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KROK 2 Dentistry 2019 Questions | KROKEXAM
Browse 2019 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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A 64-year-old man undergoes fixation of a removable partial denture for the lower jaw. The dentist examined the denture base and noticed there a clearly visible ’’marble pattern’.’ This net of white lines runs through the whole plastic base. What is the most likely cause of this defect?
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To make the external prosthesis for a 62-year-old man it is necessary to obtain a Hippocrates facial moulage of this patient. What impression material should be used?
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A 29-year-old man needs to replace a number of dentition defects on his upper jaw. The defects can be replaced with dental bridges with aesthetical coating. "Sinma-M" plastic coating is securely attached to the frame of the full cast metal-plastic dental bridges with:
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A 38-year-old man complains of sensation of a foreign body on his tongue and development of gag reflex during talking. The signs appeared after the prolonged taking of antibiotics. Objective examination detected thickened and pigmented filiform papillae enlarged to 2-3 cm in size. Histologically papillar hyperplasia and marked keratinization without changes in the surrounding tissues were detected. What is the most likely diagnosis?
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A 30-year-old woman addressed a dental surgeon with complaints of uncomfortable sensation of pressure in her upper right tooth, which aggravates due to hot stimulus, and foul smell from the mouth. Objectively: there is a deep carious cavity in the 17 tooth, which penetrates into the tooth cavity. Deep probing causes severe pain, percussion of the 17 tooth is painful. X-ray: there is slight widening of the periodontal fissure near the root apex. Electric pulp test - 70 microamperes. What final diagnosis can be made?
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A 16-year-old girl complains of constant dull pain in her lower tooth. The pain aggravates on biting. Objectively in 46 there is a deep carious cavity communicating with the dental cavity. Comparative percussion is sharply painful. Thermal stimuli and probing are painless. Mucosa in the area of tooth 46 is markedly hyperemic, swollen, painful on palpation. X-ray shows an irregularly shaped focus of bone tissue destruction with blurred margins. Make the diagnosis:
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A 27-year-old woman complains of general weakness and pain in her lower jaw during swallowing. Two days ago she developed pain in tooth 38. Mouth opening is impossible. What anesthesia should be given to the patient before examination of the oral cavity and extraction of 38?
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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 38-year-old woman complains of burning pain in her lips and angles of her mouth, their dryness. She has an 8-year- long history of diabetes mellitus. Objectively: the vermillion border is dry, congestively hyperemic, covered in scales of variable size. In the angles of the mouth there are fissures covered in white coating, the skin is macerated. What ointment should be prescribed for topical treatment in the given case?
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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 covered in grayish fibrinous 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 50-year-old woman complains of pain and creaking in her temporomandibular joint. Objectively there are multiple premature occlusal contacts and localized pathologic tooth wear. The teeth are stable, with exposed cervices; the gingival margin is hyperemic. Selective teeth shaving is planned. How many visits to the dentist are necessary for the full procedure?
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A 28-year-old patient complains of pain and bleeding of gums in the frontal part of the upper jaw on the left. Two years ago, the 22 tooth was covered with a porcelain-fused-to- metal crown. Objectively: interdental papilla between the 21 and 22 tooth is hypertrophied, markedly hyperemic, overlaps the crown of the 22 by 1/3 of its height, bleeds when touched. Periodontal pocket between the 21 and 22 tooth is 4 mm deep. Artificial crown is placed on the gingival margin. X-ray reveals resorption of the interalveolar septa between the 21 and 22 tooth by 1/3 of their height. Specify a priority action in the treatment of this patient:
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A 55-year-old patient requires a denture. Objectively: Kennedy’s I class dentition defect; the 16, 17, 18, 26, 27, and 28 leeth are missing. The patient presents with fixed occlusion. The 15 and 25 teeth have low crowns with poor anatomic contours, intact. Clasp-retained (bugel) removable partial denture is being made for the patient. What fixation system would be optimal in this case?
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To clarify the diagnosis, the orthodontist performed Eschler-Bittner clinical diagnostic test. As the result the facial signs became more marked. What jaw abnormality is the most likely in this case?
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A 21-year-old man 3 hours ago received a knife wound to the right cheek; the wound was initially bleeding, but by the time of examination the bleeding has already stopped. Objectively in the area of the right cheek there was a wound 4x1 cm with even margins that does not penetrate into the oral cavity and is filled with clotted blood. What sutures should be applied to the wound in this case?
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A 38-year-old man came to the dentist. After history-taking and examination he was found to have exacerbated generalized periodontitis of the II-degree with periodontal pockets 3-5 mm deep. After the local factors were removed and anti- inflammatory treatment was provided to the patient, it is necessary to remove the periodontal pockets. What method should be applied in this case?
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A 28-year-old woman complains of dull pain when biting on tooth 16. Upon examination she was diagnosed with exacerbation of chronic periodontitis. She is prescribed extaction of tooth 16. What forceps should be used for tooth extraction in this case?
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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 absent. In this case the load would be the most traumatizing for the following anatomical structure:
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A 2-year-old child received a dental trauma. Objectively the crowns of 51 and 61 are shorter than the crowns of adjacent teeth by 1/3. Mucosa in the area of 51 and 61 is hyperemic and swollen. X- ray shows no periodontal fissure in the apical area of the roots of 51 and 61. What treatment tactics would be optimal in this case?
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A 45-year-old man complains of pain and crepitation in the temporomandibular joint during the movements. of the lower jaw. Objectively: the face is symmetrical, the mouth opens with slight displacement to the left. Dentition is intact. On occlusiography there were detected centric and eccentric supracontacts. What treatment methods should be applied in the first place?
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During preventive examination, a 20-year-old man was found to have enamel defects that look like irregularly shaped coarse white spots in the vestibular precervical area of teeth 11 and 12. The spots stain with 2% methylene blue solution. Make the diagnosis:
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A patient complains of carious cavity in tooth 11. The filling was lost one week ago. The tooth crown is dark, there is residual filling 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, 0.4x0.3 cm in size. The root canal is filled by 2/3 of its length. What is the most likely diagnosis?
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The medical station of a regiment received a patient with signs of bilateral mandibular fracture. What is the main task of first aid in this case?
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In the epicenter of a natural disaster, a man with a lacerated wound of soft facial tissues was found. The wound cuts open the patient’s lower lip and chin; external bleeding is observed. The patient is conscious. What first aid should be provided for this man?
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A 67-year-old woman complains of an ulcer on her oral mucosa and pain when eating. She has a history of decompensated valvular heart diseases. Examination detected in the posterior portion of her left buccal region an irregularly shaped ulcer with white- gray coating. Surrounding mucosa is not inflamed. Make the provisional diagnosis:
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A 40-year-old man presents with a medial defect of the hard palate 2x3 cm in size. Dentition is intact. What type of obturator would be optimal in this case?
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A 53-year-old man complains of increased teeth sensitivity to chemical stimuli. Objectively: the gums are pale pink, roots are exposed by 1/3 of their length. Small amount of dental deposit is observed. The 15, 14, and 24 present with cuneiform defects. Probing of the exposed cervices and defects is painful. What is the most likely diagnosis?
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During preventive examination a 5-year-old child was found to have insufficient physiological attrition of cusps of the deciduous canines. What treatment tactics should a doctor choose?
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A 34-year-old man complains of acute spasmodic pain in the region of his upper jaw on the left that is aggravating when affected by cold stimuli. Toothache irradiates to the ear and temple. He had acute toothache in the 27 tooth one year ago, but he did not consult a dentist. Pain recurred three days ago. Objectively: the 27 tooth has a carious cavity communicating with the dental cavity. Probing of the opened carious cavity is extremely painful. X-ray picture shows widening of periodontal fissure at the root apex of the 27 tooth. What is the most likely diagnosis?
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Parents of a 5-year-old girl brought her to the pediatric dentist for oral cavity sanation. After clinical examination she was diagnosed with chronic deep caries in 54. What filling material would be optimal for the treatment of tooth 54 in this case?
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A 57-year-old man presents with habitual mandibular dislocation. To reduce mouth opening, Yadrova apparatus was made. How long should the treatment last in this case?
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What medical establishment provides dental and prosthodontic (making of splints, appliances, and dentures) treatment for those who received maxillofacial injuries on the battlefield?
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A patient needs endodontic treatment of tooth 21. The canal is being processed with manually operated endodontic instruments. Name one such instrument made by means of conical spiral threading (turning) of a steel wire with round cross-section (milling):
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A patient is prescribed mandibular vestibuloplasty. What pathology is likely to occur if the vestibule of the mouth is too shallow?
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A 27-year-old woman complains of recurrent loss of a tooth filling in the lower right jaw. Objectively: in the 46 tooth on the masticatory approximal surface there is a defect of hard tooth tissues affecting 1/3 of the tooth crown, no tooth discoloration; positive, quickly abating reaction to cold stimulus is observed. What denture construction would be optimal in this case?
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A new dental polyclinic is being opened in the city There are to be 38 doctors in the dental surgery department. How many department heads should supervise this number of personnel according to the normatives?
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A 6-year-old child complains of pain and edema in the upper right jaw, body temperature up to 37.9°C, and deterioration of general well-being. Symptom onset was 3 days ago. Objectively the face is asymmetric due to soft tissue edema of buccal and infraorbital regions on the right. The crown of 54 is destroyed by 1/2, percussion is painful; the tooth previously had been treated for complicated caries. On the palatine side of the affected tooth area there is a painful infiltration with fluctuation in its center; the tissues over the infiltration are hyperemic. Make the provisional diagnosis:
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After extraction of tooth 27 the dental surgeon suspected that the maxillary sinus was perforated. To clarify this provisional diagnosis the doctor desided to conduct an oronasal communication test (Valsalva maneuver). What manipulations are necessary for this test?
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A 38-year-old man needs to have his 12 tooth extracted. What type of anesthesia should be used in this case?
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A 45-year-old patient after administration of local anaesthesia in preparation for oral surgery has suddenly felt unwell, developed increasing edema of laryngeal mucosa and respiration disorder. The dentist stopped the manipulations in the oral cavity. What type of asphyxia developed in the patient?
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