With dentin bonding agent, you apply: A. First acid etching to dentine and then bonding agent B. Bonding agent directly to dentine C. Chelating agent (EDTA) and bonding agent

With dentin bonding agent, you apply:
A. First acid etching to dentine and then bonding agent
B. Bonding agent directly to dentine
C. Chelating agent (EDTA) and bonding agent
by

1 Answer

Answer :

A. First acid etching to dentine and then bonding agent
by

Related questions

Etching a hybrid glass ionomer-composite a. is necessary for composite resin bonding b. is not necessary for composite resin bonding c. is necessary for adding a glass ionomer cement for repair d. is not necessary for adding a glass ionomer cement for repair e. a 3-5 second etch with 10% phosphoric acid is recommended

Description : Etching a hybrid glass ionomer-composite a. is necessary for composite resin bonding b. is not necessary for composite resin bonding c. is necessary for adding a glass ionomer cement for repair ... glass ionomer cement for repair e. a 3-5 second etch with 10% phosphoric acid is recommended

Last Answer : b. is not necessary for composite resin bonding

What is the main function of EDTA in endodontics? A. Decalcification of dentine B. Cleaning debris from root canal

Description : What is the main function of EDTA in endodontics? A. Decalcification of dentine B. Cleaning debris from root canal

Last Answer : A. Decalcification of dentine

In 3rd generation dentin bonding agents, HEMA (Hydroxyethylmethacrylate) is 1. a hydrophilic monomer that wets the dentinal surface 2. a hydrophilic resin that forms a ”hybrid” layer by chemically reacting the intertubular dentin. 3. a hydrophilic monomer that alters collagen to promote cross linking of collagen to dentin. 4. a bifunctional molecule resin that copolymerizes to bis-GMA resins. a. 1,2 b. 1,4 c. 2,3 d. 1,3 e. 3,4

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Last Answer : b. 1,4

Acid conditioning of enamel and eroded dentine: A. Provides an none traumatic, conservative clinical approach to the bonding of restorative material B. Is a traumatic approach to bonding materials C. Is not a safe and simple method of bonding D. Bonding fails to produce a highly significant retention and good marginal integrity and clinical durability E. None of the above

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Last Answer : A. Provides an none traumatic, conservative clinical approach to the bonding of restorative material

While you finish a class I cavity, the enamel is sound but you notice a brown line in the dentine and on the Dento-enamel junction, what is your response, A. You leave it and complete the final restoration B. You extend your preparation and clean it C. You apply a cover of varnish

Description : While you finish a class I cavity, the enamel is sound but you notice a brown line in the dentine and on the Dento-enamel junction, what is your response, A. You leave it and complete the final restoration B. You extend your preparation and clean it C. You apply a cover of varnish

Last Answer : B. You extend your preparation and clean it

The effectiveness of the acid etch is dependent on which of the following factors: A. Material must be used to clean the surface of the tooth prior to etching B. The effectiveness of the itchant C. The chemical and physical nature of the tooth D. The area and surface of the enamel to be itched

Description : The effectiveness of the acid etch is dependent on which of the following factors: A. Material must be used to clean the surface of the tooth prior to etching B. The effectiveness of the itchant C. The chemical and physical nature of the tooth D. The area and surface of the enamel to be itched

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

How can you improve the adhesion of a fissure sealant: A. Acid etching technique

Description : How can you improve the adhesion of a fissure sealant: A. Acid etching technique

Last Answer : A. Acid etching technique

Optimum penetration of a .024 or .031 inch self-threading pin in dentin is . . . a. 0.5 mm b. 1.0 mm c. 2.0 mm d. 2.5 mm e. 3.0 mm

Description : Optimum penetration of a .024 or .031 inch self-threading pin in dentin is . . . a. 0.5 mm b. 1.0 mm c. 2.0 mm d. 2.5 mm e. 3.0 mm

Last Answer : c. 2.0 mm

The following chelating agent should not be used systemically to treat acute iron poisoning in a child: A. Desferrioxamine B. Calcium edetate C. Dimercaprol D. Calcium disodium diethylene triamine penta acetic acid

Description : The following chelating agent should not be used systemically to treat acute iron poisoning in a child: A. Desferrioxamine B. Calcium edetate C. Dimercaprol D. Calcium disodium diethylene triamine penta acetic acid

Last Answer : C. Dimercaprol

Etching techniques are used always to: A. minimise the leakage of restorations B. for aesthetic considerations

Description : Etching techniques are used always to: A. minimise the leakage of restorations B. for aesthetic considerations

Last Answer : A. minimise the leakage of restorations

What is Dimethyl sulfoxide used for? a. A gelling agent b. Cryoprotectant c. Chelating agent d. An Alkylating agent

Description : What is Dimethyl sulfoxide used for? a. A gelling agent b. Cryoprotectant c. Chelating agent d. An Alkylating agent

Last Answer : b. Cryoprotectant

for dental caries to progress in dentine, A. the dentine must contain soluble collagen B. enamel must contain glycoproteins C. diet must contain simple carbohydrate D. diet must contain polysaccharides E. pulp must contain complement

Description : for dental caries to progress in dentine, A. the dentine must contain soluble collagen B. enamel must contain glycoproteins C. diet must contain simple carbohydrate D. diet must contain polysaccharides E. pulp must contain complement

Last Answer : C. diet must contain simple carbohydrate

After the initial development stage and in the absence of pathology, the size of the pulp chamber has been reduced by, A. Deposition of primary dentine B. Deposition of secondary dentine C. Reparative dentine D. Pulp fibrosis E. Deposition of reparative dentine

Description : After the initial development stage and in the absence of pathology, the size of the pulp chamber has been reduced by, A. Deposition of primary dentine B. Deposition of secondary dentine C. Reparative dentine D. Pulp fibrosis E. Deposition of reparative dentine

Last Answer : B. Deposition of secondary dentine

Two central incisors on a radiograph are showing with what looks like eye drop radiolucency. You decided to start endodontic treatment on these teeth but when you tried to open access to the root canal you find clearly closed orifices with what look like secondary dentine. What is your initial management? A. Leave as it and start a permanent restoration. B. Start systemic antibiotic C. Try to ream and file canals

Description : Two central incisors on a radiograph are showing with what looks like eye drop radiolucency. You decided to start endodontic treatment on these teeth but when you tried to open access to the root ... and start a permanent restoration. B. Start systemic antibiotic C. Try to ream and file canals

Last Answer : C. Try to ream and file canals

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

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

Two conditions of enamel facilitate the post eruptive uptake of fluoride: A. Hyper mineralisation and surface dentine B. Surface demineralisation and hypo mineralisation C. Dental fluorosis and enamel opacities

Description : Two conditions of enamel facilitate the post eruptive uptake of fluoride: A. Hyper mineralisation and surface dentine B. Surface demineralisation and hypo mineralisation C. Dental fluorosis and enamel opacities

Last Answer : B. Surface demineralisation and hypo mineralisation

The surface of enamel rod prisms in permanent teeth is: A. Perpendicular to the outer surface of the tooth B. Parallel to the outer surface of the tooth C. Parallel to enamel contour D. Parallel to enamel-dentine contour

Description : The surface of enamel rod prisms in permanent teeth is: A. Perpendicular to the outer surface of the tooth B. Parallel to the outer surface of the tooth C. Parallel to enamel contour D. Parallel to enamel-dentine contour

Last Answer : A. Perpendicular to the outer surface of the tooth

Which of the following is a radiographic feature of dentino-genesis imperfecta: A. Small pulp chambers and root canals, normal enamel B. Enamel is missing but dentine formation is normal C. Enamel and dentine show disturbances D. Pulp is normal but dentine is abnormal

Description : Which of the following is a radiographic feature of dentino-genesis imperfecta: A. Small pulp chambers and root canals, normal enamel B. Enamel is missing but dentine formation is normal C. Enamel and dentine show disturbances D. Pulp is normal but dentine is abnormal

Last Answer : A. Small pulp chambers and root canals, normal enamel

Which is the only dental tissue that loses its formative cells as it matures: A. Enamel B. Dentine C. Pulp D. Cementum

Description : Which is the only dental tissue that loses its formative cells as it matures: A. Enamel B. Dentine C. Pulp D. Cementum

Last Answer : A. Enamel

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

Calculus attaches to teeth surfaces by: A. Acquired pellicle B. Interlocking to the crystals of the tooth C. Penetrated into enamel and dentine D. Mechanical interlocking E. All of the above

Description : Calculus attaches to teeth surfaces by: A. Acquired pellicle B. Interlocking to the crystals of the tooth C. Penetrated into enamel and dentine D. Mechanical interlocking E. All of the above

Last Answer : E. All of the above

The gingival portion of natural teeth differs in colour from the incisal portion because the : A. Lighting angle is different B. Gingival and incisal portions have different fluorescent qualities C. Gingival area has a dentine background D. Incident light is different

Description : The gingival portion of natural teeth differs in colour from the incisal portion because the : A. Lighting angle is different B. Gingival and incisal portions have different fluorescent qualities C. Gingival area has a dentine background D. Incident light is different

Last Answer : C. Gingival area has a dentine background

The minimal labial tooth reduction for satisfactory aesthetics with porcelain fused to metal crown is, A. 1mm B. The full thickness of enamel C. 1.5 mm D. 2.5mm E. One third of the dentine thickness

Description : The minimal labial tooth reduction for satisfactory aesthetics with porcelain fused to metal crown is, A. 1mm B. The full thickness of enamel C. 1.5 mm D. 2.5mm E. One third of the dentine thickness

Last Answer : C. 1.5 mm

On applying hypertonic fluid on the dentine, the transmission of fluid through tubules will be: A. From inside to outside B. From outside to insid

Description : On applying hypertonic fluid on the dentine, the transmission of fluid through tubules will be: A. From inside to outside B. From outside to insid

Last Answer : A. From inside to outside

How do you treat dentine before applying GIC A. Conditioner B. Pumice & water

Description : How do you treat dentine before applying GIC A. Conditioner B. Pumice & water

Last Answer : A. Conditioner

Using fluoride in the root surface caries is to protect, A. Enamel B. Dentine and cementum C. Cuticle

Description : Using fluoride in the root surface caries is to protect, A. Enamel B. Dentine and cementum C. Cuticle

Last Answer : B. Dentine and cementum

For dental caries to progress in dentine, A. The dentine must contain soluble collagen B. Enamel must contain glycoproteins C. Diet must contain simple carbohydrate D. Diet must contain polysaccharides E. Pulp must contain complement

Description : For dental caries to progress in dentine, A. The dentine must contain soluble collagen B. Enamel must contain glycoproteins C. Diet must contain simple carbohydrate D. Diet must contain polysaccharides E. Pulp must contain complement

Last Answer : C. Diet must contain simple carbohydrate

Which of the following would be ONE possible indication for indirect pulp capping?*** A. Where any further excavation of dentine would result in pulp exposure. B. Removal of caries has exposed the pulp C. When carious lesion has just penetrated DEJ

Description : Which of the following would be ONE possible indication for indirect pulp capping?*** A. Where any further excavation of dentine would result in pulp exposure. B. Removal of caries has exposed the pulp C. When carious lesion has just penetrated DEJ

Last Answer : A. Where any further excavation of dentine would result in pulp exposure.

What is the sequence from superficial to the deepest in dentine caries?* A. Zone of bacterial penetration, demineralisation, sclerosis, reparative dentine B. Zone of bacterial penetration, reparative dentine, demineralisation, sclerosis. C. Zone of bacterial penetration, sclerosis, reparative dentine, demineralisation.

Description : What is the sequence from superficial to the deepest in dentine caries?* A. Zone of bacterial penetration, demineralisation, sclerosis, reparative dentine B. Zone of bacterial ... demineralisation, sclerosis. C. Zone of bacterial penetration, sclerosis, reparative dentine, demineralisation.

Last Answer : A. Zone of bacterial penetration, demineralisation, sclerosis, reparative dentine

The junction between primary and secondary dentine is,*** A. A reversal line B. Sharp curvature C. A resting line D. A reduction in the number of tubules

Description : The junction between primary and secondary dentine is,*** A. A reversal line B. Sharp curvature C. A resting line D. A reduction in the number of tubules

Last Answer : B. Sharp curvature

The percentage of total dentine surface / dentinal tubules 0.5mm away from pulp is,** A. 20% B. 50%

Description : The percentage of total dentine surface / dentinal tubules 0.5mm away from pulp is,** A. 20% B. 50%

Last Answer : B. 50%

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

Description : 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

Last Answer : A. Avoid buccal pulp horn

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

Why do you itch enamel for composite restorations: A. To increase surface area B. To decrease surface area C. Does not really change the surface area D. Increase the chemical bonding capability E. Decrease the chemical bonding capability

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Last Answer : A. To increase surface area

In regard to the enamel surface: A. It is a perfect substance for bonding B. It does not conform to the bonding requirements C. It is the most inorganic, rough part D. It is free from contamination and roughness E. None of the above

Description : In regard to the enamel surface: A. It is a perfect substance for bonding B. It does not conform to the bonding requirements C. It is the most inorganic, rough part D. It is free from contamination and roughness E. None of the above

Last Answer : B. It does not conform to the bonding requirements

The termination of heparin activity by protamine sulfate is due to (a) A chelating action (b) The inhibition of gastrointestinal absorption of heparin (c) The displacement of heparin-plasma protein binding (d) An acid-base interaction (e) The prothrombin-like activity of protamine

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.What is the percentage of the echant agent used with composit resin restorations? a . 37% of phosphoric acid in water. b. 15% c. 18.5% d. 41%

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Last Answer : a . 37% of phosphoric acid in water.

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Last Answer : c. 10 - 15% carbamide peroxide

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Last Answer : No, it is a chemical change. The glass is changed into newsubstances where it is etched.

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Last Answer : C. Diffusion hypoxia at the end of the case due to slow solubility of the agent in blood

Which local anaesthetic agent is preferred for a confirmed hypersensitive patient: A. 3% prilocaine with felypressin B. Mepivacaine 3% without vasoconstrictor **

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Last Answer : B. Mepivacaine 3% without vasoconstrictor **

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What kind of material is dentin ?

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Last Answer : Dentin is a hard material.