BONDING
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Cementing priti®multidisc ZrO2 and priti®multibloc ZrO2 all-ceramic restorations

// Statements on Sand blasting Bonding ® priti multidisc ZrO2 and priti®multibloc ZrO2 Regardless of the cementing method used, gentle, extra-oral sandblasting of the cementing surface (internal surface in the case of crowns and bridges) is recommended for priti®multidisc ZrO2 restorations. We recommend aluminum oxide with a grain size < 50 μm at a pressure of 1 bar. This allows efficient roughening, provides a larger cementing surface and thus more micromechanical interlocking without adversely affecting material strength. Clean the inside of the zirconium oxide restoration with alcohol...

// Statements on Selecting the Cement Due to the strength of priti®multidisc ZrO2 an adhesive bond is not essential in normal indications for crowns and bridges – these can be cemented using conventional products. In principle, all conventional cements (phosphate and glass ionomer cements) are suitable for bonding priti®multidisc ZrO2. Conventional cementing can be recommended if the following conditions are met: Sufficient preparation height (4 mm) and 3o to 5o preparation angle. For esthetic reasons or where preparations have poor retention (e.g. low preparation height, highly conical...

// Instructions for cementing Crowns and Bridges: Basic principles pritidenta’ * PIONEERING DENTISTRY ^Recommendations are manufacturer-specific **Blasting the adhesive surface at 1 bar with 50 pm AI2O3 followed by blowout increases adhesive bond Note: When adhesive or self-adhesive cements are used for bonding to enamel, 37% phosphoric acid must be etched onto the enamel for one minute.