HomeKROK Question Archive
KROK Question Archive
KROK 2 Dentistry 2010 Questions | KROKEXAM
Browse 2010 KROK 2 Dentistry exam questions with answers and explanations.
Exam questions
200 Questions81828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120
A 37-year-old female patient complains about pain, gingival hemorrhage, halitosis, body temperature rise up to 37,2°C. Objectively: gums are apparently hyperaemic, edematic, bleed easily, parodontal pouches are 34 mm deep and contain purulent exudate. Orthopantomogram shows diffuse osteoporosis of alveolar process, resorption of interdental septa down to 1/3 of their height. What is the most likely diagnosis?
View question and answer
A 24-year-old woman complains about severe pain in the mouth, body temperature up to 38°C, indisposition. The same condition occurs periodically for several years after catching a cold. Objectively: the lips are covered with bloody crusts, there are opened bladders and erosions, covered with fibrinogenous deposit on mucous membrane of lips and cheeks that is apparently hyperemic and edematic. Hypersalivation is present. What is the most likely diagnosis?
View question and answer
A 30-year-old patient complains about a carious cavity. Objectively: the 16 tooth is discoloured and has a deep carious cavity communicating with the dental cavity. Probing, percussion cause no pain. Electroodontodiagnosis is 100 microampere. X-ray picture shows widening of periodontal fissure. What is the most likely diagnosis?
View question and answer
A 65-year-old patient complains about unsatisfactory fixation of complete removable lamellar denture of his upper jaw. The denture was fabricated 6 years ago. Objectively: balancing and poor fixation of complete removable denture is present. What is the reason of such condition?
View question and answer
A 10-year-old boy complains about missing teeth. Objectively: the face is symmetrical, disproportional because of shortening of the lower third. In the oral cavity: the 12, 14, 15, 17, 22, 24, 25, 27, 34, 35, 37, 44, 45, 47 teeth are missing. X-ray picture shows partial adentia and absence of some tooth germs. Choose the most efficient prosthetic device:
View question and answer
A child was born with body weight at a rate of 3200 g and body length at a rate of 53 cm, 9 points on Apgar score. It was the first physiological delivery. What position of child's mandible is usually observed after birth?
View question and answer
A 3-month-old child has been in disease state for two days. The child is anxious, refuses food, has normal body temperature. Objectively: mucous membrane of oral cavity is edematic and hyperemic. There is white caseous coating on the back of tongue and buccal mucosa. After the coating removal one can see extremely hyperemic surface with petechial hemorrhages. What is the most likely diagnosis?
View question and answer
A 35-year-old patient consulted a dentist about extraction of the 14 tooth because of exacerbation of chronic periodontitis following ineffective therapeutic treatment. What tools should be applied for extraction?
View question and answer
The 12, 22 teeth of an 8-year-old child are missing. There is not enough space in dentition for them. X-ray picture shows no tooth germs. The 12 tooth of the child's father is missing and the 22 tooth is conoid. What is the reason for such pathological changes?
View question and answer
A 35-year-old patient complains about constant dull pain in the 25 tooth that is getting worse when biting down on food. Objectively: masticatory surface of the 25 tooth has a carious cavity communicating with the dental cavity. The purulent discharges from the canal followed the probing. What method of diagnostics should be applied to confirm the diagnosis?
View question and answer
After complex extraction of the 37 tooth a patient experienced anaesthesia of the left half of his lower lip and chin. Electroodontodiagnos showed reduction of lower jaw teeth electroexcitability on the left. What is the most likely diagnosis?
View question and answer
A female patient consulted a dentist about dental prosthetics. Objectively: the lower third of the patient's face is shortened, nasolabial folds are deepened, frontal group of lower and upper jaw teeth is missing, the crowns of the 17, 15, 26, 27, 36, 37, 45, 47 teeth are worn off by 2/3 of their height, masticatory surfaces of these teeth are smooth and pigmented. The alveolar process isn't hypertrophied. Interalveolar height is decreased. Specify the form of pathological tooth wear in this patient:
View question and answer
A 25-year-old man consulted a dentist about extraction of the 18 tooth, it's crown is destroyed by 1/2. The tooth was treated more than once. During tooth extraction the maxillary tuber was accidentally torn off. What actions should be taken?
View question and answer
Preventive examination of a 4-year-old child revealed a deep carious cavity on the masticatory surface of the 54 tooth. The cavity has no intercommunication with the tooth cavity and is filled with dense dentine. Probing, percussion, thermal test of the 54 tooth provoke no pain. The decay/filled index is 1, hygiene index is 1,9. What filling material is the most suitable for permanent filling of the 54 tooth?
View question and answer
A 34-year-old male patient complains about acute spasmodic pain in the region of his upper jaw on the left that is getting worse as affected by cold stimuli. Toothache irradiates to the ear and temple. He had acute toothache of the 37 tooth one year ago, but he didn't consult a dentist. Pain recurred three days ago. Objectively: the 37 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 37 tooth. What is the most likely diagnosis?
View question and answer
A 69-year-old patient underwent an operation for complete removal of his lower jaw. They took impressions of both jaws and fabricated a lower jaw replacement prosthesis before operation. What elements will provide fixation of this prosthesis in the oral cavity?
View question and answer
Parents of a 7-year-old boy complain about missing of the 11 tooth. Objectively: there is enlargement of alveolar process in projection of the 11,12 teeth. X-ray picture shows multiple shades of different size. They have dentate shape and look like hard tooth tissues. What is the most likely diagnosis?
View question and answer
A 47-year-old patient complains about discolouration of the 11,12 teeth. Objectively: the 12, 12 are changed in colour, canals are filled to the top. It was decided to make metal-ceramic crowns for the 11,12 teeth. What is the optimal angle for the preparation of approximal surfaces of abutment teeth?
View question and answer
After preventive examination a 10-year-old child was diagnosed with osteoporosis circumscripta of the 13, 12, 11, 21, 22, 23 teeth. The patient was administered electrophoresis with remineralizing solutions. What preparations and in what order are to be applied in this case?
View question and answer
A 12-year-old male patient consulted an orthodontist about odontoloxia. Objectively: the face is symmetric and proportional. In the oral cavity: permanent occlusion, occlusal relationship is orthognathic in the lateral parts, the 13 tooth is located off dentition on the palate, biometric measurements show that the width of the 13 tooth is 11,4 mm, the distance between the 12 and 14 teeth is 4,6 mm, the width of the 14 tooth is 7,6 mm. Suggest the treatment plan:
View question and answer
Parents of an 8-year-old child complain about a painful formation in the child's oral cavity that obstructs food intake. The same complaints were registered two years ago. Mucous membrane of lateral tongue surface is hyperemic and edematic. There is an oval erosion over 0,7 cm large covered with yellow greyish deposit. Erosion edges are hyperemic and painful on palpation. The child has a history of chronic cholecystocholangitis. What is the most likely diagnosis?
View question and answer
A 50-year-old patient complains about a cosmetic defect of the upper frontal teeth. After meticulous examination the patient was diagnosed with wedgeshaped defect of the 11,12,13, 21, 22, 23 teeth. What material should be chosen for the tooth filling?
View question and answer
A 12-year-old child complains about bleeding and pain in the 46 tooth during eating. He has a history of acute pain some time before. Objectively: there is a deep carious cavity (Black's class II) communicating with the dental cavity, partially filled with overgrown pulp. Pulp tissue is bleeding, painful on touch. There is soft white dental deposit. What is the most likely diagnosis?
View question and answer
Examination of a 6-year-old girl revealed a deep carious cavity in the 85 tooth. Percussion and probing are painless. After removal of the softened dentine, communication with the tooth cavity showed up. Deep probing is painless. X-ray picture of the 85 tooth shows the focus of destruction of bone tissue in the region of bifurcation; cortical plate of the 35 has no pathological changes. It is most expedient to use the following material for the root filling:
View question and answer
A 33-year-old male patient complains about tongue pain that is getting worse during eating and talking. Objectively: there is a painful ulcer 0,6 cm large on the lateral surface of tongue. The floor is covered with grey deposit. The crown of the 47 tooth is destroyed. What is the most likely diagnosis?
View question and answer
A 27-year-old patient complains about pain of the 35 tooth caused by cold stimuli, that quickly abates after elimination of stimulus. Objective examination of the 35 tooth revealed a defect of hard tooth tissue within enamel. Defect edges are fragile and white. Electroodontodi-agnosis is 5 microampere. What is the most likely diagnosis?
View question and answer
A 13-year-old patient complains about gingival hemorrhage during tooth brushing. Objectively: gums around all the teeth are hyperemic and edematic, PMA index (papillary marginal alveolary index) is 46%, Greene-Vermillion hygiene index is 2,5. Provisional diagnosis: exacerbation of chronic generalized catarrhal gingivitis. This patient should be recommended to use a toothpaste with the following active component:
View question and answer
Examination of a male patient revealed that a tumour occupied the major part of his tongue; tongue mobility was limited, there were solitary regional nodes in the region of affection. After the cytological analysis the patient was diagnosed with cancer of tongue T2N1M0. What treatment should be chosen for this patient?
View question and answer
A 22-year-old patient complains about short-lasting spasmodic pain in the 26 tooth with long periods of pain absence. Objectively: the 26 tooth has a carious cavity in the masticatory surface, dental cavity is not opened. Probing causes pain in the pulp horn projection. Thermal stimuli cause sharp pain, percussion is painless. Regional lymph nodes are not palpable. What is the most likely diagnosis?
View question and answer
A 27-year-old patient complains about gingival hemorrhage during tooth brushing. Objectively: gingival edge is hyperaemic, edematic, painful on touch. Periodontal pouches are absent. X-ray picture shows resorption of cortical plate, osteoporosis of interdental septa. What is the most likely diagnosis?
View question and answer
A 25-year-old male patient got bilateral fracture of the lower jaw. A fragment in the region of the 44,43,42,41, 31, 32,33,34 teeth is displaced downward and backward. What appliance should be used for the fragment reposition?
View question and answer
A 9-year-old child complains about pain caused by sweet and sour food in an upper tooth on the left. Objectively: the 26 tooth has a carious cavity on the masticatory surface within the enamel limits. What is the optimal material to fill the 26 tooth?
View question and answer
A 57-year-old patient complains about dental hypersensitivity to chemical stimuli, gum itch. Objectively: roots are exposed down to 1/3 of their length, gums are dense and pale rose. Wedge-shaped defects in the area of the 14, 13, 24, 25, 26, 34 teeth are within the dentine. Probing of dental cervixes and wedge-shaped defects is painfull. What is the most likely diagnosis?
View question and answer
A 7-year-old child was diagnosed with chronic periodontitis of the 64, 85 teeth. The child suffers from hemophilia Specify the treatment tactics:
View question and answer
Preventive examination of a 6-year-old child revealed temporary teeth bite. Upper and lower dental arches are trapeziformed. Upper incisors overlap lower incisors more than by 2/3. Incisors and second molars are in the same relation. There is no space between frontal teeth. Upper dental arch is bigger than lower dental arch by the cheek tubercle size. Bite abnormality is observed in the following planes:
View question and answer
Preventive examination of a 9-year-old girl revealed broad bridge of nose, narrow nasal passages, half-opened mouth, problems with lip joining, elongated lower third of face. The child presents with transitional occlusion. There is vertical gap 4-5 mm large from the 53 to the 64 tooth in the frontal region. Relationship of the first permanent molars complies with Angle's class I. The child pronounces hissing sounds indistinctly. Specify the most likely factor of occlusion deformation:
View question and answer
A 40-year-old patient is hospitalized with Le Fort II maxillary fracture. The teeth are intact. Choose the most appropriate apparatus for this patient:
View question and answer
A 57-year-old patient complains about a slowly growing swelling in the sublingual region. She noted it 3 months ago. Objectively: there is an elastic swelling in the sublingual region. The swelling is painless, mucous membrane over it is with tints of blue. What is the most likely diagnosis?
View question and answer
A 38-year-old patient consulted dental surgery about extraction of the 36 tooth. What kind of anesthesia should be applied for extraction?
View question and answer
A patient ordered partial removable lamellar dentures for the upper and lower jaw. An orthodontist took elastic alginate impressions of both jaws. What is his next step?
View question and answer