Description : For an amalgam restoration of a weakened cusp you should, A. reduce cusp by 2mm on a flat base for more resistance B. reduce cusp by 2mm following the outline of the cusp C. reduce 2mm for retention form
Last Answer : A. reduce cusp by 2mm on a flat base for more resistance
Description : How much space do you need to cap a weakened cusp with amalgam: A. 1mm B. 1.5mm C. 2mm D. 2.5mm
Last Answer : C. 2mm
Description : In preparing a very small proximal amalgam cavity on a molar tooth what would consider, A. Extend the cavity to the gingival margin B. Extend the cavity beyond the contacts areas C. Achieve at least 2mm in dentine D. Extend cavity just beyond dento enamel junction
Last Answer : D. Extend cavity just beyond dento enamel junction
Description : When restoring weakened cusps with dental amalgam you should consider: A. 2mm reduction while forming a flattened surface B. 2mm reduction while following the original contour of the cusps C ... forming a flattened surface D. 4mm reduction while following the original contour of the surface
Last Answer : A. 2mm reduction while forming a flattened surface
Description : Four wires of the same material and dimensions as under are stretched by a load of same magnitude separately. Which of them will be elongated maximum? (a) wire of 3m length and 1.5 mm diameter (b) ... and 2mm diameter (c) wire of 2m length and 2mm diameter (d) wire of 1m length and 1mm diameter
Last Answer : Ans:(a)
Description : The gap between probing face and probing shoe should be. (i) 0.4 mm (ii) 0.2mm * (iii) 3mm (iv) 1mm.
Last Answer : (ii) 0.2mm *
Description : What is the property of high copper amalgam A. Reduced physical creep B. Higher retention
Last Answer : A. Reduced physical creep
Description : Retention for occlusal amalgam cavities in premolars is BEST provided by A. Slightly undercutting of walls with inversed cone bur B. Mesial and distal undercuts C. Buccal and lingual undercuts
Last Answer : C. Buccal and lingual undercuts
Description : Pin Restoration with which material has the best retention: A. Amalgam B. Gold inlay C. Composite D. Glass Ionomer
Last Answer : C. Composite
Description : The retention pin in an amalgam restoration should be placed, A. Parallel to the outer wall B. Parallel to the long axis of tooth
Last Answer : A. Parallel to the outer wall
Description : `1kg` piece of copper is drawn into a wire `1mm` thick and another piece into a wire `2mm` thick. Compare the resistance of these wires.
Last Answer : `1kg` piece of copper is drawn into a wire `1mm` thick and another piece into a wire `2mm` thick. Compare the resistance of these wires.
Description : An 8 years-old child who has sustained a fracture of maxillary permanent central incisor in which 2mm of the pulp is exposed presents for treatment three hours after injury. Which of the ... - Pulpotomy using formocresol. d- Pulpectomy and immediate root filling. e- Pulpectomy and apexification.
Last Answer : a- Remove the surface 1. 2 mm of pulp tissue and place calcium hydroxide
Description : 8 years old child who has sustained a fracture of maxillary permanent central incisor in which 2mm of the pulp is exposed; presents for treatment three hours after injury. Which of the ... C. Pulpotomy using formocresol D. Pulpectomy and immediate root filling E. Pulpectomy and apexification
Last Answer : A. Remove the surface 1-2 mm of pulp tissue and place calcium hydroxide (Cvek pulpotomy, apexogenesis)
Description : Characteristic of mucogingival involvement: a. A pocket of more than 4 mm depth. b. Only 1mm of attached gingiva remains. c. Pocket extends to the mucogingival junction.
Last Answer : c. Pocket extends to the mucogingival junction.
Description : Characteristic of mucogingival involvement: A. A pocket of more than 4 mm depth B. Only 1mm of attached gingiva remains C. Pocket extends to the mucogingival junction
Last Answer : C. Pocket extends to the mucogingival junction
Description : The minimal labial tooth reduction for satisfactory aesthetics with porcelain fused to metal crown is, A. 1mm B. The full thickness of enamel C. 1.5 mm D. 2.5mm E. One third of the dentine thickness
Last Answer : C. 1.5 mm
Description : .For an onlay preparation, which of the following is the MOST EFFECTIVE means for verifying adequate occlusal clearance A. Wax bite chew in B. Proper depth cuts C. Visual inspection D. Articulating paper
Last Answer : A. Wax bite chew in
Description : Splinting the adjacent teeth in fixed bridge is primarily done to: A. Distribute the occlusal load B. Achieve better retention
Last Answer : A. Distribute the occlusal load
Description : The cervical finish line of a full veneer crown preparation should be placed: A. Just supragingival whenever is possible B. According to the depth of gingival crevice C. Subgingival to reduce ability of recurrent caries D. At the junction of tooth and amalgam core
Last Answer : A. Just supragingival whenever is possible
Description : High copper amalgam lasts longer than low copper amalgam because of:** A. Increased compressive strength B. Increased corrosion resistance C. High creep D. Increased tensile strength E. Decreased setting expansion
Last Answer : A. Increased compressive strength
Description : If used, in which direction should pinholes be placed? a. parallel to the long axis of the tooth b.parallel to the nearest external surface c. at a 15 degree angle to the long axis of the tooth d. perpendicular to the gingival floor e. directly below and parallel to restored cusp tip
Last Answer : b.parallel to the nearest external surface
Description : In complete dentures, cheek biting is most likely a result of: A. Reduced Overjet of posterior teeth B. Increased vertical dimension C. Teeth have large cusp inclines
Last Answer : A. Reduced Overjet of posterior teeth
Description : The bur should be tilted lingually when preparing the occlusal surface of class II cavity on a mandibular first premolar in order to: I. Remove unsupported enamel II. Prevent encroachment on the buccal pulp horn III. Prevent ... and II B. I and III C. II and IV D. III and IV E. IV only
Last Answer : C. II and IV
Description : The palatal pulp horn of maxillary molars is located: A. In the pulpchamber under mesiolingual cusp B. In the pulpchamber opposite the mesio distal fissure of the buccal cusp C. Under the disto lingual cusp
Last Answer : A. In the pulpchamber under mesiolingual cusp
Description : The position of the lingual cusp of a maxillary first premolar during setting of teeth and on occlusal view is positioned:** A. Distally B. Mesially
Last Answer : B. Mesially
Description : A cusp fracture immediate to Class II inlay can be BEST detected by, A. History B. Visually C. Radiograph D. Percussion E. Touching the tip of the cusp / Pressure on the cusp/
Last Answer : E. Touching the tip of the cusp / Pressure on the cusp/
Description : In a vital pulp therapy, what is the optimum depth for a pin hole in a tooth: A. 4-5mm B. Approximately 2mm C. Less than 2mm D. 1-1.5mm
Last Answer : A. 4-5mm
Description : During mouth preparation for RPD on tooth adjacent to edentulous area. There is dentine exposure: A. Restoration is required B. Proceed with rest seat preparation and fabrication if involved area is not more than 2mm
Last Answer : A. Restoration is required
Description : After obturation and on X-ray you notice the obturation materials are 1mm beyond apex. What is your first management? A. Refill the canal B. Pull the GP cone about 1mm out and take a new X-ray C. Leave it as it
Last Answer : B. Pull the GP cone about 1mm out and take a new X-ray
Description : In cavity preparation 1mm below DEJ what is seen: A. More dentinal tubules, some intertubular and peritubular B. Some dentinal tubules, more intertubular and less peritubular C. More ... , some intertubular and dentinal tubular D. Equal amount of dentinal tubules, intertubular and peritubular
Last Answer : B. Some dentinal tubules, more intertubular and less peritubular
Description : On an X ray you find the cement of the previous root canal treatment is extending 1mm beyond the apex without any symptoms; what would you do: A. Remove restoration material and retreat B. Apiectomy C. Leave as is until any complications occur
Last Answer : C. Leave as is until any complications occur
Description : On an X ray you find the Gutta Percha cone extending 1mm beyond the apex without any symptoms, what would you do: A. Remove restoration material until you are able to withdraw the Gutta Percha cone B. Apiectomy C. Leave as is until any complications occur
Description : What is the minimal labial reduction for porcelain metal crowns: A. 1mm B. 1.5mm C. 0.5mm
Last Answer : B. 1.5mm
Description : The width of the normal periodontal ligament space is: A. 0.25 to 0.5mm B. 1mm
Last Answer : A. 0.25 to 0.5mm
Description : The major cause of jacket crown breakage is, A. Inclusion of platinum foil B. Use of weak cementum C. Voids of porcelain D. Porcelain is thinner than 1mm
Last Answer : D. Porcelain is thinner than 1mm
Description : A patient on the dental chair has cardiac arrest. What is INCORRECT, A. Observing the vital signs and check that the air way is clear is at high importance B. Expired air has 15% O2 only, ... D. Intermittent positive pressure is better than mouth to mouth when it has been given at the same rate.
Last Answer : C. Intermittent positive pressure at the rate of 40/min will reduce the chances of cerebral hypoxia
Description : The initial condylar guidance of 25 degrees was wrong and is changed to 45 degrees. What changes will you make to achieve balanced occlusion: A. Decrease incisal guidance B. Reduce cusps height C. Increase compensation curve
Last Answer : C. Increase compensation curve
Description : What is correct in regard to high copper amalgam, A. Reacts and strengthens the amalgam by its dispersion properties B. Reacts to form copper-tin phase thereby eliminating the tin-mercury ... thereby eliminating the silver mercury phase D. Reacts and strengthens the amalgam by its grain diffusion
Last Answer : B. Reacts to form copper-tin phase thereby eliminating the tin-mercury phase
Description : High content copper amalgam . . . a. generally requires greater energy to accomplish trituration b. should be placed rapidly in large increments c. Continues to leak since the ... not cause galvanism in oral environment e. is equally effective as conventional alloys in clinical studies
Last Answer : a. generally requires greater energy to accomplish trituration
Description : Oral mucosal pigmentation; what is TRUE: a. Commonly depends on ethnicity. b. Commonly an amalgam tattoo. c. Commonly oral melanoma. d. Commonly melanotic naevus.
Last Answer : a. Commonly depends on ethnicity.
Description : Amalgam restoration, when do you have to replace it? a. Ditching of the edges. b. The probe penetrates the area between the margin and tooth tissue. c. Fissure of the surface of the amalgam. d. When there is chronic inflammation of the pulp.
Last Answer : c. Fissure of the surface of the amalgam.
Description : Burnishing the amalgam after carving, what is the benefit? a.Completing the condensation at the marginal edges. b.eleminating excessive mercury
Last Answer : .Completing the condensation at the marginal edges.
Description : Which one of this restorative methods will be LEAST compromised by a core, A. Amalgam B. Composite C. GIC D. Cast gold
Last Answer : D. Cast gold
Description : After the placement of a class I amalgam the patient comes back to you complaining of pain on masticating and biting; what is the first thing you would look at, A. Occlusal height B. Contacts areas
Last Answer : A. Occlusal height
Description : The principal reasons for placing a gingival interproximal wedge in conjunction with a matrix for amalgam condensation are to: 1. separate the teeth slightly 2. keep the band tight at the gingival margin 3. contribute to the ... b. 1,2,4 c. 2,3,4 d. 1,3,4 e. all of the above
Last Answer : e. all of the above
Description : Occasional sensitivity in a shallow class I amalgam restoration after two days would be managed by: A. Replace old filing immediately B. Oxide Zinc and eugenol C. Using thicker mix of cements D. Tell patient the discomfort will disappear after 4 t o6 weeks E. Ledermix
Last Answer : D. Tell patient the discomfort will disappear after 4 t o6 weeks
Description : In a posterior vital molar with a core the best material to restore is: A. Amalgam B. Composite resin C. GIC
Last Answer : A. Amalgam
Description : What is TRUE about Oral mucosal pigmentation;: A. Commonly seen in ethnic groups B. Commonly an amalgam tattoo C. Commonly oral melanoma D. Commonly melanotic naevus
Last Answer : A. Commonly seen in ethnic groups
Description : A vital tooth has a crown cemented to a pin-retained amalgam core; where does a failure occur: A. Between crown and cement B. Between core and cement C. In the crown and the root D. In the core and the margin preparation
Last Answer : B. Between core and cement
Description : In regard to marginal leakage in amalgam: A. The wider the gap the better the chance of secondary caries B. Seal the margin with fissure sealant would prevent further breakdown C. Secondary caries may develop
Last Answer : A. The wider the gap the better the chance of secondary caries