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KROK 2 Dentistry 2023 Questions | KROKEXAM
Browse 2023 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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A 54-year-old woman complains of a neoplasm on her lower lip that appeared 6 months ago. During the last 20 days, it started sharply increasing in size. Objectively, on the vermilion border of the lower lip there is a round gray-red node that protrudes by 0.5 cm above the underlying tissues, is demarcated, and has a funnel-shaped indent in its center, filled with keratinized masses. The node is dense, mobile, and painless to palpation. What is the most likely diagnosis in this case?
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A 38-year-old man has been diagnosed with chronic generalized parodontitis, initial stage. Professional oral hygiene was performed. What oral care product should be recommended to this patient for removal of food debris and massage of the gums?
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A 13-year-old girl complains of a sharp pain when biting on her tooth 21. The pain. developed after an injury. Objectively, the crown of tooth 21 has two fracture lines, the fragments are slightly displaced, blood is oozing from the pulp chamber, percussion is painful. X-ray shows a diagonal fracture of the crown and root of tooth 21. The depth of the subgingival edge of the fracture line is over 4 mm. What should be the dentist's tactics regarding tooth 21?
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A 27-year-old woman needs a denture. Objectively, her tooth 15 is missing, while teeth 14 and 16 are intact. What denture would be optimal in this case?
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A 2-year-old girl developed a fever of 38°C that lasts for three days already. She is fussy and refuses to eat. Examination detects numerous small erosions covered in a fibrinous plaque on the brightly. hyperemic mucosa of the lips, cheeks and soft palate. Submandibular lymph nodes are painful and slightly enlarged. The child has been diagnosed with acute catarrhal gingivitis. What medicine should be prescribed for etiotropic treatment in this case?
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A man with hemophilia came to a dentist with complaints of pain in his lower left tooth. A root fracture was diagnosed in tooth 36. Tooth extraction is planned. What will be the dentist's tactics in this case?
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A 67-year-old patient complains of being unable to use complete removable laminar dentures for the upper and lower jaw. The dentures were made 2 months ago. Objectively, the patient presents with smoothed-out nasolabial folds and mental crease, teeth chattering can be heard during a conversation test, there is no gap between the teeth in the state of physiological rest. At what stage of denture-making did a mistake occur?
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An 8-year-old child has a neutral ratio of first permanent molars, a vertical gap 4 mm wide between the front teeth, and a bad habit of sucking the tongue. What orthodontic appliance should be used for correction of this condition?
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A 9-year-old girl complains of a sharp throbbing pain in her lower tooth. The pain intensifies during biting on this tooth. She was diagnosed with acute purulent. periodontitis of tooth 75. What treatment tactics would be optimal in this case?
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A 32-year-old woman complains of periodic dislocations of her lower jaw. Objectively, she has a direct occlusion, the continuity of her dentition is intact. When she opens her mouth, a clicking can be felt in the temporomandibular joint. What appliance should be used in this case to prevent a habitual dislocation?
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A 34-year-old woman came to a dentist with complaints of short-term pain caused by thermal stimuli in her teeth 34 and 35. Objectively, the visible surfaces of teeth 34 and 35 are intact, the contact surfaces cannot be examined due to the dense arrangement of the teeth. What examination technique would be most informative in this case, if a carious cavity is suspected on the contact surfaces of the teeth?
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A 30-year-old woman complains of a painless swelling in the area of her right lower jaw. The swelling appeared 6 months ago and is slowly increasing in size. Objectively, on the body of the lower jaw on the right in the area of teeth 45 and 46. there is a dense neoplasm 2.5x1.5 cm in size, painless to palpation. The skin and mucosa over the neoplasm are mobile and without discoloration. The oral cavity is sanated. The teeth on the lower jaw are intact. The sensitivity of the lower lip is unchanged. Regional lymph nodes are not palpable. X-ray detects a polycystic formation with clear boundaries in the area of the body of the mandible on the right. Make the provisional diagnosis.
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A 32-year-old man came to a dentist with complaints of skin redness and a swelling in the area of his left cheek. Two months ago, he noticed a dense spot on his left cheek that increased in size over time. The skin over the spot has become bluish red and a softening has formed in its center. Objectively, a pathological focus 2.3x1.4 cm in size with clear borders is observed on the skin of the left cheek. The skin there is sharply thinned-out, bluish, shiny, and forms folds and irregularities. Intraorally a palpable cord is detected that leads from tooth 46 to the lesion on the check. Tooth 46 is filled. Make the provisional diagnosis.
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A 38-year-old woman came to a dentist to have a denture made for her. It is planned to make a porcelain-fused-to-metal crown for her tooth 24. To what thickness should its occlusal surface be filed down?
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A 12-year-old girl complains of periodic bleeding in the area of her lower right tooth. Objectively, the masticatory surface. of tooth 46 has a carious cavity filled with a soft red tissue. Superficial probing is mildly painful, while deeper probing causes pain and bleeding. The tooth is almost unresponsive to thermal stimuli, Percussion. of tooth 46 is painless. X-ray detects no pathological changes in the periodontal region of the tooth. What diagnosis can be made in this case?
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A 50-year-old man came to a dentist to have dentures made for him. During preparation of teeth, the patient complained of a headache and dizziness, he became irritable and anxious and suddenly fainted. Objectively, the pupils were dilated and unresponsive to light, tonic convulsions appeared and became clonic, salivation increased. In a few minutes, the convulsions stopped. The patient experiences mental confusion. What emergency condition most likely occurred in this case?
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A 44-year-old man has been diagnosed with generalized parodontitis, II-degree, chronic progression. What must be done first during the management of this patient?
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A 9-year-old child complains of painful rashes that appeared on the lips. Objectively, the vermilion border of the lips is edematous, hyperemic, and covered in cracks and numerous bloody scabs. On the skin around the lips, there are small blisters with a serous content. In some areas, the blisters merge together. Maceration and weeping of the skin are observed, especially in the corners of the mouth. What is the most likely diagnosis in this case?
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During preventive examination by a dentist, a 27-year-old woman presents. with a painless rash on the mucosa of her cheeks, hard palate, and lower lip. The rash manifests as isolated round copper-red papules 1-1.5 cm in diameter, with a narrow border of hyperemia. Erosions or whitish coating can be observed on the surface: of individual papules. Submandibular and cervical lymph nodes are moderately enlarged, painless, mobile. Make the provisional diagnosis.
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For 2 days a man has been suffering from spontaneous nocturnal pain attacks in the area of his tooth 25. The pain radiates along the branches of the trigeminal nerve and alternates with brief painless intervals. Objectively, the mesial surface of tooth 25 has a deep carious cavity within the parapulpar dentin. Probing of the cavity floor and percussion are painful. Thermal stimulation of tooth 25 provokes a pain attack. What diagnosis can be made in this case?
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During a visit to the dentist, a patient complained of feeling unwell. Objectively. the patient presents with sharp pallor of the skin, cold sweat, sunken peripheral veins, mental confusion. The pulse is 130 / min. thready, arrhythmic, of poor volume. The blood pressure is 80/40 mm Hg. The respiration is rapid and shallow. Make the diagnosis.
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A 28-year-old woman came to a dentist with complaints of acute paroxysmal spontaneous pain in her upper left tooth. The pain attacks last 5-10 minutes. Objective examination detects a carious cavity in tooth 26. The carious cavity has a narrow entrance, is located within the softened non-pigmented peripulpal dentin, and does not communicate with the pulp. chamber. Probing of the cavity floor is painful in the projection of the mesiobuccal pulp horn. The response to cold is painful and prolonged. Percussion is painless. Electric pulp testing i-15 microamperes. What diagnosis can be made in this case?
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A 43-year-old man developed a sharp headache, dizziness, nausea, and visual snow during tooth extraction. The patient is excited, feels heat and trembling in the whole body. Red spots appeared on the skin of his neck and face. He presents with tachycardia and blood pressure of 190/110 mm Hg. What emergency condition has developed in the patient?
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A woman came to a dentist with complaints of periodic pain in the area of her tooth 48. Extraction of tooth 48 is indicated. What forceps must be used for the tooth extraction in this case?
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A 55-year-old woman came to a dentist with complaints of burning in her oral cavity when eating irritant foods, a sensation of roughness, and an unusual appearance of the buccal mucosa. The patient has a history of chronic cholecystitis. Objectively, she has artificial crowns made of various metals in her oral cavity Against the background of unchanged buccal mucosa, she has patches of small whitish papules in the retromolar space. They are keratinized, slightly raised, form a ring-shaped pattern, and cannot be removed by scraping. Make the provisional diagnosis.
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During preparation of the teeth for installment of an orthopedic appliance, a 65-year-old woman complained of a sharp headache, a sensation of heat, nausea, numbness of the limbs, and impaired vision. Objectively, asymmetric due to the smoothed-out nasolabial fold on one side, she has difficulty speaking. Her blood pressure is 150/90 mm Hg. Make the provisional diagnosis.
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A 35-year-old man complains of constant pain in the area of his upper left lateral tooth. The pain is observed throughout the last 24 hours and intensifies during biting on the affected tooth. Objectively, a carious cavity is observed on the mesial surface of tooth 25. The carious cavity does not communicate with the pulp chamber. Thermal stimulus provokes no response. Percussion of tooth 25 is sharply painful. X-ray detects no pathological changes in the bone tissue of the periapical region. What diagnosis can be made in this case?
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When receiving tuberal anesthesia intraorally, a patient developed a rapidly progressing edema of the left cheek that soon spread to the temporal region. What complication has likely occurred in this clinical case?
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The vestibular surfaces of the upper incisors of a 25-year-old man are affected by fluorosis that manifests as spots with marble-like appearance. What aesthetic design should be proposed for this patient?
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In a 16-year-old girl, a dentist detected patches of white enamel that has lost its natural luster in the paracervical regions of her teeth 11 and 21. The enamel surface is smooth and dense to probing. Thermal stimulation results are negative. The lesions can be stained with a 2%. aqueous solution of methylene blue. In this case, the infiltration technique was chosen for the treatment of initial caries. What material is used in this technique?
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