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KROK 2 Dentistry 2021 Questions | KROKEXAM
Browse 2021 KROK 2 Dentistry exam questions with answers and explanations.
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A 62-year-old woman complains of intense pain attacks in the area of her left lower jaw that last 1-3 minutes. The pain occurs during talking, washing her face, and touching the skin. Mandibular X-ray shows no destruction of bone tissue. Make the provisional diagnosis:
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A porcelain-fused-to-metal crown for tooth 11 is being made for the patient. The tooth will be left vital. What measures should be taken during the treatment to prevent pulpitis in this tooth?
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A 44-year-old man complains of a constant dull pain in the area of his tooth 37 that was extracted two days ago. The pain intensifies during eating. Objectively, the socket of the extracted tooth has a gray coating. Mucosa around the socket is hyperemic, edematous, and painful when palpated. What is the most likely diagnosis in this case?
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A non-removable porcelain-fused-to metal dental bridge is being made for a 35 year-old woman. Two-layer impressions were obtained using the «Silaflex» > silicone material. The impression were sent for disinfection. What antiseptic should be used to process the impressions?
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On the 7 day after an abdominal surgery, a 69-year-old man has developed pain and swelling in the area of his left parotid gland. His body temperature is 39°C, his mouth is dry. Massage of the salivary gland produces purulent exudate from the excretory duct. Make the provisional diagnosis:
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A 37-year-old woman complains of a tumor on her lower lip on the surface that faces the oral cavity. The tumor appeared approximately 2 weeks ago, gradually enlarges, and makes lip movement problematic. Objectively, within the lower lip there is a circumscribed round elastic painless induration fused to the mucosa. The mucosa over the induration is transparent, while around the induratuion it remains unchanged. The regional lymph nodes are not enlarged. What is the most likely diagnosis in this case?
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The parents of a 7-year-old child complain that their child for the last 2 days had body temperature of 38.8°C and sore throat. Objectively, catarrhal stomatitis is observed on the gums, cheeks, lips, and on the floor of the oral cavity. The submandibular lymph nodes are enlarged and painful. Bright-red catarrhal inflammation is present on the soft palate, tonsils, and palatine arches. The tongue is edematous, red, and dry. The skin of the face is hyperemic, except for the white nasolabial triangle. Make the provisional diagnosis:
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The parents of a 14-year-old girl brought her to a dentist, complaining that she has some kind of growth on her tongue. It appeared approximately 1.5 years ago and has been slowly growing since then. Objectively, on the lateral surface of her tongue there is a neoplasm on the left. It is pink, mobile, painless, hard, and spherical. It has clear margins, wide base, and smooth surface. Make the provisional diagnosis:
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A man with hemophilia came to a dental clinic to have his tooth 36 extracted. His previous tooth extraction resulted in a prolonged bleeding. What tactics should the doctor choose?
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An 8-year-old boy complains of an acute pain in his lower left jaw, general weakness, high body temperature of 38.6°C, and problems with opening the mouth and swallowing. Objectively, the face is asymmetrical because of edema in the submandibular region and in the lower third of the left cheek. Mucosa in the area of teeth 73, 74, and 75 is edematous on the both sides of the alveolar process. The Pulsief teeth are mobile, percussion is positive, the Vincent's sign is positive. What is the most likely diagnosis in this case?
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A 15-year-old girl complains of a carious cavity in her tooth and spontaneous pain that quickly passes. The child is somatically healthy. Objectively, in tooth 36 there is a carious cavity within the parapulpar dentin, the response to a cold stimulus is painful, the pain abates in 1 2 miuntes. Probing of the cavity floor is painful in one spot. Percussion is painless. Make the provisional diagnosis:
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A 71-year-old man came to a dental orthopedist to have a denture made for him. During examination, the dentist noticed that the mucosa that covers the palate and the alveolar processes was worn thin and barcly pliant. What Supple class is it?
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During preventive examination, a 20-year-old man presents with enamel defects that look like rough white spots with uneven margins 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 47-year-old woman complains of an itching sensation in her gums and increased teeth sensitivity to thermal stimuli. Objectively, the roots of most of her teeth are exposed to 1/3 of their length, the gums are pale pink, no periodontal pockets. X-ray shows osteosclerosis of the alveolar process and disturbed intactness of the lamina dura on the apices of the interdental septa. The patient was diagnosed with initial periodontosis. What should be prescribed in this case for local treatment of the systemic dental hyperesthesia?
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A 42-year-old man complains of periodic pain in his tooth 48. Examination shows that tooth 48 is partially erupted with its medial cusps, its mucosa is pale pink and painless on palpation, the mouth opening is fully unrestricted. X-ray shows tooth 48 to be located medially to tooth 47. Choose the surgical treatment:
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A man came to a dental therapy clinic with complaints of isolated transversal furrows on the crowns of his front and lateral teeth. The furrows were detected immediately after the teeth eruption. In his childhood, in the age of under a year, he had frequent acute respiratory viral infections. Objectively, the crowns of teeth 16, 11, 21, and 26 have a single indentation (a band) in their middle within the enamel. The furrows do not stain with methylene blue. What is the most likely diagnosis in this case?
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A 40-year-old man came to a dental surgeon for extraction of tooth 16. The crown of tooth 16 is retained. What forceps should be used to extract tooth 16 in this case?
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A 40-year-old man has a fresh mental mandibular fracture without visible displacement of the fragments. What dental orthopedic appliance is recommended in this case?
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A 48-year-old woman complains of itching gums and increased teeth sensitivity to thermal and chemical stimuli. Objectively, the dental cervices are exposed. The gums are firm and pale. There is a small amount of supragingival dental plaque. In the area of teeth 13, 14, 24, and 25 there are cuneiform defects, probing of which is painful. The woman was provisionally diagnosed with periodontosis. What X-ray presentation is characteristic of this disease?
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A 36-year-old woman needs a denture. Objectively, there is a carious cavity on the mesial and masticatory surfaces of tooth 46, the interdental contact is disturbed. A dental inlay is to be made for this woman. According to Black's classification of dental caries, this cavity is class:
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After the complex examination of a 44 year-old man, the dentist made a diagnosis of generalized periodontitis, II degree, exacerbated progression. Lately the patient has been noticing a deterioration of his general condition, thirst, dry mouth, and itching skin. What additional examination needs to be performed first in this case?
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A 37-year-old man complains of an unpleasant sensation in his gums on the lower left jaw that developed after he underwent treatment for dental caries. several months ago. Examination reveals permanent fillings on the contact surfaces of teeth 36 and 37. The edges of the fillings are hanging over the interdental papilla. The gum in the area of teeth 36 and 37 is hyperemic and edematous. The periodontal pocket is up to 3 mm deep. What treatment will be etiological in this case?
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A 40-year-old man came to a dental clinic with complaints of bleeding, edematous, and hyperemic gums and missing lateral teeth on his lower jaw. A complex treatment is planned for this man, along with making removable dentures. What method of functional diagnostics. is used to assess the condition of the periodontal vessels?
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A 20-year-old pregnant woman with the term of 22 weeks complains of thermal sensitivity of her upper front teeth. The sensitivity developed one month ago. She was diagnosed with acute initial caries of teeth 12, 11, 21, 22, Black class 'V. The Fedorov-Volodkina' hygiene index is 1,8; What treatment tactics would be optimal in this case?
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Removable complete dentures are being made for the both jaws of a 68 year-old woman. Objectively, the alveolar processes are slightly atrophied, the mucosa is moderately pliant. Anatomical impressions are obtained. What is the next stage of denture-making in this case?
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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 a round cross section (milling):
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The parents of a 5-year-old child explain that lately their child has started chewing only on one side and refusing hard foods. Objectively, tooth 74 has a carious cavity and there are dental. deposits on teeth 73, 74, and 75. Probing of the cavity floor in tooth 74 is painful and provokes a slight bleeding in the area where the cavity communicates with the pulp chamber. Make the diagnosis:
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A 2-year-old girl has a bright red neoplasm 1x1.5 cm in size on her upper lip. The neoplasm does not protrude above the mucosa and becomes paler, when pressed. The regional lymph nodes have no pathology. The results of blood and urine analysis are normal for her age. Make the provisional diagnosis:
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A 47-year-old man complains of pain and swelling in his left submandibular region and pain during eating. Objectively, the mouth opening is unrestricted, mucosa of the left sublingual fold is hyperemic, the excretory duct of the submandibular salivary gland produces a small amount of turbid saliva. X-ray of the mouth floor shows an oval shadow 1 cm in size. Make the diagnosis:
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A 65-year-old man was diagnosed with a bilateral uncomplicated mandibular fracture in the mental region. The patient uses removable complete dentures. Choose the long-term splint for this patient:
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How to separate teeth for orthodontic crowns?
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An 8-year-old girl complains of dry lips and a painful burning sensation in them. She has a history of food allergies. Objectively, there is a slight edema and hyperemia of the skin of her lips. The vermillion border is infiltrated and has fissures, scabs, and scales. The surface of the lips is dry. In the angles of the mouth there are infiltrations, maceration, and fissures. What is the most likely diagnosis in this case?
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During dental procedures, a 29 year-old man after receiving anesthesia suddenly developed a dense non-itching skin edema in the area of his face and neck. The edema was accompanied by cough and wheezing. What is the most likely diagnosis in this case?
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A removable complete denture is being made for the lower jaw of a 50 year-old man. During the fitting of an individual impression tray, the border in the area of the mylohyoid line needs to be determined. What Herbst test should be performed for this purpose?
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A 30-year-old man complains of a carious cavity in a lower left tooth. Objectively, tooth 34 has a deep carious cavity that at one point communicates with the pulp chamber. Probing of the cavity floor is painless, while percussion of the tooth is slightly painful. Thermal stimuli provoke no response. On the gums, there is a fistula in the projection of the root apex of tooth 34. Make the provisional diagnosis:
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A 33-year-old man undergoes treatment of tooth 15 for acute median caries. What type of anesthesia will be the most advisable in this case?
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A porcelain-fused-to-metal dental bridge is being made for a 31-year-old woman. Vital teeth 33, 36, and 37 will function as the abutment teeth. The teeth preparation is planned to be done under anesthesia. What type of anesthesia will be the most effective in this case?
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A 42-year-old man came to a dental surgeon for oral sanation. After application of anesthesia, the patient suddenly developed nausea, weakness, constricting sensation behind the sternum, and cardiac pain. The patient's skin is pale and covered in cold clammy sweat. The patient started vomiting, lost his consciousness, and developed seizures. The patient's pupils are unresponsive to the light. The pulse is thready, blood pressure cannot be measured. Make the diagnosis:
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Parents of a 5-year-old child came to the dentist for sanation of the child's oral cavity. Objectively, on the masticatory surfaces of teeth 54, 64, 74, 75, and 85 there are carious cavities within the softened mantle dentin. The child is anxious and misbehaves. What treatment tactics would be optimal in this case?
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For 2 days a man has been suffering from spontaneous nocturnal pain attacks in his tooth 25. The pain irradiates along the branches of the trigeminal nerve and alternates with brief painless intervals. Objectively, on the medial surface of tooth 25 there is a deep carious cavity within the parapulpar dentin. Probing of the cavity floor and percussion are painful. Thermal stimulation of tooth 25 provokes a pain attack. What is the most likely diagnosis?
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