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Vet Dentistry

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What is the first rule of operative dentistry?   show
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show a restoration preparation outline should be designed to allow for proper oral hygiene to prevent additional disease Hygienic conditions of the mouth must be taken into consideration and prep outline must be designed accordingly  
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What are benefits of placing the restoration outline coronal to the gingival margin?   show
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show enhanced esthetics and retention b/c greater surface area for cementation protected restorative margin  
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What is the common result of placing a cavity outline level with the gingival margin?   show
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show 1. underlying cause for needed tx 2. periodontal health 3. occlusion 4. the tooth's retentive qualities and ability to sustain a load 5. esthetics  
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What is a contraindication for crown placement?   show
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show preparation margin  
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What is the restorative margin?   show
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What are 5 things that are affected by the preparation margin design?   show
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show 1. type of restoration selected 2. restoratie materials to be used 3. degree of anticipated stres demand on the restoration 4. length and direction of enamel prisms  
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show metal onlays  
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What are benefits of using knife edge or occult finish lines?   show
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show creates an over-sized crown so can only be used where occlusal space allows and esthetics are not of concern  
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What factors must be considered in choosing the design of a preparation outline?   show
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What technique is employed in the fabrication of most dental metal restoratives?   show
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How are metals categorized in dentistry?   show
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What are the 3 different classes of metal regarding nobility?   show
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How many noble metals are there? What are the 2 groups?   show
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show 1. platinum 2. palladium 3. irridium 4. osmium 5. ruthenium 6. rhodium  
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What characteristics to noble metals have?   show
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show easily cast strong high ductility and burnishability low allergic-reaction rate Downside: cost  
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show seven nobles plus silver  
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Why isn't silver a noble metal?   show
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What are the non-precious metals?   show
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What are adverse effects often seen with base metals?   show
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What are the 2 metal classes based on fusion characteristics?   show
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show high fusing metals b/c they don't melt or creep during repeated heating required to bake on porcelain layers  
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show type I (soft) type II (medium) type III (hard) type IV (extra hard)  
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show 1. noble gold 2. white noble 3. palladium-silver alloys 4. gold-palladium alloys 5. nickel/chromium-base metal alloys 6. cobalt-base metal alloys 7. high-palladium alloys  
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show May increase the rate of attrition of occluding teeth  
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show difficult to polish to original luster after adjustments are made  
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show less hard, won't accelerate wear of occluding teeth easily re-polished  
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What depth of facial reduction can be used with feather margin prep for composite veneers?   show
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show 1-1.5 mm  
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show gingival cavosurface. at least 0.5 mm  
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show glass ceramic that incorporates zirconium oxide to enhance color and strength  
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show similar to cast metals  
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What is CERAMMING?   show
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show poor marginal adaptation rough, porous surfaces  
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show Cast glass is less prone to plaque accumulation than any other restorative and even enamel b/c it is 1. smooth 2. has low surface tension 3. generates a form of electrostatic repulsion  
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show porcelain  
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show microscopic defect created during fabrication of porcelain  
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Which has greater compressive strength: cast glass or porcelain?   show
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show cast glass  
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Which dog teeth are best suited to receive cast glass restorations?   show
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show Strength of cast glass combined with esthetic qualities of procelain  
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What material is well suited for restorations of posterior teeth in humans, but not dogs?   show
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show PFG  
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show PFM  
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show esthetics improved over regular composite resin strength improved over porcelain w/o increased abrasiveness and risk of wear to occluding teeth  
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show Requires full polymerization , special curing procedures  
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show the actual fusing of porcelain powders into a single solid structure  
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show low, medium and high-fusing  
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What is the advantage of low and medium fusing porcelain?   show
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What are advantages of an all-porcelain restoration over a PFM?   show
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show low compressive strength requires substantial remaining tooth structure increase wear to opposing tooth structures  
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show Increased compressive strength  
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How does porcelain fuse to metal?   show
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What is SLUMPING?   show
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show Crystallization that occurs from repeated firings, resulting in clouding of porcelain which gives a non-vital appearance to the restoration  
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show 1.5 mm: 0.5 mm for metal, 1 m for porcelain  
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How much redcution of incisal and occlusal surfaces is recommended for PFM?   show
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What results are seen with failure to perform sufficient reduction?   show
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show restoration that covers a cusp and only a portion of the clinical crown  
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show restoration that covers only a portion of the clinical crown, but NOT the cusp  
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What are partial crowns used for most commonly   show
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show class II  
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show Class VI  
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show beveled or chamfered  
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What is an ABUTMENT?   show
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What is a PIER? What is another name for it?   show
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What is a PONTIC?   show
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show the portion that rebuilds the prepared abutment and pier teeth  
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What is a bridge JOINT or CONNECTOR?   show
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What is a DOVETAIL?   show
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show The portion of the bridge suspended between the abutments  
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What is a FIXED-FIXED bridge?   show
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show 2 piece bridge with the pontic(s) integrally attached to the retainer only at one end  
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show a one-piece bridge with the pontic supported only from one end by a retainer  
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What is a SPRING CANTILEVER bridge? What is the advantage?   show
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What is a MARYLAND bridge?   show
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What is the difference between a MARYLAND bridge and ROCHETE bridge?   show
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What is unique about Maryland and Rochette bridges? What is the downside of these bridges?   show
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What is the most important factor to consider when planning bridge construction for an animal?   show
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show abutment tooth selection and retainer type  
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show 4 mm  
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What are contraindications for using a tooth as an abutment?   show
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show at least equal, ideally 2X  
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show must have identical line of draw to be able to seat the bridge  
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show p. 413  
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show not more than 2/3 of original crown height  
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What are the four types of straight fissure burs?   show
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How long is the operative surface of a standard straight fissure bur?   show
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show 5.5 mm  
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show 56: 0.9 mm diameter 57: 1.0 mm diameter 58: 1.2 mm diameter  
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show crosscut creates a rougher surface=better retention b/c greater surface area for luting  
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Why might the rougher surface created by cross-cut burs be detrimental?   show
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How does acceptable taper change with height of tooth to receive crown?   show
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show clockwise  
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Which direction should the bur be worked around a tooth for restoration prep? why?   show
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What is the minimum depth of dentin that should remain intact covering vital pulp?   show
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show 1. axial wall taper 5-7 degrees max 2. maximize enamel coverage 3. maximize tooth coverage 4. retentive grooves 5. pin holes, pins 6. core build up 7. metal post and core 8. cross pinning 9. adhesion system  
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What is the minimum necessary height of contour for adequate retention?   show
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show the distance physiologically maintained by the body's defense mechanisms between the restorative and the base of the sulcus  
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show 2 mm  
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What happens if you place a restoration too close to the alveolar crest such that it interrupts the biologic width?   show
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show exposure of more root structure for use as clinical crown for restorative coverage  
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show Type I: gingivoplasty Type II: gingivoplasty and bone recontouring Type III: forced eruption  
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When performing type I crown lengthening, how much attached gingiva should be maintained?   show
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show size and placement: posts are larger and are placed into the endodontic system rather than into dentin  
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show Substructure for seating a crown  
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show 0.5-1.0 mm  
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show 1. full mouth models 2. area-specific impression (VPS) 3. Bite registration impression 4. color registration/matching if using composite, glass ceramic, porcelain  
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What is OSSEOINTEGRATION?   show
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show 1. implant that integrates with the jaw bone 2. abutment 3. restoration  
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What metal is used because it has been shown to be biocompatible, & osseointegrate, long term   show
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What are the 2 stages for implantation?   show
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show 3-5 months  
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