Endodontic Instrumentation Techniques Quiz

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Questions and Answers

What are the causes of canal blockage?

Dentine shavings compacted into a hardened mass

Packing of pulp tissue to form collagen plug

No irrigation during preparation

All of the above (correct)

How can ledge formation be detected?

When the instrument can no longer be inserted to the full working length

Instrument tip hits against a solid wall with no tactile sensation of binding

Radiograph shows inability of the inserted instrument to reach full working length

All of the above (correct)

What is the most common cause of instrument separation?

Placing exaggerated bends on instruments in curved canals

Using stressed instruments

Excessive rotation of the instrument in a canal after binding (correct)

Forcing a file down a canal

What is the recommended correction for canal blockage?

Recapitulation using copious irrigation Signup and view all the answers

What is the purpose of using patency files in root canal shaping?

To maintain patency of the canal Signup and view all the answers

What are the consequences of under-extended access cavity preparation?

Both a and b Signup and view all the answers

What is the most common difficulty encountered in preparing small, curved canals?

Large sized root canal instrument straightens within the canal Signup and view all the answers

What is the recommended prevention for transportation in root canal shaping?

All of the above Signup and view all the answers

Which technique involves using an initial file followed by 3-4 successive files to the full working length to create an apical stop?

Standarized technique Signup and view all the answers

What is the purpose of a patency file?

To check patency of the canal and remove accumulated debris Signup and view all the answers

What is the motion used in the standarized technique for shaping the root canal?

Circumferential filing Signup and view all the answers

In which technique is the apical coronal preparation achieved from coronal to apical?

From coronal to apical. MODIFICATION Signup and view all the answers

What is the minimum degree of motion for the master apical file (MAF) in the apical coronal technique?

$30-60°$ in #40 Signup and view all the answers

What is the purpose of the patency file in root canal shaping?

To remove accumulated debris and maintain working length Signup and view all the answers

In the step back technique, what is the purpose of the patency file?

To check patency of the canal and remove accumulated debris Signup and view all the answers

What type of file is used as the patency file?

K-file Signup and view all the answers

Which technique involves a combination of apical coronal and coronal apical preparation?

Combination (Hybrid) technique Signup and view all the answers

What is the purpose of the initial apical file (IAF) in the apical coronal technique?

To establish the initial apical size Signup and view all the answers

What are the advantages of the step back technique in endodontic instrumentation?

Shaping apical 1/3 with small flexible files and maintaining proper resistance form Signup and view all the answers

What is a disadvantage of the step back technique in endodontic instrumentation?

Minimal effect of irrigation at initial stages Signup and view all the answers

What are the advantages of the crown-down technique in endodontic instrumentation?

Elimination of microbes, better irrigant penetration, and less extruded debris Signup and view all the answers

What is the purpose of the Balanced Force motion technique in endodontic instrumentation?

To prevent file movement and maintain centralization in the canal Signup and view all the answers

What is a phase involved in the mechanical preparation of radicular access?

Coronal flare Signup and view all the answers

What is the aim of anti-curvature filling in endodontic instrumentation?

To apply pressure away from the dangerous zone in the root canal Signup and view all the answers

What are the advantages of Nickel Titanium (NiTi) endodontic instruments?

Quick canal enlargement and less time for preparation Signup and view all the answers

What are the guidelines for using rotary NiTi instruments in endodontic instrumentation?

Passive technique, detecting difficult canal anatomy, and avoiding overuse of files Signup and view all the answers

What is the purpose of power-assisted root canal instrumentation in endodontics?

To facilitate better flushing and cleaning of the canal during instrumentation Signup and view all the answers

What is acoustic streaming in endodontic instrumentation?

A method for better flushing and cleaning of the canal during instrumentation Signup and view all the answers

Study Notes

Endodontic Instrumentation Techniques and Considerations

Step back and crown-down techniques are commonly used in endodontic instrumentation
Advantages of step back technique include shaping apical 1/3 with small flexible files and maintaining proper resistance form
Disadvantages of step back technique include minimal effect of irrigation at initial stages and high stress on the file
Crown-down technique advantages include elimination of microbes, better irrigant penetration, and less extruded debris
Hybrid preparation combines step back and step down techniques
Mechanical preparation of radicular access involves four phases: coronal flare, canal length negotiation, canal enlargement, and final shaping
Balanced Force motion is a technique to prevent file movement and maintain centralization in the canal
Anti-curvature filling involves applying pressure away from the dangerous zone in the root canal
Power-assisted root canal instrumentation includes low-speed rotary instruments and engine-driven reciprocating instruments
Acoustic streaming is a method for better flushing and cleaning of the canal during instrumentation
Nickel Titanium (NiTi) endodontic instruments offer advantages such as quick canal enlargement and less time for preparation
Guidelines for using rotary NiTi instruments include passive technique, detecting difficult canal anatomy, and avoiding overuse of files

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Description

Test your knowledge of endodontic instrumentation techniques and considerations with this quiz. Explore step back, crown-down, and hybrid preparation techniques, as well as Balanced Force motion, power-assisted instrumentation, and the use of Nickel Titanium instruments. Gain insights into the advantages and disadvantages of different techniques and learn about important considerations for successful root canal treatment.