent to a tooth and usually in the form of a triangular area of missing bone, known as triangulation E. All of the above

Last Answer : E. All of the above

.For an onlay preparation, which of the following is the MOST EFFECTIVE means for verifying adequate occlusal clearance A. Wax bite chew in B. Proper depth cuts C. Visual inspection D. Articulating paper

Description : .For an onlay preparation, which of the following is the MOST EFFECTIVE means for verifying adequate occlusal clearance A. Wax bite chew in B. Proper depth cuts C. Visual inspection D. Articulating paper

Last Answer : A. Wax bite chew in

The retention pin in an amalgam restoration should be placed, A. Parallel to the outer wall B. Parallel to the long axis of tooth

Description : The retention pin in an amalgam restoration should be placed, A. Parallel to the outer wall B. Parallel to the long axis of tooth

Last Answer : A. Parallel to the outer wall

An occlusal approaching clasp TIP, A. Should occupy a predetermined undercut B. Contact the tooth under the survey line C. Rigid

Description : An occlusal approaching clasp TIP, A. Should occupy a predetermined undercut B. Contact the tooth under the survey line C. Rigid

Last Answer : B. Contact the tooth under the survey line

The main factor controlling a decision to increase the occlusal height of teeth for extensive oral reconstruction is whether, A. the inter occlusal distance will be physiologically acceptable after treatment B. there will be sufficient tooth bulk in the abutment teeth for proper retention of the crowns C. at least two third of the original alveolar process will remain for adequate periodontal support D. the aesthetic appearance of the patient will improve sufficiently to warrant the planned reconstruction

Description : The main factor controlling a decision to increase the occlusal height of teeth for extensive oral reconstruction is whether, A. the inter occlusal distance will be physiologically ... the aesthetic appearance of the patient will improve sufficiently to warrant the planned reconstruction

Last Answer : A. the inter occlusal distance will be physiologically acceptable after treatment

Reconstructing the occlusal anatomy is based on: A. Functional factors B. Depth of restoration on a tooth C. Necessity to restore normal anatomy

Description : Reconstructing the occlusal anatomy is based on: A. Functional factors B. Depth of restoration on a tooth C. Necessity to restore normal anatomy

Last Answer : A. Functional factors

What is the main purpose of using Stress breakers: A. To distribute the load between teeth and ridges B. To distribute the load between the clasps and the face end of the saddle C. It relieves the abutment tooth of occlusal loads that may exceed their physiologic strength

Description : What is the main purpose of using Stress breakers: A. To distribute the load between teeth and ridges B. To distribute the load between the clasps and the face end of the saddle C. It relieves the abutment tooth of occlusal loads that may exceed their physiologic strength

Last Answer : C. It relieves the abutment tooth of occlusal loads that may exceed their physiologic strength

The main factor controlling a decision to increase the occlusal height of teeth for extensive oral reconstruction is whether, A. The inter occlusal distance will be physiologically acceptable after treatment B. There will be sufficient tooth bulk in the abutment teeth for proper retention of the crowns C. At least two third of the original alveolar process will remain for adequate periodontal support D. The aesthetic appearance of the patient will improve sufficiently to warrant the planned reconstruction

Description : The main factor controlling a decision to increase the occlusal height of teeth for extensive oral reconstruction is whether, A. The inter occlusal distance will be physiologically ... . The aesthetic appearance of the patient will improve sufficiently to warrant the planned reconstruction

Last Answer : A. The inter occlusal distance will be physiologically acceptable after treatment

Which nerve is anesthesised in anterior border of ramus and 1 cm above occlusal plane of lower posterior teeth: A. Lingual nerve B. Long buccal nerve

Description : Which nerve is anesthesised in anterior border of ramus and 1 cm above occlusal plane of lower posterior teeth: A. Lingual nerve B. Long buccal nerve

Last Answer : B. Long buccal nerve

The MOST stable area to evaluate the craniofacial growth is: A. Nasal floor B. Cranial vault C. Occlusal plane D. Naso maxillary complex E. Anterior cranial base

Description : The MOST stable area to evaluate the craniofacial growth is: A. Nasal floor B. Cranial vault C. Occlusal plane D. Naso maxillary complex E. Anterior cranial base

Last Answer : E. Anterior cranial base

In regard to apically displaced flap, what is TRUE: A. Does not preserve attached gingivae B. Does not lengthen crown of tooth C. Is a pocket elimination procedure D. A & C

Description : In regard to apically displaced flap, what is TRUE: A. Does not preserve attached gingivae B. Does not lengthen crown of tooth C. Is a pocket elimination procedure D. A & C

Last Answer : C. Is a pocket elimination procedure

Which part of the cranium is considered as the most stable area, A. Frankfort plane B. Occlusal plane C. Anterior cranial plane D. Anterior nasal to gnathion.

Description : Which part of the cranium is considered as the most stable area, A. Frankfort plane B. Occlusal plane C. Anterior cranial plane D. Anterior nasal to gnathion.

Last Answer : C. Anterior cranial plane

To increase the stability of the lower denture, A. The occlusal plane should be below the tongue B. The occlusal plane should be above the tongue C. The lingual flanges should be concave

Description : To increase the stability of the lower denture, A. The occlusal plane should be below the tongue B. The occlusal plane should be above the tongue C. The lingual flanges should be concave

Last Answer : A. The occlusal plane should be below the tongue

The optimum cavosurface angle for occlusal amalgam surface is: A. 45-60° B. 70-85° C. 45-80° D. 95-110° E. 130-150°

Description : The optimum cavosurface angle for occlusal amalgam surface is: A. 45-60° B. 70-85° C. 45-80° D. 95-110° E. 130-150°

Last Answer : D. 95-110°

Which of the following is true regarding preparation of custom tray for elastomeric impression: a. Adhesive is preferred over perforation. b. Perforation provides adequate retention c. Adhesive is applied immediately before procedure d. Perforations are not made in the area over the prepared tooth .

Description : Which of the following is true regarding preparation of custom tray for elastomeric impression: a. Adhesive is preferred over perforation. b. Perforation provides adequate retention c. Adhesive is ... before procedure d. Perforations are not made in the area over the prepared tooth .

Last Answer : a. Adhesive is preferred over perforation.

.Which of the following is true regarding preparation of custom tray for elastomeric impression: A. Adhesive is preferred over perforation B. Perforation provides adequate retention C. Adhesive is applied immediately before procedure D. Perforations are not made in the area over the prepared tooth

Description : .Which of the following is true regarding preparation of custom tray for elastomeric impression: A. Adhesive is preferred over perforation B. Perforation provides adequate retention C. Adhesive is ... immediately before procedure D. Perforations are not made in the area over the prepared tooth

Last Answer : A. Adhesive is preferred over perforation

Which is correct in regard to shade selection of crowns: A. It should be selected before starting preparation B. Chroma is the lightness/darkness of colours C. Value is the colour itself D. Hue is the concentration of colours

Description : Which is correct in regard to shade selection of crowns: A. It should be selected before starting preparation B. Chroma is the lightness/darkness of colours C. Value is the colour itself D. Hue is the concentration of colours

Last Answer : A. It should be selected before starting preparation

In regard to Universal currete what is true? a- You can use both ends equally. b- You can use one end only. c- Angle of shank and blade is 70 degrees. d- You can use it for specific area. e- It has very rigid handle.

Description : In regard to Universal currete what is true? a- You can use both ends equally. b- You can use one end only. c- Angle of shank and blade is 70 degrees. d- You can use it for specific area. e- It has very rigid handle.

Last Answer : a- You can use both ends equally.

the pulp horn most likely to be exposed in the preparation of large cavity in permanent molar tooth is,CHECK ITS VERY CONTROVERSIAL QUESTION A. Mesio–Lingual in upper first molars B. Mesio–Buccal in upper first molars C. Disto–buccal in lower first molars D. Mesio–Lingual in lower first molars E. Mesio- Buccal in lower first molar

Description : the pulp horn most likely to be exposed in the preparation of large cavity in permanent molar tooth is,CHECK ITS VERY CONTROVERSIAL QUESTION A. Mesio-Lingual in upper first molars B. Mesio-Buccal in ... first molars D. Mesio-Lingual in lower first molars E. Mesio- Buccal in lower first molar

Last Answer : B. Mesio–Buccal in upper first molars

A vital tooth has a crown cemented to a pin-retained amalgam core; where does a failure occur: A. Between crown and cement B. Between core and cement C. In the crown and the root D. In the core and the margin preparation

Description : A vital tooth has a crown cemented to a pin-retained amalgam core; where does a failure occur: A. Between crown and cement B. Between core and cement C. In the crown and the root D. In the core and the margin preparation

Last Answer : B. Between core and cement

The cervical finish line of a full veneer crown preparation should be placed: A. Just supragingival whenever is possible B. According to the depth of gingival crevice C. Subgingival to reduce ability of recurrent caries D. At the junction of tooth and amalgam core

Description : The cervical finish line of a full veneer crown preparation should be placed: A. Just supragingival whenever is possible B. According to the depth of gingival crevice C. Subgingival to reduce ability of recurrent caries D. At the junction of tooth and amalgam core

Last Answer : A. Just supragingival whenever is possible

Sensitivity to hot and cold foods soon after cavity preparation and placement of GIC and composite resin in an upper incisor tooth is due to: A. Mechanical trauma due to cavity preparation B. Chemical C. Heat from GIC settings

Description : Sensitivity to hot and cold foods soon after cavity preparation and placement of GIC and composite resin in an upper incisor tooth is due to: A. Mechanical trauma due to cavity preparation B. Chemical C. Heat from GIC settings

Last Answer : A. Mechanical trauma due to cavity preparation

During mouth preparation for RPD on tooth adjacent to edentulous area. There is dentine exposure: A. Restoration is required B. Proceed with rest seat preparation and fabrication if involved area is not more than 2mm

Description : During mouth preparation for RPD on tooth adjacent to edentulous area. There is dentine exposure: A. Restoration is required B. Proceed with rest seat preparation and fabrication if involved area is not more than 2mm

Last Answer : A. Restoration is required

When the enamel of the tooth is exposed to preparation containing high concentrations of fluoride the major reaction is: M07 A. Sodium fluoride B. Calcium fluoride C. Stannous fluoride D. Fluoroapatite

Description : When the enamel of the tooth is exposed to preparation containing high concentrations of fluoride the major reaction is: M07 A. Sodium fluoride B. Calcium fluoride C. Stannous fluoride D. Fluoroapatite

Last Answer : D. Fluoroapatite

At what angle to the external surface should proximal cavosurface walls in Class II preparation for the reception of an amalgam filling be finished: A. Acute angle B. Right angle C. Obtuse angle D. 45 angle

Description : At what angle to the external surface should proximal cavosurface walls in Class II preparation for the reception of an amalgam filling be finished: A. Acute angle B. Right angle C. Obtuse angle D. 45 angle

Last Answer : C. Obtuse angle

At which angle to the external surface of proximal cavity walls should a class II preparation for amalgam be finished A. An acute angle B. An obtuse angle si es el cajon proximal C. A right angle D. An angle of 45°

Description : At which angle to the external surface of proximal cavity walls should a class II preparation for amalgam be finished A. An acute angle B. An obtuse angle si es el cajon proximal C. A right angle D. An angle of 45°

Last Answer : B. An obtuse angle si es el cajon proximal

When a tooth is twisted along its long axis this is called: A. Mesio version B. Disto version C. Lingo version D. Torsion

Description : When a tooth is twisted along its long axis this is called: A. Mesio version B. Disto version C. Lingo version D. Torsion

Last Answer : D. Torsion

What is NOT TRUE about occlusal trauma: A. Cemental tears B. Bone loss C. Mobility D. True pocket formation E. Bleeding in periodontal ligament

Description : What is NOT TRUE about occlusal trauma: A. Cemental tears B. Bone loss C. Mobility D. True pocket formation E. Bleeding in periodontal ligament

Last Answer : D. True pocket formation

The vertical incision of a mucoperiostal flap should: A. Always extend to the alveolar mucoperiostal B. Bisect the middle of gingival papillae C. Be at the right angle of the tooth

Description : The vertical incision of a mucoperiostal flap should: A. Always extend to the alveolar mucoperiostal B. Bisect the middle of gingival papillae C. Be at the right angle of the tooth

Last Answer : A. Always extend to the alveolar mucoperiostal

Benign migratory glossitis or Geographic Tongue, manifests itself in the oral cavity as, A. Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue B. Furrows outlined the dorsal surface radiating out from a central groove in the centre of the tongue C. Loss (atrophy) of filiform papillae in multiple irregularly outlined areas D. Irregularly outlined erythematous area of hyper trophic fungiform E. A fibrinous exudate on the dorsal surface F. Grooves (fissures) radiating from a central fissure G. Irregular area in the midline of the tongue

Description : Benign migratory glossitis or Geographic Tongue, manifests itself in the oral cavity as, A. Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue B. Furrows outlined the ... (fissures) radiating from a central fissure G. Irregular area in the midline of the tongue

Last Answer : C. Loss (atrophy) of filiform papillae in multiple irregularly outlined areas