Overview of Fixed Prosthodontics

• Tooth preparation - the tooth is prepared for the cast restoration to slide into place and to be able to withstand the forces of occlusion.
• Rotary instruments - used to reduce the height and contour of the tooth
• Hand-cutting and rotary instruments - used to prepare the gingival margins
• Three-quarter crown - Covers the anatomic crown of a tooth except for the facial portion
• Facial Surface - is not involved in the preparation of three-quarter crowns; this technique is not commonly used.
• Porcelain Fused to Metal (PFM) Crown - Full metal crown with outer surfaces covered with a veneer of porcelain
• Porcelain - is added for aesthetic reasons and marched to natural teeth
• Porcelain Jacket Crown - Constructed as a thin metal shell covered by layers of porcelain
• Porcelain Jacket Crown - is a very thin metal shell covered by layers of porcelain to resemble the shading and translucence of the enamel of a natural tooth
• Fixed Bridge - A prosthesis for missing teeth within the same arch
• Fixed bridge - contains a series of two or more units and is cemented permanently in place.
• Resin-bonded bridge - is also known as a Maryland bridge, with wing like extensions coming from the proximal sides
• Resin-bonded bridge - Wing like extensions of the resin-bonded bridge are binded onto the lingual surfaces if the teeth adjacent to the missing tooth
• Moisture - helps achieve a more accurate match. Use natural sunlight
• Before anesthetic is administered - Shade selection should be performed before
• Fixed Prosthodontics - the specialized area of dentisry devoted to the replacement of missing teeth with cast prostheses that are permanently CEMENTED in place.
• Inlay - Covers a portion of the occlusal and proximal surface
• Onlay - Covers proximal surfaces and most or all of the occlusal surface
• Porcelain veneers - Thin shell-like covering placed to improve the appearance of anterior teeth
• Indirect restoration - Cast restorations are also known as
• Full Crown - completely covers the anatomic crown of an individual tooth
• Full crown - are used when a tooth has decay so severe that reconstruction cannot be preformed with the use of a direct restoration.
• Shade guide - Contains samples of all available shades, and used to match the natural tooth color.
• Gingival margins - designed to provide a smooth junction of the edge of the restoration of the tooth.
• Retention aids - Provides additional support for the crown if the tooth is extensively decayed or fractured or has been endodontically mistreated (Core buildup, Pin retention, Post-and-core)
• Pins - are placed before core buildup
• Post-and-core - can only be used on teeth that have been endodotically treated
• A cast post - made from an acrylic pattern and fabricated by a dental lab technician.
• TRUE - T/F not all teeth require pin retention for a core buildup
• Gingival retraction and tissue management - Cord temporarily displaces the gingival tissue and widens the gingival sulcus so impression material can flow around all parts of the preparation.NonimpregnatedImpregnated
• TRUE - Gingival retraction cords come in a variety of sizesAvailable twisted, untwisted and braided
• Vasoconstrictor - Impregnated cords contain
• A hemostatic solution - used to control bleeding
• Elastomeric impression materials - are used to create an extremely accurate impression.
• Light-bodied material - mixed and applied around the prepared tooth
• Must be accurate to prevent the dental laboratory technicians from fabricating the restoration according to an inaccurate impression - Final impression
• Dentists usually use ______ types of material - One to three (one or two for crown and bridge impression and one for denture impressions)
• Bite registration - provides the laboratory technician with a reproduction of a patient's bite and opposing arch registration for designing the anatomic structures of the fixed prothetic
• open bite and close bite - two types of bite
• Provisional coverage - used for patient comfort from tooth preparation to final cementation of the fixed prosthetic-reduces sensitivty and discomfort-maintains function and aesthetics-protects the margins-prevents shifting