A screw retained implant supported bridge is a dental restoration that replaces missing teeth by inserting two or more artificial titanium roots into the jawbone and attaching PFM teeth to them. It is held place by screws which attach to the implants and can relatively easily be taken out.
1) Screw-retained design of implant-based restorations allows for easy and nondestructive retrievability of the restoration for maintenance or repair procedures;
2) Screw-channel orientation and access position can be adjusted through the use of Mult-unit abutments or angulated screw channel systems;
3) Providing the option to abandon cementation procedures and their risk of subgingival cement excess, a screw-retained design is a contribution towards healthy peri-implant tissues
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