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Download OHIO EFDA BOARD EXAM QUESTIONS WITH VERIFIED SOLUTIONS GRADED A+ and more Exams Dentistry in PDF only on Docsity!
At the occlusal and incisal surface - Correct Answer In which area on the tooth is the enamel thickest Which tissue provides the defense and developmental functions of a tooth - Correct Answer Pulp Rounded borders of enamel which form the mesial and distal of the occlusal surface on posterior teeth, or mesial and distal of the lingual surface on interior teeth are named........ - Correct Answer Marginal ridges Name the surface at the base of a class| cavity preparation - Correct Answer Pulpal floor Which tooth has the longest root in the mouth? - Correct Answer Maxillary cuspid/canine If present, the cusp of Carabelli is located on, which molar - Correct Answer ML cusp area of the maxillary, first molar The fossa found in the central portion of a molar is named the fossa? - Correct Answer Central Where is the cavosurface margin located? - Correct Answer At the junction of the cavity wall and the unprepared tooth structure If the pulp receives an excessive stimulus, which type of dentin is formed in response - Correct Answer Reparative dentin What is the correct classification of caries for a carious lesion that is located on the proximal surface of tooth #8 - Correct Answer Class III In which direction does the oblique bridge travel across the occlusal surface of a maxillary molar? - Correct Answer Distobuccal to Mesiolingual DB/ML What can cause pulpitis? - Correct Answer Deep cavities into the dentin High occlusion Effects of cutting burs Desiccation Condensation pressure What attaches to the bone on one end and two cementum on the other end and allows for slight movement of a tooth? - Correct Answer Periodontal ligament Enamel is the second hardest tissue in the body. - Correct Answer False How many cusps does a mandibular 1st molar have - Correct Answer 5 Which position should the patient chair be adjusted in order to work on the mandibular arch? - Correct Answer Back of chair raised 25 to 45° from the floor Which type of instrument is used to rub and smooth amalgam material - Correct Answer Burnisher What is used as the point of balance, support or rest when grasping and activating an instrument? - Correct Answer fulcrum How is the sheet of rubber dam material stabilized after placement of the clamp in the mouth? - Correct Answer Ligating the tooth furthest away from the clamp Which instrument can be used to invert the rubber dam material into the sulcus to ensure a seal around the gingiva - Correct Answer Instrument with flat blunt working end When isolating teeth using rubber dam, the general guideline is to isolate to the tooth being restored - Correct Answer 2 tooth mesial 1 teeth distal Why are bases and liners placed in cavity preparations - Correct Answer protect the pulp Exothermic describes the setting reaction that occurs in what cement when use as a base? - Correct Answer Zinc phosphate What provides natural thermal protection to the pulp? - Correct Answer enamel and dentin Why is a pulpal stimulator used under a restoration? - Correct Answer To initiate the formation of reparative dentin Which hemostatic agent should be used with caution because it can cause an elevation in blood pressure and tachycardia in some patients? - Correct Answer Racemic epinephrine What metals are found in Dental alloy? - Correct Answer Silver Copper Tin Zinc Creep and corrosion can be prevented in an amalgam if metals is found in the alloy in a high amount? - Correct Answer Cooper Which of the following phase contributes to corrosion and creep and occurs during trituration of amalgam? - Correct Answer Gamma 2 What amounts of mercury added to alloy, would cause the amalgam to be considered "mercury. rich" - Correct Answer >54% Name the type of amalgam that includes both spherical and lathe cut alloys - Correct Answer admixed What effect occurs to an Amalga that has been exposed to moisture during placement? - Correct Answer Excessive expansion Which two metals combine in react during the gamma 2 phase? - Correct Answer tin and mercury What is the function of a matrix band? - Correct Answer act as a temporary wall in restoring the contour and contact areas Intercuspal position, maximum intercuspation, and centric occlusion are II terms for how teeth fit together in occlusion? - Correct Answer True What cusps are considered to be working cusps? - Correct Answer Linguals of maxillary molars Buccals of mandibular molars Green stones are used to finish a amalgam by removing - Correct Answer Bulky or excess amalgam What type of rotary instrument is used to remove a submarginal area <.02mm? (Amalgam) - Correct Answer White stone Term used for the process in which composite is hardened? - Correct Answer Polymerization If acid etchant has been used in, the tooth becomes contaminated with moisture what should be done? - Correct Answer Re-etch for 10-20 seconds. What is found in composite so that polymerization will occur? - Correct Answer Camphor quinone Photochemical initiators The placement of glass ionomer on dentin before composite is referred to as the technique - Correct Answer Sandwich What procedure is a minimally invasive option to treat small interproximal lesions or post orthodontic white spots lesions? - Correct Answer Resin infiltration Coronal polishing involves removing type of stains - Correct Answer Suparagingival extrinsic dimensional changes of Amalgam - Correct Answer Mercury alloy ratio (high amount of mercury) Trituration time ( longer mixing=less expansion, more contraction) Condensation increasing pressure during placement ( less expansion) Contamination moisture ( increase expansion, especially in alloy that has zinc) Temperature change( causes amalgam to change shape, allowing fluid to travel back and forth inin and out between amalgam and tooth= percolation. Attrition - Correct Answer Gradual loss of tooth structure or tissue caused by tooth on tooth contact. Abrasion - Correct Answer In the gingival third, enamel worn away by friction from something other than tooth on tooth contact, aggressive brushing Erosion - Correct Answer Chemical loss of materialized tooth structure caused by exposure to acid, bulimia, phosphoric citric acid, Gerd, meth mouth Abfraction - Correct Answer loss of tooth surface in the cervical area,(gum line) due to stress and pressure applied to tooth through biting clenching, chewing and grinding 
