Vet Dentistry
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| show | Conservation of tooth structure
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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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| What are 5 factors that should be taken into account when planning restoration treatment? | show 🗑
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| What is a contraindication for crown placement? | show 🗑
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| What is another name for the cavosurface angle? | show 🗑
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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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| With what type of material and what type of restorations are knife-edge and occult finish lines more typically used? | show 🗑
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| show | less tooth structure removed=stronger tooth
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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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| show | seven:
1. Gold
2. Platinum (6 kinds)
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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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| What attributes does gold have as a dental restorative material? What is the drawback? | show 🗑
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| What metals comprise the semi-precious group? | show 🗑
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| Why isn't silver a noble metal? | show 🗑
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| show | Base metals:
nickel-based alloys
chrome-based alloys
technic metals (copper added for color)
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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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| What fusion class of alloy must be used with porcelain fused to metal restorations? | show 🗑
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| What are the 4 types of normal fusing alloys? | show 🗑
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| What are 7 groups of high-fusing metals? | show 🗑
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| What is a potential disadvantage of the hardness of porcelain? | show 🗑
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| What is an esthetic disadvantage of porcelain? | show 🗑
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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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| What depth of reduction should be used for composite restorations over incisal, cusp, and occlusal surfaces? | show 🗑
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| With indirect composite restorations, where can shoulders and chamfer margin design be used? What depth should this be? | show 🗑
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| show | glass ceramic that incorporates zirconium oxide to enhance color and strength
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| What type of fabrication requirements do cast glass ceramics have? | show 🗑
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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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| What is a GRIFFITH FLAW? | show 🗑
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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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| What is the purpose of Porcelain fused to Glass restorations? | show 🗑
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| What material is well suited for restorations of posterior teeth in humans, but not dogs? | show 🗑
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| Which has better esthetic qualities: PFM OR PFG? | show 🗑
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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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| What is the downside of polymer glass? | show 🗑
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| show | the actual fusing of porcelain powders into a single solid structure
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| What are 3 different fusion types of porcelain? | show 🗑
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| show | less tress on the metals used in PFM restorations during fusing of the porcelain to the unit
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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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| show | slow deformation of porcelain from repeated heating
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| What is DEVITRIFICATION? | show 🗑
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| What axial reduction is generally required for PFM? | show 🗑
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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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| What is a PARTIAL INLAY CROWN? | show 🗑
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| What are partial crowns used for most commonly | show 🗑
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| What class of preparation is an inlay for cage biter syndrome? | show 🗑
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| What class of preparation is an onlay? | show 🗑
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| What margin design should be used for inlays and onlays? | show 🗑
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| What is an ABUTMENT? | show 🗑
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| show | any abutment other than the terminal abutments
aka INTERMEDIATE ABUTMENTS
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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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| What is a bridge SPAN? | show 🗑
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| show | one-piece bridge with pontic(s) attached to the span between retainers at both ends
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| What is a FIXED-MOVABLE bridge? | show 🗑
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| What is a CANTILEVER bridge? | show 🗑
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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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| show | Owners committment to maintaining oral hygiene
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| What factors affect the retentive qualities of a bridge? | show 🗑
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| What is the minimal acceptable clinical crown height for teeth to be used as abutments? | show 🗑
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| What are contraindications for using a tooth as an abutment? | show 🗑
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| What should the root surface area of abutment teeth be relative to that of teeth to be replaced by a bridge? | show 🗑
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| What characteristic must be equal among teeth reduced to be used as abutments? | show 🗑
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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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| show | 1. plain end-cutting (56, 57, 58)
2. plain round end (556, 557, 558)
3. crosscut end-cutting (1156, 1157, 1158)
4. crosscut round end (1556, 1557, 1558)
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| show | 4 mm
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| How long is the operative surface of a long straight fissure bur? | show 🗑
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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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| show | if surface is too rough, can result in drag and microscopic tearing of alginate impression materials
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| How does acceptable taper change with height of tooth to receive crown? | show 🗑
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| Which direction does the high speed air turbine turn the bur? | show 🗑
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| Which direction should the bur be worked around a tooth for restoration prep? why? | show 🗑
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| show | 0.5 mm
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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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| What is BIOLOGIC WIDTH? | show 🗑
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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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| What is CROWN LENGTHENING? | show 🗑
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| What are the 3 types of crown lengthening? | show 🗑
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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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| What is a CORE? | show 🗑
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| show | 0.5-1.0 mm
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| What impressions/models are required by the laboratory to fabricate a crown? | show 🗑
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| show | FUNCTIONAL ANKYLOSIS: process involves the metal oxides on the surface of an implant bonding to bone
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| What are the 3 major parts of an implant? | show 🗑
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| show | titaneum
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| What are the 2 stages for implantation? | show 🗑
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| show | 3-5 months
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Created by:
lamarron
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