28 Questions
What are the causes of canal blockage?
All of the above
How can ledge formation be detected?
All of the above
What is the most common cause of instrument separation?
Excessive rotation of the instrument in a canal after binding
What is the recommended correction for canal blockage?
Recapitulation using copious irrigation
What is the purpose of using patency files in root canal shaping?
To maintain patency of the canal
What are the consequences of under-extended access cavity preparation?
Both a and b
What is the most common difficulty encountered in preparing small, curved canals?
Large sized root canal instrument straightens within the canal
What is the recommended prevention for transportation in root canal shaping?
All of the above
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
What is the purpose of a patency file?
To check patency of the canal and remove accumulated debris
What is the motion used in the standarized technique for shaping the root canal?
Circumferential filing
In which technique is the apical coronal preparation achieved from coronal to apical?
From coronal to apical. MODIFICATION
What is the minimum degree of motion for the master apical file (MAF) in the apical coronal technique?
$30-60°$ in #40
What is the purpose of the patency file in root canal shaping?
To remove accumulated debris and maintain working length
In the step back technique, what is the purpose of the patency file?
To check patency of the canal and remove accumulated debris
What type of file is used as the patency file?
K-file
Which technique involves a combination of apical coronal and coronal apical preparation?
Combination (Hybrid) technique
What is the purpose of the initial apical file (IAF) in the apical coronal technique?
To establish the initial apical size
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
What is a disadvantage of the step back technique in endodontic instrumentation?
Minimal effect of irrigation at initial stages
What are the advantages of the crown-down technique in endodontic instrumentation?
Elimination of microbes, better irrigant penetration, and less extruded debris
What is the purpose of the Balanced Force motion technique in endodontic instrumentation?
To prevent file movement and maintain centralization in the canal
What is a phase involved in the mechanical preparation of radicular access?
Coronal flare
What is the aim of anti-curvature filling in endodontic instrumentation?
To apply pressure away from the dangerous zone in the root canal
What are the advantages of Nickel Titanium (NiTi) endodontic instruments?
Quick canal enlargement and less time for preparation
What are the guidelines for using rotary NiTi instruments in endodontic instrumentation?
Passive technique, detecting difficult canal anatomy, and avoiding overuse of files
What is the purpose of power-assisted root canal instrumentation in endodontics?
To facilitate better flushing and cleaning of the canal during instrumentation
What is acoustic streaming in endodontic instrumentation?
A method for better flushing and cleaning of the canal during instrumentation
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
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.
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