MCQs 216 Endodontic 3dd Dr.Prom Phanarith 1st 2019

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  • 1/216 Questions

    Contraindication of direct pulp capping:

    • Excess bleeding at the exposure site (uncontrolled bleeding).
    • Deep caries
    • Pain by cold
    • Pain by hot
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Endodontics Quizzes & Trivia
About This Quiz

This quiz, titled 'MCQs 216 Endodontic 3DD Dr. Prom Phanarith 1st 2019', covers key aspects of endodontic treatments, including rubber dam usage, pulp capping contraindications, and clinical signs of hyperplastic pulpitis.

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  • 2. 

    Why would need an endodontic procedure :

    • Remove the inflamed or infected pulp and the tooth continues to function again

    • Reduce the pain

    • Reduce the swelling

    • Root fracture

    Correct Answer
    A. Remove the inflamed or infected pulp and the tooth continues to function again
    Explanation
    An endodontic procedure is needed to remove the inflamed or infected pulp because the pulp contains nerves and blood vessels that can become infected or inflamed due to deep decay, a cracked tooth, or repeated dental procedures. If left untreated, the infection or inflammation can cause severe pain, swelling, and even lead to the loss of the tooth. By removing the infected or inflamed pulp, the tooth can be saved and continue to function properly.

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  • 3. 

    Access cavity of maxillary first premolar is :

    • Oval is wider buccal-palatal

    • Oval is wider mesial-distal

    • Triangular with the base toward the border libre and apex toward the distal

    • Triangular with the base toward the border libre and apex toward the mesial

    Correct Answer
    A. Oval is wider buccal-palatal
    Explanation
    The access cavity of a maxillary first premolar is oval and wider buccal-palatal. This means that the shape of the access cavity is elongated in the buccal-palatal direction, with the widest part of the cavity being from the buccal to the palatal surface. This shape allows for better visualization and access to the pulp chamber and canals of the tooth during root canal treatment.

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  • 4. 

    Average age of eruption for mandibular first molar is:

    • 6-7 years

    • 8-9 years

    • 9-10 years

    • 10-11 years

    Correct Answer
    A. 6-7 years
    Explanation
    The average age of eruption for the mandibular first molar is 6-7 years. This means that most children will have this tooth erupt between the ages of 6 and 7. It is important to note that this is an average, so some children may have their tooth erupt slightly earlier or later. However, 6-7 years is the typical age range for eruption of the mandibular first molar.

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  • 5. 

    Average age of eruption for maxillary canine is:

    • 11-12 years

    • 6-7 years

    • 7-8 years

    • 14-15 years

    Correct Answer
    A. 11-12 years
    Explanation
    The average age of eruption for the maxillary canine is 11-12 years. This means that most individuals will have their maxillary canine teeth erupt between the ages of 11 and 12.

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  • 6. 

    Function of plugger :

    • Condensing the gutta-percha vertical

    • To enlarge the canal

    • To absorb any moisture in the canal

    • Condensing the gutta-percha lateral.

    Correct Answer
    A. Condensing the gutta-percha vertical
    Explanation
    The function of a plugger is to condense the gutta-percha vertically. This means that the plugger is used to compact and compress the gutta-percha material in a vertical direction, ensuring a tight and sealed filling of the canal. This helps to effectively seal the root canal and prevent any leakage or reinfection.

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  • 7. 

    Mobility tests in endodontic grade II is :

    • Within 1mm of horizontal movement

    • Within 2mm of horizontal movement

    • Within 3mm of horizontal movement

    • Within 4mm of horizontal movement

    Correct Answer
    A. Within 1mm of horizontal movement
    Explanation
    Mobility tests in endodontic grade II refers to the amount of horizontal movement that a tooth exhibits. A grade II mobility indicates that the tooth can move within 1mm horizontally. This means that there is a slight mobility or looseness in the tooth, but it is within the normal range. It is important to assess the mobility of a tooth in order to determine its stability and health.

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  • 8. 

    Contraindication of rubber dam:

    • All are corrects

    • Recently erupted tooth

    • Grossly carious teeth

    • Patiens small mouth

    Correct Answer
    A. All are corrects
    Explanation
    The contraindications of using a rubber dam include recently erupted teeth, grossly carious teeth, and patients with a small mouth. Using a rubber dam on recently erupted teeth can cause discomfort and potential damage. Grossly carious teeth may not provide a proper seal for the rubber dam, reducing its effectiveness. Patients with a small mouth may find it difficult to tolerate the placement of a rubber dam, causing discomfort and hindering the dental procedure.

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  • 9. 

    Clinical signs of acute reversible pulpitis :

    • Absent spontaneous pain

    • Spontaneous pain

    • Pain by hot than cold

    • Percussion: positive

    Correct Answer
    A. Absent spontaneous pain
    Explanation
    The correct answer is "Absent spontaneous pain." Acute reversible pulpitis is characterized by inflammation of the dental pulp, which can cause pain. However, in the case of acute reversible pulpitis, the pain is usually triggered by a stimulus such as hot or cold, rather than occurring spontaneously. Additionally, percussion testing is usually positive, indicating sensitivity to pressure. Therefore, the absence of spontaneous pain is a key clinical sign of acute reversible pulpitis.

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  • 10. 

    Treatment of acute irreversible pulpitis :

    • Root canal treatment

    • Extraction

    • Filling amalgam

    • Pulpotomy

    Correct Answer
    A. Root canal treatment
    Explanation
    Root canal treatment is the appropriate treatment for acute irreversible pulpitis. This condition occurs when the dental pulp becomes inflamed and cannot heal on its own. Root canal treatment involves removing the infected pulp, cleaning and shaping the root canal, and then filling it with a biocompatible material. This procedure eliminates the infection and saves the tooth from extraction. Extraction may be considered if the tooth is severely damaged or if root canal treatment is not possible. Filling amalgam and pulpotomy are not suitable treatments for acute irreversible pulpitis.

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  • 11. 

    Treatment of chronic pulpitis:

    • Root canal

    • Extraction

    • Pulp capping

    • Pulpotomy

    Correct Answer
    A. Root canal
    Explanation
    The correct answer is root canal because it is the most effective treatment for chronic pulpitis. Root canal treatment involves removing the infected pulp from the tooth and cleaning the root canals before sealing them off. This procedure helps to alleviate pain and prevent further infection, allowing the tooth to be saved rather than extracted. Pulp capping and pulpotomy are alternative treatments that may be used in certain cases, but they are not as commonly recommended as root canal treatment for chronic pulpitis.

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  • 12. 

    Anesthetic tests in endodontic is used when:

    • Usual tests have failed

    • Pain when biting down

    • Sensitivity with hot or cold

    • Discolouration of the tooth

    Correct Answer
    A. Usual tests have failed
    Explanation
    The correct answer is "usual tests have failed." This means that when other tests, such as sensitivity to hot or cold, pain when biting down, or tooth discoloration, have not provided a clear diagnosis, anesthetic tests are used in endodontics. These tests involve administering local anesthesia to numb the area and determine the source of the pain or discomfort.

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  • 13. 

    NaOCLប្រើក្នុងការសំអាតរន្ធឬសកើនឥទ្ធិពលទ្វេដងពេលណា :

    • NaOCLត្រូវបានកំដៅ (60អង្សាC)

    • NaOCL ប្រើរួមគ្នាជាមួយHydrogen peroxide

    • NaOCL ប្រើរួមគ្នាជាមួយserum saline

    • NaOCLត្រូវបានកំដៅ (30អង្សាC)

    Correct Answer
    A. NaOCLត្រូវបានកំដៅ (60អង្សាC)
  • 14. 

    NaOCL2.5%អាចទុកក្នុងroot canal បាន :

    • 2 weeks

    • 5 week

    • 3 weeks

    • 4 weeks

    Correct Answer
    A. 2 weeks
    Explanation
    NaOCL 2.5% can be stored in a root canal for a maximum of 2 weeks.

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  • 15. 

    Contraindication of direct pulp capping :

    • Excess bleeding at the exposure sit (uncontrolled bleeding)

    • Deep caries

    • Pain by cold

    • Pain by hot

    Correct Answer
    A. Excess bleeding at the exposure sit (uncontrolled bleeding)
    Explanation
    Excess bleeding at the exposure site (uncontrolled bleeding) is a contraindication for direct pulp capping. This is because excessive bleeding can interfere with the success of the procedure and make it difficult to achieve a proper seal. It can also indicate underlying issues such as inflammation or infection, which may require alternative treatment options. Therefore, it is important to address and control any bleeding before attempting direct pulp capping.

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  • 16. 

    Black espac គឺលំហរស្ថិតនៅចន្លោះ :

    • Minor foramen & major foramen

    • Roof of pulp chamber&Foor of pulp chamber

    • Orifice & constriction

    • Canal principal & ligament

    Correct Answer
    A. Minor foramen & major foramen
    Explanation
    The correct answer is "Minor foramen & major foramen". These terms refer to openings or passages in the body. The minor foramen is a small opening, while the major foramen is a larger opening. These openings can be found in various parts of the body and serve different functions.

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  • 17. 

    Maxillary central incisor has :

    • 1 root 100%

    • 1root & 2 canal

    • 1 root & 2canal 50%

    • 1 root & 2 canal 20%

    Correct Answer
    A. 1 root 100%
    Explanation
    The maxillary central incisor typically has one root. This means that it is most commonly found with a single root structure.

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  • 18. 

    Average age of eruption maxillary central incisor is :

    • 7-8 years

    • 9-10 years

    • 4-5years

    • 10-11 years

    Correct Answer
    A. 7-8 years
    Explanation
    The average age of eruption of the maxillary central incisor is 7-8 years. This means that most children will start to see their maxillary central incisor, which is the front tooth in the upper jaw, come in between the ages of 7 and 8. It is important to note that this is an average age and there can be some individual variation.

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  • 19. 

    Average length of maxillary central incisor is:

    • 22.5mm

    • 25mm

    • 24mm

    • 26mm

    Correct Answer
    A. 22.5mm
    Explanation
    The average length of a maxillary central incisor is 22.5mm.

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  • 20. 

    Average length of maxillary lateral incisor is:

    • 22mm

    • 24mm

    • 25mm

    • 26mm

    Correct Answer
    A. 22mm
    Explanation
    The average length of the maxillary lateral incisor is 22mm.

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  • 21. 

    Etiology of acute reversible pulpitis:

    • Dental caries and cavity preparation

    • Dental caries

    • Cavity preparation

    • Abscess

    Correct Answer
    A. Dental caries and cavity preparation
    Explanation
    The etiology of acute reversible pulpitis is caused by both dental caries and cavity preparation. Dental caries refers to the decay of the tooth caused by bacteria, which can lead to inflammation of the pulp. Cavity preparation involves the removal of decayed tooth structure in order to restore the tooth, which can also cause inflammation of the pulp. Therefore, both dental caries and cavity preparation contribute to the development of acute reversible pulpitis.

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  • 22. 

    Average age of eruption maxillary second molar:

    • 12-13 years

    • 6-7 years

    • 7-8 years

    • 9-10 years

    Correct Answer
    A. 12-13 years
    Explanation
    The eruption of the maxillary second molar typically occurs at an average age of 12-13 years. This means that most individuals will experience the emergence of this tooth between the ages of 12 and 13.

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  • 23. 

    Root canal គឺ:

    • ជារន្ធឬសធ្មេញបន្តpulp chamber នៅក្រោមcervical ប្រហែល1-2mm

    • ជារន្ធឬសធ្មេញបន្តពីorifice

    • ជារន្ធឬសធ្មេញបន្តpulp chamber នៅក្រោមcervical ប្រហែល3 mm

    • All are correct

    Correct Answer
    A. ជារន្ធឬសធ្មេញបន្តpulp chamber នៅក្រោមcervical ប្រហែល1-2mm
    Explanation
    The correct answer suggests that the root canal is located below the cervical area and is approximately 1-2mm in length. This means that the root canal extends from the pulp chamber, which is the hollow space inside the tooth, to the cervical area, which is the neck of the tooth. The answer also states that if the root canal extends more than 3mm below the cervical area, it is also considered correct.

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  • 24. 

    Pulp chamber កាន់តែរួមតូចដោយសារ:

    • All are corrects

    • អាយុកាល(វ័យ)

    • បាតុភូតពីខាងក្រៅ(ការទំពារ)

    • ការករកើតsecondary dentine

    Correct Answer
    A. All are corrects
    Explanation
    The correct answer is "All are corrects". This means that all of the options mentioned in the question are correct explanations for the small size of the pulp chamber. These include factors such as age, external trauma, and the formation of secondary dentine.

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  • 25. 

    Average age of eruption mandibular second molar:

    • 11-13years

    • 14-15years

    • 9-10years

    • 1011years

    Correct Answer
    A. 11-13years
    Explanation
    The correct answer is 11-13 years. This is because the eruption of the mandibular second molar typically occurs within this age range.

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  • 26. 

    Advantages of rubber dam

    • Increases visibility and accessibility.

    • Psychology

    • Easy to work

    • Save money

    Correct Answer
    A. Increases visibility and accessibility.
    Explanation
    The advantage of using a rubber dam is that it increases visibility and accessibility during dental procedures. By isolating the tooth or teeth being worked on, the rubber dam prevents saliva and other fluids from interfering with the dentist's view and access to the area. This allows for better precision and efficiency during treatment, resulting in improved outcomes. Additionally, the rubber dam helps to keep the patient's mouth dry and comfortable, reducing the risk of infection and enhancing the overall dental experience.

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  • 27. 

    Apical delta គឺជា រន្ធបន្ថែមមានប្រភពចេញពី :

    • Canal principal ស្ថិតនៅជិត foramen apical

    • Pulp horn

    • Floor of pulp chamber

    • Roof of pulp chamber

    Correct Answer
    A. Canal principal ស្ថិតនៅជិត foramen apical
    Explanation
    The apical delta is an additional source of blood supply and nerve innervation in the root apex of a tooth. It is located at the apex of the root and is connected to the main root canal through the apical foramen. Therefore, the correct answer is "Canal principal ស្ថិតនៅជិត foramen apical".

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  • 28. 

    Etiology of pulpitis is:

    • All are corrects

    • Dental caries

    • Fracture of the crown

    • Traumatic occlusion

    Correct Answer
    A. All are corrects
    Explanation
    The etiology of pulpitis can be attributed to various factors, including dental caries, fracture of the crown, and traumatic occlusion. Dental caries refers to the decay and destruction of tooth structure, which can lead to inflammation and infection of the pulp. A fracture of the crown can expose the pulp, making it susceptible to bacteria and causing inflammation. Traumatic occlusion, which occurs when there is excessive force on the teeth during biting or chewing, can also lead to pulpitis. Therefore, all of these factors can contribute to the development of pulpitis.

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  • 29. 

    Etiology of acute irreversible pulpitis is:

    • Pulp exposure and dental caries

    • Pulp exposure

    • Dental caries

    • Crown frcature

    Correct Answer
    A. Pulp exposure and dental caries
    Explanation
    Acute irreversible pulpitis refers to inflammation of the dental pulp that cannot be reversed. The etiology, or cause, of this condition is most commonly attributed to pulp exposure and dental caries. Pulp exposure refers to the exposure of the pulp chamber due to trauma or decay, allowing bacteria to enter and cause inflammation. Dental caries, or cavities, occur when bacteria in the mouth produce acid that erodes the tooth structure, eventually reaching the pulp. Both factors contribute to the development of acute irreversible pulpitis. Crown fracture, although it can cause pulp exposure, is not mentioned as a standalone cause in the answer options.

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  • 30. 

    Evaluation of thermal test results:

    • All are corrects

    • No response non-vital pulp

    • No response necrotic pulp

    • No response calcified canal

    Correct Answer
    A. All are corrects
    Explanation
    The given answer states that all of the evaluations of the thermal test results are correct. This implies that if there is no response to the thermal test, it could indicate a non-vital pulp, a necrotic pulp, or a calcified canal. In other words, the absence of a response to the thermal test can be indicative of various dental conditions, including those mentioned above.

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  • 31. 

    Sealing material ត្រូវ:

    • រក្សារទំហំដដែរនិងមិនរួញសណ្តកនៅពេលរឹង and radiopaque

    • រក្សារទំហំដដែរនិងមិនរួញសណ្តកនៅពេលរឹង

    • Radiopaque

    • កុំអោយធ្មេញឈឹចាប់ទៅថ្ងៃក្រោយ

    Correct Answer
    A. រក្សារទំហំដដែរនិងមិនរួញសណ្តកនៅពេលរឹង and radiopaque
    Explanation
    The correct answer is "Sealing material should be of appropriate size and not easily dislodged during use, as well as radiopaque." This means that the sealing material should be the right size and securely stay in place when used. Additionally, it should be radiopaque, meaning it can be seen on an X-ray image. This is important for monitoring the effectiveness of the sealing material and ensuring proper placement.

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  • 32. 

    Access cavity of mandibular central incisor is :

    • Oval is wider buccal-lingual

    • Oval is wider mesial-distal

    • Triangular with the base toward the border libre and apex toward the distal

    • Triangular with the base toward the border libre and apex toward the mesial

    Correct Answer
    A. Oval is wider buccal-lingual
    Explanation
    The access cavity of a mandibular central incisor is oval and wider buccal-lingual. This means that the shape of the access cavity is elongated horizontally and wider from the cheek side to the tongue side. This shape allows for better visibility and easier instrumentation during the root canal treatment of the tooth.

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  • 33. 

    Orifice គឺជារុន្ធ:

    • របស់root canal ដែលស្ថិតនៅក្រោមcervical នៃធ្មេញប្រហែល1mm-2mm

    • ស្ថិតនៅចុងនៃ apex

    • បន្តចេញពី root canal

    • ស្ថិតនៅត្រង់ចំណុចconstriction

    Correct Answer
    A. របស់root canal ដែលស្ថិតនៅក្រោមcervical នៃធ្មេញប្រហែល1mm-2mm
    Explanation
    The orifice of the root canal is located below the cervical area of the tooth, which is the area near the gum line. It is typically found at the apex or the tip of the root. The orifice is the opening or entrance of the root canal, and it is situated at a constriction point. It is usually around 1mm-2mm in size.

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  • 34. 

    Access cavity of maxillary canine is :

    • Oval is wider buccal-palatal

    • Triangular with the base toward the border libre and apex toward the cingulum

    • Oval is wider mesial-distal

    • Triangular with the base toward the cingulum and apex toward the boder libre

    Correct Answer
    A. Oval is wider buccal-palatal
    Explanation
    The access cavity of the maxillary canine is described as oval and wider buccal-palatal. This means that the shape of the access cavity is elongated and wider from the buccal (cheek) to the palatal (tongue) aspect. This shape allows for better visibility and access to the pulp chamber and canals of the tooth during root canal treatment.

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  • 35. 

    Function of paper points :

    • To absorb any moisture in the canal

    • Obturation

    • To enlarge the canal

    • Working length

    Correct Answer
    A. To absorb any moisture in the canal
    Explanation
    Paper points are used in dentistry to absorb any moisture present in the root canal. During root canal treatment, it is important to ensure that the canal is completely dry before filling it with a permanent material. Moisture can interfere with the adhesion of the filling material and compromise the success of the treatment. Paper points are made of highly absorbent material and are inserted into the canal to absorb any remaining moisture after irrigation. This helps to create a dry environment for the obturation (filling) of the canal, ensuring a successful outcome.

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  • 36. 

    Diagnostic tests in endodontic:

    • Pain and electrical

    • Pain

    • Electrical

    • Swelling

    Correct Answer
    A. Pain and electrical
    Explanation
    The correct answer is "pain and electrical." In endodontic diagnostic tests, pain and electrical tests are commonly used to assess the condition of the tooth. Pain tests involve applying stimuli to the tooth and evaluating the patient's response to determine the source and intensity of pain. Electrical tests, such as pulp vitality tests, measure the tooth's response to electrical stimulation to assess the health of the pulp. These tests help in diagnosing and determining the appropriate treatment for endodontic problems.

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  • 37. 

    តើណាមួយជាantiseptic ដែលប្រើក្នុងendodontic:

    • CMC (Camphorate Parachlorophenol)

    • EDTA

    • Hydrogen peroxide

    • Serum salin

    Correct Answer
    A. CMC (Camphorate Parachlorophenol)
    Explanation
    CMC (Camphorate Parachlorophenol) is used as an antiseptic in endodontic procedures. It helps to disinfect the root canal system by killing bacteria and preventing their growth. This antiseptic has antimicrobial properties that make it effective in reducing the risk of infection during endodontic treatment.

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  • 38. 

    Average age of eruption maxillary lateral incisor is:

    • 8-9 years

    • 10-11years

    • 11-12years

    • 12-13years

    Correct Answer
    A. 8-9 years
    Explanation
    The average age of eruption for the maxillary lateral incisor is 8-9 years. This means that, on average, children will start to see the eruption of their maxillary lateral incisor between the ages of 8 and 9.

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  • 39. 

    Function of probe :

    • To detect canal

    • To enlarge canal

    • Obturation

    • To enlarge canal and obturation

    Correct Answer
    A. To detect canal
    Explanation
    The function of a probe is to detect the canal. A probe is a dental instrument that is used to explore and locate the root canal during a dental procedure. It is used to determine the depth and direction of the canal, allowing the dentist to accurately perform procedures such as root canal treatment or obturation. By gently probing the area, the dentist can identify the canal and ensure that it is properly treated.

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  • 40. 

    Bisecting technique:

    • The X ray pass perpendicular to the angular bisector of the tooth and film

    • Film place parallel to the long axis of the tooth

    • The X ray pass perpendicular to the long axis of the tooth

    • All are corrects

    Correct Answer
    A. The X ray pass perpendicular to the angular bisector of the tooth and film
    Explanation
    The correct answer is "the X ray pass perpendicular to the angular bisector of the tooth and film." This technique ensures that the X-ray beam passes through the tooth and film at a right angle, providing a clear and accurate image. Placing the film parallel to the long axis of the tooth or having the X-ray pass perpendicular to the long axis of the tooth may result in distorted or unclear images.

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  • 41. 

    NaOCLដែលលាយជាមួយទឹកឬsalineត្រូវ:

    • រក្សារទុកក្នុងដបជ័រពណ៍ស្រអាប់(កុំអោយត្រូវពន្លឺ)បានរយះពេល១៥ថ្ងៃ

    • រក្សារទុកក្នុងដបជ័រពណ៍ស្រអាប់(កុំអោយត្រូវពន្លឺ)បានរយះពេល១៦ថ្ងៃ

    • រក្សារទុកក្នុងដបជ័រពណ៍ស្រអាប់(កុំអោយត្រូវពន្លឺ)បានរយះពេល១៧ថ្ងៃ

    • រក្សារទុកក្នុងដបជ័រពណ៍ស្រអាប់(កុំអោយត្រូវពន្លឺ)បានរយះពេល១៨ថ្ងៃ

    Correct Answer
    A. រក្សារទុកក្នុងដបជ័រពណ៍ស្រអាប់(កុំអោយត្រូវពន្លឺ)បានរយះពេល១៥ថ្ងៃ
  • 42. 

    Necrotic pulp will not respond to:

    • All are corrects

    • Clod

    • Hot

    • Ethyl chloride

    Correct Answer
    A. All are corrects
  • 43. 

    Average age of eruption mandibular central incisor is:

    • 6-7years

    • 8-9 years

    • 11-12years

    • 12-13years

    Correct Answer
    A. 6-7years
    Explanation
    The average age of eruption for the mandibular central incisor is 6-7 years. This means that on average, children will start to see their mandibular central incisor erupt between the ages of 6 and 7.

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  • 44. 

    Pulp capping is:

    • To preserve the vitality of a potentially infected pulp

    • To preserve the caries

    • To preserve the pulp necrosis

    • All are corrects

    Correct Answer
    A. To preserve the vitality of a potentially infected pulp
    Explanation
    Pulp capping is a dental procedure that aims to preserve the vitality of a potentially infected pulp. It involves placing a medicament directly on the exposed or nearly exposed pulp to stimulate healing and prevent further damage. This procedure is typically done when the pulp is not yet necrotic or dead, but there is a risk of infection. By preserving the vitality of the pulp, the dentist can avoid the need for a root canal or extraction.

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  • 45. 

    Indications of direct pulp capping:

    • Small exposures less than 1mm

    • Small exposures less than 2mm

    • Small exposures less than 3mm

    • Small exposures less than 4mm

    Correct Answer
    A. Small exposures less than 1mm
    Explanation
    Direct pulp capping is a procedure used to treat small exposures in the pulp of a tooth. It involves placing a protective material directly over the exposed pulp to promote healing and prevent infection. The smaller the exposure, the better the chances of success for direct pulp capping. Therefore, indications for direct pulp capping are small exposures less than 1mm, as these have the highest likelihood of successful treatment.

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  • 46. 

    Advantages of rubber dam :

    • Increases visibility and accessibility

    • Psychology

    • Easy to work

    • Save money

    Correct Answer
    A. Increases visibility and accessibility
    Explanation
    Rubber dam is advantageous because it increases visibility and accessibility during dental procedures. By isolating the tooth being treated, the rubber dam provides a clear field of view for the dentist, allowing them to see and access the tooth more easily. This improves accuracy and reduces the risk of contamination. Additionally, the rubber dam helps to protect the patient's mouth and throat from debris or accidental ingestion, ensuring a safer and more comfortable experience.

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  • 47. 

    Treatment of pulp necrosis:

    • Root canal treatment

    • Extraction

    • Pulp capping

    • Pulpotomy

    Correct Answer
    A. Root canal treatment
    Explanation
    Root canal treatment is the correct answer because it is the most effective and commonly used treatment for pulp necrosis. Pulp necrosis occurs when the pulp tissue inside the tooth dies, usually due to infection or trauma. Root canal treatment involves removing the infected or dead pulp, cleaning and shaping the root canal, and then filling it with a biocompatible material. This procedure helps to eliminate the infection, relieve pain, and save the natural tooth. Extraction is another option, but it is usually considered as a last resort when the tooth cannot be saved. Pulp capping and pulpotomy are treatments used for less severe cases of pulp damage.

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  • 48. 

    គោលការណ័ជាមូលដ្ថានក្នុងការរៀបចំរន្ធឬសគឺរៀបចំផ្នែក:

    • Pulp chamber,1/3 collar,1/3 midle,1/3 apical

    • 1/3 collar,1/3 midle, 1/3 apical

    • Pulp chamber,1/2 root, 1/2apical

    • 1/2 root,1/2apical

    Correct Answer
    A. Pulp chamber,1/3 collar,1/3 midle,1/3 apical
    Explanation
    The correct answer is the first option, "Pulp chamber, 1/3 collar, 1/3 middle, 1/3 apical." This option describes the distribution of the different parts within the tooth. The pulp chamber is located in the center of the tooth, while the collar, middle, and apical regions are divided into equal thirds.

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  • 49. 

    EDTAជាsolution សំអាតរន្ធឬសដ័មានប្រសិទ្ធិភាព:

    • តែក្នុងការបំបាត់ចោលនូវកំទិចកំទី(debris) and កាន់តែល្អពេលមានវត្តមានNaOCL

    • តែក្នុងការបំបាត់ចោលនូវកំទិចកំទី(debris)

    • តែក្នុងការបំបាត់ចោលនូវបណ្តាលកោសិការpulp ដែលនៅសេសសល់ក្នុងcanal

    • កាន់តែល្អពេលមានវត្តមាន NaOCL

    Correct Answer
    A. តែក្នុងការបំបាត់ចោលនូវកំទិចកំទី(debris) and កាន់តែល្អពេលមានវត្តមានNaOCL
    Explanation
    EDTA is a solution with chelating properties. It is effective in removing debris and is particularly beneficial when there is the presence of NaOCL, as it aids in the elimination of debris and enhances the pulp dissolution process in the canal.

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Quiz Review Timeline (Updated): Mar 15, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 15, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 04, 2019
    Quiz Created by
    Limhort
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