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KROK 2 Dentistry 2011 Questions | KROKEXAM
Browse 2011 KROK 2 Dentistry exam questions with answers and explanations.
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A 38-year-old patient complains of tension and enlargement of her lower lip and eyelids occuring after taking aspirin for headache. The edema resolves soon after taking antihistaminic drugs. What is the most likely diagnosis?
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Parents of a 5-month-old baby complain of food refusal, ulcers on the palate. The infant was born prematurely, is now artificially fed. Objectively: at the junction of hard and soft palate there is an oval well-defined ulcer, covered with yellow-gray film and limited by a hyperemic swelling, protruding above the surface of oral mucosa. Which group of drugs should be administered for the aphtha epithelizati-on?
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A 35-year-old male consulted a dentist about the 26 tooth extraction. After the patient had been given tuberal anaesthesia, he presented with progressing tissue edema and limited mouth opening. This condition was caused by:
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After removal of dental deposit an 18-year-old patient underwent preventive examination. It revealed painless chalky spots in the precervical area on the vestibular surface of the 22 and 41 teeth. Result of enamel resistance test is 7 What morphological changes are typical for this disease?
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A 10-year-old child complains of sore throat, cough, fever (up to 38°C). These presentations turned up 2 days ago. Objectively: acute catarrhal stomatitis is present. Tonsils are swollen, hyperemic, covered with yellow-gray friable film which can be easily removed. Submandibular and cervical lymph nodes are significantly enlarged, painful on palpation. Laboratory analysis revealed leuko- and monocytosis. What is the most likely diagnosis?
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A 50-year-old patient complains about missing of the 37, 36, 45, 46, 47 teeth. The 35, 38, 44, 48 teeth are intact and stable, their crowns exhibit anatomic form, sufficient height, relative parallelism. Fulcrum line typically goes through the 35 and 44 abutment teeth. What fixing element should be used in a clasp denture supported by the 35,44 teeth?
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A 60-year-old patient complains of pain in the masticatory muscles and temporomandibular joint. The dentures were fabricated a month ago. Objectively: face configuration is abnormal, the lower third of the face is elongated, the lips can only be closed with difficulty, the speech is indistinct. When smiling, the base of the complete removable denture is exposed. What mistakes were made during the fabrication of complete removable dentures for the upper jaw?
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A 58-year-old patient needs dental prosthetics. Objectively: the 22 tooth is stable, intact. The atrophy of the alveolar crest is present, the palate is flat. It is planned to fabricate a removable denture. What tactics should be chosen in respect of the 22 tooth?
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A 39-year-old patient needs a clasp denture with porcelain teeth for the lower jaw. What method should be applied while substituting wax with plastic in order to avoid mold flash that may cause bite opening?
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A 22-year-old patient was undergoing treatment of the 25th tooth for deep acute caries. During preparation a dentist accidentally opened the horn of pulp. What method of treatment should be applied?
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A 39-year-old patient complains of some soft ulcers and tubercles on the oral mucosa, gingival hemorrhage, pain and loosening of teeth. Objectively: mucous membrane of tongue and gums presents single ulcers with soft, swollen, slightly painful edges, covered with a yellow film. Regional lymph nodes are enlarged, soft, painless, not adherent to the surrounding tissues. What is your provisional diagnosis?
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A patient complains about mobility of the 26, 27, 28 teeth, periodic pain, sensation of heaviness in the corresponding half of the upper jaw, haemorrhagic discharges from the left side of nose. These presentations have been observed for 4 months, within the last month the pain has become worse, the patient presents now with general weakness. Examination of the oral cavity reveals the grade II mobility of the 26, 27, 28 teeth. On palpation of the maxillary tuber, the bone wall was found to be absent. X-ray picture shows a homogeneous shadowing of maxillary sinus; bone structures have unclear contours. What is the most likely diagnosis?
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An 8-year-old boy was diagnosed with chronic fibrous pulpitis of the 21 tooth. It was treated by extirpation method. Choose the material for root filling:
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A 62-year-old patient has a median mandibular fracture complicated by pseudoarthrosis. Objectively: the dental formula is 33, 34, 35, 36, 37, 47, 46, 45, 44, 43. The teeth are intact, stable, with high crowns. There is minor mobility of fragments without displacement. What is the most appropriate type of denture for this patient?
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During extraction of the 47 tooth its distal root was broken halfway along its length. What tool should be chosen for extraction of the residual root fragments?
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A patient consulted a doctor about recurrent pain in the frontal part of his upper jaw. He has history of previous treatment for pulpitis. Objectively: the crown of the 12 tooth is restored with a filling. X-ray picture of the upper jaw shows an area of bone tissue destruction (up to 1 cm in diameter) at the root apex of the 12 tooth. The root channel of the 12 tooth is filled up to the top. The patient was diagnosed with cystogranuloma of the 12 tooth. Choose the best method of treatment:
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Preventive examination of a 20-year-old student revealed chronic candidiasis of the oral mucosa, generalized lymphadenopathy. He has a 1-year history of herpes simplex. The body temperature often rises to 37,4 — 37,5°C, the patient has lost 8 kg of body weight over the last month. These symptoms may be indicative of the following disease:
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A 38-year-old male patient complains of a carious cavity. He had experienced spontaneous dull pain in the tooth in question before. Objectively: the distal masticatory surface of the 37 tooth presents a deep cavity made of soft pigmented dentin. Percussion is painless. After removing the decay from the cavity, cold water has caused pain lasting for about a minute. X-ray picture shows the deformation of the periodontal gap in the region of the 37 root apices. What is the most likely diagnosis?
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A 32-year-old patient complains of experiencing dryness and burning of tongue back for a week. The burning intensifies during taking irritating foods. Some time ago he had pneumonia and was treated with antibiotics. Objectively: skin and oral mucosa are pale. The lingual mucosa is hyperemic and edematous, the folds at the back of tongue are covered with the crumbling gray-white plaque, desquamation of the lateral surface of tongue is also present. Saliva is thick and attaches to a spatula. Choose the most effective drug complex for the local treatment:
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A 67-year-old patient needs a complete removable denture for his lower jaw. The adjustment of custom tray is done by method of Herbst. It is required to specify the boundary of tray for the sublingual region, 1 cm away from the midline. What Herbst test should be applied for this purpose?
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A 40-year-old patient has an open occlusion resulting from the bilateral fracture of his upper jaw and following malunion of fragments. The occlusal vertical dimension is maintained only by molar teeth. There is a gap of about 1-1,5 mm between the rest of teeth. The dentitions are without gaps. What kind of treatment would be most appropriate in this situation?
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A 14-year-old child complains of bleeding and pain during eating in the lower right molar. Objectively: the medial contact and masticatory surfaces of the 46 tooth exhibit a large carious cavity filled with red tissue. Superficial probing causes pain and moderate bleeding. Deeper probing causes acute pain. Percussion is painlessl. What is your provisional diagnosis:
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A 10-year-old girl complains of minor pain in a lower jaw tooth occuring during having cold food. Objectively: the masticatory surface of the 36 tooth exhibits a carious cavity with a narrow inlet located within the mantle dentin. Probing causes pain along the enamel-dentin border. Make a diagnosis:
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An 80-year-old patient presented to a clinic for the adjustment of the impression tray for the upper jaw. Objectively: alveolar process exhibits marked homogenous atrophy, maxillary tubers are absent, torus is weakly expressed. Buccal muscles and frenulum of the upper lip are attached almost at the top of the alveolar process, the palatal slope is not steep. How to adjust the impression tray in order to make a close-fitting valve?
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A 32-year-old male complains of constant mandibular movements simulating chewing that take place when he is excited. Besides that, the patient complains of teeth grinding. Objectively: the lateral surfaces of teeth have signs of abrasion, the tubercles are absent. What is the most rational method of treatment?
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An 18-year-old patient complains about body temperature rise, weakness, pain induced by eating and deglutition. Objectively: mucous membrane of the oral cavity is erythematic with multiple petechia. Pharynx is hyperaemic. Regional lymph nodes are enlarged, mobile, painless. In blood: leukocytosis, monocytosis, atypic mononuclears, ESR is 30 mm/h. What is the leading factor of disease development?
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A 72-year-old patient complains of burning pain in the corners of mouth. Objectively: the folds of mouth corners have erosions, covered with white coating that can be easily removed, mucous membrane of mouth corners is macerated, of pearly colour. There is pathological tooth wear and decreased vertical dimension of occlusion. What is your provisional diagnosis?
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A 45-year-old patient presented to aclinic for prosthetics. Objectively: Kennedy III type, I subtype dentition defect is present, the 46, 45, 44, 34, 35, teeth are missing. The bite is fixed. Che Crowns of the 47, 43, 33, 37 teeth are high, of a well-defined anatomical shape, intact. It is planned to fabricate a clasp denture. What system of the clasp denture fixation is the most appropriate in this case?
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After a fall a 28-year-old patient visited the clinic of maxillofacial surgery and complained of restricted mouth opening, skin numbness in the left infraorbital region, upper lip, wing of the nose, pain in the left zygomatic region that gets worse when he opens his mouth. Palpation revealed step deformity. What is the most likely diagnosis?
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A 75-year-old patient has been admitted to the dental department for the right-angle mandibular fracture with a displacement. Objectively: the face is asymmetric due to the post-traumatic swelling, palpation reveals the mobility of fragments and pain. The patient has a lifelong history of epilepsy. What is the best method of treatment?
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Analysis of a 10-year-old boy's jaw models revealed that occlusal plane of the frontal maxillary teeth was of concave form, its lateral parts were convex. Form of the alveolar process also represents deformation of dental arches. The upper jaw is of saddle-like form with abrupt narrowing in the region of premolar teeth. What type of bite is it?
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A 59-year-old patient has a bilateral fracture of mandible in the region of the 44, 34 teeth, other masticatory teeth are missing, toothless fragments are not displaced but mobile. Which orthosis should be used for the immobilization of bone fragments?
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A 23-year-old patient complains of gingival hemorrhages, fatigue, indisposition. The symptoms have appeared quite recently. Objectively: the skin and oral mucosa are pale. Gums bleed when touched. There are petechiae on the mucous membrane of cheeks, lips and palate. What laboratory test will allow to make a diagnosis?
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A 20-year-old patient complains of general weakness, fever, headache. These presentations appeared three days ago. Objectively: the regional lymph nodes are enlarged, painful on palpationl, body temperature is 37,8°C, oral mucosa is hyperemic and edematous. Mucous mebrane of lips, palate, gums, cheeks presents single erosions of polycyclic irregular shape, covered with grayish-white film, painful. Which drugs should be administered for the local treatment of the early disease?
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A patient has been diagnosed with traumatic open angular fracture of mandible with a fragments displacement. Which of the following should be applied for transport immobilization of the fragments?
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A 50-year-old patient needs dental prosthetics. Objectively: the 14, 15, 16, 17, 24, 25, 26, 27 teeth are missing. The state of the abutment teeth is satisfactory. What type of fixation will provide the best conditions for the stabilization of a removable denture?
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A 6-year-old boy hit his forehead one day ago. A few hours later a swelling appeared in the right superciliary region. Objectively: there is a considerable edema of forehead tissues spreading to eyelids of the right eye, the skin over the swelling is cyanotic, the swelling is of soft consistency. Fluctuation is also present. General condition of the boy is normal. Make a provisional diagnosis:
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A 14-year-old child complains about a cosmetic defect in the frontal teeth region. Objectively: enamel of the 11, 12, 21, 22, 31, 32, 41, 42 teeth is thin in the region of cutting edge, there is a sulcate enamel pit 1,5 mm wide which encircles the tooth and is parallel to the cutting edge. The cusps of the 16, 26, 36, 46 teeth are underdeveloped and have conical form. What is the most likely diagnosis?
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Preventive examination of a 45-year-old patient revealed a carious cavity in the 23 tooth located within the mantle dentin. The cavity floor and walls are of dense, markedly pigmented dentin, probing and cold test provoke no pain, percussion of the 23 tooth is painless. Electroodontometry results - 6 mA. What is the most likely diagnosis?
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A 29-year-old patient undergoes a procedure of a metal inlay fabrication by the direct method. The inlay is intended for the 26 tooth. Objectively: the 26 tooth presents a Black class I carious cavity. Electroodontometry results - 6 mA. Examination of the ready inlay revealed a casting defect in the region of the external angle. The dentist's further actions will be:
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