Pediatric Dentistry and Orthodontics Set 7 EXAM QUESTIONS WITH DETAILED ANSWERS (100% CORRECT ANSWERS) / ALREADY GRADED A+

Pediatric Dentistry and Orthodontics Set 7 EXAM QUESTIONS WITH DETAILED ANSWERS (100% CORRECT ANSWERS) / ALREADY GRADED A+ A postorthodontic circumferential supracrestal fiberotomy procedure is indicated when a. There is a tendency for mandibular incisors to drift mesially b. Prevention of relapse after rotational movements is desired c. To control thumbsucking d. To maintain the buccal plate after impacted canine movement - Answer- b. Prevention of relapse after rotational movements is desired A 4-year-old child has a traumatized central incisor with a Class III (Ellis) fracture. The injury occurred about one month ago, and examination indicates that the pulp is necrotic and there is a periapical lesion. Treatment of choice is: a. watchful observation b. extraction and use of a space maintainer c. pulpectomy and root canal filling using gutta-percha points and cement d. endodontic treatment and root canal filling with a resorbable paste. - Answer- d. endodontic treatment and root canal filling with a resorbable paste. If the mesiobuccal cusp of the maxillary first molar is located distal to the mesiobuccal groove of the mandibular first molar. The malocclusion present is? a. Class I b. Class II c. Class III - Answer- c. Class III On the first dental visit, the basic fear of a child under the age of 2 is related to: a. Fear of injection b. Anxiety over being separated from a parent c. Anxiety regarding the instruments used to perform dental treatment d. Not understanding the reason for dental treatment - Answer- b. Anxiety over being separated from a parent The most common cause of sinus tracts in gingival tissues of children is: a. Pericementitis b. Periapical cyst c. Acute periapical abscess d. Chronic periapical abscess - Answer- d. Chronic periapical abscess Measured from the distal aspect of the second primary molar (mesial aspect of the first permanent molar) on one side, and around the arch to the distal aspect of the second primary molar on the other side. a. Arch perimeter b. Arch length c. Arch width d. Intercanine width - Answer- a. Arch perimeter It is a measure taken at the midline from a point midway between the central incisors to a tangent touching the distal surfaces of the second primary molars or the mesial surfaces of the first permanent molars. a. Arch perimeter b. Arch length c. Arch width d. Intercanine width - Answer- b. Arch length A patient presents a class II molar relationship. His ANB angle is 4. Which of the following is true? a. The child has Class II dental malocclusion b. The child has Skeletal Class II malocclusion c. The child has Skeletal Class I malocclusion d. The child has Dental and Skeletal class II malocclusion - Answer- a. The child has Class II dental malocclusion The crowns of primary teeth begin to calcify between: a. 1.5 to 2 months in utero b. 3.5 to 6 months in utero c. 7.5 to 9 months in utero d. 10 to 12 months in utero - Answer- b. 3.5 to 6 months in utero Frankfurt horizontal plane is formed by the union of which cephalometric landmarks? a. Porion and Nasion b. Menton and Gonion c. Sella and Nasion d. Porion and Orbitale - Answer- d. Porion and Orbitale Space differential between combine width of CDE and 345 is __ a. Positive b. Negative c. Zero d. 2.2 mm e. 2.4 mm - Answer- a. Positive In managing a 7-year-old child, the dentist should keep in mind that a child this age is a. Frequently negative b. Susceptible to praise c. Generally uncooperative d. Prone to separation anxiety e. Extremely afraid of strangers - Answer- b. Susceptible to praise The least desirable method used in child management is: a. Tell-show do technique b. Voice control c. Gift before treatment d. Hand-over-mouth technique - Answer- c. Gift before treatment A light bluish, dome-shaped lesion on the inside lip of a 2-year-old child is most likely a: a. Mucocele b. Melanoma c. Hematoma d. Hemangioma e. Sucking callous - Answer- a. Mucocele Fluoride lethal dose (mg/kg) for children a. 8 mg/kg b. 15mg/kg c. 25mg/kg d. 32mg/kg - Answer- b. 15mg/kg Severely crowded mandibular incisors usually result from: a. Mesial migration of teeth b. Premature loss of primary teeth c. Presence of supernumerary teeth d. Tooth size-arch length discrepancy - Answer- d. Tooth size-arch length discrepancy It is the most difficult orthodontic tooth movement to achieve a. Extrusion and intrusion b. Intrusion and translation c. Translation and extrusion d. Intrusion and tipping - Answer- b. Intrusion and translation Which of the following are not classic symptoms of a sucking habit? a. Anterior open bite b. Crossbite c. Expanded maxillary arch d. Proclination of the maxillary incisors e. Retroclination of the mandibular incisors f. A class II malocclusion - Answer- c. Expanded maxillary arch