Prosthodontic treatment utilizing current adhesion techniques

A new prosthetic restoration attracting many dentists is the adhesion-fixed partial denture. The adhesion-fixed partial denture requires minimal teeth preparation and is easier to construct and manipulate than are conventional fixed partial dentures. To attach an adhesion-fixed partial denture to abutment teeth, resin material must be bonded to the teeth and metal framework. The tooth surfaces require etching with acid and the retainers are surface treated to enhance the adhesive bonding with resin. In addition to the conventional oxidation surface treatment, metal primer new bonding system applied organic compounds with a mercapto group was introduced recently. Structure design of metal framework was improved and the framework possesses several times larger strength against distortion compared with it's early design. Indication and contraindication cases of adhesion-fixed prostheses are clearly defined. These improvements have brought this prostheses remarkable elongation of life period in oral cavity and fairly acceptable prognoses. This article describes a current method for adhesion retaining of dental alloys and presents examples of clinical application of adhesion-fixed partial denture