STEP BY STEP Bonding procedure DIGITAL WORKFLOW FOR BONDING ON A PLASTER MODEL Elos has performed a study on the bonding process looking at a variety of parameters and how they affect the retention strength. The findings of the study are used in this guide. This procedure describe the workflow for bonding on a plaster model with Elos Accurate ® Hybrid Base™ Non-Engaging. We have used Panavia V5 from Kuraray Noritake in this guide which is approved for Elos Accurate Hybrid Bases for both the EU and US market. Other approved bonding agents are: Multilink ® Hybrid Abutment from Ivoclar and RelyX™ from 3M. Key takeaways from study: Do not use steam to clean either restoration or Hybrid base. Do not blast the Hybrid Base. 1. Blast the internal geometry of the milled re- storation connecting to the hybrid bases with 50 µm aluminum oxide (AI2O3) and with a pressure of 2 bar. Sandblasting of the Hybrid Base is not allowed as it might reduce retention of the cementation. Gently remove residue with oil free compressed air. 2. Before bonding, clean the surface of the Hy- brid Base and the restoration thoroughly with either IsoPropyl Alchol (IPA) 99% alcohol or KA- TANA™ Cleaner. KATANA™ Cleaner: Rub surfaces on Hybrid Base and restoration for 10 sec. rinse with clean water, dry gently with oil free compressed air. Handle with gloves from this point. Do not use steam to clean the Hybrid Bases or restoration as it will reduce the retention of the bonding. 3. Position the Hybrid Base in the restoration so that the Guide Grip™ and the U-shape align with the screw channel for correct access for the Elos Accurate ® Hexalobular™ screw. The Guide Grip™ stabilizes the Hybrid Base in the restoration and avoids falling off. The offset is preset in the Elos Accurate Library to achieve an average gap of 40µm. 4. Check the screw channel: Test that the screw easily passes in and out of the screw channel. Also check with the screwdriver (it is the same connection on the screwdriver that the dentist will use in the cli- nic). The Guide Grip™ will keep the Hybrid Bases in position in the restoration. 5. Mount the restoration on the plaster model and tighten the screws. It is important that the milled bridge structure fits the hybrid base without gaps and voids. 6. Lift the restoration from the Hybrid Bases and make sure they connect perfectly in the plaster model analogs Elos Medtech • Engvej 33 • DK-3330 Gorlose • Denmark +45 48 21 64 99 • dentalsupport@elosmedtech.com • www.elosdental.com
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