Generalised loss of tooth structure by chemical means called, A. Erosion B. Attrition

Generalised loss of tooth structure by chemical means called,
A. Erosion
B. Attrition
by

1 Answer

Answer :

A. Erosion
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Which of the following factors can affect the shape and size of the pulp canal: A. Chemical irritation and caries B. Trauma and function C. Attrition, wear and aging of the patient D. All of the above

Description : Which of the following factors can affect the shape and size of the pulp canal: A. Chemical irritation and caries B. Trauma and function C. Attrition, wear and aging of the patient D. All of the above

Last Answer : D. All of the above

Attrition is,v A. Process of normal wear of teeth B. Lost of teeth substance as a result of chemical exposure

Description : Attrition is,v A. Process of normal wear of teeth B. Lost of teeth substance as a result of chemical exposure

Last Answer : A. Process of normal wear of teeth

The size of the pulp chamber within the tooth is influenced by: A. Age B. Parafunctional C. History of the tooth /abrasion, erosion, caries/ D. All of the above

Description : The size of the pulp chamber within the tooth is influenced by: A. Age B. Parafunctional C. History of the tooth /abrasion, erosion, caries/ D. All of the above

Last Answer : D. All of the above

A patient has improperly formed DEJ, reduction in size of pulp chamber, chipping and attrition of enamel that would MOSTLY be: A. Fluorosis B. Amelogenesis imperfecta C. Dentinogenesis imperfecta

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What is characteristic feature seen in pyloric stenosis:** A. Erosion of maxillary central incisors B. Vomiting of undigested food C. Loss of appetite D. Weakness

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Last Answer : A. Erosion of maxillary central incisors

An advantage of metal. ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness. B. Overall conservative for tooth structure. C. Ability to watch the appearance of adjacent natural teeth. D. Less laboratory time.

Description : An advantage of metal. ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness. B. Overall conservative for tooth structure. C. Ability to watch the appearance of adjacent natural teeth. D. Less laboratory time.

Last Answer : A. Palatal reduction may be of minimal thickness.

In testing for mobility, which of the following statement is true: a.Heavy pressure must sometimes be used to test mobility. b.Only lateral mobility is significant in diagnosis and treatment of chronic inflammatory periodontal disease. c.Hyper mobility indicates that the tooth supporting structure have been weakened. d.During the periodontal examination each tooth should be tested individually for hyper mobility.

Description : In testing for mobility, which of the following statement is true: a.Heavy pressure must sometimes be used to test mobility. b.Only lateral mobility is significant in diagnosis and ... weakened. d.During the periodontal examination each tooth should be tested individually for hyper mobility.

Last Answer : d.During the periodontal examination each tooth should be tested individually for hyper mobility.

An advantage of metal-ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness B. Overall conservative for tooth structure C. Ability to watch the appearance of adjacent natural teeth D. Less laboratory time

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Last Answer : A. Palatal reduction may be of minimal thickness

The effects of tooth removal in healthy individuals can show as, A. Loss of contacts B. Slight tilting C. Pocket formation (in 2nd mandibular. Molar after 3rd molar horizontal impacted removal) D. TMJ problem E. All of the above

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Last Answer : E. All of the above

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Description : Loss of tooth in mixed dentition affects ******** A. Same quadrant B. The relevant jaw C. The whole mouth

Last Answer : C. The whole mouth

The formation of 'Mushroom rock' in desert region is an example of – (1) Deflation (2) Attrition (3) Abrasion (4) Erosion

Description : The formation of 'Mushroom rock' in desert region is an example of – (1) Deflation (2) Attrition (3) Abrasion (4) Erosion

Last Answer : (3) Abrasion Explanation: The rocks having broad upper part and narrow base resembling an umbrella or mushroom are called mushroom rocks or pedestal rocks. These undercut, mushroomshaped rocks are formed due to abrasive works of wind.

The formation of ‘Mushroom rock’ in desert region is an example of (1) Deflation (2) Attrition (3) Abrasion (4) Erosion

Description : The formation of ‘Mushroom rock’ in desert region is an example of (1) Deflation (2) Attrition (3) Abrasion (4) Erosion

Last Answer : Abrasion

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Last Answer : C. The chemical and physical nature of the tooth

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

18 years old female weighting 52Kg and 163cm tall. On dental examination erosion of teeth on the most of her lingual surfaces is clearly showing. Dietary history revealed a daily rate of 5000 to 7000 Kcal/day. What is the most probable diagnosis? A. Alcoholism B. Drug abuse C. Bulimia D. Excessive smoking E. Diabetic mellitus type I

Description : 18 years old female weighting 52Kg and 163cm tall. On dental examination erosion of teeth on the most of her lingual surfaces is clearly showing. Dietary history revealed a daily rate of 5000 to 7000 ... . Alcoholism B. Drug abuse C. Bulimia D. Excessive smoking E. Diabetic mellitus type I

Last Answer : C. Bulimia

The first step in the treatment of erosion is: A. Pumice and water B. Spray with Na-bicarbonate C. GIC

Description : The first step in the treatment of erosion is: A. Pumice and water B. Spray with Na-bicarbonate C. GIC

Last Answer : A. Pumice and water

What is the advantage of composite over silicate resin: A. Less shrinkage B. Less surface erosion C. Less water absorption D. All of the above

Description : What is the advantage of composite over silicate resin: A. Less shrinkage B. Less surface erosion C. Less water absorption D. All of the above

Last Answer : D. All of the above

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

In a shell and tube heat exchanger, (A) The temperature drops in the two fluids and the wall are proportional to individual resistances (B) The temperature drop is inversely proportional to the resistance across which the drop occurs (C) There is no relationship between temperature drop and resistance (D) The relationship is not generalised

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Last Answer : (A) The temperature drops in the two fluids and the wall are proportional to individual resistances

Which one of the following statements is true for Mohr-Coulomb envelope? (A) Coulomb suggests that the relationship between shear strength and normal stress, is adequately represented by the straight line (B) The generalised Mohr theory suggests that, though the shear stress depends on the normal stress, the relation is not linear (C) Coulomb and Mohr suggest that a definite relationship exists among the principal stress and the angle of internal friction (D) All the above

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Last Answer : Answer: Option D

Generalised conclusion on the basis of a sample is technically known as: (A) Data analysis and interpretation (B) Parameter inference (C) Statistical inference (D) All of the above

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Last Answer : (C) Statistical inference

Gemination is: a. Division of single tooth, twining. b. Fusion of two or more crowns of teeth c. Fusion of two or more roots.

Description : Gemination is: a. Division of single tooth, twining. b. Fusion of two or more crowns of teeth c. Fusion of two or more roots.

Last Answer : a. Division of single tooth, twining.

As far as surgical removal of wisdom teeth is concerned which of the following is true? a- Prophylactic prescription of antibiotic reduces dramatically the chances of infection. b- Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve. c- Prophylactic prescription of dexamethasone will dramatically reduce post operative swelling. d- Inferior dental nerve injury is unlikely since the nerve passes medial to the wisdom tooth root. e- The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

Description : As far as surgical removal of wisdom teeth is concerned which of the following is true? a- Prophylactic prescription of antibiotic reduces dramatically the chances of infection. b- Raising a lingual ... e- The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

Last Answer : b- Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve.

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.

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.

As a result of wrong use of tooth brush the patients MOST probable complaint will be, A. Spontaneous pain or discomfort B. Occasional pain during brushing of the teeth C. Occasional pain during consumption of sweets

Description : As a result of wrong use of tooth brush the patients MOST probable complaint will be, A. Spontaneous pain or discomfort B. Occasional pain during brushing of the teeth C. Occasional pain during consumption of sweets

Last Answer : C. Occasional pain during consumption of sweets

Gracey curette is characterized by, A. The blade and the shank form 90º angle B. Can be used on both sides C. Can be used on any tooth surface D. It is specific for each surface of the tooth. 70o the other options are for universal

Description : Gracey curette is characterized by, A. The blade and the shank form 90º angle B. Can be used on both sides C. Can be used on any tooth surface D. It is specific for each surface of the tooth. 70o the other options are for universal

Last Answer : D. It is specific for each surface of the tooth. 70o the other options are for universal

In the construction of a full veneer gold crown, future recession of gingival tissue can be prevented or at least minimised by, A. Extension of the crown 1 mm under the gingival crevice B. Reproduction of normal tooth incline in the gingival one third of the crown C. Slight over contouring of the tooth in the gingival one fifth of the crown D. Slight under contouring of the tooth in the gingival one fifth of the crown

Description : In the construction of a full veneer gold crown, future recession of gingival tissue can be prevented or at least minimised by, A. Extension of the crown 1 mm under the gingival crevice B. ... of the crown D. Slight under contouring of the tooth in the gingival one fifth of the crown

Last Answer : B. Reproduction of normal tooth incline in the gingival one third of the crown

Following calcium hydroxide pulpotomy, the dentist would expect dentine bridge to form at, A. The exact level of amputation B. Level somewhere below the amputation C. Half way between amputation and apex D. At the apical region of the tooth

Description : Following calcium hydroxide pulpotomy, the dentist would expect dentine bridge to form at, A. The exact level of amputation B. Level somewhere below the amputation C. Half way between amputation and apex D. At the apical region of the tooth

Last Answer : B. Level somewhere below the amputation

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 best storage media for avulsed tooth is, A. Saline B. Milk C. Water D. Saliva

Description : The best storage media for avulsed tooth is, A. Saline B. Milk C. Water D. Saliva

Last Answer : B. Milk

A patient comes to you with medium pain of tooth filled with Composite resin as a result of cold or hot drinks, what will your initial management be, A. Remove the restorative material and start an Endontic treatment B. Remove the restorative material and place a sedative temporary material C. Place a coat of bonding material on the old composite

Description : A patient comes to you with medium pain of tooth filled with Composite resin as a result of cold or hot drinks, what will your initial management be, A. Remove the restorative material and ... material and place a sedative temporary material C. Place a coat of bonding material on the old composite

Last Answer : B. Remove the restorative material and place a sedative temporary material

In preparing a very small proximal amalgam cavity on a molar tooth what would consider, A. Extend the cavity to the gingival margin B. Extend the cavity beyond the contacts areas C. Achieve at least 2mm in dentine D. Extend cavity just beyond dento enamel junction

Description : In preparing a very small proximal amalgam cavity on a molar tooth what would consider, A. Extend the cavity to the gingival margin B. Extend the cavity beyond the contacts areas C. Achieve at least 2mm in dentine D. Extend cavity just beyond dento enamel junction

Last Answer : D. Extend cavity just beyond dento enamel junction

The ideal length of core in the fabrication of crown and core of endodontically treated tooth is, A. 1.5 of crown length B. The length of the crown C. 2/3 tooth/root length D. ½ root length

Description : The ideal length of core in the fabrication of crown and core of endodontically treated tooth is, A. 1.5 of crown length B. The length of the crown C. 2/3 tooth/root length D. ½ root length

Last Answer : C. 2/3 tooth/root length

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

A patient shows a lesion on the tongue adjacent to sharp tooth. You “round off” the sharp area and recall patient after one month to see the lesion turning smaller in size. What would be your next step: A. Keep observing B. Perform an excision biopsy C. Prescribe Kenalog and Orabase

Description : A patient shows a lesion on the tongue adjacent to sharp tooth. You “round off” the sharp area and recall patient after one month to see the lesion turning smaller in size. What would be your next step: A. Keep observing B. Perform an excision biopsy C. Prescribe Kenalog and Orabase

Last Answer : A. Keep observing

The MOST likely factor contributing to tooth eruption is:** A. The growing root B. Bone growth C. Vascular pressure D. The developing periodontal ligament

Description : The MOST likely factor contributing to tooth eruption is:** A. The growing root B. Bone growth C. Vascular pressure D. The developing periodontal ligament

Last Answer : A. The growing root

An endodontic therapy was completed on a tooth with a periapical radiolucency. Marked reduction in size of radiolucency is expected in approximately: A. One year B. 6 months C. 3 months

Description : An endodontic therapy was completed on a tooth with a periapical radiolucency. Marked reduction in size of radiolucency is expected in approximately: A. One year B. 6 months C. 3 months

Last Answer : A. One year

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

How would you treat hyperaemia (hyperaemic tooth):** A. Zinc Oxide and eugenol cement B. Calcium hydroxide C. Corticosteroid paste

Description : How would you treat hyperaemia (hyperaemic tooth):** A. Zinc Oxide and eugenol cement B. Calcium hydroxide C. Corticosteroid paste

Last Answer : A. Zinc Oxide and eugenol cement

What is contraindicated to the use of calcium hydroxide for pulp capping: A. Accidental exposure of pulp B. Carious exposure of pulp in otherwise asymptomatic tooth C. Carious exposure of pulp in tooth that has been painful for weeks

Description : What is contraindicated to the use of calcium hydroxide for pulp capping: A. Accidental exposure of pulp B. Carious exposure of pulp in otherwise asymptomatic tooth C. Carious exposure of pulp in tooth that has been painful for weeks

Last Answer : C. Carious exposure of pulp in tooth that has been painful for weeks

The OPTIMUM crown to root ratio for abutment tooth is:** A. 2:3 B. 1:1

Description : The OPTIMUM crown to root ratio for abutment tooth is:** A. 2:3 B. 1:1

Last Answer : A. 2:3

Which of the following is not a property of Fluoride: A. Crosses placental barrier B. Deposits in bone C. Excretes rapidly by kidney D. Bacteria static E. Produces extrinsic tooth stain

Description : Which of the following is not a property of Fluoride: A. Crosses placental barrier B. Deposits in bone C. Excretes rapidly by kidney D. Bacteria static E. Produces extrinsic tooth stain

Last Answer : E. Produces extrinsic tooth stain

How long would it take to notice significant reduction in radiolucency after finishing a root filling in a tooth with a periapical lesion: A. 6 months B. 1 month C. 3 months

Description : How long would it take to notice significant reduction in radiolucency after finishing a root filling in a tooth with a periapical lesion: A. 6 months B. 1 month C. 3 months

Last Answer : A. 6 months

A cast crown fits on the die but not on the tooth, the discrepancy is about 0.3mm, what would you do: A. Relieve cast from the inside B. Take a new impression and make new crown C. Burnish margins D. Use thick mix of cement

Description : A cast crown fits on the die but not on the tooth, the discrepancy is about 0.3mm, what would you do: A. Relieve cast from the inside B. Take a new impression and make new crown C. Burnish margins D. Use thick mix of cement

Last Answer : B. Take a new impression and make new crown

What control tooth or teeth should be used when testing a suspected pulpally involved tooth: A. Adjacent tooth and contralateral teeth B. Contralateral and opposing teeth C. Opposing and adjacent teeth D. Test only suspected tooth/teeth E. All of the above

Description : What control tooth or teeth should be used when testing a suspected pulpally involved tooth: A. Adjacent tooth and contralateral teeth B. Contralateral and opposing teeth C. Opposing and adjacent teeth D. Test only suspected tooth/teeth E. All of the above

Last Answer : A. Adjacent tooth and contralateral teeth

In a vital pulp therapy, what is the optimum depth for a pin hole in a tooth: A. 4-5mm B. Approximately 2mm C. Less than 2mm D. 1-1.5mm

Description : In a vital pulp therapy, what is the optimum depth for a pin hole in a tooth: A. 4-5mm B. Approximately 2mm C. Less than 2mm D. 1-1.5mm

Last Answer : A. 4-5mm

A lateral incisor labial to the arch needs to be restored in normal alignment with PFM retraction. How will the tooth appear: A. Too wide B. Too short C. To narrow D. To long

Description : A lateral incisor labial to the arch needs to be restored in normal alignment with PFM retraction. How will the tooth appear: A. Too wide B. Too short C. To narrow D. To long

Last Answer : C. To narrow

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

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

Description : 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

Last Answer : E. None of the above