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Questions and Answers
The ultimate objective of the root canal therapy is the:
The ultimate objective of the root canal therapy is the:
- Removing of all old obturation contents
- Three-dimensional hermetic obturation (correct)
- Irrigation with as many irrigants as possible
- Devitalisation of the pulp
The purpose of obturation is:
The purpose of obturation is:
- To be able to see good radiological image of the canal/s
- To place powerful antibiotic or corticosteroid inside to disinfect the area
- To seal all 'portals of exit' to impede any sort of communication between the endodontium and periodontium (correct)
- To fill the canals and cavum pulpae in order to have a stable base for the future restoration
Most endodontic failures are related to:
Most endodontic failures are related to:
- Not properly made X-ray trough parallel technique
- Not using Ni-Ti machine driven instruments
- Incomplete obturation of the endodontium (correct)
- Using a needle with a lateral opening for the irrigating protocol
There is a 'hollow tube theory,' according to which:
There is a 'hollow tube theory,' according to which:
'Anachoresis' in endodontics is concerning to:
'Anachoresis' in endodontics is concerning to:
Fluids that accumulate within empty spaces are rapidly colonized by bacteria which reach these spaces by means of a phenomenon of:
Fluids that accumulate within empty spaces are rapidly colonized by bacteria which reach these spaces by means of a phenomenon of:
The practice of Endodontics based on chemotherapy, antimicrobial agents, and mummifiers:
The practice of Endodontics based on chemotherapy, antimicrobial agents, and mummifiers:
According to early authors there are fundamental principles for the success of endodontic therapy and the elimination of periapical inflammation. They are:
According to early authors there are fundamental principles for the success of endodontic therapy and the elimination of periapical inflammation. They are:
The use of medicated pastes to sterilize and seal the root canals must therefore now be considered:
The use of medicated pastes to sterilize and seal the root canals must therefore now be considered:
Mark the odd one out: Requirements for the ideal root canal filling material are:
Mark the odd one out: Requirements for the ideal root canal filling material are:
Mark the odd one out: Requirements for the ideal root canal filling material are to:
Mark the odd one out: Requirements for the ideal root canal filling material are to:
Pastes as an obturating material in endodontics are:
Pastes as an obturating material in endodontics are:
Biologically, it would be desirable to fill the entire canal with:
Biologically, it would be desirable to fill the entire canal with:
The cement or 'sealer' must be used in minimal amounts, since it:
The cement or 'sealer' must be used in minimal amounts, since it:
The weakest part of the obturation of a root canal is:
The weakest part of the obturation of a root canal is:
Mark the odd one out: Cements for obturation of root canals must:
Mark the odd one out: Cements for obturation of root canals must:
A semi-solid material for obturation of root canals is:
A semi-solid material for obturation of root canals is:
Once the gutta-percha is....................., it can be compacted against the canal walls in such a way as to eliminate and collapse any voids present in commercial gutta-percha:
Once the gutta-percha is....................., it can be compacted against the canal walls in such a way as to eliminate and collapse any voids present in commercial gutta-percha:
Primarily constituted of zinc oxide, gutta-percha is in practice a..................material:
Primarily constituted of zinc oxide, gutta-percha is in practice a..................material:
Gutta-percha is readily sterilizable with:
Gutta-percha is readily sterilizable with:
Flashcards
What's the ultimate goal of root canal therapy?
What's the ultimate goal of root canal therapy?
The ultimate goal of root canal therapy is to completely seal the root canal system to prevent communication between the inside of the tooth and the surrounding tissues.
What is obturation?
What is obturation?
Obturation refers to the process of filling the root canal system with a material to seal it completely.
Why is incomplete obturation a problem?
Why is incomplete obturation a problem?
Incomplete obturation is a major cause of endodontic treatment failure as it leaves pathways for bacteria and fluids to enter the root canal system.
What is the "hollow tube theory"?
What is the "hollow tube theory"?
The "hollow tube theory" states that any empty space within a living organism will quickly fill with body fluids.
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What is anachoresis in endodontics?
What is anachoresis in endodontics?
Anachoresis is the rapid colonization of empty spaces within the root canal by bacteria. These bacteria quickly multiply in the space.
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How do bacteria reach the empty spaces in the root canal?
How do bacteria reach the empty spaces in the root canal?
Bacteria reach the empty spaces within the root canal through the process of anachoresis.
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Is using only medication to sterilize the root canal still considered effective?
Is using only medication to sterilize the root canal still considered effective?
The practice of using only medication to sterilize and treat the root canal is outdated and not considered effective.
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What are the fundamental principles of root canal therapy?
What are the fundamental principles of root canal therapy?
The three fundamental principles for successful root canal therapy are: 1) enlarging the canal, 2) cleaning it thoroughly, and 3) filling it completely.
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Is using medicinal pastes to sterilize and seal the root canal still a modern practice?
Is using medicinal pastes to sterilize and seal the root canal still a modern practice?
The use of medicinal pastes to sterilize and seal the root canal is no longer considered a modern approach.
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What is NOT a requirement for an ideal root canal filling material?
What is NOT a requirement for an ideal root canal filling material?
Sterilizing the root canal is not a requirement for the ideal root canal filling material.
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What is NOT a requirement for an ideal root canal filling material?
What is NOT a requirement for an ideal root canal filling material?
Conduction of thermal changes is not a requirement for an ideal root canal filling material.
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What can pastes be used for in endodontics?
What can pastes be used for in endodontics?
In endodontics, pastes can be used to fill the entire root canal system.
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What type of material is ideal for filling the root canal?
What type of material is ideal for filling the root canal?
Filling the entire root canal system with a solid or semi-solid material is ideal from a biological perspective.
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What is the purpose of cement in obturation?
What is the purpose of cement in obturation?
The cement or sealer used in obturation is applied in minimal amounts to improve the fit of the gutta-percha against the canal walls.
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What is the weakest part of root canal obturation?
What is the weakest part of root canal obturation?
The weakest part of a root canal obturation is the cement used to seal the filling material.
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What is NOT recommended for obturation of root canals?
What is NOT recommended for obturation of root canals?
Using cement as the only filling material for the root canal is not recommended.
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What is a semi-solid material used for obturation?
What is a semi-solid material used for obturation?
Gutta-percha is a semi-solid material used for obturating root canals.
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How can gutta-percha be used to create a tight seal?
How can gutta-percha be used to create a tight seal?
When softened by heat, gutta-percha can be compacted against the canal walls, removing any voids and creating a tight seal.
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What is the resorption property of gutta-percha?
What is the resorption property of gutta-percha?
Gutta-percha, primarily composed of zinc oxide, is considered a non-resorbable material in practice.
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How can gutta-percha be sterilized?
How can gutta-percha be sterilized?
Gutta-percha can be easily sterilized by immersing it in 5.25% sodium hypochlorite solution for 60 seconds.
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Root Canal Obturation Overview
- The ultimate goal of root canal therapy is three-dimensional hermetic obturation.
- Key purpose of obturation is to seal all "portals of exit" to prevent communication between the endodontium and periodontium.
Endodontic Failures
- Most endodontic failures occur due to incomplete obturation of the endodontium.
- Techniques such as proper X-ray use and tool selection significantly affect treatment success.
Hollow Tube Theory
- This theory posits that empty spaces in a living organism fill with tissue fluids rapidly.
- Achieving better seal relies on properly obturating lateral canals surrounding the main canal.
Anachoresis in Endodontics
- Anachoresis describes the rapid colonization of fluids in empty canal spaces by bacteria.
- Endodontic files' ability to reach physiological apex is essential for proper treatment.
Treatment Practices
- Use of chemotherapy, antimicrobial agents, and mummification methods are considered out-dated practices.
- Early authors emphasize enlargement, cleaning, and filling as critical for successful endodontic therapy.
Medicated Pastes and Their Usage
- Use of medicated pastes for sterilization and sealing root canals is viewed as anachronistic.
- Ideal root canal filling materials should not sterilize the canal but be bacteriostatic and non-irritating.
Requirements for Filling Materials
- Ideal materials must be easily manipulated, sterile, and removable if necessary.
- Gutta-percha is identified as a semi-solid material suitable for filling entire canals.
Properties of Gutta-Percha
- Gutta-percha, primarily zinc oxide, is non-resorbable and can be sterilized efficiently.
- Softening by heat allows for optimal compaction against canal walls to eliminate voids.
Role of Sealers
- Sealers are used in minimal amounts to improve gutta-percha adaptation and seal the canal.
- The weakest link in obturation is identified as the cement, rather than gutta-percha itself.
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