Dental Rotary Instruments Quiz

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What does cariology primarily deal with?

Diagnosis and treatment of dental caries (correct)

Evaluation of tooth sensitivity

Study of gum diseases

Management of oral infections

According to the acidogenic theory, what are the two stages of dental decay?

Proteolysis of organic components; Demineralization of inorganic substances

Lysis of enamel lamellae or rod sheath; Softening of enamel and dentin

Formation of Streptococcus mutans; Presence of Lactobacillus acidophilus

Decalcification of enamel and dentin; Dissolution of softened residue of enamel and dentin (correct)

Which microorganism is associated with enamel caries?

Lactobacillus acidophilus

Streptococcus mutans (correct)

Cemental caries

Actinomyces viscosus

What is the process of formation of dental caries known as?

Cariogenesis Signup and view all the answers

What is the function of a rotary bur?

To remove tooth structure Signup and view all the answers

At what speed range does a medium speed handpiece operate?

12,000 - 200,000 rpm Signup and view all the answers

Which part of a bur is used for the initial entry to the tooth?

Shank Signup and view all the answers

What does the rake face of a bur blade refer to?

The surface of the bur blade on the leading edge Signup and view all the answers

What is the angle formed by the clearance face and rake face of a bur blade called?

Clearance angle Signup and view all the answers

When is the runout dynamic test increased?

When the bur is bent Signup and view all the answers

What is the purpose of beveling the enamel margins for composite?

To sharpen line angles and define walls Signup and view all the answers

Which instrument is commonly used for gold foil?

Straight fissure Signup and view all the answers

What is the purpose of using chlorhexidine during cavity debridement?

To ensure all debris is removed from the preparation Signup and view all the answers

What defines the working end of a hand-held instrument?

Blade (cutting instrument) Signup and view all the answers

What is the main function of cavity varnish?

Reducing microleakage and post operative sensitivity Signup and view all the answers

What is a disadvantage of using cavity varnish?

Dissolves in a matter of days or weeks Signup and view all the answers

When is flowable resin used as a base?

When remaining dentin thickness is 0.5 - 2mm Signup and view all the answers

Dental Rotary Instruments Quiz

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Questions and Answers

What does cariology primarily deal with?

According to the acidogenic theory, what are the two stages of dental decay?

Which microorganism is associated with enamel caries?

What is the process of formation of dental caries known as?

What is the function of a rotary bur?

At what speed range does a medium speed handpiece operate?

Which part of a bur is used for the initial entry to the tooth?

What does the rake face of a bur blade refer to?

What is the angle formed by the clearance face and rake face of a bur blade called?

When is the runout dynamic test increased?

What is the purpose of beveling the enamel margins for composite?

Which instrument is commonly used for gold foil?

What is the purpose of using chlorhexidine during cavity debridement?

What defines the working end of a hand-held instrument?

What is the main function of cavity varnish?

What is a disadvantage of using cavity varnish?

When is flowable resin used as a base?

What is a notable property of zinc oxide eugenol?

Which type of glass ionomer cement is used for pits and fissure sealant?

What substance has a high pH compared to CaOh when unset?

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