Vet Dentistry
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| show | operations to restore dental tissues as necessitated by resorption, caries, traumatic injury, impaired fxn, or esthetic preference
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| show | A tooth, crown, or portion of an implant used to support, stabilize, or anchor a fixed or removable dental prosthesis such as a bridge
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| show | a dental prosthesis that replaces the crown of one or more missing teeth
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| What is a CORE? | show 🗑
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| What is a CAP/CROWN? | show 🗑
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| show | A restorative that extends beyond the preparation outline
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| What is an INLAY? | show 🗑
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| show | a restoration made to fit over a tooth to cover the incisal edge or occlusal cusp either partially or completely
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| What is an OVERHANG? | show 🗑
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| What is a PONTIC? | show 🗑
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| show | G.V. Black classification
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| show | simple: single tooth surface
compound: 2 tooth surfaces when prepared
complex: 3+ tooth surfaces when prepared
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| show | beginning in structural defects (i.e. pit, fissure, developmental groove. commonly on occlussal surface) on any tooth (I, PM, M)
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| What tooth surface is involved with a GV Black class II caries? | show 🗑
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| What tooth surface is involved with a GV Black class III caries? | show 🗑
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| What tooth surface is involved with a GV Black class IV caries? | show 🗑
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| What tooth surface is involved with a GV Black class V caries? | show 🗑
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| What tooth surface is involved with a GV Black class VI caries? | show 🗑
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| show | simple fracture of enamel
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| show | fracture extends through enamel into the dentin
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| What is a STAGE 3 tooth injury? | show 🗑
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| What is a STAGE 4 tooth injury? | show 🗑
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| show | tooth is displaced
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| What is a STAGE 6 tooth injury? | show 🗑
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| What is a STAGE 7 tooth injury? | show 🗑
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| What is a STAGE 8 tooth injury? | show 🗑
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| What is a STAGE 9 tooth injury? | show 🗑
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| What is a STAGE 10 tooth injury? | show 🗑
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| show | into enamel only
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| What is a STAGE 2 TR lesion? | show 🗑
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| show | into the pulp
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| What is a STAGE 4 TR lesion? | show 🗑
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| What is a STAGE 5 TR lesion? | show 🗑
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| What is Basrani's staging system used for? | show 🗑
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| What is a Basrani stage A? A1? A2a? A2b? | show 🗑
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| What is Basrani stage B? | show 🗑
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| show | crown and root fracture
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| show | 1) pain (sensible dentin)
2) pulpitis (reversible)
3) blockage of tubule by dentinal fluid or odontoblast
4) mineralization of material at exposed dentinal tubule surface and apertures
5) formation of sclerotic or tertiary dentin at the site
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| What is SENSIBLE DENTIN? | show 🗑
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| show | generally suggests a non-vital tooth
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| How far into the dentinal tubules do odontoblastic processes typically extend? | show 🗑
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| How far into dentinal tubules do nerve fibers typically extend? | show 🗑
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| show | A-delta
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| show | C-delta
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| What does the remainder of the dentinal tubule contain in addition to the odontoblastic process and nerve fibers? | show 🗑
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| show | by affecting the hemodynamics (expansion/contraction of dentinal fluid stimulates mechanoreceptor nerve fibers) temperature also stimulates fibers, and contributes to fluid contraction/expansion
surface dehydration, friction, air, sugar,
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| What is the cell layer closed to the dentinal tubules? | show 🗑
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| what layer is adjacent to the odontoblastic cell layer | show 🗑
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| Where is the cell rich zone of the pulp? What kind of cells are present? | show 🗑
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| show | Decreased pulp chamber size-->less blood vessels, fewer undifferentiated mesenchymal cells remain in the cell rich zone
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| What ideally happens when dentinal tubules are opened on the surface? | show 🗑
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| What is SCLEROTIC DENTIN? | show 🗑
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| show | an empty dentinal tubule b/c the odontoblastic process is gone
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| How is tertiary/repairative dentin formed? | show 🗑
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| How is tertiary dentin different from primary and secondary dentin? | show 🗑
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| show | Seals the pulp cavity to protect it from invasion by toxins/bacteria
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| What are negative effects of the formation of tertiary dentin? | show 🗑
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| What are the 6 rules of Restoration? | show 🗑
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| In addition to retaining strength, why should tooth structure be conserved | show 🗑
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| show | To reduce food impaction during mastication
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| What is the definition of a LINE ANGLE? | show 🗑
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| show | Where 3 walls meet
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| show | line angle where the wall of a cavity preparation meets the wall of unprepared tooth surface
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| show | preparation margin
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| show | the combined peripheral extent of all the cavosurfaces. AKA preparation outline
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| What is the RESTORATIVE MARGIN? | show 🗑
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| What factors are affected by the design of the cavosurface angle? | show 🗑
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| show | 1. type of restoration
2. restorative materials to be used
3. degree of anticipated stress demand on the restoration
4. length/direction of enamel prisms
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| What are 5 basic types of marginal finish for crowns, onlays, and inlays on any tooth surface except gingival? | show 🗑
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| show | 1. shoulder
2. chamfer
3. deep chamfer
4. feather (knife edge
5. occult (feathered restorative margin, but no cavosurface prep)
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| show | beveled
butt joints
shoulder joints
chamfers
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| When are knife edge/feather and occult finish lines used? | show 🗑
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| What is the result of using an occult finish line? | show 🗑
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| show | Outline form
Resistance form
Retention form
Convenience form
Pathology removal form
Wall form
Preparation cleansing form
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| show | involves undercuts in dentin. Used with nonbonded amalgams and self or auto-curing composites
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| show | use of bonding agents that microscopically interlock in enamel porosities, dentinal tubules, or other microscopic anatomy
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| When do chemical crystal formations occur? | show 🗑
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| What component of amalgam is cause for concern? | show 🗑
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| show | plasticity, ease with which it can be compacted to acceptable cavity and marginal adaptation before it sets
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| show | tensile strength
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| What factors affect the deterioration of the surface and margin by corrosion and tarnishing? | show 🗑
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| show | in limited amounts, it improves the marginal seal
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| What affects the dimensional stability of amalgam | show 🗑
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| show | SLOW FLOW OR CHANGE IN SHAPE OF AMALGAMS DUE TO CHRONIC PREsSURES
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| show | small to medium, must be supported by sound tooth structure
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| show | low edge tensile strength
creep/distortion under physical stress
inability to materially bond to dental structure
high thermal conductivity
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| show | improper cavity preparation
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| show | Class 1, 2, 3, & 5
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| What are adverse effects of under trituration? | show 🗑
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| show | contraction of amalgam
poor flow
difficulty in complete filling
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| What thickness of cavity liners be when used for indirect pulp cap under a restoration? | show 🗑
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| show | 0.5 - 2 mm (minimum depth necessary)
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| show | to reduce marginal leakage and sensitivity
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| show | The time from completion of mixing until the setting reaction begins
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| How do you know the working time of a glass ionomer has ended? | show 🗑
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| show | apply a moisture barrier (oil, varnish, or resin)
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| show | they have a resin incorporated within them that is set during curing which eliminates the need for separate application of a barrier
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| When is glass ionomer sensitive to the effects of moisture? | show 🗑
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| How is adhesion of glass ionomer affected if the tooth surface is dessicated? | show 🗑
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| What happens if there is moisture contamination during glass ionomer placement? | show 🗑
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| show | cloudy spots appear as a result of microcracks
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| show | flouride
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| How does the bond form between glass ionomer and tooth? | show 🗑
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| show | higher calcium content
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| What are the 4 classes of glass ionomers? | show 🗑
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| What are type I luting cement ionomers used for? | show 🗑
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| show | restorations when fluoride release is desired but esthetics and strength are not as critical (i.e. TR lesions in cats)
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| show | use in deep cavity preps (incl. feline TR) b/c they have enhanced pulp compatibility (still need appropriate CaOH liners when indicated)
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| show | contain a substantial metallic component (gold, silver, or amalgam alloy)
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| What are type IV glass ionomers used for? | show 🗑
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| What is COMPOSITE? | show 🗑
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| What activator is most commonly used in chemical cure composites? | show 🗑
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| What activator is most commonly used in UV light cure composites? | show 🗑
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| What activator is most commonly used in visible light cure composites? | show 🗑
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| show | matrix phase (resins)
dispersed phase (filler particles)
coupling phase (coating of filler particles)
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| Why shouldn't the occlussal cavosurface of class I and II restorations be beveled? | show 🗑
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| What dental tissue does composite bond most strongly to? | show 🗑
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| Should the margin of a class V restoration be beveled near the cementoenamel junction? | show 🗑
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| show | coarse diamond (but be careful to avoid trapping air bubbles in the groves created in the tooth surface (impairs bonding)
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| show | to selectively dissolve dental or restorative surfaces-->microporosities to enhance micromechanical interlock
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| What are the 2 most common acid etchants? | show 🗑
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| How is nitric acid effective? | show 🗑
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| What concentration of phosphoric acid is used to etch enamel? dentin? | show 🗑
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| What type of polishing paste should be used after cleaning the tooth, before etching? | show 🗑
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| show | 30-40 seconds for enamel
10-15 seconds for dentin
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| What is the result of prolonged etching? | show 🗑
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| show | 10-20 seconds
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| What happens if the tooth is rinsed for too long after etching? | show 🗑
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| Where is enamel bonding the weakest? why? | show 🗑
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| show | improved retention and decreased marginal leakage
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| show | Higher inorganic composition of enamel (96% compared to 70%) and interference of smear layer that forms on dentin, blocking tubules
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| What is the typical bond strength of resins to enamel? | show 🗑
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| what depth should composite increments be placed to ensure adequate light curing? | show 🗑
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| show | 5 minutes
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| What is dental CRAZING? | show 🗑
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| When are self threading and friction retained pins best utilized? | show 🗑
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| When are drilled holes and cemented posts or pins best utilized? | show 🗑
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| show | threaded, cemented, or friction-retained
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| show | cemented
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| show | self-threading
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| show | increased diameter
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| At what depth of insertion do self-threaded pins achieve optimal retention? | show 🗑
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| show | 3 mm
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| show | increase retention
DONT increase strength
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| At what depth into the restoration does a pin provide optimal retention, beyond which it just further weakens it? | show 🗑
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| show | do not place closer than 0.5 mm to DEJ
avoid injury to vital pulp tissues
avoid injury to periodontal tissues
when 2+ pins are used, place as far apart as possible (minimum 1-2 mm apart)
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| What benefits do pins provide? | show 🗑
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| show | the direction that a restoration must follow to be correctly placed on a tooth without binding
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| How far into the root canal should an endodontic dowel extend for proper retentive and resistance form? | show 🗑
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| What are 2 things that can cause discoloration of enamel in dogs? | show 🗑
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Created by:
lamarron
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