UCLA Type Implants: Crowns Have Less of a Tendency to Loosen?

posted in Restoration of Dental Implants, advice

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Dr. E. asks:
The first implants I learned how to restore were the UCLA type implants where the crown was screwed directly into the implant fixture. The screw used for this was I think bigger and wider than the screw used to torque down an abutment. I have not used them in a while. I switched to using an abutment and crown configuration where I torque down the abutment and cement the crown. I have had a few abutment screws loosen up. I do not remember having this problem when I used the UCLA type crown. Is this the case – are the screws for the UCLA type crowns bigger and wider than the screws used to torque down abutments? Do UCLA type crowns have less of a tendency to loosen?








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