Internal Prosthetic Manual - BioHorizons

BAR OVERDENTURE SCREW-RETAINEDLab 1 - Working castFollow the steps for creating an Implant-level Impression and workingmodel using the Open Tray (Direct) Pick-up Technique (Non-hexed), seepages 21-24.IMPORTANTLaser-welding procedures allow the use of precision-machined titaniumparts to be used instead of castable components. This often results ina more passive-fitting bar. Use only a qualified, trained laser weldingdental lab.Lab 2 - Fabricating a verification barAttach the Direct Pick-up Copings to the Implant Analogs with theAbutment Screws. Remove the top section of the Direct Pick-up Copings.Laser weld the bar as prescribed, without attachments, to the modifiedDirect Pick-up Copings.Verify passive fit by removing all screws and reinserting a long screw in oneof the most distal copings. Hand-tighten with the .050” (1.25mm) HexDriver. Passive fit is verified if the remaining copings in the verificationsbar rest passively on the remaining implant analogs.IMPORTANTA verification bar is simply the final bar without attachments.Laser assembly provides the ability to modify the bar and configurethe attachments at any time during the fabrication process withoutthe risk of having to remake the bar. The attachments will be laserwelded onto the bar after a jaw relationship is established.Send to Clinician• Verification bar and baseplate• Working modelshop online at www.biohorizons.com86