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Influence of screw access on the retention of cement-retained implant prostheses

Paulo Vicente Barbosa da Rocha, CD, MD, DD,a
Mirella Aguiar Freitas, CD,b and
Tiago de Morais Alves da Cunha

Statement of problem. Many studies have compared cement-retained and screw-retained implant prostheses. One disadvantage of cement-retained crowns is the lack of predictable retrievability, which can be overcome by creating a screw access channel on the occlusal surface.

Purpose. The purpose of this study was to evaluate the influence of a screw access channel on the retention of ce- ment-retained implant prostheses.

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