title: Effects of various chair-side surface treatment methods on dental restorative materials with respect to contact angles and surface roughness.
abstract: Available chair-side surface treatment methods may adversely affect prosthetic materials and promote plaque accumulation. This study investigated the effects of treatment procedures on three resin restorative materials, zirconium-dioxide and polyetheretherketone in terms of surface roughness and hydrophobicity. Treatments were grinding with silicon carbide paper or white Arkansas stone, blasting with prophylaxis powder and polishing with diamond paste. Surface roughness was assessed using confocal laser scanning. Hydrophobicity as measured by water contact angle was determined by computerized image analysis using the sessile drop technique. All of the specific surface treatments performed led to significant changes in contact angle values and surface roughness (Ra) values. Median contact angle values ranged from 51.6° to 114°. Ra values ranged from 0.008 µm to 2.917 µm. Air-polishing as well as other polishing procedures increased surface roughness values in all materials except zirconium dioxide. Polyetheretherketone displayed greatest change in contact angle values after air-polishing treatment.
authors.affiliation: Interdisciplinary Department of Oral Surgery and Implantology, Department of Craniomaxillofacial and Plastic Surgery, University Cologne.
authors.forename: Candida R C
authors.initials: CR
authors.lastname: Sturz
authors.forename: Franz-Josef
authors.initials: FJ
authors.lastname: Faber
authors.forename: Martin
authors.initials: M
authors.lastname: Scheer
authors.forename: Daniel
authors.initials: D
authors.lastname: Rothamel
authors.forename: Jörg
authors.initials: J
authors.lastname: Neugebauer
mesh_terms: D001577:Benzophenones; D001672:Biocompatible Materials / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing / Q000379:methods; D057927:Hydrophobic and Hydrophilic Interactions; D007659:Ketones / Q000737:chemistry*; D008422:Materials Testing; D018613:Microscopy, Confocal; D011092:Polyethylene Glycols / Q000737:chemistry*; D011108:Polymers; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D013499:Surface Properties; D015040:Zirconium / Q000737:chemistry*
chemical_list: D001577:Benzophenones; D001672:Biocompatible Materials; D003188:Composite Resins; D003764:Dental Materials; D007659:Ketones; D011108:Polymers; C063834:polyetheretherketone; D011092:Polyethylene Glycols; D019904:Polymethyl Methacrylate; D015040:Zirconium; C028541:zirconium oxide