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There are various types of restorations that can be undertaken to repair a tooth. When placing a composite filling acid etch is used to help lock the material to the tooth structure. What does acid etch contain?

a) 10% Phosphoric acid

b) 20-30% Phosphoric acid

c) 30-40% Phosphoric acid

d) 10% Hypochlorousacid

e) 33% Sodium hypochloride

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A bridge is a type of fixed prosthesis that is constructed in a Lab. A type of bridge that requires no preparation of the adjacent teeth is known as what?

a) Cantilever bridge

b) Fixed-fixed bridge

c) Fixed-movable bridge

d) Maryland resin bridge

e) Spring cantilever

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Cavities in teeth can be classified into 5 different types depending on the site of the original caries attack. This is known as Blacks Classification. A mesial surface cavity in an incisor or canine tooth is identified as which classification?

a) Class l

b) Class ll

c) Class lll

d) Class lV

e) Class V

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G.V. Black's Classification of Dental Caries

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When undertaking a restoration of a tooth, the dentist or therapist will need to remove active caries before filling it with a material to replace lost tooth surface. Softened dentine would be removed by which hand instrument before filling?

a) Burnisher

b) Enamel chisel

c) Excavator

d) Mitchells trimmer

e) Tweezers

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During surgical procedures a flap of gingiva is raised with a periosteal elevator in order to gain access to the bone. When suturing the flap the edges of the gingiva need to be held firm. What instrument would be used to hold the flap edges?

a) Austin retractor

b) Bone rongeurs

c) Mitchells trimmer

d) Tissue dissecting forceps

e) Suture scissors

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Before a permenant filling is inserted, the cavity may need to be lined. A lining is an insulating layer of cement that protects the pulp from thermal shock. Which lining material is contraindicated under composite restorations?

a) Calcium hydroxide

b) Glass ionomer

c) Poly carboxylate

d) Zinc oxide and eugenol

e) Zinc phosphate

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Vitality testing is used to establish whether a tooth is alive, dead or dying prior to a root canal treatment. What material would be used to check tooth vitality?

a) Ethyl chloride

b) Flours of sulphur

c) Greenstick compound

d) Transillumination

e) X-ray

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Endodontic treatment aims to save a tooth from extraction when a patient presents with acute infection. Which of the following is not a sign of an acute infection?

a) Pus

b) Pyrexia (raised body temperature)

c) Severe pain

d) Swelling

e) Xerostomia

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Local anaesthetic is administered during dental procedures to prevent pain. The agent in an anaesthetic cartridge that blocks pain is known as?

a) Anaesthetic solution

b) Buffering agent

c) Preservative

d) Saline

e) Vasoconstrictor

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A patient is undergoing a restoration in a lower molar tooth. The cavity is a disto-occlusal and a matrix band is around the tooth. The amalgam is being placed in the cavity. What instrument condenses the material in the tooth?

a) Amalgam carrier

b) Amalgam plugger

c) Burnisher

d) Lateral condenser

e) Wards carver