title: Implant abutment screw reverse torque values before and after plasma cleaning.
abstract: This in vitro study analyzed the reverse torque (RevT) of abutment screws following different cleaning treatments. A convenience sample of 50 customized titanium abutment screw complexes was divided into five groups: cleaning by steam (control group), cleaning by Argon plasma (test groups 1 and 2 [with chlorhexidine gel]), and replacement of old screws with new ones (test groups 3 and 4 [with chlorhexidine gel]). Abutments were screwed onto implants and tested for RevT. The RevT of the test groups was significantly higher than that of the control group. No statistically significant difference between test groups was noted except between groups 2 and 3.
authors.affiliation: studio@micarelli.eu
authors.forename: Costanza
authors.initials: C
authors.lastname: Micarelli
authors.forename: Luigi
authors.initials: L
authors.lastname: Canullo
authors.forename: Paolo
authors.initials: P
authors.lastname: Baldissara
authors.forename: Marco
authors.initials: M
authors.lastname: Clementini
mesh_terms: D000891:Anti-Infective Agents, Local / Q000627:therapeutic use; D001128:Argon; D002710:Chlorhexidine / Q000627:therapeutic use; D000044:Dental Abutments; D059605:Dental Implant-Abutment Design / Q000295:instrumentation*; D003764:Dental Materials / Q000737:chemistry; D004203:Disinfection / Q000379:methods*; D006801:Humans; D008422:Materials Testing; D058626:Plasma Gases / Q000627:therapeutic use*; D013227:Steam; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry; D019415:Torque
chemical_list: D000891:Anti-Infective Agents, Local; D003764:Dental Materials; D058626:Plasma Gases; D013227:Steam; D001128:Argon; D014025:Titanium; D002710:Chlorhexidine