Raab, Philipp and Alamanos, Christos and Hahnel, Sebastian and Papavasileiou, Dimitrios and Behr, Michael and Rosentritt, Martin (2017) Dental materials and their performance for the management of screw access channels in implant-supported restorations. DENTAL MATERIALS JOURNAL, 36 (2). pp. 123-128. ISSN 0287-4547,
Full text not available from this repository. (Request a copy)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 C) to Streptococcus mutans, oralis and Candida albicans suspensions. Bacterial adherence was quantified by using the fluorescence dye, Alamar Blue/resazurin, and an automated multifunctional reader. For quantification of fungal adherence the ATP-based bioluminescence approach was used. High relative fluorescence and himinescence intensities (>10,000), indicating high adhesion of streptococci and fungi were found for cotton and endofrost-pellets and low intensities (<5,000) for wax, gutta-percha, cavit and PTFE. The quantity of bacterial and fungal adhesion differed significantly between the assessed various sealing materials. In conclusion and within the limitations of this study, wax, gutta-percha, cavit and PTFE should be preferred as sealing materials.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | IN-VITRO EVALUATION; PERI-IMPLANT; ABUTMENT INTERFACE; POLYTETRAFLUOROETHYLENE TAPE; BACTERIAL-COLONIZATION; SURFACE-PROPERTIES; INTERNAL SURFACES; MICROBIAL LEAKAGE; ORAL MALODOR; ADHESION; Screw access channel; Implant; Bacteria; Candida; Peri-implantitis |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:11 |
| Last Modified: | 28 Feb 2019 10:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1075 |
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