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