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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 70-year-old patient addressed a hospital with complaints of poorly stabilized complete removable dentures of the upper and lower jaws. What method of arti?cial teeth arrangement is preferable in making of a new complete removable denture?
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A 2.5-year-old child has fever up to 38.5°C, low appetite, rashes in the oral cavity. The disease onset was 3 days ago. Objectively: the skin of the perioral area is covered in scarce vesicles with clear content. Within the oral cavity on the buccal and lingual mucosa there are sharply painful erosions, 2-3 mm in size, with white coating and hyperemic crown. The gums are swollen, hyperemic. The submandibular lymph nodes are enlarged, painful on palpation. Make the diagnosis:
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A 25-year-old man complains of shortterm pain in the tooth on the lower right jaw during eating sweet, hot, and cold food. Objectively: in the 36 tooth on the distal surface there is a carious cavity noncommunicating with the dental cavity, dentin is softened. Probing of the cavity ?oor is painful, percussion is painless. Electric pulp test is 16 microamperes. Make the ?nal diagnosis:
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A 30-year-old woman came to the dentist with complaints of uncomfortable sensation of pressure in her upper right tooth, which aggravates in response to hot stimulus, and foul smell from the mouth. Objectively: there is a deep carious cavity in the 17 tooth, which communicates with the tooth cavity. Deep probing causes severe pain, percussion of the 17 tooth is painful. X-ray: there is slight widening of the periodontal ?ssure near the root apex. Electric pulp test - 70 microamperes. What ?nal diagnosis can be made?
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Medical committee registers the patients, who for a long time lived in an area polluted with radiation. The patients are advised on the diet that will quickly purge the body from radionuclides. The portion of products rich in pectine should be increased in their diet. Name these products:
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A 44-year-old man came to extract destroyed tooth 24. Objectively his face is symmetrical, the crown of 24 is destroyed by 2/3, percussion is painless. Gingival mucosa surrounding the tooth is unchanged. X-ray shows enlarged periodontal ?ssure in the area of the root apex. What is the most likely diagnosis?
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A 46-year-old man complains of constant losing of a ?lling in his lower right tooth. Objectively: in the 16 tooth on the approximal masticatory surface there is a defect of crown hard tissues at 1/3. The tooth has no discoloration, percussion is painless. What construction should be prescribed?
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A 10-year-old boy complains of acute pain attacks in the area of his upper left teeth. The toothache persisted for a night. Objective examination revealed a carious cavity on the masticatory surface of the 26 tooth within parapulpar dentin. Probing is sharply painful at all points of the cavity ?oor. Markedly positive reaction to cold water stimulus is observed. Select the most likely diagnosis:
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In a state of inebriation a 36-year-old woman suffered a domestic accident 4 hours ago. She was delivered to the maxillofacial surgery unit. On examination she was provisionally diagnosed with a deep perforating incised wound of the lateral surface of her face with injured perioral area and parotid gland. The woung edges are gaping. This gaping is caused by:
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The maxillofacial surgery unit received a patient with complaints of inability to close his mouth. This condition occurred when the patient was biting an apple. Objectively there is a frightened expression on the patient’s face, the mouth is open wide, the chin is displaced to the left, salivation is observed. Palpation through the external acoustic meatus detected no movements of the right articular head. What is the most likely diagnosis?
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A 19-year-old girl addressed an oncologist with complaints of slowly growing tumorlike mass on the tip of her tongue. The mass was first noticed 5-6 years ago. The patient requested no medical help. Objectively: there is a pale pink round growth with wide pedicle on the tongue apex; the growth is painless, elastic; there are no changes of mucosa surrounding the pedicle. Submandibular lymph nodes cannot be palpated. What kind of tumor is it?
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During carious cavity preparation in a 20-year-old man, the pulp-chamber ?oor was accidentally perforated and horn of the pulp was exposed. On the carious cavity ?oor there is a point-like puncture surrounded with white predentin. Pink pulp can be seen through the perforation, pulp probing is acutely painful. What treatment should be given to the patient?
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A 37-year-old woman came to the dentist with complaints of brief attacks of toothache caused by eating sweets. Objectively there is a shallow carious cavity within enamel. On probing cavity walls and bottom are coarse; there is no response to thermal stimuli. Make the diagnosis:
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A 24-year-old patient came to the dentist complaining of chalky lesions on the front teeth. Objectively teeth 13, 12, 11, 21, 22, and 23 present with chalky lesions separated by areas of healthy unchanged enamel. Lesion surface is coarse; there is no response to thermal stimuli. Childhood years of the patient were spent in the area with ?uorine level of 1.8 mg/L in drinking water. Make the diagnosis:
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A 48-year-old patient has addressed a hospital with complaints of defects in the paragingival area and slight sensitivity to thermal stimuli. Objectively there are hard tissue defects that resemble a wedge with smooth polished walls on the precervical vestibular surface of the 23 and 24 teeth. Thermal test is slightly positive. What is the most likely diagnosis?
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Parents of a 7-year-old child addressed a hospital with complaints of their child having no permanent teeth in the front area of the mandible. Anamnesis states that the first deciduous teeth erupted at the age of 11 months. Objective clinical examination revealed the following: appearance is without changes; milk occlusion; there are physiological diastema and tremata; edge-to-edge incisor contact. What preliminary diagnosis can be made according to Kalvelis classification?
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A 5.5-year-old child is undergoing preventive examination. There are no complaints from the patient. Objectively: in the precervical area of buccal surface of the 75 tooth there is an enamel patch with loss of natural glossiness. The enamel surface is coarse, painless on probing. Tooth percussion is painless. Thermodiagnosis is negative. Damaged enamel stains with 2% water solution of methylene blue. Make the diagnosis:
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A 68-year-old man has removable partial dentures made for him. At the stage of checking the denture construction, occlusal contact in the lateral areas is cusp-to-cusp and frontal area has sagittal ?ssure. What mistake was made by the doctor?
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An 80-year-old man needs a removable partial denture for the lower jaw. How should the denture boder be located relative to the natural teeth?
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A 52-year-old woman needs a dental prosthesis. Upon objective examination a removable partial laminar denture is determined to be optimal denture construction in her case. What material should be applied to the impression tray edges?
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A 46-year-old man, a teacher, complains of lower teeth mobility that impedes the process of biting. Objectively the dentition is uninterrupted, front teeth demonstrate the II-degree of mobility. X-ray shows straight and filled root canals of 32, 31, 41, and 42. What appliance will stabilize front teeth while retaining their aesthetic appearance?
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A woman complains of spontaneous attacks of acute pain, with practically no intermissions and irradiation into the temple; cold water slightly mitigates the pain. In tooth 26 examiantion revealed deep carious cavity non-communicating with the dental cavity. Probing of the cavity bottom is acutely painful, the tooth is tender on vertical percussion. Make the provisional diagnosis regarding tooth 26:
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A 78-year-old man complains of a painful sore in his mouth that has been persisting for 2 months already. The patient is a smoker. Objectively on the buccal mucosa on the right there is a shallow ulcer up to 1.5 cm in size with lumpy ?oor and uneven margins. There are yellowish granules on its periphery. Palpation is painful, the lesion is soft. Regional lymph nodes are enlarged, painful, and matted together. What is the provisional diagnosis?
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A 37-year-old patient has symmetrical face; the mucosa in the area of the 12 tooth root apex projection is pale pink; palpation is painless; the tooth crown is destroyed by 1/3; percussion is painless. X-ray: the root canal of the12toothis?lled to the apex; granuloma 4 mm in diameter is located near the root apex. Choose the method of surgical treatment:
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A 48-year-old man presents with verruciform, dense, gray-white growths on the buccal mucosa. The growths protrude above the neighbouring tissues and are surrounded by keratinized gray-white spots that cannot be scraped off. Make the provisional diagnosis:
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During preventive examination a patient was diagnosed with precancerous hyperkeratosis of the lower lip vermillion border. What treatment should be prescribed?
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A 63-year-old man complains of fever and multiple painful rashes in his oral cavity and on his face and torso. 3-4 days before the rashes appeared he had noticed a burning sensation followed by sharp shooting pain resembling that which occurs during lumbago. The patient takes cytotoxic drugs for leukemia treatment. On examination there are multiple aphthae located in a row on the vermillion border and labial, lingual, and buccal mucosa on the right. The aphthae have hyperemic borders, they are not fused together and are sharply painful on palpation. The right side of the face presents with erythematous spots, vesicles, and erosions. Make the provisional diagnosis:
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A 34-year-old man presents with persisting dull pain in his tooth, which aggravates on biting. One week ago the tooth was treated for deep caries. Objectively on the masticatory surface of tooth 36 there is a filling, percussion is painful, there is a supracontact observed in the area of 36. X-ray shows unchanged periodontium. What mistake was made when tooth 36 was filled?
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A 35-year-old man complains of persisting pain in tooth 24, which intensi?es on biting. Objectively on the distal masticatory surface of tooth 24 there is a deep carious cavity ?lled 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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A 22-year-old man complains of tearing, throbbing, constant, intensifying pain in the tooth on the upper left jaw. The pain has been persisting for 4 days. Objectively tooth 26 has deep carious cavity non-communicating with the dental cavity. Probing is painless. Percussion is acutely painful. The tooth is mobile. Mucogingival fold in the area of tooth 26 is painful on palpation. Make the diagnosis:
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A 22-year-old patient has suffered unilateral linear fracture in the area of the gonial angle. Immobilization was provided with full dental brace with loops and intermaxillary elastic expansion. Recovery was uncomplicated. The brace should be removed after:
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A 27-year-old patient was provisionally diagnosed with acute suppurative odontogenic maxillary sinusitis. What radiology method would be the most informative in this case?
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A 22-year-old man presents with swollen and hyperemic mucosa of the retromolar area; tooth 38 is covered with hood-shaped gingival ?ap that discharges pus on palpation; body temperature is 37.5°C. What urgent aid should be given to the patient in this case?
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A 43-year-old man came to the maxillofacial surgeon with complaints of aesthetic defect. Examination revealed excessive accumulation of adipose tissue in the patient’s neck and upper torso, which resembles collar with unclear magins; neck mobility is reduced. Family history shows the same symptoms to be present in the patient’s father. Make the provisional diagnosis:
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A 73-year-old man is registered for regular check-ups in an oncological clinic after completion of the combined treatment for oral mucosa cancer stage II (radiation therapy and surgery). During one of the routine check-ups an area of exposed mandibular bone is detected. There are no in?ammatory changes of surrounding mucosa. A ?stula tract with soft granulation is detected. Mandibular X-ray shows a sequestrum without clear margin between healthy and necrotic bone. What is the most likely provisional diagnosis?
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A 19-year-old patient came to a dentofacial clinic with complaints of pain in the gonial angle on the right, impaired mouth opening and painful chewing. The signs had been persisting for 5 days, emerged spontaneously and had been aggravating gradually. Mandibular contracture is of the III-degree. On examination of the oral cavity: hyperemia, edema of the retromolar space on the right, hood-shaped mucosa from under which pus is being discharged and 2 tooth tubercles can be detected. X-ray shows oblique medial tooth position. Make the diagnosis:
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Parents of a 6-year-old child complain of their child having a gradually enlarging neoplasm in the left parotid-masticatory region. Skin over the tumor is without discoloration. The tumor is painless, but when the head bends down the tumor increases in size and assumes bluish coloring. What disease can be suspected in the child?
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An 11-year-old child presents with protrusion of the upper front teeth, there are tremata and diastema between the child’s teeth. What apparatus can be used for treatment of this pathology?
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A 40-year-old patient complains of pain in the tragus area, clicking during mouth opening, stuffed ears. Objectively the face is symmetrical, mouth opening path is straight. Dentition defect can be estimated as the I class by Kennedy; the 18, 17, 16, 26, 27, 28 teeth are missing. In this case the load would be the most traumatizing for the following anatomical str
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A 38-year-old man complains of sensation of a foreign body on his tongue and development of gag re?ex during talking. The signs appeared after the prolonged taking of antibiotics. Objective examination detected thickened and pigmented ?liform papillae enlarged to 2-3 cm in size. Histological analysis detected papillar hyperplasia and marked keratinization without alteration of the surrounding tissues. What is the most likely diagnosis?
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