MCQs 121 Periodontology Dr. Sin Sowatha 2019

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  • 1/121 Questions

    Gingival abrasio9nj is caused by:?

    • Faulty brushing
    • Soft tissue friction
    • Tooth malposition
    • High frenal attachment
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About This Quiz

MCQs 121 Periodontology Dr. Sin Sowatha 2019 is a specialized quiz assessing knowledge in periodontology, focusing on key concepts like biologic width, calculus distance, and periodontal treatments. It enhances understanding of periodontal health and precision in dental practice.

Periodontology Quizzes & Trivia

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  • 2. 

    Dental plaque adheres to the tooth surface by?

    • Dextran (insoluble and sticky),

    • Bacteria,

    • Sucrose,

    • Epithelial cells

    Correct Answer
    A. Dextran (insoluble and sticky),
    Explanation
    Dental plaque adheres to the tooth surface through the action of dextran, a substance that is insoluble and sticky. Dextran forms a matrix that allows bacteria and other substances to stick to the tooth, leading to the formation of plaque.

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  • 3. 

    The periodontium consists of all of the following are:?

    • Periodontal ligament, cementum, Gingiva, Alveolar bone

    • Gingiva, dentin

    • Cementum, gingiva, enamal

    • Cementum, Gingiva, Alveolar bone, dental pulp

    • Alveolar bone, cementum, dentin, dental pulp

    Correct Answer
    A. Periodontal ligament, cementum, Gingiva, Alveolar bone
    Explanation
    The periodontium refers to the supporting structures of the teeth, including the periodontal ligament, cementum, gingiva, and alveolar bone. These structures work together to support and maintain the teeth in the jawbone. The periodontal ligament attaches the tooth to the surrounding bone, while the cementum covers the root surface of the tooth. The gingiva, or gums, surround and protect the teeth, and the alveolar bone provides the socket in which the teeth are held.

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  • 4. 

    The distance between the apical extent of calculus and alveolar crest in human periodontal pockets is:?

    • 1.97 mm (=33.16%).

    • 0.2 mm.

    • 3 mm.

    • 4 mm.

    • 0.02 mm.

    Correct Answer
    A. 1.97 mm (=33.16%).
    Explanation
    The distance between the apical extent of calculus and alveolar crest in human periodontal pockets is 1.97 mm, which is equal to 33.16% of the given options. This means that the calculus is located approximately 1.97 mm below the alveolar crest.

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  • 5. 

    The inter-dental aid to be used when the embrasure is filled with inter-dental papilla: ………?

    • Dental floss

    • Wooden tip

    • Plastic tip

    • No, answer correct

    Correct Answer
    A. Dental floss
    Explanation
    When the embrasure is filled with inter-dental papilla, the best inter-dental aid to use is dental floss. Dental floss is a thin thread that can easily slide between teeth and remove plaque and food debris from the inter-dental spaces. It is effective in cleaning the area even when the inter-dental papilla is present, ensuring proper oral hygiene and preventing gum diseases. Wooden tip and plastic tip aids may not be able to reach the inter-dental spaces effectively in this situation.

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  • 6. 

    The earliest clinic sign of chronic gingival inflammation?

    • Bleeding on probing.

    • Erythema.

    • Oedema.

    • Loss of stippling.

    Correct Answer
    A. Bleeding on probing.
    Explanation
    The earliest clinic sign of chronic gingival inflammation is bleeding on probing. This occurs when the gums are inflamed and become more sensitive, causing them to bleed when touched or probed. Erythema refers to redness of the gums, which may occur later in the progression of inflammation. Oedema refers to swelling of the gums, which may also occur later. Loss of stippling, the small dots or depressions on the surface of healthy gums, is another sign of inflammation but typically occurs in more advanced stages.

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  • 7. 

    Gingival abrasion is caused by:?

    • Faulty brushing

    • Soft tissue friction

    • Tooth malposition

    • High frenal attachment

    Correct Answer
    A. Faulty brushing
    Explanation
    Gingival abrasion is caused by faulty brushing. This refers to brushing technique that is too aggressive or uses a toothbrush with hard bristles, causing excessive pressure on the gums. This can lead to the wearing away of the gum tissue and potential damage to the tooth enamel. Soft tissue friction, tooth malposition, and high frenal attachment are not directly related to gingival abrasion.

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  • 8. 

    Order of periodontal treatment?

    • Diagnosis, prognosis and Treatment planning

    • Diagnosis

    • Treatment planning

    • Diagnosis, Treatment planning

    • Prognosis

    Correct Answer
    A. Diagnosis, prognosis and Treatment planning
    Explanation
    The correct order of periodontal treatment is to first diagnose the condition, then determine the prognosis, and finally create a treatment plan. This order ensures that the dentist or periodontist has a clear understanding of the patient's oral health condition, the potential outcomes of the treatment, and can then develop a customized plan to address the specific needs of the patient.

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  • 9. 

    Periodontal disease is any condition which affects the?

    • Tooth supporting tissues

    • Outer structures of the tooth

    • The nerve of the tooth

    • The blood supply to the tooth

    • The enamel and dentine

    Correct Answer
    A. Tooth supporting tissues
    Explanation
    Periodontal disease is a condition that affects the tooth supporting tissues, such as the gums, periodontal ligament, and alveolar bone. This disease is characterized by inflammation and infection of these tissues, leading to gum recession, bone loss, and potentially tooth loss if left untreated. It is caused by the buildup of plaque and tartar on the teeth, which harbor bacteria that can damage the supporting structures. Regular dental hygiene practices, such as brushing, flossing, and professional cleanings, are essential in preventing and managing periodontal disease.

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  • 10. 

    Root planning is:?

    • Removal of disease cementum along with other root deposits.

    • Removal of material Alba and stains from root surface.

    • Removal of soft tissue wall of the periodontal pocket.

    • Removal of calculus and plaque from root surface.

    • Removal of food debris from tooth surface.

    Correct Answer
    A. Removal of disease cementum along with other root deposits.
    Explanation
    Root planning is the process of removing disease cementum along with other root deposits. This procedure helps to eliminate the build-up of harmful substances on the root surface, such as calculus and plaque, which can contribute to periodontal disease. By removing these deposits, the root surface is smoothed and cleaned, promoting healing and preventing further damage to the surrounding tissues.

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  • 11. 

    The earliest clinic sign of chronic gingival inflammation:?

    • Bleeding on probing.

    • Erythema.

    • Oedema.

    • Loss of stippling.

    Correct Answer
    A. Bleeding on probing.
    Explanation
    The earliest clinic sign of chronic gingival inflammation is bleeding on probing. This occurs when the gums are inflamed and become more sensitive, causing them to bleed when pressure is applied during probing. This is an early indication of gingivitis, which is the first stage of gum disease. Erythema, oedema, and loss of stippling may also be present in gingivitis, but bleeding on probing is the most reliable and consistent sign.

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  • 12. 

    Scaling process removes: ………………………?

    • Calculus and Plaque

    • Calculus

    • Plaque

    • Non, Right answer

    Correct Answer
    A. Calculus and Plaque
    Explanation
    The scaling process removes both calculus and plaque. Calculus is a hardened form of dental plaque that forms on the teeth and can only be removed by professional cleaning. Plaque, on the other hand, is a sticky film of bacteria that forms on the teeth and can be removed through regular brushing and flossing. Therefore, during the scaling process, both calculus and plaque are targeted and removed to improve oral health.

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  • 13. 

    Periodontal pockets can BEST be detected by:?

    • Probing the sulcular area.

    • Radiographic detection

    • The color of the gingival

    • The contour of the gingival margin

    Correct Answer
    A. Probing the sulcular area.
    Explanation
    Periodontal pockets are pockets that form between the gum and the tooth due to gum disease. These pockets can be detected by probing the sulcular area, which involves using a periodontal probe to measure the depth of the pocket. This is the most accurate and direct method of detecting periodontal pockets as it allows the dentist or dental hygienist to assess the health of the gums and determine the presence and severity of gum disease. Radiographic detection can also be helpful in identifying periodontal pockets, but it may not provide as detailed information as probing. The color and contour of the gingival margin may indicate the presence of gum disease but cannot directly detect periodontal pockets.

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  • 14. 

    អាប់សែ Periodontal ធ្ងន់ធ្ងរ ត្រូវបានព្យាបាល ដោយ (Acute periodontal abscess is Treated by):?

    • Drainage through the sulcus or by an external incision + antibiotics.

    • Gingivoplasty

    • Gingivectomy

    • Periodontal flap procedure

    • Antibiotics

    Correct Answer
    A. Drainage through the sulcus or by an external incision + antibiotics.
    Explanation
    An acute periodontal abscess is treated by draining the abscess through the sulcus or by making an external incision to allow the pus to escape. This is done to relieve the pressure and pain caused by the abscess. Antibiotics may also be prescribed to help clear the infection. Gingivoplasty, gingivectomy, and periodontal flap procedures are not typically used to treat acute periodontal abscesses, so they are not the correct answer.

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  • 15. 

    Periodontal pockets can BEST be detected by: ……………?

    • Probing the sulcular area.

    • Radiographic detection

    • The color of the gingival

    • The contour of the gingival margin

    Correct Answer
    A. Probing the sulcular area.
    Explanation
    Periodontal pockets are pockets that form between the gum and the tooth as a result of gum disease. Probing the sulcular area refers to using a dental probe to measure the depth of these pockets. By gently inserting the probe into the space between the gum and tooth, a dentist or dental hygienist can determine the depth of the pocket. This is the most accurate and reliable way to detect periodontal pockets and assess the severity of gum disease. Radiographic detection, the color of the gingival, and the contour of the gingival margin may provide some information about the health of the gums, but they are not as specific or accurate as probing the sulcular area.

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  • 16. 

    The distance between the apical extent of calculus and alveolar crest in human periodontal pockets is: …………………………?

    • 1.97 mm (=33.16%).

    • 0.2 mm.

    • 3 mm.

    • 4 mm.

    • 0.02 mm.

    Correct Answer
    A. 1.97 mm (=33.16%).
    Explanation
    The correct answer is 1.97 mm (=33.16%). This suggests that the distance between the apical extent of calculus and alveolar crest in human periodontal pockets is approximately 1.97 mm, which accounts for about 33.16% of the total distance.

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  • 17. 

    The earliest sign of gingivitis which is of great help for diagnostic and treatment planning is:?

    • Bleeding from gingival sulcus on gentle probing.

    • Pain

    • Increase gingival fluid exudation

    • Spontaneous bleeding

    Correct Answer
    A. Bleeding from gingival sulcus on gentle probing.
    Explanation
    The earliest sign of gingivitis that is helpful for diagnosis and treatment planning is bleeding from the gingival sulcus on gentle probing. This is because gingivitis is characterized by inflammation of the gums, and bleeding upon probing indicates the presence of inflammation and early stages of the disease. Pain, increased gingival fluid exudation, and spontaneous bleeding may also be symptoms of gingivitis, but bleeding upon gentle probing is the earliest and most reliable sign.

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  • 18. 

    The term chronic inflammation is best defined as?

    • An inflammatory process of long duration

    • An rapid onset of inflammation

    • An inflammatory process of short duration

    • A process with no evidence of repair

    • A process which will be self-limiting

    Correct Answer
    A. An inflammatory process of long duration
    Explanation
    Chronic inflammation refers to an inflammatory process that persists for a prolonged period. It is characterized by the continuous activation of the immune system and the release of inflammatory mediators. Unlike acute inflammation, which has a rapid onset and resolves quickly, chronic inflammation can last for weeks, months, or even years. This prolonged inflammation can lead to tissue damage and is associated with various chronic diseases, such as rheumatoid arthritis, asthma, and cardiovascular diseases.

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  • 19. 

    The amount of gingival crevicular fluid is: ………………………………………….?

    • Increased by tooth brushing and gingival massage.

    • Decreased when inflammation is present.

    • Increase by trauma from occlusion

    • Decreased by mastication of coarsee (គ្រោគគ្រាត គគ្រើម) food and smoking.

    • Decreased by ovulation and hormonal contraceptives.

    Correct Answer
    A. Increased by tooth brushing and gingival massage.
    Explanation
    The correct answer is "Increased by tooth brushing and gingival massage." This is because both tooth brushing and gingival massage stimulate the gingival tissues, leading to an increase in the amount of gingival crevicular fluid.

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  • 20. 

    Subclinical gingivitis is: …………………………………..?

    • Characterized by increased crevicular fluid flow and infiltration of sulcular and junction epithelium by polymorphonuclear leukocytes.

    • Characterized by vascular proliferation.

    • Characterized by predominantly lymphocytes microscopically.

    • Characterized by predominantly plasma cell microscopically.

    • Characterized by erythema, bleeding on probe.

    Correct Answer
    A. Characterized by increased crevicular fluid flow and infiltration of sulcular and junction epithelium by polymorphonuclear leukocytes.
    Explanation
    Subclinical gingivitis is characterized by increased crevicular fluid flow and infiltration of sulcular and junction epithelium by polymorphonuclear leukocytes. This means that there is an increased production of fluid in the crevices of the gums and an infiltration of a specific type of white blood cells into the lining of the gums. This condition may not present with obvious signs such as bleeding or redness, but the presence of these cellular changes indicates the presence of gingivitis.

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  • 21. 

    A compound periodontal pocket is?

    • Present on two or more tooth surfaces.

    • Spiral type of pocket.

    • Infrabony in nature.

    • No, right answer.

    Correct Answer
    A. Present on two or more tooth surfaces.
    Explanation
    A compound periodontal pocket refers to a pocket that is present on two or more tooth surfaces. This means that the pocket extends between multiple teeth, rather than being isolated to a single tooth. It is different from a simple periodontal pocket, which is confined to one tooth surface. The presence of a compound periodontal pocket indicates a more advanced stage of periodontal disease, as it suggests that the inflammation and infection have spread to multiple areas in the mouth.

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  • 22. 

    Which of the following are true of chronic periodontitis?

    • It is characterized by loss of alveolar bone and bleeding

    • It is a rare condition

    • Pockets depths are usually less than 4 mm

    • Recession is rare

    • Drifting of teeth is not a common finding

    Correct Answer
    A. It is characterized by loss of alveolar bone and bleeding
    Explanation
    Chronic periodontitis is a common condition characterized by the loss of alveolar bone and bleeding. This condition is not rare and is actually quite prevalent. Pocket depths in chronic periodontitis are typically greater than 4 mm, not less than 4 mm. Recession, which refers to the exposure of the tooth root, is a common finding in chronic periodontitis. Additionally, drifting of teeth is a common occurrence in this condition.

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  • 23. 

    The periodontium consists of all of the following EXCEPT?

    • Pulp of tooth

    • Gingiva

    • Cementum

    • Alveolar bone

    • Periodontal ligament

    Correct Answer
    A. Pulp of tooth
    Explanation
    The correct answer is "Pulp of tooth" because the periodontium refers to the supporting structures around the tooth, including the gingiva, cementum, alveolar bone, and periodontal ligament. The pulp of the tooth, on the other hand, is the soft tissue within the tooth that contains nerves and blood vessels. While important for the vitality of the tooth, it is not considered part of the periodontium.

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  • 24. 

    Dental plaque adheres to the tooth surface by?

    • Dextran (insoluble and sticky).

    • Bacteria,

    • Sucrose,

    • Epithelial cells

    Correct Answer
    A. Dextran (insoluble and sticky).
    Explanation
    Dental plaque adheres to the tooth surface through dextran, which is a type of polysaccharide produced by bacteria in the mouth. Dextran is insoluble and sticky, allowing it to form a biofilm on the tooth surface. This biofilm provides a protective environment for bacteria to thrive and multiply, leading to the formation of dental plaque. The sticky nature of dextran helps to trap other bacteria and substances, such as food particles, leading to the accumulation and growth of plaque over time.

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  • 25. 

    ឧបករណ៏តម្រូវការសម្រាប់ periodontal index:?

    • Light, Mouth mirror and explorer (periodontal probe).

    • Light.

    • Light and Mouth mirror.

    • Light, Mouth mirror and graduated probe.

    Correct Answer
    A. Light, Mouth mirror and explorer (periodontal probe).
    Explanation
    The correct answer is "Light, Mouth mirror and explorer (periodontal probe)." These instruments are necessary for conducting a periodontal index, which is a measurement used to assess the health of the gums and supporting structures of the teeth. The light helps to illuminate the oral cavity, the mouth mirror is used to visualize hard-to-reach areas, and the explorer or periodontal probe is used to measure the depth of periodontal pockets and assess the presence of gum disease.

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  • 26. 

    The usefulness of radiographs may: ……………………….?

    • To know the dilation of widening of periodontal ligament near crest

    • Trauma the pulp of tooth

    • Situation of gingival

    • Non, the answer are correct

    Correct Answer
    A. To know the dilation of widening of periodontal ligament near crest
    Explanation
    Radiographs are useful in determining the dilation and widening of the periodontal ligament near the crest. This information can help diagnose periodontal disease or trauma to the tooth. Radiographs can also provide information about the condition of the gingiva. Therefore, radiographs are valuable in assessing the health and condition of the teeth and surrounding structures.

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  • 27. 

    Which of the following step should be most preferably taken in root planning procedure?

    • Removal of necrosis cementum and calculus.

    • Removal of root caries.

    • Removal of calculus.

    • Removal of dentine.

    • Removal of pulp.

    Correct Answer
    A. Removal of necrosis cementum and calculus.
    Explanation
    In the root planning procedure, the most preferable step would be the removal of necrosis cementum and calculus. This is because necrosis cementum and calculus can accumulate on the root surface, leading to inflammation and infection. By removing them, the dentist can help eliminate the source of infection and promote healing of the affected area. Additionally, removing necrosis cementum and calculus can also help to smooth the root surface, making it less susceptible to future plaque and calculus buildup.

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  • 28. 

    Teeth grinding and gnashing (bruxism) can lead to:?

    • A pain in the neck, Sore teeth, Headaches

    • A pain in the neck

    • Sore teeth

    • Headaches

    Correct Answer
    A. A pain in the neck, Sore teeth, Headaches
    Explanation
    Teeth grinding and gnashing, also known as bruxism, can lead to various symptoms such as a pain in the neck, sore teeth, and headaches. This is because the excessive grinding and clenching of the teeth can strain the muscles in the neck, leading to pain. It can also cause tooth sensitivity and soreness due to the excessive pressure and friction on the teeth. Additionally, the tension and strain from bruxism can result in headaches.

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  • 29. 

    Straightening of the teeth is called:?

    • Orthodontics

    • Pediatrics

    • Geometry

    • Endodontic

    Correct Answer
    A. Orthodontics
    Explanation
    Orthodontics is the correct answer because it is the branch of dentistry that focuses on the correction of misaligned teeth and jaws. It involves the use of braces, retainers, and other dental appliances to straighten teeth and improve their alignment. Pediatrics is the branch of medicine that deals with the medical care of children. Geometry is a branch of mathematics that deals with the properties and relationships of points, lines, angles, and shapes. Endodontics is the branch of dentistry that deals with the diagnosis and treatment of diseases and injuries to the dental pulp.

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  • 30. 

    The periodontium consists of all of the following EXCEPT?

    • Dentine

    • Gingiva

    • Cementum

    • Alveolar bone

    • Periodontal ligament

    Correct Answer
    A. Dentine
    Explanation
    The periodontium is the supporting structure of the teeth and includes the gingiva (gums), cementum, alveolar bone, and periodontal ligament. Dentine, on the other hand, is not part of the periodontium. Dentine is the hard, calcified tissue that forms the majority of the tooth structure beneath the enamel and cementum. While dentine is an important component of the tooth, it is not considered part of the periodontium, which specifically refers to the supporting structures surrounding the tooth.

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  • 31. 

    Local treatment procedure that accelerates regeneration is: ………?

    • All answers

    • Scaling

    • Root planning

    • Curettage

    Correct Answer
    A. All answers
    Explanation
    The correct answer is "All answers". This means that all of the mentioned treatment procedures (scaling, root planning, and curettage) can accelerate regeneration. These procedures are commonly used in dentistry to remove plaque, tartar, and infected tissue from the teeth and gums, promoting healing and regeneration of healthy tissues.

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  • 32. 

    What the usefulness is of radiographs in periodontal?

    • Bone loss in furcation areas and Width of periodontal ligament

    • Situation of gingival

    • Width of periodontal ligament

    • Trauma the pulp of tooth

    Correct Answer
    A. Bone loss in furcation areas and Width of periodontal ligament
    Explanation
    Radiographs are useful in periodontal treatment because they can help identify bone loss in furcation areas and assess the width of the periodontal ligament. Bone loss in furcation areas is an important indicator of periodontal disease progression and can help determine the severity of the condition. The width of the periodontal ligament can also provide valuable information about the health of the tooth and its supporting structures. By evaluating these factors, radiographs can aid in diagnosis, treatment planning, and monitoring the progress of periodontal therapy.

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  • 33. 

    Average human biologic is: …………………………………….?

    • 2 mm.

    • 3 mm.

    • 4 mm.

    • 1 mm.

    • 0.5 mm.

    Correct Answer
    A. 2 mm.
    Explanation
    The average human biologic is 2 mm. This means that the typical size or measurement of a human biological entity is 2 millimeters.

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  • 34. 

    Root planning is: …………………………………………………?

    • Removal of disease cementum along with other root deposits.

    • Removal of material Alba and stains from root surface.

    • Removal of soft tissue wall of the periodontal pocket.

    • Removal of calculus and plaque from root surface.

    • Removal of food debris from tooth surface.

    Correct Answer
    A. Removal of disease cementum along with other root deposits.
    Explanation
    Root planning is the process of removing disease cementum along with other root deposits. This procedure is performed to eliminate any bacteria or toxins that may be present on the root surface, which can contribute to periodontal disease. By thoroughly cleaning the root surface, the goal is to promote healing and prevent further progression of the disease.

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  • 35. 

    ឧបករណ៏តម្រូវការសម្រាប់ periodontal index?

    • Light, Mouth mirror and explorer (periodontal probe).

    • Light.

    • Light and Mouth mirror.

    • Light, Mouth mirror and graduated probe.

    Correct Answer
    A. Light, Mouth mirror and explorer (periodontal probe).
    Explanation
    The correct answer for the periodontal index is "Light, Mouth mirror and explorer (periodontal probe)." These tools are essential for conducting a thorough examination of the gums and teeth. The light helps to illuminate the oral cavity, allowing for better visibility and identification of any abnormalities. The mouth mirror is used to reflect light and provide a clear view of hard-to-reach areas. The explorer or periodontal probe is used to measure the depth of periodontal pockets and assess the overall health of the gums. Together, these tools enable a comprehensive evaluation of the periodontal condition.

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  • 36. 

    Dental floss is use to:?

    • Remove interdental plaque, interdental food and debris.

    • Remove interdental plaque

    • Message gums

    • Prevent gingival recession

    Correct Answer
    A. Remove interdental plaque, interdental food and debris.
    Explanation
    Dental floss is used to remove interdental plaque, interdental food, and debris. It is a thin thread-like material that is inserted between the teeth and moved back and forth to clean the spaces where a toothbrush cannot reach. This helps to prevent the buildup of plaque, which can lead to tooth decay and gum disease. Flossing also helps to remove food particles that may be stuck between the teeth, reducing the risk of bad breath and promoting overall oral hygiene.

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  • 37. 

    A compound periodontal pocket is:?

    • Present on two or more tooth surfaces.

    • Spiral type of pocket.

    • Infrabony in nature.

    • No, right answer.

    Correct Answer
    A. Present on two or more tooth surfaces.
    Explanation
    A compound periodontal pocket refers to a pocket that is present on two or more tooth surfaces. This means that the pocket extends between two or more teeth, affecting multiple areas of the gums and potentially leading to more severe periodontal disease. It is important to identify and treat compound periodontal pockets to prevent further damage to the teeth and gums.

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  • 38. 

    Excisional new attachment procedure involves: …………………………?

    • Internal bevel incision from the margin of the gingival apically to point below bottom of pocket.

    • A periodontal flap.

    • A free gingival graft

    • A regenerative osseous procedure.

    • Root planning.

    Correct Answer
    A. Internal bevel incision from the margin of the gingival apically to point below bottom of pocket.
    Explanation
    The correct answer for this question is "Internal bevel incision from the margin of the gingival apically to point below bottom of pocket." This procedure involves making an incision from the edge of the gum tissue towards the bottom of the pocket, allowing for access to the affected area. This technique is commonly used in excisional new attachment procedures to remove diseased tissue and promote the healing of the gum tissue.

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  • 39. 

    The clinical presentation of gingivitis and periodontitis are similar. How could you determine if a patient has periodontitis is?

    • Look for bone loss on a radiograph

    • The gingiva would bleed on probing

    • The gingiva would appear swollen

    • The patient would report pain

    • The oral hygiene would be poor

    Correct Answer
    A. Look for bone loss on a radiograph
    Explanation
    To determine if a patient has periodontitis, one could look for bone loss on a radiograph. This is because periodontitis is characterized by the destruction of the supporting structures of the teeth, including the bone. By examining a radiograph, a dentist or periodontist can assess the level of bone loss around the teeth, which is a key indicator of periodontitis. The other options, such as bleeding on probing, swollen gingiva, pain, and poor oral hygiene, may be present in both gingivitis and periodontitis, but only the presence of bone loss on a radiograph specifically confirms the diagnosis of periodontitis.

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  • 40. 

    Average human biologic is:?

    • 2 mm.

    • 3 mm.

    • 4 mm.

    • 1 mm.

    • 0.5 mm.

    Correct Answer
    A. 2 mm.
    Explanation
    The average human biologic is 2 mm. This suggests that the average measurement for a human biologic, which could refer to a biological sample or organism, is 2 mm in size.

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  • 41. 

    The amount of gingival crevicular fluid is:?

    • Increased by tooth brushing and gingival massage.

    • Decreased when inflammation is present.

    • Increase by trauma from occlusion

    • Decreased by mastication of coarsee (គ្រោគគ្រាត គគ្រើម) food and smoking.

    • Decreased by ovulation and hormonal contraceptives.

    Correct Answer
    A. Increased by tooth brushing and gingival massage.
    Explanation
    The amount of gingival crevicular fluid is increased by tooth brushing and gingival massage. These activities stimulate blood flow to the gums, leading to an increase in fluid production.

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  • 42. 

    The most common factor that defect healing after periodontal treatment: …?

    • Plaque

    • Excessive manipulation

    • Inadequate blood supply

    • Foreign bodies

    Correct Answer
    A. Plaque
    Explanation
    Plaque is the correct answer because it is the primary cause of periodontal disease. After periodontal treatment, if plaque is not properly controlled, it can lead to the recurrence of infection and inflammation, preventing proper healing. Plaque contains harmful bacteria that can damage the gums and supporting structures of the teeth, causing defects in the healing process. Therefore, maintaining good oral hygiene and removing plaque through regular brushing and flossing is essential for successful healing after periodontal treatment.

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  • 43. 

    Primary endodontic lesion requires:?

    • Endodontic treatment only.

    • Minor periodontal treatment only.

    • Periodontal surgical treatment only.

    • A combined Periodontal and endodontic treatment.

    • A periodontal flap procedure.

    Correct Answer
    A. Endodontic treatment only.
    Explanation
    A primary endodontic lesion refers to a dental problem that originates within the tooth's pulp and requires treatment specifically focused on the root canal system. This can include procedures such as root canal therapy to remove infected or damaged pulp, followed by cleaning, shaping, and filling the canals to prevent further infection. It does not involve any periodontal issues or require periodontal surgical treatment. Therefore, the correct answer is endodontic treatment only.

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  • 44. 

    Excisional new attachment procedure involves:?

    • Internal bevel incision from the margin of the gingival apically to point below bottom of pocket.

    • A periodontal flap.

    • A free gingival graft

    • A regenerative osseous procedure.

    • Root planning.

    Correct Answer
    A. Internal bevel incision from the margin of the gingival apically to point below bottom of pocket.
    Explanation
    The correct answer is internal bevel incision from the margin of the gingival apically to point below the bottom of the pocket. This procedure involves making an incision inside the gum line, starting from the margin of the gingiva and extending apically (towards the root of the tooth) to a point below the bottom of the pocket. This technique allows for better access to the affected area and facilitates the removal of diseased tissue.

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  • 45. 

    The most common factor that defects healing after periodontal treatment: ?

    • Plaque

    • Excessive manipulation of tissue

    • Inadequate blood supply

    • Foreign bodies

    Correct Answer
    A. Plaque
    Explanation
    Plaque is the correct answer because it is a sticky film of bacteria that forms on the teeth and gumline. If plaque is not properly removed through regular brushing and flossing, it can lead to gum disease and hinder the healing process after periodontal treatment. Plaque can cause inflammation and infection in the gums, preventing them from properly healing. Therefore, it is important to maintain good oral hygiene practices to prevent plaque buildup and promote successful healing after periodontal treatment.

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  • 46. 

    A 27 year-old male presents to your dental clinic with the following signs: loss of interdental and marginal tippling, blue-red tissue color, the junction epithelium at the CEJ, and bleeding upon gentle probing. Your diagnosis is:?

    • Chronic gingivitis.

    • Gingival recession

    • Systemic infection

    • Advanced periodontal disease, (periodontitis)

    • Melanin pigmentation

    Correct Answer
    A. Chronic gingivitis.
    Explanation
    The signs described, such as loss of interdental and marginal tippling, blue-red tissue color, junction epithelium at the CEJ, and bleeding upon gentle probing, are all indicative of chronic gingivitis. Chronic gingivitis is characterized by inflammation of the gum tissue caused by plaque buildup and poor oral hygiene. This condition can lead to gum recession and eventually progress into advanced periodontal disease if left untreated. Melanin pigmentation and systemic infection are not consistent with the signs presented in the case.

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  • 47. 

    Subclinical gingivitis is:?

    • Characterized by increased crevicular fluid flow and infiltration of sulcular and junction epithelium by polymorphonuclear leukocytes.

    • Characterized by vascular proliferation.

    • Characterized by predominantly lymphocytes microscopically.

    • Characterized by predominantly plasma cell microscopically.

    • Characterized by erythema, bleeding on probe.

    Correct Answer
    A. Characterized by increased crevicular fluid flow and infiltration of sulcular and junction epithelium by polymorphonuclear leukocytes.
    Explanation
    Subclinical gingivitis is characterized by increased crevicular fluid flow and infiltration of sulcular and junction epithelium by polymorphonuclear leukocytes. This means that even though there may not be visible signs of inflammation or bleeding, there is still an increase in fluid flow and the presence of specific types of white blood cells in the gums. This suggests that there is an underlying inflammatory process occurring, even if it is not clinically evident.

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  • 48. 

    Risk factors of periodontal disease are:?

    • Smoking, Diabetes, Poor Oral Hygiene, Osteoporosis, HIV/AIDS, Medications and Stress.

    • Smoking, Diabetes, Poor oral hygiene

    • Smoking ,Diabetes, Poor Oral Hygiene, Osteoporosis

    • Smoking ,Diabetes, Poor Oral Hygiene, Osteoporosis, HIV/AIDS

    • Smoking ,Diabetes, Poor Oral Hygiene, Osteoporosis, HIV/AIDS, Medication

    Correct Answer
    A. Smoking, Diabetes, Poor Oral Hygiene, Osteoporosis, HIV/AIDS, Medications and Stress.
    Explanation
    The correct answer includes all the risk factors of periodontal disease mentioned in the question. Smoking, diabetes, poor oral hygiene, osteoporosis, HIV/AIDS, medications, and stress are all known risk factors for the development and progression of periodontal disease.

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  • 49. 

    Definition of scaling: ………………………………..?

    • Process by which plaque and calculus are removed from both supra and subgingival tooth surface.

    • Process by which residual embedded calculus and portion of cementum are removed from the root to produce a smooth, hard and clean surface

    • Elimination of dental caries

    • Elimination of dental caries and filling cavity

    Correct Answer
    A. Process by which plaque and calculus are removed from both supra and subgingival tooth surface.
    Explanation
    Scaling is the process of removing plaque and calculus from both the supra and subgingival tooth surfaces. This procedure is important for maintaining oral health as plaque and calculus can lead to gum disease and tooth decay. By removing these deposits, a clean and healthy tooth surface is achieved, reducing the risk of dental problems.

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Quiz Review Timeline (Updated): Mar 26, 2024 +

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

  • Current Version
  • Mar 26, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 05, 2019
    Quiz Created by
    Uhsdental
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