I have hybrid permanent upper denture that are screwed in. I am concerned about cleaning, advice?

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There is now a better alternative to screws.   The same company that makes the Snap in Denture attatchments for removable snap in dentures now has created a screw free alternative that only can be removed by dentist.  It is a cleaner and easier to manage fixed denture with no screws or screw holes makeing in ideal .  It can be easily removes by hydraulics in the dental office.
Personally, I prefer the snap in denture thart is far easier to clean but  the same company is now making a fixed snap.
Good news for all on four or six denture patients.

Is all on four a good idea?  If one implant fails the case fails, additional implants decrease risk but increase cost and complexity.
This new F-Tx system reduces complexity.
Ira L Shapira DDS, D,ABDSM, D,AAPM, FICCMO
Chair, Alliance of TMD Organizations
Diplomat, American Academy of Pain Management
Diplomat, American Board of Dental Sleep Medicine
Regent & Fellow, International College of CranioMandibular Orthopedics
Board Eligible, American Academy of CranioFacial Pain
Dental Section Editor, Sleep & Health Journal
Member, American Equilibration Society
Member, Academy of Applied Myofunctional Sciences

You can easily clean this with either superfloss or  a waterpik, go to your routine visits to get this checked and have x-rays just to make sure everything is fine. 

We recommend all of our implant Denture Patients return to the office at least once a year to have the restorations removed,polished and the implants and gum examined. 

For daily hygiene we recommend using a waterpik twice a day. the waterpik should be half water half hydrogen peroxide and one drop of dish washing soap.  Our experience is this keeps the restorations very clean.