MCQs 7dd For Final Exam

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  • 1/1530 Questions

    តើវិធីណាមួយដែលគួរប្រើដើម្បីកាត់បន្ថយគ្រោះថ្នាក់នៃការប៉ះទៅនឹងចំហាយបារ៉ត (mercury vapour) 1. ការអប់រំដល់បុគ្គលិក 2. ការប្រើរបាំងប្លាស្ទិក (Rubber dam) 3. ការបឺតស្រូបយ៉ាងរហ័ស 4. ម៉ាស់ពាក់

    • (1) និង (3) ត្រឹមត្រូវ
    • (1) , (2) និង (3) ត្រឹមត្រូវ
    • (2) និង (4) ត្រឹមត្រូវ
    • (4) ត្រឹមត្រូវ
    • ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ
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About This Quiz

This quiz titled 'MCQs 7DD For Final Exam' covers key topics in oral surgery, focusing on procedures like tooth extraction, flap design, and tissue management.

Oral Surgery Quizzes & Trivia

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  • 2. 

    អ្នកជំងឺម្នាក់អាយុ ១៧ឆ្នាំ រអ៊ូរទាំអំពីគ្រុនក្តៅ អស់កំលាំង និងរលាកបំពង់ក។ ការពិនិត្យតាមគ្លីនិកបង្ហាញថាអ្នកជំងឺមានជំងឺឡើងកូនកណ្តុរទាំងសងខាង។ អ្នកកត់សំគាល់ឃើញថាមានឡើងពងក្រហមដ៏ច្រើនលើក្រអូមមាត់ទន់ និង មានការរីកប៉ោងត្រង់អណ្តាត និង Orapharyngeal ។ តើរោគវិនិច្ឆ័យនៃរោគសញ្ញាទាំងនេះទំនងជាអ្វី?

    • Infectious mononucleosis

    • Herpangine

    • Acute lymphonodula pharyngitis

    • Primary herpetic gingivostomatitis

    • Non- hodgkin’s lymphoma

    Correct Answer
    A. Infectious mononucleosis
    Explanation
    The given symptoms of a 17-year-old patient, including sore throat, swollen tonsils, and enlarged lymph nodes, are indicative of infectious mononucleosis. This viral infection is commonly caused by the Epstein-Barr virus (EBV) and commonly affects teenagers and young adults. The presence of multiple symptoms such as fatigue, fever, and swollen spleen further support the diagnosis of infectious mononucleosis. The other options, including herpangine, acute lymphonodula pharyngitis, primary herpetic gingivostomatitis, and non-Hodgkin's lymphoma, do not align with the given symptoms and patient demographic.

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  • 3. 

    ការកន្រ្ដាក់នៃសាច់ដុំ eternal (lateral) pterygoid បានទាញ disc នៃសន្លាក់ temporomandibular ៖

    • Forward and laterally

    • Forward and medially

    • Backward and medially

    • Backward and laterally

    • គ្មានចម្លើយណាមួយត្រឹមត្រូវ

    Correct Answer
    A. Forward and laterally
    Explanation
    The correct answer is "forward and laterally". The movement of the disc of the temporomandibular joint is described as being pulled forward and to the side by the action of the lateral pterygoid muscle. This movement allows for the opening of the jaw.

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  • 4. 

    Radiolucent lesions នៃឆ្អឹងថ្គាមលើឬក្រោមអាចត្រូវគេមើលឃើញនៅក្នុងៈ 1. hyperparathyroidism 2. multiple myeloma 3. fibrous dysplasia 4. hyperthyroidism

    • (1) , (2) និង (3) ត្រឹមត្រូវ

    • (1) និង (3) ត្រឹមត្រូវ

    • (2) និង (4) ត្រឹមត្រូវ

    • (4) ត្រឹមត្រូវ

    • ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ

    Correct Answer
    A. (1) , (2) និង (3) ត្រឹមត្រូវ
    Explanation
    Radiolucent lesions can be seen in hyperparathyroidism, multiple myeloma, and fibrous dysplasia. Therefore, the correct answer is (1), (2), and (3).

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  • 5. 

    អ្នកជម្ងឺអាយុ ២៩ឆ្នាំ មានប្រវត្ត ហើមក ខាងស្តាំ និងឈឺមុនការហូបអារហារ បន្តិច។ តាមការពិនិត្យនៅគ្លីនីក តើវិធីសាស្រ្តមួយណាក្នុងការរក diagnostic ដែលចង្អុរបង្ហាញប្រាប់ ៖

    • Occlusal radiograph

    • Panoramic radiograph

    • កាត់ជាលិកាយកទៅធ្វើ biopsy (Ecisional biopsy)

    • C.T. scan

    • បូមនឹងម្ជុលតូចយកទៅធ្វើ biopsy (Fine needle aspiration biopsy)

    Correct Answer
    A. Occlusal radiograph
    Explanation
    Occlusal radiograph is the correct answer because it is a diagnostic technique that can be used to identify dental issues such as cavities, fractures, and impacted teeth. This type of radiograph provides a detailed view of the upper and lower jaw, allowing dentists to assess the alignment of the teeth and the overall condition of the oral structures. It is particularly useful for evaluating problems in the posterior region of the mouth, which is consistent with the patient's symptoms of pain and swelling in the lower jaw.

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  • 6. 

    ស្នាមចុចៗជាច្រើន (Multiple punched-out) Raliolucencies នៃឆ្អឹងក្បាល និងថ្គាម គេឃើញមានភាគច្រើននលើៈ

    • Multiple myeloma

    • Metastatic carinoma

    • Plasmacytoma

    • Chondrosarcoma

    • Osteosarcoma

    Correct Answer
    A. Multiple myeloma
    Explanation
    Multiple myeloma is a type of cancer that affects plasma cells in the bone marrow. It is characterized by the presence of multiple punched-out lesions in the skull and skeleton. These lesions appear as areas of bone destruction on imaging studies. Other conditions like metastatic carcinoma, plasmacytoma, chondrosarcoma, and osteosarcoma can also cause bone lesions, but multiple myeloma is the most common cause of multiple punched-out lytic lesions in the skull and skeleton. Therefore, the correct answer is multiple myeloma.

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  • 7. 

    ការប៉ះធ្មេញលើសរាងធ្មេញធម្មជាតិ ផ្ដល់ឧកាសអោយៈ 1. បង្កើនឲ្យplaque ជាប់ស្អិតរឹតតែខ្លាំង 2. កោសសំអាតយកplaque ចេញមានកំរិត (មិនអស់) 3. បង្កើនឲ្យជាប់កំទេចកំទីចំណីអាហារ 4. បង្កើននិងងាយស្រួលរងឥទ្ធិពលឲ្យមានរោគពុកធ្មេញ

    • ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ

    • (1) , (2) និង (3) ត្រឹមត្រូវ

    • (1) និង (3) ត្រឹមត្រូវ

    • (2) និង (4) ត្រឹមត្រូវ

    • (4) ត្រឹមត្រូវ

    Correct Answer
    A. ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ
    Explanation
    The correct answer is (4) ត្រឹមត្រូវ. This is because increasing plaque buildup and making it difficult to remove (1) and (2) can lead to an increased risk of dental problems. Additionally, increasing plaque buildup can also make it easier for harmful bacteria to thrive and cause tooth decay and gum disease (4). Therefore, both (2) and (4) are correct explanations for the given statement.

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  • 8. 

    នៅពេលប្រើ ultra high speed សំភារៈឆាប (កាត់) ធ្មេញ ក្នុងការធ្វើ cavity preparation កំដៅធ្វើអោយកើតឡើងផ្ទាល់ ទាក់ទងទៅនឹង៖ 1. រយៈពេលនៃការឆាប រឺ កាត់ 2.ទំហំ ល្បឿន និង ភាពមុតនៃ Bur 3.ការប្រើប្រាស់ spray ខ្យល់ និង ទឹក 4. Eisting pulp pathology

    • (1) , (2) និង (3) ត្រឹមត្រូវ

    • (1) និង (3) ត្រឹមត្រូវ

    • (2) និង (4) ត្រឹមត្រូវ

    • (4) ត្រឹមត្រូវ

    • ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ

    Correct Answer
    A. (1) , (2) និង (3) ត្រឹមត្រូវ
    Explanation
    The correct answer is (1), (2), and (3) are all correct. When using ultra high speed for cavity preparation, factors such as the duration of the procedure, the size, speed, and aggressiveness of the bur, and the use of spray cooling and water all contribute to achieving the desired outcome. Therefore, all three options are relevant and necessary for successful cavity preparation.

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  • 9. 

    The following are the causes of difficult mask ventilation or intubation with pathologic states except

    • Limited mobility of the neck

    • Arthritis and ankylosis

    • Laryngeal abnormalities

    • Endocrinopathies

    Correct Answer
    A. Limited mobility of the neck
    Explanation
    The correct answer is "Limited mobility of the neck." This answer is correct because limited mobility of the neck is not a cause of difficult mask ventilation or intubation with pathologic states. Difficult mask ventilation or intubation can be caused by factors such as arthritis and ankylosis, laryngeal abnormalities, and endocrinopathies. However, limited mobility of the neck does not directly contribute to difficulty in mask ventilation or intubation.

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  • 10. 

    Preoperative vit K is indicated in patients with:

    • Liver disease

    • Diabetes mellitus

    • Chronic pneumonitis

    • Accuracy

    Correct Answer
    A. Liver disease
    Explanation
    Preoperative vitamin K is indicated in patients with liver disease. Liver disease can impair the production of clotting factors, leading to a deficiency of vitamin K-dependent clotting factors. Vitamin K supplementation helps to restore the levels of these clotting factors, reducing the risk of bleeding during surgery. Diabetes mellitus, chronic pneumonitis, and accuracy do not directly affect the production or function of clotting factors, so preoperative vitamin K is not indicated in these conditions.

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  • 11. 

    The MOST COMMON problem arising from premature extraction of deciduous molars is the loss of ?

    • Arch length

    • Facial contour

    • Vertical height

    • Sibilant speech sounds

    Correct Answer
    A. Arch length
    Explanation
    Premature extraction of deciduous molars can lead to the loss of arch length. Deciduous molars play a crucial role in maintaining space for permanent teeth. When they are extracted prematurely, the adjacent teeth may drift into the empty space, causing crowding and a decrease in arch length. This can lead to orthodontic problems and the need for further treatment to correct the misalignment of teeth. Facial contour, vertical height, and sibilant speech sounds are not directly affected by the premature extraction of deciduous molars.

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  • 12. 

    Proximal caries confined to enamel:?

    • Prevention.

    • Observation

    • Restore with G I

    • None

    Correct Answer
    A. Prevention.
    Explanation
    The correct answer is Prevention. This means that when proximal caries are confined to the enamel, the best course of action is to focus on preventing further decay. This can be done through proper oral hygiene practices, such as regular brushing and flossing, as well as regular dental check-ups and cleanings. By preventing the progression of caries in the enamel, more invasive treatments like restoration with G I can be avoided.

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  • 13. 

    Secondary dentine occur due to:?

    • All of the above.

    • Occlusal trauma.

    • Recurrent caries.

    • Attrition dentine.

    Correct Answer
    A. All of the above.
    Explanation
    Secondary dentine can occur due to various factors, including occlusal trauma, recurrent caries, and attrition dentine. Occlusal trauma refers to excessive forces on the teeth during biting and chewing, which can lead to the formation of secondary dentine as a protective mechanism. Recurrent caries, which is the development of new cavities around existing dental restorations, can also stimulate the formation of secondary dentine. Additionally, attrition dentine, which is the wearing down of tooth structure due to friction and grinding, can trigger the deposition of secondary dentine. Therefore, all of the listed factors can contribute to the occurrence of secondary dentine.

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  • 14. 

    Old patient came to replace all old amalgam filling he had sever occlusal attrition the best replacement is:?

    • Full crowns.

    • Composite.

    • Amalgam.

    • Cast metal restoration.

    Correct Answer
    A. Full crowns.
    Explanation
    The best replacement for the old amalgam fillings in a patient with severe occlusal attrition would be full crowns. Full crowns provide better coverage and protection for the heavily worn teeth, as they cover the entire tooth surface. Composite fillings may not be strong enough to withstand the forces of occlusion in this case. Amalgam fillings may not provide adequate coverage and may not be aesthetically pleasing. Cast metal restorations may be an option, but full crowns would be a more conservative and esthetic choice.

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  • 15. 

    Periodontal ligament fibers in the middle third of the root is:?

    • Oblique.

    • Horizontal.

    • Transeptal

    • All are corrects

    Correct Answer
    A. Oblique.
    Explanation
    The correct answer is oblique because periodontal ligament fibers in the middle third of the root are arranged in an oblique direction. This arrangement allows for flexibility and resistance to forces applied to the tooth, helping to absorb and distribute the forces evenly during chewing and biting. The oblique orientation of the fibers also helps to provide stability to the tooth within the socket.

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  • 16. 

    Periodontally involved root surface must be root planed to:?

    • Remove the attached plaque and calculus and Remove the necrotic cementum.

    • Remove the attached plaque and calculus.

    • Remove the necrotic cementum.

    • Change the root surface to become biocompatible

    Correct Answer
    A. Remove the attached plaque and calculus and Remove the necrotic cementum.
    Explanation
    Periodontally involved root surfaces often accumulate plaque and calculus, which can contribute to further inflammation and disease progression. Therefore, root planing is necessary to remove these deposits and promote healing. Additionally, the necrotic cementum, which is a result of the inflammatory process, needs to be removed to allow for proper healing and regeneration of the periodontal tissues. By removing both the attached plaque and calculus and the necrotic cementum, the root surface can be prepared for optimal healing and restoration of biocompatibility.

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  • 17. 

    Spontaneous pulpal pain is indicative of:?

    • Irreversible pulpitis.

    • Reversible pulpitis.

    • Neurotic pulp.

    • Hyperplastic pulp.

    Correct Answer
    A. Irreversible pulpitis.
    Explanation
    Spontaneous pulpal pain is a type of toothache that occurs without any external stimulus, such as hot or cold temperature. This type of pain is typically a sign of irreversible pulpitis, which is inflammation of the dental pulp that cannot be reversed. In irreversible pulpitis, the dental pulp becomes damaged or infected, leading to constant or intermittent pain. Reversible pulpitis, neurotic pulp, and hyperplastic pulp are not associated with spontaneous pulpal pain.

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  • 18. 

    Which material has best biocompatibility Intraorally:?

    • Titanium.

    • Cobalt chromium.

    • Nickel chromium.

    • Gold Palladium

    Correct Answer
    A. Titanium.
    Explanation
    Titanium is known for its excellent biocompatibility, especially when used intraorally. It is widely used in dental implants and other oral prostheses due to its ability to integrate well with the surrounding bone and soft tissues without causing any adverse reactions or rejection. Titanium is also corrosion-resistant, which further enhances its biocompatibility and longevity in the oral environment. Cobalt chromium and nickel chromium alloys are commonly used in dentistry but may cause allergic reactions in some individuals. Gold Palladium is also biocompatible but is less commonly used in intraoral applications compared to titanium.

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  • 19. 

    នៅលើ Maxilla តើធ្មេញមួយណាដែល ដុះលានឆ្លងកាត់ឆ្អឹងក្រអូម ហើយបង្ហាញហាក់បីដូចជាមាន palatal abscess នៅក្រអូមមាត់ 1. ធ្មេញមុខទីពីរ (lateral incisor) 2. ថ្គាមតូចទីមួយ (first premolar) 3. ថ្គាមធំទីមួយ (first molar) 4. ធ្មេញមុខទីមួយ (central incisor) 5. ថ្គាមធំទីបី (third molar)"?

    • (1) និង (3) ត្រឹមត្រូវ

    • (1) និង (2) ត្រឹមត្រូវ

    • (2) និង (3) ត្រឹមត្រូវ

    • (2) និង (4) ត្រឹមត្រូវ

    • (1) និង (5) ត្រឹមត្រូវ

    Correct Answer
    A. (1) និង (3) ត្រឹមត្រូវ
    Explanation
    The correct answer is (1) and (3) because the question states that there is a palatal abscess on the maxilla. The maxilla is the upper jaw, and the palatal region refers to the roof of the mouth. The lateral incisor (ធ្មេញមុខទីពីរ) and the first molar (ថ្គាមធំទីមួយ) are both located on the maxilla and in the palatal region, making them the most likely teeth to be affected by the abscess. Therefore, the correct answer is (1) and (3).

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  • 20. 

    អ្នកជំងឺម្នាក់ដែលប្រើប្រាស់ថ្នាំ Cortico-steroid ព្យាបាលរយៈពេលយូរ រហូតមកដល់បច្ចុប្បន្នអាចបណ្តាល៖?

    • បន្ថយភាពធន់ទ្រាំទៅនឹងភាពតានតឹងសរីរាង្គ

    • បង្កើនរយៈពេលហូរឈាម

    • បន្ថយការឈឺចាប់

    • បង្កើនអត្រា metabolic

    • មានកំរិតខ្ពស់នៃ plasmatic cortisol

    Correct Answer
    A. បន្ថយភាពធន់ទ្រាំទៅនឹងភាពតានតឹងសរីរាង្គ
    Explanation
    The correct answer is "បន្ថយភាពធន់ទ្រាំទៅនឹងភាពតានតឹងសរីរាង្គ" which translates to "Improve resistance to stress". Cortico-steroids are known to have anti-inflammatory and immunosuppressive effects, which can help the body cope with stress and reduce inflammation. This can lead to an improvement in the body's ability to handle stress and maintain homeostasis.

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  • 21. 

    គុណវិបត្តិចំបងរបស់ Cervical Headgear ដែលប្រើក្នុងការព្យាបាលពត់តម្រង់មួយចំនួន គឺ៖?

    • Extrusion ទៅលើធ្មេញថ្គាមមុខខាងលើ

    • Intrusion ទៅលើធ្មេញចង្កូមខាងលើ

    • Extrusion ទៅលើធ្មេញមុខខាងលើ

    • ប៉ះពាល់ទៅលើទម្រង់ឆ្អឹង ក

    • ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ

    Correct Answer
    A. Extrusion ទៅលើធ្មេញថ្គាមមុខខាងលើ
    Explanation
    The correct answer is Extrusion ទៅលើធ្មេញថ្គាមមុខខាងលើ. This means that the cervical headgear is used to push the upper molars backwards.

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  • 22. 

    What sizes of the sutures that commonly used in oral cavity?

    • 3/0 & 4/0

    • 2//0

    • 4/0 & 5/0

    • 36678

    • 36708

    Correct Answer
    A. 3/0 & 4/0
    Explanation
    The correct answer is 3/0 & 4/0. Sutures are commonly used in the oral cavity for closing wounds or incisions. The sizes of sutures are denoted by numbers, with smaller numbers indicating larger sutures. In this case, 3/0 and 4/0 are the sizes commonly used in the oral cavity. These sizes are appropriate for suturing delicate tissues in the mouth, providing optimal healing and minimizing scarring.

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  • 23. 

    តើ NOE Fracture ចូលរួមផ្សំដោយឆ្អឹងណាខ្លះ ?

    • Frontal bone,nasal bone, maxillary bone, lacrimal bone, ethmoid bone and sphenoid bone.

    • Frontal bone,nasal bone, maxillary bone.

    • Frontal bone,nasal bone, maxillary bone, lacrimal bone.

    • Nasal bone,eth moid bone and sphenoid bone.

    Correct Answer
    A. Frontal bone,nasal bone, maxillary bone, lacrimal bone, ethmoid bone and sphenoid bone.
    Explanation
    NOE Fracture refers to a fracture involving the bones of the nose, orbit, and ethmoid bone. The correct answer includes all the bones that are commonly involved in NOE fractures, including the frontal bone, nasal bone, maxillary bone, lacrimal bone, ethmoid bone, and sphenoid bone.

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  • 24. 

    For a patient of osteomyelitis who is allergic to penicillin, all of the following drugs are recommended as 2nd and 3rd choices except :

    • Erythromycin

    • Clindamycin

    • Cephalosporin

    • Sulfa drugs

    Correct Answer
    A. Erythromycin
    Explanation
    Erythromycin is not recommended as a 2nd or 3rd choice for a patient with osteomyelitis who is allergic to penicillin. The other three options (clindamycin, cephalosporin, and sulfa drugs) are recommended as alternative choices for treating osteomyelitis in patients with penicillin allergy.

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  • 25. 

    Fixation with pack in maxillary sinus is :

    • To protect mucosal covering of maxillary sinus

    • To support comminuted fracture of the body of zygomatic complex

    • To support and reconstitute comminuted orbital floor fracture

    • To support comminuted fracture of the body of zygomatic complex and To support and reconstitute comminuted orbital floor fracture are correct

    Correct Answer
    A. To protect mucosal covering of maxillary sinus
    Explanation
    The fixation with a pack in the maxillary sinus is done to protect the mucosal covering of the maxillary sinus. This is because the maxillary sinus is lined with a delicate mucosal membrane that can easily be damaged during surgery or trauma. By placing a pack in the sinus, it provides a barrier between the delicate mucosa and any instruments or foreign bodies, helping to prevent damage and promote healing.

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  • 26. 

    The following are the moderate allergy symptoms, except….

    • Apnea

    • Skin Rash

    • Itchy, watery eyes

    • Congestion

    • Difficulty breathing

    Correct Answer
    A. Apnea
    Explanation
    Apnea is the exception among the given moderate allergy symptoms. Apnea refers to the temporary cessation of breathing, which is not typically associated with allergies. On the other hand, skin rash, itchy watery eyes, congestion, and difficulty breathing are commonly experienced as moderate allergy symptoms.

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  • 27. 

    In which one of the following, vesicles and bullae are not seen

    • Lupus erythematosis

    • Pemhigus

    • Hepes zoster

    • Herpes simplex

    Correct Answer
    A. Lupus erythematosis
    Explanation
    Vesicles and bullae are fluid-filled blisters that are commonly seen in various skin conditions. Lupus erythematosus is an autoimmune disease that primarily affects the skin, causing a characteristic rash but does not typically present with vesicles or bullae. On the other hand, pemphigus, herpes zoster, and herpes simplex are all known to cause vesicles and bullae as part of their clinical presentation.

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  • 28. 

    Occlusal disease is the deformation or disturbances of function of any structure with in the masticatory system that are in disequilibrium with a harmonious interrelationship between:

    • TMJs, Masticatory muscle, and occluding surface of the teeth

    • TMJs, Masticatory muscle, and periodontium

    • TMJs, Masticatory muscle, and alveolar bone

    • TMJs, periodontium and alveolar bone

    Correct Answer
    A. TMJs, Masticatory muscle, and occluding surface of the teeth
    Explanation
    Occlusal disease refers to any deformation or disturbances in the masticatory system that are not in harmony with the interrelationship between the TMJs (temporomandibular joints), masticatory muscles, and occluding surface of the teeth. This means that there is an imbalance or dysfunction in the way these structures work together, leading to issues such as misalignment, grinding, or clenching of the teeth. The other options do not accurately describe the interrelationship and components involved in occlusal disease.

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  • 29. 

    Muscles of facial expression are innervated by

    • Facial nerve (CN VII)

    • Trochlear nerve (CN IV)

    • Trigeminal nerve (CN V)

    • Abducen nerve (CN VI)

    Correct Answer
    A. Facial nerve (CN VII)
    Explanation
    The muscles of facial expression are innervated by the facial nerve (CN VII). This nerve is responsible for controlling the movement of the muscles that enable facial expressions such as smiling, frowning, and raising eyebrows. The facial nerve also innervates the muscles involved in closing the eyes, wrinkling the forehead, and moving the lips. This is why damage or dysfunction of the facial nerve can result in facial paralysis or weakness on one side of the face.

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  • 30. 

    មនុស្សស្រីម្នាក់អាយុ២៩ឆ្នាំមានវត្តមាននៅក្នុងផ្នែកសង្គ្រោះបន្ទាន់ ED Emergency Departmentដោយមានរបួស ផ្នែកក្រោ យនៃក្បាល។ អ្នកជំងឺត្អូញត្អែថាឈឺក្បាលខ្លាំង ហើយគេបានបញ្ជូនគាត់ទៅ ផ្នែកថត MRI បង្ហាញថាមានហូរឈាម (Bleeding ) នៅក្នុងលលាដ៏ក្បាល ហើយ CT scan បង្ហាញ ថាមានបែកលលាដ៏ក្បាល។ សួរថាតើ Cranial nuclei នៃ Thalamus ដែលពាក់ព័ន្ធទៅនឹង Mediating facial sensation និងការឈឺចាប់ណាខ្លះ?

    • Ventral lateral nuclei

    • Ventral posterior medial nuclei (PM)

    • Ventral anterior nucleus

    • Lateral geniculate. nucleus

    • Ventral posterior lateral nuclei

    Correct Answer
    A. Ventral lateral nuclei
    Explanation
    The cranial nuclei of the thalamus that are involved in mediating facial sensation and some aspects of facial movement are the ventral lateral nuclei.

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  • 31. 

    តើfiber groups PDL (ជាលិកាជុំវិញធ្មេញ) ណាមួយដែលទាក់ទងនឹងcentral incisor លើកលែងតែមួយ ?

    • Interradicular

    • Apical

    • Oblique

    • Horizontal

    • Alveolar crest

    Correct Answer
    A. Interradicular
    Explanation
    The correct answer is Interradicular. This refers to the area between the roots of a tooth. In the context of fiber groups, the interradicular fibers are the ones that connect the periodontal ligament (PDL) to the central incisor tooth. These fibers help to support and stabilize the tooth within the jawbone.

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  • 32. 

    Insulin ផលិតមកពីក្រពេញមួយណា?

    • None of the above

    • Mecrocrin

    • Acinar

    • Tubular

    • Mecrocrin and Acina

    Correct Answer
    A. None of the above
    Explanation
    The correct answer is "None of the above" because the options provided (Mecrocrin, Acinar, Tubular, Mecrocrin and Acina) do not accurately represent the source of insulin. Insulin is produced by the beta cells of the pancreas, which are not represented in any of the given options. Therefore, the correct answer is none of the above.

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  • 33. 

    ឃ្លាទី១ Eeccrine sweat ត្រួតពិនិត្យដោយ cholinergic neurons ឃ្លាទី២ Apocrine sweat glands ផលិតដោយ pheromones

    • ឃ្លាទាំងពីរត្រឹមត្រូវ

    • ឃ្លាទាំងពីរមិនត្រឹមត្រូវ

    • ឃ្លាទី១ត្រូវ ឃ្លាទី២ខុស

    • ឃ្លាទី១ខុស ឃ្លាទី២ត្រូវ

    Correct Answer
    A. ឃ្លាទាំងពីរត្រឹមត្រូវ
    Explanation
    Both eccrine sweat and apocrine sweat glands are correct.

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  • 34. 

    ខាងក្រោមណាមួយជា Transient cessation of breathing

    • Apnea

    • Hypoventilation

    • Dyspnea

    • Hypocapnia

    • Hyperapnea

    Correct Answer
    A. Apnea
    Explanation
    Apnea refers to the transient cessation of breathing. This means that during apnea, a person temporarily stops breathing. This can occur due to various reasons such as blockage in the airway, neurological disorders, or certain medications. Apnea can be dangerous as it can lead to a decrease in oxygen levels in the body, causing symptoms like dizziness, fatigue, and even loss of consciousness. Treatment for apnea may involve lifestyle changes, the use of breathing devices, or surgery in severe cases.

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  • 35. 

    In the definition of epidemiology, 'distribution' refers to:

    • Who, when and where

    • Who

    • When, Where

    • Why, who

    Correct Answer
    A. Who, when and where
    Explanation
    The term 'distribution' in the definition of epidemiology refers to the identification and analysis of the patterns and characteristics of a health-related event or disease in a specific population. This includes understanding who is affected (who), when the event or disease occurs (when), and where it is happening (where). By examining these factors, epidemiologists can gain insights into the causes and risk factors associated with the event or disease, and develop strategies for prevention and control.

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  • 36. 

    ចូរជ្រើសរើសប្រភេទនៃជំងឺឆ្លងមួយ ដែលវានេះធ្វើអោយទន្ដពេទ្យម្នាក់ ប្រឈមនឹង គ្រោះថ្នាក់ (match the infectious disease for which a dentist, is at risk)

    • Hepatitis B

    • Brucellosis

    • Eegionnaire s disease

    • Histoplasmosis

    • Sporotrochosis

    Correct Answer
    A. Hepatitis B
    Explanation
    Dentists are at risk of contracting Hepatitis B because the disease can be transmitted through contact with infected blood or body fluids, which can occur during dental procedures. Dentists often come into contact with patients' blood or saliva, making them susceptible to the virus if proper precautions are not taken. Hepatitis B is a viral infection that can cause liver inflammation and can lead to chronic liver disease or liver cancer if left untreated. Therefore, it is important for dentists to be vaccinated against Hepatitis B and follow strict infection control measures to prevent transmission.

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  • 37. 

    The Discussion section needs to follow from:

    • All are corrects

    • Your results

    • Relate back to your literature review.

    • The existing knowledge about the subject.

    Correct Answer
    A. All are corrects
    Explanation
    The given answer suggests that all of the options mentioned (Discussion section needs to follow from: All are corrects, Your results, Relate back to your literature review, The existing knowledge about the subject) are correct in terms of what should be included in the Discussion section of a research paper. The Discussion section should provide a comprehensive analysis and interpretation of the results obtained, relate these findings to the existing knowledge and literature, and discuss the implications and significance of the research.

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  • 38. 

    Writing your discussion should be:

    • All are corrects

    • Statement of your principal findings

    • Strengths and limitations of your study

    • In relation to other studies, discussing in particular any differences

    Correct Answer
    A. All are corrects
    Explanation
    The given answer states that all options are correct. This implies that all statements in the question are true and valid. The principal finding is that there are multiple correct answers to the question. This suggests that the question may have been designed to test the knowledge and understanding of various concepts or principles. However, without the specific question mentioned, it is not possible to provide a detailed analysis of the strengths and limitations of the study or compare it to other studies.

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  • 39. 

    What are three the type of morphology of denture teeth?

    • Anatomy teeth, semi-anatomy teeth, non-anatomy teeth.

    • Anatomy teeth, semi-anatomy teeth, resin teeth

    • Anatomy teeth, semi-anatomy teeth, porcelain teeth

    • Anatomy teeth, non-anatomy teeth, composite teeth

    Correct Answer
    A. Anatomy teeth, semi-anatomy teeth, non-anatomy teeth.
    Explanation
    The three types of morphology of denture teeth are anatomy teeth, semi-anatomy teeth, and non-anatomy teeth.

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  • 40. 

    ស្ថានភាពនៃ periodontal ដែលរកឃើញក្នុងអាយុ ១៤ ទៅ១៩ឆ្នាំ បង្ហាញអោយឃើញនូវការបាត់បង់ឆ្អឹងបពា្ឈរ (vertical bone loss) ពាក់ពន្ធ័ទៅនឹងថ្គាមធំទី១ និងធ្មេញមុខ៤ គឺ ៖

    • Juvenile gingivitis

    • រោគ desquamative gingivitis

    • Acute necrotizing ulcerative gingivitis

    • Periodontitis ដែលវិវត្តលឿន

    • Periodontitis រ៉ាំរ៉ៃ ដែលទៅមុខលឿន

    Correct Answer
    A. Juvenile gingivitis
    Explanation
    Juvenile gingivitis is the correct answer because it is the only option that specifically mentions vertical bone loss, which is a characteristic feature of periodontal disease in individuals aged 14 to 19. The other options do not mention this specific symptom.

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  • 41. 

    តើជំងឺណាមួយដែលបង្ហាញលក្ខណៈដោយការថយចុះសកម្មភាពខួរឆ្អឹង?

    • Aplastic anemia

    • Thalassemia

    • កើនឡើងមិនប្រក្រតីកោសិកាឈាមក្រហម

    • Pernicious anemia

    • Sickle cell anemia

    Correct Answer
    A. Aplastic anemia
    Explanation
    Aplastic anemia is a condition characterized by the failure of the bone marrow to produce enough new blood cells. This leads to a decrease in red blood cells, white blood cells, and platelets. The decreased production of red blood cells can result in fatigue, weakness, and shortness of breath. Therefore, aplastic anemia can be identified by the decrease in overall blood cell activity, which is indicated by the term "downward trend in hematopoiesis".

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  • 42. 

    គ្មានរោគសញ្ញា (Asymptomatic) ទាំងសង្ខាង (bilateral) រាងដូចសំណាញ់(reticular) ការសាយភាយ (radiating), grayish-white linear lesions នៃ buccal mucosa ភាគច្រើនជាសញ្ញានៃៈ

    • Lichen planus

    • White sponge naevus

    • Pemphigus

    • Discoid lupus erythematosus

    • Erythema multiforme.

    Correct Answer
    A. Lichen planus
    Explanation
    The given description of the lesions as asymptomatic, bilateral, reticular, radiating, and grayish-white linear lesions in the buccal mucosa is consistent with lichen planus. Lichen planus is a chronic inflammatory condition that affects the skin and mucous membranes, including the buccal mucosa. It typically presents with reticular or lace-like white lesions, which may be linear or radiating in pattern. The lesions are usually asymptomatic and can be bilateral. Therefore, lichen planus is the most appropriate answer based on the given description.

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  • 43. 

    ហើមហើយឈឺចាប់ខ្ទោកៗ (Intermittent painful swelling) នៅតំបន់ submandiblar ដែលបង្កើនការឈឺចាប់នៅពេលបាយនោះគឺៈ

    • A blockage of Wharton's duct

    • A ranula

    • Ludwig's angina

    • A blockage of Stensen's duct

    • An epidemic parotitis

    Correct Answer
    A. A blockage of Wharton's duct
    Explanation
    The given correct answer, a blockage of Wharton's duct, is the most likely explanation for the intermittent painful swelling in the submandibular region. Wharton's duct is the main duct that carries saliva from the submandibular gland to the mouth. If this duct becomes blocked, it can cause a buildup of saliva and lead to painful swelling. The other options, such as ranula, Ludwig's angina, a blockage of Stensen's duct, and epidemic parotitis, do not specifically involve the submandibular gland or its ducts.

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  • 44. 

    ធ្មេញធ្គាមទឹកដោះដែលផ្សាជាប់នឹងឆ្អឹង (An ankylosed primary molar) អាចបណ្តាលមកពី៖ 1. ពន្យាពេលក្នុងការដុះនៃធ្មេញ 2. ប្រែប្រួលកំណោងអ័ក្សធ្មេញ 3. ពិបាកនឹងការដកធ្មេញ 4. ដុះលូតហួសនៃ ធ្មេញទល់គ្នា

    • ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ

    • (1) , (2) និង (3) ត្រឹមត្រូវ

    • (1) និង (3) ត្រឹមត្រូវ

    • (2) និង (4) ត្រឹមត្រូវ

    • (4) ត្រឹមត្រូវ

    Correct Answer
    A. ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ
    Explanation
    An ankylosed primary molar can be caused by both factors mentioned in options (1) and (3). Option (1) states that an ankylosed primary molar can occur during the eruption process. Option (3) suggests that extraction of the primary molar can lead to an ankylosed primary molar. Therefore, both options (1) and (3) are correct in explaining the occurrence of an ankylosed primary molar.

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  • 45. 

    ស្រី្តអាយុ ៣២ឆ្នាំ ម្នាក់បានត្អូញត្អែរថាមានជម្ងឺគ្រុន ស្រកទំងន់និងល្អិតល្អើយដៃជើង។ គាត់មានការចេញកន្ទួលនៅម្តុំថ្ពាល់ និងច្រមុះ ព្រមទាំងមានដំបៅulcere មានរាងមិនធម្មតាខ្លះនៅលើ buccal mucosa ។ ការវិនិច្ឆ័យនេះភាគច្រើនគឺ៖

    • Pemphigus

    • Lichen planus

    • Lupus erythematosus

    • Erythema multiforme

    • Bullous pemphigoid

    Correct Answer
    A. Pemphigus
    Explanation
    The given symptoms of weight loss, ulcers, and lesions on the buccal mucosa are consistent with the condition called pemphigus. Pemphigus is an autoimmune disorder that causes blistering and erosions of the skin and mucous membranes. It is characterized by the production of autoantibodies that attack the proteins that hold skin cells together. This leads to the formation of blisters and ulcers. Other conditions listed, such as lichen planus, lupus erythematosus, erythema multiforme, and bullous pemphigoid, may also cause similar symptoms, but pemphigus is the most likely diagnosis based on the given information.

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  • 46. 

    What is the different between Azithromycin and Clarithromycin?

    • Both are classified as Macrolides 2nd generation

    • Azithromycin is more effective than clarithromycin

    • Azithromycin are broad spectrum than Clarithromycin

    • Clarithromycin is nephrotoxic

    Correct Answer
    A. Both are classified as Macrolides 2nd generation
    Explanation
    Both Azithromycin and Clarithromycin are classified as Macrolides 2nd generation, meaning they belong to the same class of antibiotics. This classification is based on their chemical structure and mechanism of action. Therefore, this statement is correct and provides a similarity between the two drugs.

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  • 47. 

    What is hamular notch?

    • The hamular notch is a depression situated between the maxillary tuberosity and the hamulus of medial pterygoid plate.

    • The hamular notch is a depression situated between the maxillary tuberosity and the buccal vestibule

    • The hamular notch is a depression situated between the hamulus of medial pterygoid plate to buccal vestibule

    • The hamular notch is a depression situated between the maxillary tuberosity and the labial frenum

    Correct Answer
    A. The hamular notch is a depression situated between the maxillary tuberosity and the hamulus of medial pterygoid plate.
    Explanation
    The hamular notch is a depression located between the maxillary tuberosity and the hamulus of the medial pterygoid plate.

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  • 48. 

    (7 y/o boy) came to the clinic in the right maxillary central incisor with large pulp exposure:?

    • Pulpotomy with Ca(OH)2.

    • Pulpectomy with Ca(OH)2.

    • Direct pulp capping.

    • Leave it.

    Correct Answer
    A. Pulpotomy with Ca(OH)2.
    Explanation
    The correct answer is Pulpotomy with Ca(OH)2.

    A pulpotomy is a dental procedure that involves removing the infected or inflamed pulp tissue from the crown portion of the tooth. In this case, the 7-year-old boy has a large pulp exposure in his right maxillary central incisor, indicating that the pulp tissue is exposed and likely infected. Pulpotomy with Ca(OH)2 is the appropriate treatment choice as it involves removing the infected pulp tissue and placing a medicated material (Ca(OH)2) to promote healing and prevent further infection. Pulpectomy with Ca(OH)2, direct pulp capping, or leaving it untreated would not be suitable options in this scenario.

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  • 49. 

    Stomatitis ដោយសារ denture អាចរួមផ្សំជាមួយ៖?

    • ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ

    • ការបង្ករោគដោយ candida albicans

    • ជម្ងឺស្ងួតមាត់ (xerostomia)

    • អានាម័យ denture អត់បានគ្រប់គ្រាន់

    • Denture អត់សប់ល្អ

    Correct Answer
    A. ចម្លើយទាំងអស់ខាងលើត្រឹមត្រូវ
    Explanation
    All of the above answers are correct. Stomatitis can be caused by a variety of factors, including candida albicans infection, xerostomia (dry mouth), poor fitting dentures, and inadequate denture hygiene.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 22, 2020
    Quiz Created by
    Raksmey Pich
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