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HOTTEL EFDA COMBINED QUESTIONS WITH 100% VERIFIED SOLUTIONS In the federation dentaire international system for numbering, a permanent maxillary right first molar is: - Correct Answer 16 Which tooth numbering system does not use letters when describing primary dentition? - Correct Answer FDI Numbering System On a tooth with extensive gingival recession below the Cementoenamel junction, what would be visible? - Correct Answer anatomical and clinical crown What is the periodontium? - Correct Answer The oral hard and soft tissue that supports the teeth When looking into a healthy oral cavity when will most likely see - Correct Answer The clinical crown The term that describes a space continuous with an inter-proximal space, produced curvature's of teeth in contact in the same arch, that provides a channel or a passage through which food escapes from the occlusal surfaces of the teeth during mastication - Correct Answer Embrasures Which embrasure is located below the contact area - Correct Answer Gingival When posterior teeth are viewed from the occlusal, The proximal contacts are usually located - Correct Answer more buccal in a buccal to lingual direction When anterior teeth are viewed from the incisal , the contact area is located - Correct Answer more center in a buccal to lingual direction Where is enamel the thickest? - Correct Answer incisal/occlusal surface True or false: pulp increases in size with age - Correct Answer False What dental tissue is comprised of tubules that contain protoplasmic extensions of the cells that line the pulp chamber - Correct Answer dentin Enamel covers the anatomical crown of the tooth. The composition of an enamel is approximately - Correct Answer 95.5% inorganic, 0.5% organic, 4% water Dentin is normally yellowish white and darker than an enamel. The composition of dentin is approximately - Correct Answer 70% inorganic, 20% organic, 10% water What tooth tissue most resembles bone - Correct Answer cementum Pulp can be harmed by the Carie's process and by - Correct Answer Sterilizing, cleaning, drying, desensitizing agent Where is the oblique ridge located on a maxillary molar? - Correct Answer DB and ML cusps Which incisor has the most acute mesioincisal angle (sharp) - Correct Answer Maxillary central The tissue that fills the interproximal space between adjacent teeth - Correct Answer Interproximal papilla Collectively, the gingiva, alveolar process, periodontal ligament and cementum are known as: - Correct Answer periodontium How many EFDAs can one Dentist oversee at a time? - Correct Answer 2 irremediable tasks and procedures include - Correct Answer Injection of local anesthetics Direct supervision includes - Correct Answer Dentist is physically present in the office and the procedures are ordered by the dentist The science that studies the relationship of people to their working environment in order to promote efficiency and reduce stress and strain - Correct Answer Ergonomics correct body position for an EFDA - Correct Answer Forearms parallel, feet flat on floor What is the operating zone for the right handed operator relative to the patient's face - Correct Answer 8-12 o'clock zone Ideally, the distance from operator face to the patient face should be - Correct Answer 12-14 inches When restoring a maxillary tooth best visual access can be obtained with the patient reclined in a supine position. The plane of the maxillary arch is - Correct Answer Perpendicular to the floor When restoring a mandibular tooth, Best visual access can be obtained with the patient reclined with the back of the chair angled slightly up(30-40 degrees). The plane of the mandibular arch is - Correct Answer Parallel to the floor What instruments are used to place amalgams, composite resin's and temporary filling materials into cavity preparation's - Correct Answer Compactors What instruments are used to remove excess amalgam, composite resin's and temporary materials after the material has been placed in the cavity preparation - Correct Answer Carvers What instruments are used to rub and smooth amalgam after it has been placed in the cavity preparation - Correct Answer Burnisher Most hand instruments are made up of what three parts - Correct Answer Handle, shank, working end The working end of a carver (discoid/cleoid) has a cutting edge divided into three general areas. They are: - Correct Answer the tip, side and heel What instruments are designed to finish and polish amalgam and composite restorations - Correct Answer rotary Disadvantage of cotton roll isolation - Correct Answer Must be changed frequently, risk of contamination when changing, limited retraction, does not protect patient How many advantages to using rubber dam - Correct Answer 6 Dryness ensured during all steps of the cavity preparation and restorative procedure when you use this type of isolation - Correct Answer Rubber dam The most common listed disadvantage of using the rubber dam - Correct Answer Time in placing All rubber dam clamps have this in common - Correct Answer Jaw, forcep holes, points, bow What should be attached to the clamp prior to placement to minimize accidental aspiration - Correct Answer Floss When applying a rubber dam for a complete isolation of teeth, the EFDA will need to the dam - Correct Answer Invert When removing the rubber dam, the septum portion of the dam is - Correct Answer Cut If you were restoring tooth 20 which teeth should be isolated with the rubber dam - Correct Answer 19-22 What part is key to stabilization of the rubber dam - Correct Answer Rubber dam clamp Where is the jaw of the clamp placed when it is properly placed on the tooth - Correct Answer At the CEJ The jaw of a gingival retractor should be - Correct Answer Parallel with the occlusal plane Upon removing a gingival retractor, the EFDA must avoid touching the tooth, and the with the jaws of a retractor - Correct Answer Finished restoration Which will best retract the gingival tissue when restoring a class V restoration - Correct Answer Gingival retractor Can you re-contour over carved restorations and is this an advantage or a disadvantage of a polished amalgam over unpolished ones - Correct Answer No, Disadvantage What must you avoid when finishing proximal areas of amalgam restorations - Correct Answer Damaging the contact area What is an open margin - Correct Answer space between the restoration and the tooth How many increments of amalgam should be placed in all cavity preparations, even the smallest? - Correct Answer At least two increments. Doughnut shaped marks on the occlusal surface of the restoration indicate - Correct Answer Heavy centric occlusion When restoring excursive contacts the marks left by articulating paper on the restoration should be - Correct Answer Out of occlusion What is the primary goal of an EFDA and restoring occlusion - Correct Answer Maintain favorable occlusal relationship and do nothing to alter it what is creep - Correct Answer Slow movement of material under compressive forces overtime What is the composition of amalgam - Correct Answer Mercury, silver, tin, copper, zinc The shapes of alloy particles are - Correct Answer Lathe and spherical What statement best describes a sealer - Correct Answer Seals off openings of the cut dentinal tubules to prevent sensitivity Which of the following materials is considered to have sedative qualities Gluma, zinc oxide eugenol, zinc phosphate, calcium hydroxide - Correct Answer Zinc oxide eugenol If you are restoring tooth 20 which teeth should be isolated with the rubber dam - Correct Answer 19-22 This is the free gingiva that is between adjacent teeth - Correct Answer Interproximal papilla The grasp that offers the greatest control - Correct Answer Modified pen grasp This is the extension of the pulp chamber that projects incisally or occlusally - Correct Answer Pulp horns Most sealant material is made up of a plastic resin known as - Correct Answer BIS- GMA And EFDA may need to place a retraction cord so that the resultant restorative material can be placed without contamination from the - Correct Answer Sulcular fluid Blood The external tissue layer covering the anatomical root of a tooth, 50% mineralized is the: - Correct Answer Cementum This is the system adopted by the ADA that provides an easier method for identifying a specific tooth, involves a number assigning 1-32 - Correct Answer Universal numbering system What material exhibits good obtundent qualities - Correct Answer Zinc oxide eugenol What is the strength of amalgam once placed - Correct Answer 6% after 20 minutes And EFDA may need to place retraction cord so that the resultant restorative material can be placed without contamination from the - Correct Answer Sulcular fluid Blood When taking a final crown impression you must have your cord placed so that you can view the entire finish line, as well as mm of unexposed axial wall apical to the finish line - Correct Answer 0.5-1.0mm There are many techniques that can achieve retraction. these include - Correct Answer Retraction cord Electrosurgery Chemical Reagant True or false. Gingival retraction cord is not the most effective, What is the most commonly used method of attraction for most clinicians - Correct Answer False A precaution to consider when placing retraction cord with racemic epinephrine is that it may cause - Correct Answer Elevation in blood pressure and tachycardia Retraction cord can expand when wet therefore - Correct Answer Opens the sulcus to a greater size than the original cord size Common astringent hemostatic agents used with retraction cord include - Correct Answer Ferric sulfate Aluminum sulfate Studies have shown that hemostatic agent effects can last up to after cord has been removed - Correct Answer 20 mins Generally speaking what is the first step in cord placement - Correct Answer Evaluate the area where the prep is located and gingival tissue In the early New conservative preparation's were developed that include what became known as tunnel and slot cavity designs - Correct Answer 1990s The preparation was designed to avoid the removal of the marginal ridge and the issues surrounding the proper replacement of the marginal ridge - Correct Answer Tunnel The preparation when restored frequently result in fracture of the unsupported - Correct Answer Tunnel, marginal ridge The preparation was developed to minimize the amount of natural tooth reduction needed to restore a carious lesion - Correct Answer Slot If composite material is chosen for a slot preparation there is little need for retentive areas or undercuts, which conserves - Correct Answer Natural tooth structure the preparation is not usually taught in academic settings in a seldom used in private practice today - Correct Answer Tunnel Always make sure to each layer to assure no voids are present - Correct Answer Condense 
