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Dental materials and their performance for the management of screw access channels in implant-supported restorations

Raab, Philipp ; Alamanos, Christos ; Hahnel, Sebastian ; Papavasileiou, Dimitrios ; Behr, Michael ; Rosentritt, Martin



Abstract

Unsuccessfully sealed screw access channels of prosthetic implant abutments may lead to malodor or peri-implant diseases in gingival tissues adjacent to implant-supported restorations. Therefore, 72 sets of screw channel analogs with six different materials incorporated (Polytetrafluoroethylene (PTFE), wax, gutta-percha, cavit, endofrost-pellets and cotton pellets) were exposed (2.5 h, 37 degrees ...

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