Oral Surgery Dr.Bushara & Dr.Seang Santana 97+107qcm

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  • 1/204 Questions

    What is the concussion?

    • Without displacement, pain to percussion
    • Pain to percussion with mobility
    • Without displacement , no pain to percussion
    • Mobility and displacement
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About This Quiz

This quiz, titled 'Oral surgery Dr. Bushara & Dr. Seang Santana 97+107qcm', assesses knowledge on different types of dental injuries including proteolytic enzymes, concussion, subluxation, luxation, extrusive and intrusive injuries, essential for dental professionals.

Oral Surgery Dr.Bushara & Dr.Seang Santana 97+107qcm - Quiz

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  • 2. 

    What is the luxation?

    • Could be extrusive, intrusive or lateral direction displacement

    • Displacement but no mobility

    • No displacement , no pain to percussion

    • No displacement but increase mobility

    Correct Answer
    A. Could be extrusive, intrusive or lateral direction displacement
    Explanation
    Luxation refers to the complete dislocation or displacement of a joint or bone from its normal position. It can occur in different directions, including extrusive (outward displacement), intrusive (inward displacement), or lateral direction displacement. The answer suggests that luxation can occur in any of these directions, indicating that it is not limited to a specific type of displacement.

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  • 3. 

    What is the Lateral displacement injury?

    • Tooth pushed laterally, buccally or pallatally

    • Tooth displaced in the occlusal dirrection

    • Tooth displaced in apically into socket

    • Tooth totally displaced from the socket

    Correct Answer
    A. Tooth pushed laterally, buccally or pallatally
    Explanation
    Lateral displacement injury refers to a situation where a tooth is pushed in a sideways direction, either towards the cheek (buccally) or towards the palate (pallatally). This type of injury can occur due to trauma or impact to the mouth, causing the tooth to move out of its normal position. It is important to seek immediate dental attention in such cases to assess the extent of the injury and determine the appropriate treatment.

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  • 4. 

    What is the Avulsion?

    • Tooth totally displaced from the socket

    • Tooth displaced in the occlusal direction

    • Tooth displaced in apically into socket

    • TTooth pushed laterally, buccally or pallatally

    Correct Answer
    A. Tooth totally displaced from the socket
    Explanation
    Avulsion refers to the complete displacement of a tooth from its socket. This means that the tooth is completely knocked out and no longer attached to the surrounding tissues. It can occur due to trauma or injury to the mouth and requires immediate dental attention to increase the chances of successful reimplantation.

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  • 5. 

    The tooth that is not respond to electric pulp tester mean?

    • Tooth had pulp negative respond or pulp dead

    • Tooth is vital

    • Tooth is mobility

    • Tooth had periodontal problem

    Correct Answer
    A. Tooth had pulp negative respond or pulp dead
    Explanation
    The correct answer is "Tooth had pulp negative respond or pulp dead". This means that the tooth is not responding to the electric pulp tester, indicating that the pulp inside the tooth is either non-responsive or dead.

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  • 6. 

    ក្នុងការរាប់លេខធ្មេញតើកម្ពុជាប្រើការ Dental charting តាមរបៀបអ្វី?

    • FDI charting system

    • Universal charting system

    • Cambodia system

    • Palmer system

    Correct Answer
    A. FDI charting system
    Explanation
    The FDI charting system is used in Cambodia for dental charting.

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  • 7. 

    What is the meaning of tooth impaction?

    • Tooth fails to erupt into the dental arch within the expected developmental

    • Tooth had food impaction

    • Tooth had losing contact and impact on development of carie

    • Tooth occlusion miss alignment

    Correct Answer
    A. Tooth fails to erupt into the dental arch within the expected developmental
    Explanation
    Tooth impaction refers to the condition where a tooth does not fully emerge or erupt into its proper position in the dental arch during normal development. This can occur due to various reasons such as lack of space in the jaw, obstruction by other teeth, or abnormal tooth positioning. Impacted teeth may cause pain, discomfort, and can lead to other dental problems if left untreated.

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  • 8. 

    What is the meaning of Wisdom tooth?

    • Third molar

    • The tooth gain wisdom and knowlenge

    • Permanent tooth

    • Temporary tooth

    Correct Answer
    A. Third molar
    Explanation
    The correct answer is "Third molar." Wisdom teeth, also known as third molars, are the last set of teeth to develop in the mouth. They typically appear during the late teens or early twenties. These teeth can cause various dental issues such as overcrowding, impaction, and infection, which often require their removal.

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  • 9. 

    What is the tooth #18 meaning for the FDI charting system ?

    • Upper Right Maxillary Third molar

    • Upper right maxillary second molar

    • Upper left Maxillary Third molar

    • Lower Left Mandibular third molar

    Correct Answer
    A. Upper Right Maxillary Third molar
    Explanation
    The tooth #18 corresponds to the Upper Right Maxillary Third molar in the FDI charting system. This means that tooth #18 is the third molar located in the upper right side of the maxilla (upper jaw).

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  • 10. 

    What is the FDI charting number of tooth #33?

    • Left lower canine

    • Left lower first premolar

    • Left lower second molar

    • Left lower first molar.

    Correct Answer
    A. Left lower canine
    Explanation
    The FDI charting number of tooth #33 is 43, which corresponds to the Left lower canine.

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  • 11. 

    What is the FDI charting number of tooth #31

    • Left lower cental incisor

    • Left lower first premolar

    • Left lower second molar

    • Left lower first molar

    Correct Answer
    A. Left lower cental incisor
  • 12. 

    What is the FDI charting number of tooth #34?

    • Left lower first premolar

    • Left lower second molar

    • Left lower canine

    • Left lower first molar.

    Correct Answer
    A. Left lower first premolar
    Explanation
    The FDI charting number of tooth #34 is the Left lower first premolar.

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  • 13. 

    What is the FDI charting number of tooth #37?

    • Left lower second molar

    • Right Lower central incisor

    • Right Lower third molar

    • Right lower second molar

    Correct Answer
    A. Left lower second molar
    Explanation
    The FDI charting number of tooth #37 is the Left lower second molar.

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  • 14. 

    PA xray is use to see ?

    • Condition of tooth injury damage

    • Condyle fracture

    • Maxillary sinus

    • Coronoid bone

    Correct Answer
    A. Condition of tooth injury damage
    Explanation
    A PA x-ray is used to see the condition of tooth injury damage. This type of x-ray provides a detailed view of the teeth and surrounding structures, allowing dentists to assess any damage or trauma to the teeth. It helps in identifying fractures, cracks, or other injuries that may require treatment or intervention. By examining the PA x-ray, dentists can determine the extent of the damage and plan appropriate treatment options.

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  • 15. 

    OPG xray is use for?

    • Dento-alveolar fracture assessment

    • Spot the detail problem in the tooth

    • Measurement precisely of inferior dental nerve to root of 3rnd molar

    • Sinus assessment

    Correct Answer
    A. Dento-alveolar fracture assessment
    Explanation
    The correct answer is dento-alveolar fracture assessment. OPG x-ray, also known as orthopantomogram, is a type of dental x-ray that provides a panoramic view of the upper and lower jaws, including the teeth, surrounding structures, and the temporomandibular joint. It is commonly used to assess dento-alveolar fractures, which are fractures involving the teeth and the surrounding bone. This type of x-ray allows for a comprehensive evaluation of the extent and location of the fracture, aiding in treatment planning and management.

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  • 16. 

    PA xray is use to see ?

    • Periapical infection of the tooth

    • Condyle fracture

    • Maxillary sinus

    • Coronoid bone

    Correct Answer
    A. Periapical infection of the tooth
    Explanation
    A PA x-ray is used to see periapical infection of the tooth. This type of infection occurs at the tip of the tooth's root and can be caused by tooth decay or trauma. The x-ray allows the dentist to see any infection or inflammation in the surrounding bone and tissues, helping them to diagnose and treat the condition effectively.

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  • 17. 

    PA xray is use to see ?

    • Root morphology before treatment

    • Condyle fracture

    • Maxillary sinus

    • Coronoid bone

    Correct Answer
    A. Root morphology before treatment
    Explanation
    A PA x-ray is commonly used in dentistry to assess the root morphology of teeth before any treatment is done. This helps the dentist to determine the shape, size, and condition of the roots, which is crucial for planning the appropriate treatment. By evaluating the root morphology, the dentist can identify any abnormalities, such as root canal infections, root fractures, or anatomical variations, that may affect the treatment approach. Therefore, a PA x-ray is an essential tool for assessing the root morphology before initiating any dental treatment.

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  • 18. 

    PA xray is use to see ?

    • Periapical region of the tooth

    • Condyle fracture

    • Maxillary sinus

    • Coronoid bone

    Correct Answer
    A. Periapical region of the tooth
    Explanation
    A periapical x-ray is used to see the periapical region of the tooth. This region includes the tip of the tooth root and the surrounding bone. It is commonly used to diagnose dental conditions such as tooth decay, abscesses, and infections. The other options listed, condyle fracture, maxillary sinus, and coronoid bone, are not typically visualized on a periapical x-ray.

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  • 19. 

    What is OPG stand for ?

    • Orthopantomagram

    • Oral Papilloma Germ

    • Panoramic

    • Oral Periapical radiography

    Correct Answer
    A. Orthopantomagram
    Explanation
    OPG stands for Orthopantomagram, which is a type of dental radiograph that provides a panoramic view of the upper and lower jaws, including the teeth, jawbone, and surrounding structures. It is commonly used in dentistry to assess the overall dental health and to diagnose various dental conditions such as impacted teeth, fractures, and infections.

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  • 20. 

    What is the Bacteremia?

    • Presence of bacteria in the blood

    • Presence the virus in the lung

    • Cancer metastasis

    • Present of bacteria in the brain

    Correct Answer
    A. Presence of bacteria in the blood
    Explanation
    Bacteremia is a medical condition characterized by the presence of bacteria in the bloodstream. This can occur due to various reasons such as an infection in a specific part of the body, a compromised immune system, or a medical procedure. Bacteria in the blood can cause severe infections and lead to serious complications if not treated promptly. Therefore, it is important to diagnose and treat bacteremia promptly to prevent further harm to the body.

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  • 21. 

    One of the answers below is the Principle of using antibiotic?

    • Use of a specific, narrow spectrum antibiotic and Determine the antibiotic sensitivity

    • Using the strongest antibiotic

    • Any antibiotic that is the most expensive is the best to give

    • Use of a bacteriostatic rather than a bactericidal

    Correct Answer
    A. Use of a specific, narrow spectrum antibiotic and Determine the antibiotic sensitivity
    Explanation
    The principle of using antibiotics involves using a specific, narrow spectrum antibiotic and determining the antibiotic sensitivity. This means that instead of using a broad spectrum antibiotic that can kill a wide range of bacteria, a narrow spectrum antibiotic is chosen that targets specific types of bacteria. Additionally, determining the antibiotic sensitivity helps in identifying the most effective antibiotic for a particular bacterial infection, ensuring that the chosen antibiotic will be effective in treating the infection.

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  • 22. 

    One of the answers below is the Principle of using antibiotic?

    • Host factors and Encourage patient compliance

    • Using the strongest antibiotic

    • Any antibiotic that is the most expensive is the best to give

    • Use of a bacteriostatic rather than a bactericidal

    Correct Answer
    A. Host factors and Encourage patient compliance
    Explanation
    The principle of using antibiotics involves considering host factors, such as the patient's age, immune system status, and underlying health conditions, to determine the most appropriate antibiotic. Additionally, encouraging patient compliance is crucial to ensure that the prescribed antibiotic is taken as directed, for the full duration of treatment. This helps to prevent the development of antibiotic resistance and ensures the effectiveness of the antibiotic in treating the infection.

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  • 23. 

    One of the answers below is the Principle of using antibiotic?

    • Use of the antibiotic with a proven history of success

    • Using the strongest antibiotic

    • Any antibiotic that is the most expensive is the best to give

    • Use of a bacteriostatic rather than a bactericidal

    Correct Answer
    A. Use of the antibiotic with a proven history of success
    Explanation
    The principle of using antibiotic with a proven history of success is based on the idea that certain antibiotics have been extensively tested and shown to effectively treat specific bacterial infections. By using an antibiotic that has been proven to work in the past, there is a higher likelihood of successfully treating the current infection. This approach takes into consideration the knowledge and experience gained from previous cases, ensuring a more targeted and effective treatment.

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  • 24. 

    One of the answers below is the Principle of using antibiotic?

    • Use of a bactericidal rather than a bacteriostatic

    • Using the strongest antibiotic

    • Any antibiotic that is the most expensive is the best to give

    • Use of a bacteriostatic rather than a bactericidal

    Correct Answer
    A. Use of a bactericidal rather than a bacteriostatic
    Explanation
    The principle of using antibiotics is to use a bactericidal (kills bacteria) rather than a bacteriostatic (inhibits bacterial growth) antibiotic. Bactericidal antibiotics directly kill bacteria, while bacteriostatic antibiotics only inhibit bacterial growth, allowing the immune system to eliminate the bacteria. Using a bactericidal antibiotic ensures a more effective and efficient treatment of bacterial infections.

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  • 25. 

    One of the answers below is the Principle of using antibiotic?

    • Identification of the causative organism

    • Using the strongest antibiotic

    • Any antibiotic that is the most expensive is the best to give

    • A and C are correct

    Correct Answer
    A. Identification of the causative organism
    Explanation
    The correct answer is "Identification of the causative organism." This principle involves determining the specific microorganism responsible for causing the infection before prescribing an antibiotic. By identifying the causative organism, healthcare professionals can select the most appropriate antibiotic that specifically targets and kills the particular microorganism, increasing the chances of successful treatment. This approach helps to avoid the unnecessary use of broad-spectrum antibiotics and reduces the risk of antibiotic resistance.

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  • 26. 

    How many level of Precaution of using antibiotic:?

    • 3 level: Level A, B, C

    • 4 Level: Level A, B, C, D

    • 2 Level: Level A, B

    Correct Answer
    A. 3 level: Level A, B, C
    Explanation
    The correct answer is 3 levels: Level A, B, C. This means that there are three levels of precaution when using antibiotics, which are categorized as Level A, Level B, and Level C. It is important to follow these levels of precaution to ensure the safe and effective use of antibiotics.

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  • 27. 

    What is the Bactericidal antibiotic?

    • Antibiotics kill bacteria

    • Antibiotic limit growth of bacteria

    • Antibiotic resistant

    • Antibiotic sensitivity

    Correct Answer
    A. Antibiotics kill bacteria
    Explanation
    The correct answer is "antibiotics kill bacteria." Bactericidal antibiotics are a type of antibiotic that directly kill bacteria by disrupting their cell walls or interfering with essential cellular processes. This is in contrast to bacteriostatic antibiotics, which only inhibit the growth and reproduction of bacteria without directly killing them. Bactericidal antibiotics are often used in cases of severe infections or when the immune system is compromised, as they provide a more immediate and effective means of eliminating bacterial pathogens.

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  • 28. 

    What is the Bacteriostatic antibiotic?

    • Antibiotic limit growth of bacteria

    • Antibiotics kill bacteria

    • Antibiotic resistant

    • Antibiotic sensitivity

    Correct Answer
    A. Antibiotic limit growth of bacteria
    Explanation
    Bacteriostatic antibiotics are a type of antibiotic that inhibit the growth and reproduction of bacteria, but do not directly kill them. These antibiotics work by interfering with essential bacterial processes, such as protein synthesis or DNA replication, which slows down or stops bacterial growth. This allows the body's immune system to effectively eliminate the bacteria. Bacteriostatic antibiotics are often used when the immune system is capable of fighting off the infection with some assistance, or when it is important to prevent the development of antibiotic resistance.

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  • 29. 

    Leukopenia?

    • Decrease the number of white blood cell in blood

    • Increase in the number of white blood cell in blood

    • Lower the red blood cell in blood

    Correct Answer
    A. Decrease the number of white blood cell in blood
    Explanation
    Leukopenia refers to a condition where there is a decrease in the number of white blood cells in the blood. This condition can be caused by various factors such as viral infections, certain medications, autoimmune disorders, or bone marrow disorders. A decrease in white blood cells can weaken the immune system and make the body more susceptible to infections. Therefore, the correct answer is "Decrease the number of white blood cell in blood".

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  • 30. 

    Bactericidal and bacteriostatic drugs given together are?

    • Antagonistic

    • Independently active

    • Additive

    • Synergistic

    Correct Answer
    A. Antagonistic
    Explanation
    When bactericidal and bacteriostatic drugs are given together, they have opposite effects on the growth and survival of bacteria. Bactericidal drugs kill bacteria, while bacteriostatic drugs inhibit their growth. When used together, the bacteriostatic drug may interfere with the bactericidal drug's ability to kill bacteria, reducing its effectiveness. This results in an antagonistic effect, where the drugs work against each other and diminish the overall antimicrobial activity.

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  • 31. 

    Amoxicillin is in the group?

    • Penicilline

    • Macrolid

    • Fluroquinolone

    • Methonidazol

    Correct Answer
    A. Penicilline
    Explanation
    Amoxicillin belongs to the group of penicillins. Penicillins are a class of antibiotics that are derived from the fungus Penicillium. They are effective against a wide range of bacterial infections and work by inhibiting the growth of bacteria. Amoxicillin is commonly used to treat various infections such as respiratory tract infections, urinary tract infections, and skin infections. It is important to note that penicillins can cause allergic reactions in some individuals, so it is essential to be aware of any allergies before taking this medication.

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  • 32. 

    Mandibular canal has the same meaning to?

    • Inferior dental canal

    • Warton canal

    • Bifid canal

    • Warton canal and Bifid canal

    Correct Answer
    A. Inferior dental canal
    Explanation
    The mandibular canal is the anatomical structure within the mandible that houses the inferior alveolar nerve and blood vessels. The inferior dental canal is another term used to refer to the same structure. Therefore, the correct answer is "Inferior dental canal." The other options, Warton canal and Bifid canal, are not synonymous with the mandibular canal.

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  • 33. 

    In this OPG, choose correct name according to the mention spot?

    • Nasal cavity

    • Maxillary sinus

    • Maxillary bone

    • Inferior concha

    Correct Answer
    A. Nasal cavity
    Explanation
    The question asks for the correct name according to the mention spot, and the mention spot is "Nasal cavity." Therefore, the correct answer is "Nasal cavity."

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  • 34. 

    In this OPG, choose correct name according to the mention spot?

    • Coronoid process

    • Temporal bone

    • Condylar process

    • Inferior concha

    Correct Answer
    A. Coronoid process
    Explanation
    The correct answer is "Coronoid process". The coronoid process is a bony projection located on the anterior surface of the mandible. It serves as an attachment point for muscles involved in chewing and jaw movement. The other options mentioned, such as the temporal bone, condylar process, and inferior concha, are not directly related to the coronoid process.

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  • 35. 

    In this xray, choose the correct name according to the mention spot?

    • Naso-palatine canal

    • Maxilary bone canal

    • Hard Palate suture

    • Alveolar process

    Correct Answer
    A. Naso-palatine canal
    Explanation
    The correct answer is Naso-palatine canal. In the given x-ray, the mentioned spot corresponds to the naso-palatine canal. The naso-palatine canal is a small canal that connects the nasal cavity to the oral cavity. It is located in the midline of the hard palate, which is the bony structure that forms the roof of the mouth. The other options mentioned, such as maxillary bone canal, hard palate suture, and alveolar process, do not correspond to the mentioned spot in the x-ray.

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  • 36. 

    What is this xray is called?

    • Periapical xray

    • Bitewing xray

    • Occlusal xray

    • Cephalometric xray

    Correct Answer
    A. Periapical xray
    Explanation
    A periapical x-ray is a type of dental x-ray that captures the entire tooth from the crown to the root. It is used to diagnose and monitor dental conditions such as tooth decay, abscesses, and root canal infections. This x-ray provides a detailed view of the tooth structure, surrounding bone, and the root tip, helping dentists identify any abnormalities or issues. It is commonly used in routine dental examinations and treatment planning.

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  • 37. 

    What is this xray is called?

    • Bitewing xray

    • Periapical xray

    • Occlusal xray

    • Cephalometric xray

    Correct Answer
    A. Bitewing xray
    Explanation
    A bitewing xray is a type of dental xray that is used to detect cavities and assess the health of the teeth and surrounding structures. It is called a "bitewing" xray because the patient bites down on a wing-shaped device that holds the film in place. This xray provides a clear view of the upper and lower teeth in a specific area, allowing the dentist to identify any decay or abnormalities. It is commonly used for routine check-ups and monitoring the progression of dental conditions.

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  • 38. 

    What is this xray is called?

    • No answer

    • Panoramic xray

    • Periapical xray

    • Occlusal xray

    Correct Answer
    A. No answer
  • 39. 

    Which one is indicated inflammatory resorption?

    • B

    • A

    • C

    Correct Answer
    A. B
    Explanation
    Inflammatory resorption refers to the process of resorption or breakdown of tissue due to inflammation. Based on the given options, option B is indicated as the correct answer. However, without additional context or information, it is difficult to provide a specific explanation for why option B is the correct answer.

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  • 40. 

    An absolute contraindication for extraction of teeth is:?

    • MI after 4 months

    • Hypertension

    • Hypotension

    • Thyrotoxicosis

    Correct Answer
    A. MI after 4 months
    Explanation
    An absolute contraindication for extraction of teeth is a recent myocardial infarction (MI) within the past 4 months. This is because the healing process after an MI takes time, and undergoing a tooth extraction procedure could potentially put additional stress on the cardiovascular system, increasing the risk of complications. It is important to allow sufficient time for the patient to recover from a recent MI before performing any non-essential dental procedures.

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  • 41. 

    Elective dental extraction on a patient who has had a MI, 2 months prior are best:?

    • Postponed until at least till 6 months have relapsed

    • Performed under oral sedative.

    • Performed using epinephrine free injection.

    • Performed using oral sedative and epinephrine free injection.

    Correct Answer
    A. Postponed until at least till 6 months have relapsed
    Explanation
    Elective dental extraction should be postponed until at least 6 months have passed after a patient has had a myocardial infarction (MI). This is because the risk of complications, such as another cardiac event, is higher in the immediate months following an MI. It is important to allow the patient's body enough time to heal and stabilize before undergoing any elective dental procedures.

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  • 42. 

    One day after complete mouth extraction blue black spots are seen on neck of patient. These spots indicate:?

    • Postoperative ecchymosis

    • Therombocytopenic purpura

    • Impaired blood circulation

    • Cellulitis

    Correct Answer
    A. Postoperative ecchymosis
    Explanation
    The blue black spots on the neck of the patient after complete mouth extraction indicate postoperative ecchymosis. Ecchymosis is the medical term for bruising, which occurs when there is bleeding under the skin. In this case, the extraction procedure may have caused some minor bleeding, resulting in the appearance of these spots on the neck. It is a common and expected side effect after surgery or dental procedures.

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  • 43. 

    In extraction best time to administer analgesic is:?

    • Before anesthesia wears off

    • Prior to extraction

    • When pain is moderate to severe

    • After anesthesia wears off

    Correct Answer
    A. Before anesthesia wears off
    Explanation
    The best time to administer an analgesic in extraction is before anesthesia wears off because it ensures that the patient does not experience any pain or discomfort during the procedure. Administering the analgesic prior to the anesthesia wearing off allows for effective pain management and ensures that the patient remains comfortable throughout the extraction process.

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  • 44. 

    All are factors delay wound healing, except:

    • Healthy with proteins, vit. A, Vit. C, Zn, Fe

    • Infection

    • Systemic diseases

    • Ionizing radiation

    Correct Answer
    A. Healthy with proteins, vit. A, Vit. C, Zn, Fe
    Explanation
    The given answer is "Healthy with proteins, vit. A, Vit. C, Zn, Fe." This is because proteins, vitamin A, vitamin C, zinc, and iron are all important factors that contribute to wound healing. They play a crucial role in the formation of new tissue, collagen synthesis, and immune function. Infection, systemic diseases, and ionizing radiation, on the other hand, can all impair the healing process by causing inflammation, compromising the immune system, and damaging cells.

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  • 45. 

    Extraoral assessment includes inspection of the:

    • Face, head, and neck

    • Head and buccal mucosa

    • Floor of the mouth, hard and soft palate

    • Any enlargement on lymph node

    Correct Answer
    A. Face, head, and neck
    Explanation
    Extraoral assessment refers to the examination of the areas outside of the oral cavity. This includes inspecting the face, head, and neck for any abnormalities or signs of disease. By examining these areas, healthcare professionals can identify any potential issues such as swelling, asymmetry, or skin changes that may indicate underlying health problems. Therefore, the correct answer is face, head, and neck as these are the areas that are assessed during an extraoral examination.

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  • 46. 

    All are infectious diseases, except:

    • Diabetes

    • Covid-19

    • Hepatitis

    • AIDS

    Correct Answer
    A. Diabetes
    Explanation
    Diabetes is not an infectious disease. It is a metabolic disorder characterized by high blood sugar levels due to the body's inability to produce or effectively use insulin. In contrast, Covid-19, Hepatitis, and AIDS are all infectious diseases caused by viruses that can be transmitted from person to person.

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  • 47. 

    Correct concentration of disinfectant agent for Ethyl or isopropyl alcohol is:

    • 70% - 90%

    • 90% - 100%

    • Below 70%

    • Above 90%

    Correct Answer
    A. 70% - 90%
    Explanation
    The correct concentration of disinfectant agent for Ethyl or isopropyl alcohol is 70% - 90%. This range is considered effective for killing bacteria and viruses on surfaces. Concentrations below 70% may not be strong enough to effectively disinfect, while concentrations above 90% may evaporate too quickly and not have enough contact time to kill pathogens. Therefore, a concentration between 70% and 90% strikes a balance between effectiveness and practicality.

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  • 48. 

    All are true about the preparation of surgeon before surgical procedure, except:

    • Keep hands below waist all the time

    • Use of PPE

    • Disinfection of hands

    • Sterilized gloves

    Correct Answer
    A. Keep hands below waist all the time
    Explanation
    The preparation of a surgeon before a surgical procedure involves several important steps to ensure a safe and sterile environment. These include the use of personal protective equipment (PPE) to prevent contamination, disinfection of hands to maintain hygiene, and the use of sterilized gloves to prevent infection. However, keeping hands below the waist all the time is not a necessary step in the preparation process.

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  • 49. 

    Surgical blade number 11 is ideally used:

    • For small stab incision, incising an abscess.

    • Due to space restriction at labial mucosa.

    • To excise tissue flap at maxillary tuberosity.

    • For skin incision and posteriors aspect of teeth.

    Correct Answer
    A. For small stab incision, incising an abscess.
    Explanation
    Surgical blade number 11 is ideally used for small stab incisions and incising an abscess. This blade is designed to provide precise and controlled incisions, making it suitable for procedures that require a small and accurate cut, such as draining an abscess. It may not be the best choice for excising tissue flaps or making skin incisions on the posterior aspect of teeth, as these procedures may require different blade designs or sizes. Additionally, the mention of space restriction at labial mucosa does not provide enough information to determine if blade number 11 would be the ideal choice for that specific situation.

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