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KROK 2 Dentistry 2019 Questions | KROKEXAM
Browse 2019 KROK 2 Dentistry exam questions with answers and explanations.
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A 56-year-old patient suffering from exacerbation of schizophrenia has been hospitalized in an oral in-patient department with a diagnosis of the lower jaw displaced fracture in the area of the 34-35 teeth. What method of treatment should be prescribed?
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A 57-year-old man complains of pain and creaking in his right temporomandibular joint when eating. In the evening the signs diminish. The pain is observed for the last 2-3 years. Objectively the face is symmetrical, mouth opening is reduced to 2.5 cm. Molars are missing on both jaws. X-ray shows deformed articular surfaces of the right temporomandibular joint. What is the most likely diagnosis?
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A 30-year-old woman complains of mild burning sensation in her lower lip and its dryness. She peels skin scales off with her teeth. She has been presenting with this condition for 10 years. On examination the skin scales are gray and located on the lip from the Klein’s line to the center of the vermillion border from angle to angle of the mouth. The scales are firmly attached in the center and are loose on the periphery. Their forcible removal does not result in erosions. What is the most likely diagnosis?
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A 25-year-old woman made an appointment with the dental surgeon for oral cavity sanation. Objectively the crown of tooth 37 is destroyed by 2/3. Gingival mucosa around tooth 37 is without changes. What anesthesia should the dental surgeon give to the patient for the procedure of tooth extraction?
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The dental surgery department received a women with complaints of swollen right side of the face and indisposition. According to her medical history, one week ago she sensed itching in the right side of her face and noticed there a small dense nodule. She started to apply various ointments. Swelling was gradually increasing, the woman developed pain and fever. Objectively her condition is of moderate severity, body temperature is 39°C. Her right buccal region is swollen, with hyperemic skin; in the center there is an oval edema elevated above the surrounding tissues with a black scab visible on its apex. Palpation detects a painful infiltration, 3.5 cm in diameter, and enlarged and painful submandibular lymph nodes. Mouth opening is slightly impaired, oral cavity is clean. Make the diagnosis:
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What shape does the upper dental arch have in the permanent dentition?
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During examination the child presents with retracted mucosa on the soft palate and uvula. The child was diagnosed with congenital submucous cleft soft palate. What surgical operation is necessary in this case?
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A patient was diagnosed with cancer of the right parotid gland, T2N2M0. What treatment method should be chosen in this case?
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A 50-year-old man was diagnosed with recurrent sialolithiasis with the sialolith located deep within the submandibular salivary gland. Choose the optimal treatment tactics:
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During administration of ultracain solution for infiltration anesthesia the condition of a 22-year-old patient sharply deteriorated. The patient became inert, silent, developed cough attacks, expiratory dyspnea, wheezing. Viscous slimy sputum is being expectorated. What urgent condition did the patient develop?
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A 45-year-old man presents with facial asymmetry due to a dense isolated infiltration in his right buccal area; the skin over the infiltration is cyanotic, thinned out; in the center of the infiltration there is a fistula, fn the oral cavity the crown of 46 is destroyed by 2/3, along the mucogingival fold the band connecting the tooth with the fistula can be palpated. Make the diagnosis:
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A 7-year-old boy was brought to the dentist. Objectively his gums are hyperemic and bleeding, the teeth are mobile and covered in plaque, their roots are exposed, periodontal pockets are pathologic and filled with granulations. The child is registered for regular check-ups with the pediatrician. According to the mother, lately the child’s condition has been deteriorating. The boy presents with diabetes insipidus and exophthalmos. What provisional diagnosis can be made?
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A 12.5-year-old child came to the dentist for oral cavity sanitation. Objectively caries progression in this child is severe: decay- missing- filled index is DMF=2+0+4=6. Green-Vermillion index is 1.7. Gingival mucosa is pale pink. What toothpastes should be prescribed in this case for oral hygiene?
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A 65-year-old man with fully edentulous upper jaw needs removable full laminar denture. To make the denture, anatomical impressions of the upper and lower jaws are necessary. The patient exhibits heightened gag reflex. What drug can be used to suppress the gag reflex in this patient?
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A 50-year-old man complains of gum discoloration, pain when eating spicy food, weakness, and irritability. He notes that periodically spots and vesicles appear on his skin. For a long time he has been working in the galvanic workshop of a factory. On examination the patient is pale, he has a gray-black border on his gums, and on his oral mucosa there are single erosions that are painful on palpation. What is the most likely provisional diagnosis?
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A 28-year-old patient complains of aesthetical defect. Objectively the crowns of 12, 11, 21, 22, and 23 are destroyed by caries by over 2/3 of their heights. The patient has orthognathic occlusion. X- ray shows the root canals of these teeth to be completely filled; no pathologic changes detected in the periapical tissues. What approach to teeth restoration would be optimal in this case?
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A 44-year-old man came to the dental polyclinic to have a denture made for him. He complains of problematic chewing and aesthetical defects. Objectively teeth 14, 15, and 22 are missing. According to Agapov, the loss of masticatory efficiency in this case is:
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A patient needs a removable full laminar denture for the upper jaw. Objectively on the mucosa of the denture bed there are numerous dense papillomas of varying size. What tactics should the dentist choose?
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Biopsy material was obtained from the focus of a lesion in the retromolar space. Pathohistological findings: cellular polymorphism in the stratum spinosum, increased mitotic number, giant multinucleate cells, acanthosis, some cells in the stratum spinosum exhibit signs of parakeratosis, keratin pearls are detected. These pathohistological findings indicate the following disease:
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A 29-year-old man is diagnosed with medial maxillary fracture. The line of the fracture is symmetrical on both sides. In this case sensory perception in the teeth and mucosa is likely to be disturbed within the following interval:
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A 45-year-old patient complains of bleeding gums and bad breath. After examination the patient was provisionally diagnosed with chronic generalized periodontitis of the II-degree. To make the final diagnosis, it is necessary to:
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A 10-year-old girl complains of an aesthetic flaw. The anamnesis states, that she had been sucking her right thumb up to the age of 7. Objectively: the face lower third is somewhat reduced. Tire sagittal fissure between the upper and lower incisors, is 9 mm wide, class 2 according to the Angle classification. Eshler-Bittner test leads to initial temporary improvement of the girl’s face, followed by renewed deterioration. What clinical malocclusion is the most likely in this case?
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A 37-year-old patient complains of an aesthetic defect. Objectively: the 13 tooth is destroyed by 2/3. The tooth is pulpless, the root canal is filled. How deep should the root canal be opened for pivot crown in this patient?
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A 38-year-old man after a domestic accident complains of pain and mobility of his upper teeth, problems with eating. Objectively: soft tissues edema. The 11 and 21 teeth are displaced towards the palate, mobile (II-degree), painful on percussion. Mucosa surrounding the affected teeth is hyperemic and swollen. X-ray demonstrates widened periodontal fissure of the 11 and 21. Choose the treatment method:
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A 39-year-old woman complains of teeth mobility in her lower jaw. Objectively her dental formula is as follows: 17 16 15 14 13 12 11 / 21 22 23 24 25 26 27, 47 46 45 44 43 42 41/31 32 33 34 35 36 37. The teeth are intact, crowns are tall. Gingival pockets and mobility of the I and II-degrees are observed in teeth 42 41/31 32. To immobilize the mobile teeth, a cap splint with fixed crowns was made for 43/33. What type of stabilization provides this splint?
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One of the stages of making a removable full denture includes fitting of an impression tray and obtaining the functional impression. What material is applied to the edges of the impression tray?
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A 28-year-old woman came to the dentist for oral cavity sanation. She was diagnosed with acute deep caries of tooth 24. She has a history of seasonal allergic rhinitis and drug allergy that manifests as a skin rash and Quincke edema. She does not remember whether she has been given local anesthesia at the dentist’s office previously. What tactics should the dentist choose regarding the anesthesia in this case?
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A 47-year-old man has lost his lower left premolars. After that the teeth at the edges of the defect have been gradually sliding inside the defect. At the same time the antagonist teeth started to protrude toward the edentulous segment of the alveolar bone. In the medical literature, such clinical presentation is called:
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During preventive examination a 40-year-old man presents with the following changes: marginal gingiva is enlarged, torus-shaped, cyanotic, slightly bleeding when touched with a dental probe; there is no pain. Staining the gums with Lugol’s iodine solution results in light-brown coloring of mucosa. Make the diagnosis:
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A 48-year-old man complains of a lumor-like formation on the hard palate. Examination detected a semi-spherical protrusion with clear margins in the anterior portion of the palate. Teeth 11 and 21 are intact. X-ray shows a homogeneous focus of bone tissue rarefaction. The focus is 3.5x2.5 cm and has clear margins. Against the background of rarefied bone tissue there are projections of intact teeth 11 and 21; periodontal fissure is visible. Make the provisional diagnosis:
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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 42-year-old man came to the prosthodontic clinic. He complains of inability to chew his food due to partial loss of teeth. Objectively in the lateral regions teeth 18,16, 15, 25, 26, 28, 38, 35, 36, 44, 46, 48 are missing. Other teeth present with I-II-degrees of mobility. The patient is diagnosed with generalized periodontitis of the II-degree. What type of denture would be optimal for this patient?
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A man complains of destroyed crown of the 16 tooth. Objectively the crown portion of the 16 tooth is completely destroyed. The patient is diagnosed with chronic granulating periodontitis of the 16 tooth and this tooth needs to be extracted. What type of anesthesia should be used for this procedure?
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A 25-year-old man was brought to the hospital for specialized medical care 48 hours after he received a shrapnel wound of the maxillofacial area. Examination shows a large gaping wound of irregular shape in the soft facial tissues. Wound edges are infected and swollen. What type of surgical wound treatment should be conducted at this stage?
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During intraoral examination the dentist suspected that the patient has syphilis. What should the dentist do in this case?
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During application of tuberal anaesthesia the patient developed rapidly increasing tissue edema and reduced mouth opening. What resulted in such a condition?
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After extraction of tooth 46, a 41-year-old man noticed a dark defect on the distal contact surface of tooth 45. The defect is limited to the enamel, has blurred margins and dark brown color. The affected tissue crumbles when probed. Make the diagnosis:
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A 35-year-old man complains of persisting pain in tooth 24, which intensifies on biting. Objectively on the distal masticatory surface of tooth 24 there is a deep carious cavity filled with food debris. Percussion of cavity bottom is painless, there is no pain response to thermal stimuli. Percussion of tooth 24 is acutely painful: X-ray shows no pathologic changes of periapical tissues in the area of root apices of 24. What is the most likely diagnosis?
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Decay-missing-filled index of a 6.5-year-old child is DMF+df=7. Fedorov-Volodkina hygiene index is 1.5. Fissures in the permanent molars are intact, deep, and open. What method of caries prevention would be advisable in this case?
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A woman came to the dental surgeon with complaints of teeth mobility. After objective examination and X-ray analysis she was diagnosed with generalized periodontitis of the 1-2 degrees of severity. Which teeth of those affected by periodontitis should be extracted?
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