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KROK 2 Dentistry 2021 Questions | KROKEXAM
Browse 2021 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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A 39-year-old woman provisionally diagnosed with generalized periodontitis, I degree, chronic progression. X-ray shows uneven resorption of interdental septa by 1/3–1/4 of root length. What surgical method must be used in this case as a part of complex treatment?
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During obtaining a full anatomical impression of the upper jaw with alginate mass, a 56-year-old man developed acute dyspnea, pale skin, increased sweating, cyanosis, and wheezing respirations. What urgent condition developed in this case?
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A 35-year-old woman came to the dental office complaining of teeth mobility. Objectively, her teeth 42, 41, 31, 32 have the II degree mobility and teeth 43, 33. have the I degree mobility. The tooth crowns are intact. The woman presents with a deep bite. X-ray shows resorption of the interdental septa by 1/3 of the root height. What splint construction is advisable in this case for temporary use?
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A practically healthy 7-year-old child complains of a broken crown of the upper right front tooth and pain in this tooth. Objectively, 1/3 of the crown of tooth 11 is missing, the pulp is exposed in one spot, acutely painful, red, and bleeds when probed. Percussion of the tooth is slightly painful. The trauma was 2 hours ago. What is the optimal treatment method in this case?
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The anatomo-physiological method was applied to determine the interalveolar height of a 65-year-old man with completely edentulous jaws. How does the distance between the control points on the chin and at the nasal base differ in this case from the physiological resting state of the lower jaw?
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A maxillofacial surgery department has received a 34-year-old man with a frostbite on his face. Examination shows that the skin in the affected area is edematous, hyperemic, and cyanotic. No tissue necrosis. What degree of the frostbite is it?
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After a tooth extraction, the patient developed a hemorrhage from the socket of the extracted tooth. What tactics should the dentist choose in this case?
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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 is preferable in this case?
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What manipulation of those listed below is not a part of typical procedure of tooth extraction with forceps?
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A child born with cleft palate needs an obturator. What is the optimal age for installing a palatal obturator in this case?
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A dentist treats chronic gangrenous pulpitis of tooth 47 in a 28-year-old man. What results of electric pulp testing confirmed the diagnosis of chronic gangrenous pulpitis?
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A man with distal bite underwent Eschler-Bittner test for the purpose of differential diagnostics. The shape and profile of his face have notably improved. What type of distal bite is it, according to test results?
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What prosthodontic appliance has the mechanical type of action?
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A 9-year-old boy complains of a spontaneous pulsing and irradiating pain in his lower right teeth that slightly abates when cold is applied. Objectively, tooth 46 has a deep carious cavity with soft floor, located within the parapulpar dentin. Probing of the cavity floor is acutely painful. Percussion of the tooth is painful. The boy was diagnosed with acute purulent pulpitis of tooth 46. What treatment method should be chosen in this case?
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A 32-year-old man has been brought into the maxillofacial department of a clinic. He was diagnosed with an open displaced bilateral fracture of the lower jaw in the area of the gonial angle. X-ray shows a large diastasis between the fragments and muscle interposition. What main treatment technique should be chosen for this patient?
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A patient is undergoing treatment for chronic granulating periodontitis of tooth 26. The root canals were irrigated with an antiseptic that can penetrate into the structures of biofilms, destroy them, and dissolve organic tissues. What antiseptic was used by the doctor?
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A 26-year-old man came to a dentist complaining of facial asymmetry that developed because of a painful swelling in the left parotid area that appeared 3 days ago. His body temperature is 37.2°C. Two weeks ago he had a case of acute respiratory disease. Objectively, in the left parotid area there is a dense round infiltration up to 2 cm in size that is slightly mobile and moderately painful. The excretory duct of the parotid gland produces clear transparent saliva. Make the provisional diagnosis:
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A child is 5 years old. There are complaints of an aesthetical defect. An extraoral examination shows that the face is symmetrical, but disproportionate because of reduced lower third of the face. In the oral cavity, teeth 55, 54, 64, and 65 are missing. What dental device is necessary for this patient?
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A 48-year-old man complains of a dull pain in the area of his tooth 48 that intensifies when biting, worsening of his general condition, and high body temperature of 38°C. Objectively, the retromolar mucosa is edematous and hyperemic. The distal surface of tooth 48 is covered with a mucosal flap, palpation of which provokes a sharp pain and discharge of purulent exudate. What is the most likely diagnosis in this case?
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Removable partial dentures for both jaws are being made for a 60-year-old man. The patient has a history of chronic angular stomatitis. When making his dentures, special attention should be paid to the:
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A man complains of muscle weakness, constipations, dry mouth, inability to swallow food, and vision impairment. The day before, he was eating homemade canned fish. Objectively, his skin and visible mucosa are pale; he has diplopia and bilateral ptosis. What disease can be suspected in this case?
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A 45-year-old man complains of a pain in his upper jaw. Two days ago he had a trauma. Objectively, he has a disturbed occlusion. On palpation, the maxillary alveolar process is mobile. Make the provisional diagnosis:
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When receiving tuberal anesthesia intraorally, a man developed a rapidly progressing edema of the left cheek that soon spread to the temporal region. What complication has likely occurred in this casc?
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In the dentist's office, after a treatment of tooth 26 a 46-year-old woman suddenly developed a pulsing headache, dizziness, ringing in her ears, tachycardia, and blood pressure of 220/160 mm Hg. Make the provisional diagnosis:
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A was 43-year-old woman provisionally diagnosed with generalized periodontitis. What examination will be the most informative for the assessment of the severity of her condition?
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A 37-year-old woman came to a dentist to have her tooth 25 extracted. What type of anesthesia should be used in this case?
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A 35-year-old man has developed edema and hyperemia that first appeared in the area of his wings of the nose and eventually spread to the upper lip and checks. Examination detected a fissure in the area of the lower external edge of the left nostril. The skin there is taut, dense, purple-blue, with smoothed out pattern. The local temperature is elevated. Palpation is painful. The affected area has clear irregularly-shaped margins. Make the provisional diagnosis:
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A 54-year-old woman complains of a neoplasm on her lower lip that appeared 6 month ago. Twenty days ago, it suddenly started growing rapidly. Objectively, on the vermillion border of the lower lip there is a round red-gray node that rises 0.5 cm above the underlaying tissues. It is distinguished from the surrounding tissues and has a funnelform depression in its center, filled with keratinized masses. On palpation, the nodule is dense, mobile, and painless. What is the most likely diagnosis?
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A 7-year-old boy is diagnosed with epidemic parotitis (mumps). Name the most likely complication of this disease:
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A 62-year-old man came to a dentist to have his tooth 44 extracted. During examination he suddenly fell unconscious. His breathing and pulse are slow, his head is bowed, his arms are flexed in the elbows and wrists, his legs are stretched out, and his jaws are clenched tight. The patient developed clonic convulsion and started foaming at the mouth. His pupils are dilated and unresponsive to light. 1.5 minutes later, the patient's muscles relaxed. The patient is mentally confused. What is the most likely diagnosis in this case?
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A 47-year-old man complains of frequent recurrent jaw dislocations. Objectively, the teeth are retained and the molars are covered with artificial crowns. What treatment tactics should be chosen in this case?
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A 34-year-old woman complains of a pain in her lower left jaw. Two months ago, her teeth 35, 36, and 37 were extracted. Objectively, her lower left jaw has a cuff like thickening. X-ray shows a sequestrum. What is the most likely diagnosis in this case?
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A patient complains of a slowly growing neoplasm in the left frontal region of his head. The neoplasm is mobile, painless, and fused with the skin. Punctate skin depressions can be observed on its surface. Make the provisional diagnosis:
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Epidemiological examination of certain age groups to study the prevalence of the signs that indicate periodontal diseases and to assess the need for treatment uses the following index:
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A 22-year-old man came to a dentist with complaints of increased salivation and a sharp pain in the oral cavity during eating and talking. He notes the acute onset of the disease that occurred after an overexposure to cold, high body temperature (39.5°C), general weakness, and headache. He has a history of chronic tonsillitis and is allergic to certain medicines. On examination his skin is pale. On the dorsal surface of his hands there is a bluish-pink rash with a hemorrhagic scab in the center. The vermilion border of the lips is edematous and has hemorrhagic scabs. The regional lymph nodes are enlarged, painful, and mobile. Make the provisional diagnosis:
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A 48-year-old woman complains of problems with chewing, caused by missing teeth. Objectively, her teeth 31, 32, 33, and 41, 42, 43 have tall crowns and the I degree of mobility. The decision was reached to make a clasp denture splint for her. What type of clasps (clammers) will ensure the splinting function of this construction?
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A 14-year-old girl came to a dentist with complaints of enlarged interdental papillae in the frontal regions of her upper and lower jaw. Examination shows that the interdental papillae are hyperemic, edematous, cover the crowns to 1/2 of their height, and bleed when touched. What system in this case has a pathology that plays the main role in the etiology of this disease?
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A 2-year-old child received a dental trauma. Objectively, the crowns of teeth 51 and 61 are shorter than the crowns of the adjacent teeth by 1/3. The mucosa in the area of teeth 51 and 61 is hyperemic and edematous. X-ray shows no periodontal fissure in the apical area of the roots of teeth 51 and 61. What treatment tactics would be optimal in this case?
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An 11-year-old child undergoes orthodontic treatment. The child is prescribed a dental appliance with combined action (functional direction and mechanical action). What structural elements are likely to be present in this dental appliance?
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A 52-year-old man complains of unpleasant sensations during swallowing and erosions on the oral mucosa. The disease onset was over a month ago. Objectively, on the normal mucosa of the soft palate, cheeks, and gums there are bright red erosions with the remains of erupted vesicles. The mucosa easily sloughs off. The Nikolsky's sign is positive. What medicines must be prescribed for the treatment first?
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