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KROK 2 Dentistry 2011 Questions | KROKEXAM
Browse 2011 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
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A 27-year-old patient complains of bleeding, pain and swelling of gums, tooth mobility, halitosis, general weakness. Objectively: submandibular lymph nodes are enlarged and painful, gums are hyperemic and cyanotic, they are also swollen and bleed at probing, periodontal pockets are 5-8 mm deep and contain sero-purulent exudate. There is massive dental deposit, gingival recession and tooth migration. X-ray picture shows diffuse osteoporosis and irregular, predominantly vertical, resorption of alveolar septa down to 2/3 of root length. What is the most likely diagnosis?
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A 37-year-old patient complains of gingival hemorrhage, pain, halitosis, body temperature rise up to 37,6°C. Objectively: the gums are markedly hyperemic, swollen, bleed on touch, periodontal pockets are 3 mm deep, contain sero-purulent exudate. Orthopantomogram shows diffuse osteoporosis of alveolar processes, resorption of the interdental septa down to 1/3 of their height. What is the most likely diagnosis?
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A 21-year-old patient complains of a drop-shaped bulge in the cervical region. Objectively: there is an enamel droplet of about 2 mm in diameter on the vestibular surface of the 33 tooth. What is the most likely diagnosis?
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A 49-year-old male patient complains about gingival hemorrhage, teeth mobility in the frontal region of his lower jaw, hypersensitivity of dental cervixes. X-ray picture shows widening of periodontal fissure in the region of the 42, 41, 31, 32 teeth, as well as resorption of alveolar process tissue to 1/3 of root length. The 42, 32 teeth present with I degree mobility, the 41, 31 teeth present with II-degree of teeth mobility. What temporary splint should be used for frontal stabilization of dentition?
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A 7-year-old child presents with deterioration of general health status, body temperature rise up to 38,0°C. Objectively: buccal mucosa is covered with white maculae of a pinhead size, protruding above the level of the mucosa. There are pink maculae on the palate. What is the most likely diagnosis?
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A 32-year-old patient needs to be provided with metal-ceramic crowns for the 12, 11, 21 and 22 teeth. During the dental visit he is given infiltration anaesthesia with Ultracain DS anaesthetic. What elements enter into its composition?
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A 25-year-old got a polytrauma as a result of a road accident. On examination, he was diagnosed with dislocation asphyxia. What kind of first aid should be rendered?
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A 7-year-old child has been diagnosed with a complete dislocation of the 11 tooth caused by a trauma that occurred 24 hours ago. The tooth has been taken along with the patient to the dentist's. Objectively: the alveolar socket edges are slightly hyperemic, the socket bone walls are intact, the socket itself is filled with a blood clot. What is the optimal way of treatment?
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A 20-year-old patient got an injury. Objectively: the patient's chin and lower jaw up to the 34 and 45 teeth are missing. The 45, 46, 47, 48, 34, 35, 36, 37 teeth are stable. At what stage of medical evacuation the patient will get special medical aid?
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A 25-year-old patient complains about a light brown spot in the upper foretooth. Objectively: the 23 tooth has a single light brown spot in the cervical region. Probing shows smooth surface. The tooth is nonresponsive to cold and probing. What is the most likely diagnosis?
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A 33-year-old patient complains about an ulcer of oral cavity floor, that is located under his tongue on a level between the 43 to the 33 tooth. Examination reveales that ulcer edges are undermined and scalloped. Its grey-yellow floor is shallow and it is covered with small, easily bleeding granulations. There is no ulcer infiltration. Make a clinical diagnosis:
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A 60-year-old patient presented to a clinic for checking her complete removable denture. During the teeth placement on the wax bases a gap between the front teeth and cuspal interference of the lateral teeth was revealed. What mistake was made?
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A 45-year-old female patient consulted a prosthodontist about dental prosthetics. She works as TV announcer. Objectively: the lower jaw dentition is without spaces, the upper jaw has a free-end edentulous space and a boundary edentulous space in the lateral parts. The remaining 18, 17, 13, 12, 11, 21, 22, 23, 24 teeth are stable. What fixing elements should be used in a clasp denture for cosmetic purposes?
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A 53-year-old patient with generalized periodontitis presented to a prosthodontics clinic for fabrication of fixed splints for his both jaws intended to stabilize the dentitions along the entire dental arch. Which of the upper jaw buttresses will be functionally significant for the distribution of masticatory pressure?
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A 38-year-old patient complains of discomfort, occasional sensation of tearing in the 17 tooth, infrequent pain during eating hot food that lasts for 10-20 minutes. Objectively: the 17 tooth is filled with composite materials, the tooth is slightly darker than the other ones. What is the most likely diagnosis?
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On the 7th day after the operation on the abdominal cavity a 30-year-old patient presented with pain and sweling in the region of parotid gland; body temperature rise up to 39°C; limited mouth opening, dryness. Gland massaging results in discharge of purulent exudate from its duct. The patient can be diagnosed with:
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A 50-year-old patient complains of a traumatic break-off in the front teeth. Objectively: the crowns of the 12,21 teeth are broken off by 3/4, X-ray picture shows that the channels of the 11, 21 teeth are properly filled, the other teeth are intact. What actions should the dentist take?
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A 16-year-old girl consulted a dentist about a cosmetic defect on her front teeth, namely some dark spots and dentin defects. The spots were detected immediately after teeth eruption, the defects developed with the lapse of time. The patient was diagnosed with erosive form of dental fluorosis of the 16,11,12,22,26, 31,32,36,41,42,46 teeth. Select a method of treatment:
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During extration of the 26 tooth a 34-year-old patient developed tinnitus, skin pallor, weakness. She was diagnosed with vertigo. What is the most appropriate tactics of emergency care?
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A 30-year-old male patient consulted a dentist about a swelling in the region of his upper lip. Objectively: the face is asymmetric because of upper lip edema, nasolabial fold is smoothed. Mucogingival fold of the upper jaw vestibular surface in the region of the 11, 12, 21 teeth is smoothed, hyperemic. Palpation is painful. Fluctuation is present. The patient was diagnosed with acute purulent periostitis of the upper jaw satrting from the 21 tooth. Choose the treatment tactics:
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A 37-year-old patient was admitted to the oral surgery department. The woman complains of pain in her cheek that is made worse by touch. It is known from the anamnesis that five days ago the patient fell down from the stairs and "hurt"her cheek. Objectively: in the depth of cheek examination revealed a circumscribed infiltration, cheek skin is hyperaemic and doesn't make a fold, fluctuation symptom is present. Mucous membrane is edematic and has teeth indentations. What is the most likely diagnosis?
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A 42-year-old builder complains about a condyloma on his lower lip. It appeared 1,5 month ago. It has been significantly growing throughout the last week. Objectively: the red border of the lower lip is cyanotic and infiltrated, it has some isolated closly adhering squamae. There is a well-defined hemispherical formation 8 mm in diameter and 4 mm high in the centre. The formation is of grey-and-blue-and-red colour, it has rough surface formed by thin, closely adhering and thick-based squamae. Regional lymph nodes are enlarged, mobile, dense and painless. What is the most likely diagnosis?
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A 12-year-old child presents with missing 31 and 41 teeth, the gap between the 32 and 42 teeth is 10 mm. Choose the most rational denture construction:
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A 6,5-year-old child has a gap 2,53 mm large between frontal teeth from canine to canine. Relationship of the first permanent molars complies with Angle's class I. Specify the severity degree of bite deformation:
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An 8-year-old child complains of a painless round formation under the tongue on the left which was noticed by accident about a month ago. Objectively: there is a roundish formation up to 2,0 cm in diameter in the sublingual region deep in the soft tissues of mouth floor. It is soft, painless to palpation, the mucous membrane over it is of grayish-blue color. What is the most likely diagnosis?
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X-ray examination of the 46 tooth in a 7-year-old child reveals the following: the root walls are parallel, their thickness gradually decreases, they have pointed ends. The root canal converges towards the tooth cavity, and diverges at the developing apical hole. Periodontal gap is of the same width along the enti- re length of the root. At the root apex it merges with the growth zone. Specify the stage of root development:
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A 5-year-old child complains about spontaneous pain in an upper jaw tooth on the right that is getting worse at night and during eating cold food. Objectively: the 65 tooth has a deep cavity communicating with the tooth cavity. Probing is painful, percussion is painless. Cold water causes long-standing pain. What is your provisional diagnosis?
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Parents of a 6-year-old child complain about pain in the child's submandibular region on the left, body temperature rise up to 37,5°C. Objectively: the child's face is asymmetric due to the infiltration of the submandibular region on the left. The infiltration is soft and elastic, mobile, 2x2,5 cm large; its palpation is slightly painful, the skin is unchanged. The teeth are intact. Pharynx is hyperaemic. What is the most likely diagnosis?
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A dentist performing gum anesthetization before the closed curettage had mistakenly used the 10% solution of silver nitrate instead of 10% lidocaine solution. The gums immediately became white, swollen, painful. Which of these medications is to be used for emergency care?
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A patient complains about paroxysmal upper jaw toothache on the left that is getting worse at night. Toothache intensifies also under stimulation and irradiates to the left eye and temple. Similar attacks were noted three months ago, the patient didn't undergo any treatment. Objectively: the 25 tooth has a deep carious cavity communicating with the tooth cavity. Probing causes acute pain at the point of communication, vertical percussion is slightly painful, horizontal one is painless. Mucous membrane in the projection of root apex of the 25 tooth is unchanged, its palpation is painless. Thermal probe causes acute pain, the pain attack is long-lasting. Electroodontodiagnosis is 60 microampere. X-ray picture shows slight widening of periodontal fissure at the root apex of the 25 tooth. What is the most probable diagnosis?
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A 48-year-old woman complains about aching dull pain in the region of the left TJM, that is getting worse during eating solid food. The pain appeared about 2,5 years ago. Objectively: mouth opening is limited, there is sideward deviation of jaw during mouth opening, TMJ is clicking. Examination of the oral cavity revealed secondary partial adentia. X-ray picture shows sclerosis of the cortical plate of articulat head and narrowing of cartilage space. What is the most likely diagnosis?
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A patient with hemophilia consulted a dental surgeon about decay of a right lower tooth. Objectively: the crown of the 46 tooth is completely decayed below the gum level. Percussion causes minor pain reaction. It is planned to extract the 46 tooth. The extraction procedure should be performed in:
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A 22-year-old patient undergoes treatment for acute deep caries of the 26th tooth. The pulp-capping material of choice is Ca(OH)2/salicylate cement "Life", the constant filling material is ligh-cure condensable composite "Solitaire-2". The pulp cap should be covered with:
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A group of specialists conducts an epidemiological survey of certain age groups of population aimed at evaluation of periodontal disease prevalence and treatment needs. These rates are studied by means of the following index:
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A 27-year-old victim was delivered to to the facial surgery department with a cut wound of right cheek. The trauma is civilian, the patient got it in a fight. The deadline for early surgical d-bridement without preliminary antibiotic injection is no more than:
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A 28-year-old patient has been admitted to the oral and maxillofacial surgery for a carbuncle of face. Objectively: the patient is in a critical condition, face, mucous membranes of lips and conjunctiva are edematous and cyanotic. Body temperature is 40°C. The patient presents with delirium, hallucinations. The carbuncle is located on the upper lip, the surrounding soft tissues are swollen. Palpebral fissures are closed due to the edema of eyelids. What is the most likely complication of carbuncle?
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A 37-year-old patient has been diagnosed with abscessed furuncle of the upper lip. After dissection of the inflammation focus the exudate has been sent for bacteriological analysis. Which causative agent for furuncle is most likely to be found?
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A 54-year-old patient complains of a tumor-like formation in the region of his lower lip which appeared 1-1,5 months ago. Objectively: there is a round tumourlike formation up to 1cm in diameter on the red border of the lower lip on the right. Roll-like edges of the formation protrude above the level of the red border. In the centre of the formation a brown crust is visible. After its removal a crateriform hole can be seen. There is no bleeding or pain. Regional lymph nodes are not enlarged. What is the most likely diagnosis?
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A 26-year-old patient presented at a clinic for prosthetics. Objectively: the crown of the 16 tooth is destroyed by 1/3. It is planned to restore its anatomical shape with a metal inlay. What is the first stage of cavity preparation?
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A 52-year-old female patient complains of severe paroxysmal pain in the region of the 34 tooth. Throughout the year the 35,36,37 teeth were sequentially extracted because of pain complaints. Percussion of the 34 tooth causes acute paroxysmal pain. The same pain arises when talking and washing the projection area of the mental foramen. Clinical and roentgenologic examination revealed no signs of bone tissue destruction. What is the most likely diagnosis?
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