Ch12 Prosthodontics
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| Noble Metals | Gold(Au) Palladium(Pd) and Platinum(Pt).
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| Base Metals | Chromium cobalt or chromium nickel, which may be used alone or with noble metals.
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| Porcelain | Hard, translucent ceramic ware : shells, veneer covers
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| PFM | Porcelain fused to metal
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| Composite | resin material used for tooth colored replacement.
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| acrylic | synthetic resin material used in fabrication of appliance parts
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| ceramic | a hard brittle material produced from non metallic substances fired at high temperatures.
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| Titanium | Corrosion resistant, lightweight, strong bio-compatible metal used in dental implants and posts.
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| Hardness | Ability of a material to withstand penetration
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| tensile strength | capability of a material to be stretched
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| elasticity | ability of a material to be stretched and then resume its original shape.
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| ductility | ability of a material to be drawn or hammered out as into a fine wire without breaking
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| Elongation | Ability of a material to stretch before permanent deformation begins
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| full crown | cast metal, tooth shaped cover that replaced the entire crown area.
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| Jacket Crown | thin, preformed, metal shield used to cover a large area of anterior crowns, can be gold metal or metal covered with porcelain material to resemble tooth enamel.
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| dowel crown | dull crown cover with dowel pin extending into the root canal of the pulpless tooth, usually positioned on anterior teeth.
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| fixed bridge | cemented into the oral cavity and not removed by the patients. number of teeth involved determines the number of units.
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| Maryland Bridge | replaced anterior or posterior tooth and is cemented directly to the adjacent or abutting teeth
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| cantilever bridge | bridge with unsupported end, usually saddled
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| pontic | artificial tooth part of the bridge that replaces the missing tooth and restores function to the bite
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| abutment | natural tooth or teeth that are prepared to hold or support the retaining part of the bridgework in position
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| adjacent | nearby or adjoining
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| complete denture | removable appliance composed of artificial teeth set in an acrylic base
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| partial denture | removable appliance composed of framework, artificial teeth and acrylic material, replaced one or more teeth in an arch.
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| immediate denture | denture prosthesis that is placed into the mouth at the time the natural teeth are surgically removed.
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| overdenture | prosthetic denture that is prepared to fit and be secured upon implant posts or prepared retained roots.
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| framework | metal skeleton or spine onto which a removable prosthesis is constructed
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| saddle | the part of the removable prosthesis that strides or straddles the gingival crest
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| rests | small extensions of removable prosthesis made to fit or sit atop the adjoining teeth.
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| clasp | extension of partial framework that grasps the adjoining teeth to provide support and retention of the prosthesis.
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| retained | in fixed prosthesis, the part of the appliance that joins with abutting natural tooth to support the alliance.
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| connector | device used to unite or attach two or more parts together
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| stress breaker | a connector applied in stress bearing areas to provide a safe area for breakage
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| artificial teeth | anatomical substitutes for natural teeth made of porcelain or acrylic material in various shades and shapes, called molds.
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| denture base | acrylic part of the denture prosthesis that substitutes for the gingival tissue
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| flange (flanj) | projecting rim or lower edge of prosthesis
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| post dam | posterior edge of the maxillary denture; helps to maintain the denture and suction.
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| Elastomeric | having properties similar to rubber
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| hydrocolloid | hydro=water colloid= suspension of material
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| reversible hydrocolloid | impression material that can change from a solid or gel state to a liquid form and back again depending upon temperature changes.
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| thermoplastic | thermo=heat plastic=movable
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| irreversible hydrocolloid | quality that once chemically set or in gel for, cannot be reversed or used again.
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| Extruder Gun | twin cartridge calibrated mixing dispenser
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| catalyst | substance that speeds up a chemical reaction
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| rubber bases | silicone, polyether, polysulfide, and polyvinylsiloxane.
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| compound | non elastic impression material that may be used in edentulous impressions.
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| Edentulous | without teeth
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| alveolectomy | surgical removal of alveolar crests, may be required to provide smooth alveolar ridge for denture setting
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| alveoplasty | surgical reshaping of contouring of alveolar bone.
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| extraction | surgical removal of teeth
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| coping | coverings
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| reduction | reducing or lessening in size
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| chamfer | preparation for crown placement
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| shoulder | preparation to provide junction of the crown and tooth.
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| bevel | tooth preparation for seating and holding a crown.
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| core buildup | use of synthetic material to enlarge tooth core area to provide support for an artificial crown and to protect the pulpal tissues.
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| post placement | addition of a metal retention post to teeth that have had pulp removal and root canal enlargement, to aid in stability and strength
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| undercut | removal of tooth structure near the gingival edge to provide a seat or placement for the extending edge of the appliance
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| retraction cord | chemically treated cord placed in the gingival sulcus to obtain chemical or physical shrinking of the gingiva.
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| impregnated | saturated
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| bite registration | impression of the teeth while in occlusion.
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| work order | written directions from the dentist to the laboratory completing the case, the impressions, bite registration and order are sent together.
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| temporary or provisional coverage | temporary protection for the prepared tooth while laboratory work is being completed.
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| seating | placement and fitting of appliance for try-in and final cementation.
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| condylar inclination | pertaining to the condyle
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| centric | occuring when the condyle rest in the temporal bone during biting, resting, and mouth movements.
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| protrusion | projecting or thrust forward
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| retrusion | forcing backward
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| lateral excursion | measurement with side to side movement of the mandible.
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| implant | insertion of object
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| osseointegration | bone bonding.
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