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KROK 2 Dentistry 2018 Questions | KROKEXAM
Browse 2018 KROK 2 Dentistry exam questions with answers and explanations.
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A removable full denture for the lower jaw is being made for a 75-year-old man. Objectively the alveolar process is slightly atrophied. Herbst tests are performed during fitting of an impression tray. When lips are stretched forwards the tray slips off. Where should the tray edge be shortened in this case?
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A 18-year-old boy complains of bleeding and pain in her gums. The disease onset was 4 days ago. Objectively the skin is pale, body temperature is 38.5°C. Her submandibular lymph nodes on the left are enlarged, painful, non-fused with the surrounding tissues. The gingival papillae and gingival margin in the area of 33, 34, 35, 36, and 37 are hyperemic, ulcerated, and covered in necrotic deposit. Teeth present with soft dental plaque. Make the diagnosis:
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A 60-year-old man complains of stabbing pain near the root of the tongue on the right, which develops during eating, especially sour food. Objectively: there is a swelling in the right submandibular area. On palpation the submandibular gland is dense and enlarged. Excretory duct orifice of the right submandibular gland is dilated and produces mucopurulent secretion. What is the most likely diagnosis?
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A 19-year-old woman, an actress, complains of discoloration of her left maxillary central incisor. One year ago the pulp of this tooth was removed and the tooth was ?lled. Gradually the tooth assumed grayish color. Objectively the 11 is ?lled, discolored, ?rm, painless on percussion. Deep occlusion is observed. What part of the clinical presentation contraindicates installation of an all-porcelain crown?
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A 32-year-old woman needs a denture. On objective examination the decision was made in favor of porcelain-fused-to-metal crown. What material should be used in this case to obtain the impression?
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Parents of a 6-month-old child complain of their child having a large amount of dental deposit in the oral cavity. Objectively the oral mucosa is hyperemic, covered in white easily removed deposit that resembles curdled milk. What is the causative agent of this disease?
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A 55-year-old man complains of heartburn and unpleasant sensations in his tongue. The patient has been suffering from gastritis with low acidity for approximately 5 years. What changes in the tongue are the most likely to be detected in this patient?
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A 10-year-old child is referred by the orthodontist for extraction of tooth 53. Objectively the crown of 53 is retained, the tooth is immobile. X-ray of tooth 53 shows root resorption by less than 1/3. Choose the best instrument for extraction of tooth 53:
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A 24-year-old woman has Richmond crown being made to restore the crown of the central maxillar incisor. The cap is completed. What is the next step of prosthesis-making?
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Removable full dentures are being made for a 65-year-old man. Progenic occlusion is determined. What are the speci?cs of teeth placement in case of progenic occlusion of edentulous jaws?
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A 53-year-old patient complains of pain and clicking in the left temporomandibular joint. Objectively: the face is symmetrical, palpation of the lateral pterygoid muscles is painful on the left side. Mouth opening is reduced. Tomography shows smooth bone outline of joint surfaces. Which disease of those listed below corresponds with this clinical presentation?
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A 47-year-old man complains of partial loss of his upper teeth. The patient’s medical history states loss of teeth due to trauma sustained 3 months ago. 11 and 12 are lost. 13, 21, and 22 are destroyed by 2/3 and restored with ?llings. Occlusion is orthognathic. What denture construction would be optimal for this patient, considering his occupation as a lecturer?
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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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During preventive examination a 40-yearold 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 4-year-old boy has been diagnosed with acute purulent periostitis of the upper jaw originating from the 64 tooth. Choose the optimal treatment tactics:
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An adolescent complains of reduced and painful mouth opening, dif?culties when eating, and swelling in the left mandibular angle that developed after tooth 37 was extracted 3 days ago. Objectively the face is asymmetric due to soft tissue swelling in the area of the left mandibular angle. Mouth opening is painful and reduced to 2.0 cm. Disturbed occlusion is observed. Palpation of the left mandibular angle is painful, the tissues are soft, bone crepitus is detected. "Indirect load to the chin" symptom is positive in the area of the left mandibular angle. The socket of the extracted tooth is packed with iodoform gauze. What is the most likely diagnosis?
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A 32-year-old man has metallic inlay made for him. The denture is being made for tooth 36 with Black’s class I carious cavity. What surfaces of the inlay should be ?led down and polished before ?xing the denture?
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A 12-year-old boy complains of painful and bleeding gums on his upper jaw. Objectively the gingival margin in the area of the 13, 12, 11, 21, 22, and 23 teeth is swollen, hyperemic, deformed due to gingival overgrowths. Gingival papillae cover the crowns by 1/3 of their height, bleed on touch. Upper front teeth are overcrowded. X-ray shows no pathological changes of the periodontium. What drugs should be administered for topical treatment in the first place?
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A 43-year-old woman complains of mobility and displacement of her upper front teeth. Objectively: dental formula is . Teeth are slanted towards the vestibular side, diastema and tremata are observed, I-II-degree teeth mobility is detected. Select the orthodontic appliance for correction of teeth misalignment as a part of complex treatment of periodontal disease:
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A 45-year-old man complains of toothache and mobility of his upper front teeth. Objectively his 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 . Dental cervices of 13 12 11 21 22 are exposed and demonstrate mobility of the III-degree. Mobile teeth are to be extracted and immediate denture is to be made for the patient. How soon after the teeth extraction should such dentures be inserted?
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A 56-year-old man complains of swelling and pain in his right parotid area. The swelling was noticed 5-6 months ago. Objectively right-sided paresis of the facial muscles can be determined. Palpation reveals there a modrately painful tuberous tumor fused with surrounding tissues. In the center of the tumor there is an area of softening. Submandibular and cervical lymph nodes on the right are enlarged and dense. The mouth can be opened without restriction. There is no saliva outflow from the opening of the right parotid gland. What provisional diagnosis can be made?
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Parents of a 3-year-old child report that the child suffers from constant pain in the upper front teeth. Objectively: the coronal part of the 61 tooth is gray and decayed. Probing of the root canal ori?ce is painful and accompanied by bleeding. The tooth percussion provokes acute pain. Mucosa is hyperemic, edematic and painful. Palpation in the region of the 61 and 62 teeth reveals a ?stula. What is the provisional diagnosis?
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Puncture sample taken from a 13-yearold child contains giant Reed-Sternberg cells. What diagnosis can be confirmed by the cell content of this puncture material?
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A 25-year-old man complains of genelal malaise, high body temperature, acute gingival bleeding, and gingival enlargement. He has a history of nosebleeds. Objectively the patient presents with systemic lymphoid hyperplasia, pallor of skin and mucosa, II-III-degree hyperplasia of the gingival mucosa, hemorrhages into the buccal mucosa, and ulcers covered with gray deposit. What examination method would be optimal for diagnosis-making in this case?
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A 19-year-old young man complains of constant pain in tooth 22, which intensi?es on biting with this tooth, sensation of "protruding" tooth, and upper lip edema. The patient has history of upper jaw trauma. Objectively tooth 22 is intact. Vertical percussion is acutely painful. The upper lip is swollen, mucogingival fold in the area of tooth 22 is red and painful on palpation. What examination method is necessary for diagnosis making in this case?
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A patient complains of carious cavity in tooth 11. The ?lling was lost one week ago. The tooth crown is dark, there is residual ?lling material at the bottom of the carious cavity. Vertical percussion is painless. X-ray shows an oval area of bone tissue resorption with clear margins, 0.4?0.3 cm in size. The root canal is ?lled by 2/3 of its length. What is the most likely diagnosis?
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A 28-year-old man is referred for oral cavity sanation. On examination there is a ?lling on the masticatory surface of tooth 17, percussion is painless. Mucosa in the root apex projection of 17 is cyanotic, vasoparesis symptom is positive. X-ray shows foci of bone tissue destruction with fuzzy margins in the area of root apices, root canals are not ?lled. 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 ?rmly 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 32-year-old patient presents with body temperature of 38.9°C, general fatigue, impaired speech, inability to eat. This condition has been recurring for the last 4 years in autumn and spring. There are vesicles and erosions with grayish Hbrinous coating on the hyperemic and swollen labial and buccal mucosa. Nikolsky’s sign is negative. What is the most likely diagnosis?
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A 28-year-old woman complains of persisting pain in tooth 34, which intensifies on biting. Four days ago arsenic paste was left in the 34. The patient missed her appointment with the dentist. Objective examination detected occlusive dressing on the distal masticatory surface of tooth 34, percussion is acutely painful. What treatment tactics would be the most advisable in this case?
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A 35-year-old man came to the prosthodontic clinic with complaints of teeth mobility on his lower jaw. What type of occlusion stabilization is recommended in this case?
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A 57-year-old patient complains of tooth mobility and inability to eat. Objectively: the lower 35, 36, 37, 38, 44, 45, 46 and 48 teeth are missing; the 31, 32, 33, 34, 41, 42, 43, 47 teeth exhibit grade II mobility, their clinical crowns are low, tooth equator is not pronounced. What is the optimal denture construction in this case?
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A 16-year-old young man complains of temperature increase up to 38.7°C, pain when eating and swallowing, foul acrid smell from his mouth. Lymph nodes, especially cervical ones, are enlarged, mobile, and painless. Objectively the patient presents with generalized hyperemia of the oral mucosa, multiple petechiae, necrotic spots, and profuse coating of the anterior pharynx. Blood test: increased ESR, marked leukocytosis, monocytosis, atypical mononuclear cells, thrombocytopenia. What is the most likely diagnosis?
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A 57-year-old retired man complains of attacks of burning pain and rashes on the skin of his face and oral mucosa on the right. Anamnesis: a course of radiation therapy for treatment of gastric disease, past case of chickenpox. Objectively: along the third branch of the trigeminal nerve the skin of the face presents with isolated erosions covered in Hbrinous coating. There are multiple vesicles on the hyperemic and swollen oral mucosa. Right-sided lymphadenitis is observed. What is the most likely diagnosis?
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A 12-year-old girl has complaint of a carious cavity in her tooth. Objectively: there is Black’s class 1 carious cavity in the 36 tooth; it is localized in the parapulpar dentin; the mouth of the cavity is wide. The dentin is dense and pigmented. It is sensitive to cold stimulus, percussion is painless. What is the most likely diagnosis?
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A 35-year-old woman has complaints of cosmetic defects of the front upper teeth crowns. The defects have been aggravating for the last 10 years. The patient suffers from unpleasant sensations when brushing her teeth, and when chemical stimuli are applied. Objective examination revealed defects localized in the enamel of the front upper teeth vestibular surface. The defects are oval, saucer-shaped, and have clear margins. Response to probing and cold stimuli was positive. Make the diagnosis:
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A patient complains of dull ache in the 16 tooth, which occurs during eating cold food. Previously the tooth had been filled due to deep caries, the filling was lost 1 year ago. Objectively: a deep carious cavity that does not communicate with the tooth cavity is present; percussion is painless, probing is painful along the whole floor of the carious cavity. Electric pulp test - 50 microamperes. Thermodiagnosis is painful. Make the diagnosis:
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A 35-year-old man complains of thickening of his maxillary alveolar process. Preliminary diagnosis of maxillary radicular cyst was made. What substance will be obtained as the result of the puncture of the alveolar process in the area of buccal thickening?
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Six months ago a 40-year-old man had his tooth 26 extracted; afterwards his oral cavity and maxillary sinus became communicating and the patient developed the first signs of maxillary sinusitis. What surgical procedure should be performed in this case?
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A 46-year-old woman complains of bleeding gums, suppuration, teeth mobility. She has been presenting with these signs for 10 years. On examination her upper and lower gums are hyperemic, swollen, bleed on touch. In the area of 42, 41, 31, and 32 periodontal pockets are up to 8 mm deep, contain purulent discharge; these teeth demonstrate mobility of the II-degree, other teeth present with mobility of the I degree. In the area of 42, 41, 31, and 32 X-ray shows interalveolar septa resorption by 1/2 of the root length and signs of osteoporosis. What is the most advisable method of surgical treatment in this case?
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