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KROK 2 Dentistry 2013 Questions | KROKEXAM
Browse 2013 KROK 2 Dentistry exam questions with answers and explanations.
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After examination a 5-year-old child was diagnosed with acute total pulpitis of the 74 tooth. What treatment will be most efficient in this case?
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Examination of a 9-year-old child revealed chalky spots in the cervical part of the 12, 11, 21, 22 teeth. The spots appeared two weeks ago. Their surface is dull in appearance and can be stained with methylene blue. The affected teeth are nonresponsive to cold stimulus. What is the most likely diagnosis?
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A 54-year-old patient complains of a tumour-like formation in the region of the lower lip which appeared 1-1,5 months ago. Objectively: on the vermilion border of the lower lip on the right there is a roundish tumour up to 1 cm in diameter with raised rolled edges. The tumour is painless, the regional lymph nodes are not enlarged. What is a provisional diagnosis?
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A patient complains of spontaneous, paroxysmal, irradiating pain with short pain-free intervals. The pain arose 2 days ago and occurs only at night. Make a provisional diagnosis:
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An orthopedist plans to fabricate a porcelain-fused-to-metal crown for the 23 tooth. In order to correct its abnormal position in the dental arch the orthopedist is going to use a cast post and core. What is the maximum permissible value (in degrees) of the core deviation from the tooth axis?
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A 34-year-old patient had got in a car accident. The patient stayed conscious. He complains of headache, dizziness, general weakness, nausea. 12 hours after the injury the patient got "raccoon eyes"(periorbital haematomas) within the limits of the circular muscle of eye. What fracture does the victim have?
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After a car accident a patient consulted a dentist about pain at the base of the nose. Palpation reveals tenderness of the nose wall, mobility of the nasal bones. Nasal passages are filled with blood clots. What is the provisional diagnosis?
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A 47-year-old female patient complains of inability to eat hot and cold food, as well as of intense pain caused by sour, sweet and salty food. Objectively: there is a slight loss of enamel on the molars and incisors. Probing and cold test cause acute pain. What is the most likely diagnosis?
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A 43-year-old patient complains of a tumour in the right submandibular region which appeared two months ago after having flu. Objectively: palpation of the right submandibular region reveals a painful spherical neoplasm of dense elastic consistency with regular outlines which is not attached to the skin. Submandibular salivary gland secretes transparent saliva. Sublingual plica is unchanged. Which disease are these clinical presentations typical for?
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A 40-year-old patient complains of pain caused by cold and sweet food in the 11,21 teeth, as well as of a cosmetic defect. Examination of the 11, 21 teeth revealed some oval, diagonally arranged enamel defects on the convex part of the vestibular surface of tooth crowns. The defects had smooth, glossy, dense floor. The patient has a history of thyrotoxicosis. What is the most likely provisional diagnosis?
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A 36-year-old patient complains of pain under the dental bridge. After its removal the patient has been found to have an ulcer 0,3x0,5 cm large on the alveolar process. The ulcer is slightly painful and soft, the surrounding mucosa is hyperaemic, submandibular lymph nodes are not enlarged. What is a provisional diagnosis?
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A 42-year-old female patient complains of tooth mobility, difficult mastication. Objectively: face configuration is unchanged. The 35,36,38,44,46,48 teeth are missing. The 31, 32, 41, 42 teeth exhibit 1-2 grade mobility. What is the most efficient denture construction in this case?
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A 65-year-old patient needs prosthetic services. Objectively: the 43, 33 teeth are decayed by 2/3. EPT result is 6 mA. Other teeth in the lower jaw are missing. What crowns should be fabricated for fixing the removable denture?
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A 64-year-old patient presents with bleeding from the left nostril, mobility of the upper left teeth. For the last 2 years the patient has had dull pain in the left side of maxilla. On the left side of neck there is a dense tumour-like formation. The patient is exhausted. What is the most likely diagnosis?
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A patient consulted a dental surgeon about fever up to 37,6°C, soft tissue swelling, pain in the 47 tooth on the lower jaw on the left, the pain is getting worse when the tooth is touched by the antagonist. Objectively: mucogingival fold of the alveolar process is hyperemic and flat on the vestibular side of the decayed 47 tooth. What is the most likely diagnosis?
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A 40-year-old patient complains of constant intense throbbing pain in the 23 tooth lasting for 3 days. This problem hasn't bothered him before. Vertical and horizontal percussion is positive, the tooth is mobile, mucous membrane around the 26 tooth is hyperemic and edematous. Palpation of the mucogingival fold in the root apex projection is painful. What is the most likely diagnosis?
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A 48-year-old female patient had been delivered to a hospital with a cheek wound and severe headache, nausea, dizziness. It is known from the history that the patient had got a trauma as a result of a fall. After examination she was diagnosed with a contused lacerated wound of cheek, closed craniocerebral injury, brain concussion. This trauma can be qualified as:
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A 12-year-old boy complains of fever up to 38 °C, weakness, headache, pain in the mouth, presence of vesicles and ulcers. The acute condition developed three days ago. The patient has a history of recent pneumonia treated with antibiotics. Objectively: oral mucosa is hyperemic and edematous. The mucosa of lips, tongue and cheeks has large erosions covered with fibrinous pellicle. The lips are covered with thick brown crusts. The back of the hand has papules of doublecontour colour. Which of the listed agents should be primarily used in the topical treatment?
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A 29-year-old patient complains of decay of the 21 tooth, an aesthetic defect. Objectively: on the medial surface of the 21 tooth there is a carious cavity, the cutting edge is partly decayed. Specify the class of this cavity according to Black's classification:
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A 20-year-old patient seeks dental prosthetics. Objectively: on the occlusal surface of the 16 tooth there is a cavity, two walls of the tooth crown are intact. Method of orthopedic treatment is determined by the degree of destruction of the occlusal surface of teeth (IROPZ-index). Who suggested its definition?
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A 26-year-old patient needs prosthetics. Objectively: crown of the l6 tooth is decayed by 1/3. It is planned to restore its anatomical shape with a metal inlay. What is the first stage of making a cavity for the inlay?
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A 19-year-old patient needs a plastic crown for the 22 tooth. The orthopedist has already taken working and auxiliary impressions. What technological process should be next?
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A 25-year-old patient complains of heavy gingival hemorrhages, pain in the oral cavity, weakness, fatigue, fever up to 38°C. These presentations appeared a week ago. Objectively: the patient is pale, adynamic. Examination of the oral mucosa reveals multiple hemorrhages, friable gums, necrotic areas on the tops of gingival papillae, as well as enlarged, soft, painless lymph nodes. The oral mucosal lesion can be a symptom of the following disease:
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A 67-year-old patient consulted an orthodontist about missing of the 34, 35, 36, 37, 45, 46 teeth. Orthopantomogram of the remaining teeth shows the alveolar bone resorption in the range of 1/3 of the interdental septa height. What construction should be offered the patient?
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During an armed conflict soldier K. was injured and delivered to the station of the separate medical battalion. The patient has a gunshot wound of his right cheek, splintered fracture of the body of mandible, arterial bleeding from the wound. A brigade of the separate medical battalion performed surgical debridement and final bleeding arrest. Specify the scope of further medical and evacuation actions for this patient:
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Preventive examination of a 4,5-year-old child revealed some hidden cavities on the contact surfaces of the 54 and 55 teeth. After removal of the overhanging edges of the enamel the softened dentin could be easily removed with an excavator within the mantle dentin. Select the optimal material for a permanent filling:
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An 18-year-old student needs prosthetic porcelain-fused-to-metal denture for the 11, 21 teeth. There are no contraindications for the use of such construction. What is the most appropriate material for taking impressions?
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A 40-year-old patient complains of experiencing eating difficulties for 3 days due to the injury of the alveolar process mucosa of maxilla. Objectively: at a level of the mucogingival fold of the 14,15 teeth on the vestibular side there is a decubital ulcer sized 1x3 mm with smooth pink edges. What is the most likely diagnosis?
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A 50-year-old patient complains of missing of the 37, 36, 45, 46, 47 teeth. The 35, 38, 44, 48 teeth are intact, stable, with anatomically shaped crowns, rather high, relatively parallel to each other. Boundary line has a typical direction along the 35, 44 abutment teeth. What fixation element should be used in a clasp prosthesis supported by the 35,44 teeth?
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A 23-year-old serviceman needs orthopedic treatment in a specialized hospital. The patient has been diagnosed with false joint in the anterior lower jaw. The teeth are intact, stable, 3 on each side. Orthopedic treatment can be carried out using a bridge prosthesis, if the jaw defect is no bigger than:
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A 22-year-old patient complains of a painful swelling in the right parotid gland. A week earlier the patient got a cheek abrasion which healed under the purulent crust. Over the past two days the patient had observed progressing pain and fever up to 38,6°C. Objectively: there is a soft tissue edema in the right parotid region, the skin is slightly strained but has not changed in colour. There is a dense painful infiltration 2,5x3,5 cm large, the skin over it exhibits limited mobility. The mouth can be fully opened, the mucous membrane around the orifice of the salivary duct is unchanged, the saliva is transparent. What is the most likely diagnosis?
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A 33-year-old female patient has been admitted to the maxillofacial department for pain and edema of the right submandibular region, body temperature rise up to 39,5°C. Objectively: the patient has asymmetric face because of soft tissue edema of the right submandibular region, palpation reveals a dense infiltration, the skin over it is hyperemic, does not make a fold. The 46 tooth has a deep carious cavity. What is the most likely diagnosis?
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Biopsy material obtained by puncture of a maxillary tumour looks like a foulsmelling mush. What kind of tumour is it typical for?
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A 29-year-old female patient complains of peeling, dryness and burning of the lower lip. Objectively: on the vermilion border of lip there are multiple gray scales with tightly attached center and peeling off edges. The scales are found all across the mouth and from the wet-dry line to the middle of the lip. The skin is not affected. Scales removal doesn't lead to erosions. The patient has the lability of psychoemotional sphere. What is the most likely diagnosis?
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A 50-year-old patient has median lower jaw fracture with formation of a false joint. The 38, 32, 31, 41, 42, 48 teeth are missing. The remaining teeth are intact, stable. There is no displacement of lower jaw fragments. X-ray picture shows a bone tissue defect up to 1 cm large. What prosthesis is indicated?
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During the examinations and everyday orthopaedic manipulations a dentist uses a dental mirror. What is the way of its sterilization?
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A 59-year-old patient presented to a clinic for prosthetics. Three months ago he was treated for the fracture of the body of mandible on the left. The 18, 27, 28, 38, 32,31,41,42,43,44,45,47,48 teeth are missing. The patient has left-sided cross-bite with lateral occlusal contact. What tactics should be chosen?
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A 32-year-old patient presented to a prosthetic dentistry clinic with a diagnosis of maxillary fracture.The fracture can be treated by means of standard maxillomandibular Zbarzh set. Which construction provides the intra-oral fixation?
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A 35-year-old patient complains about itch, burning and edema of lips. These presentations occured a week ago. Objectively: there is reddening of vermilion border and skin, especially in the region of mouth corners, there are also vesicles, crusts, small cracks along with erythematous affection of vermilion border. What is the most likely diagnosis?
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A 44-year-old male patient complains of fatigue and headache, limb numbness, dry mouth, burning and pain in the tongue. Objectively: skin and oral mucosa are pale. There are painful cracks in the corners of mouth. Dorsum of tongue is smooth, glossy, with bright red striae. Blood count: Hb- 70 g/l, RBCs -1,5 × 1012/l, colour index -1,6, leukopenia, thrombocytopenia, lymphocytosis. What is the most likely diagnosis?
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