title: Inadequate shear bond strengths of self-etch, self-adhesive systems for secure orthodontic bonding.
abstract: This study evaluated the shear bond strength (SBS) of a traditional orthodontic bracket bonding agent (Transbond XT) against two self-etch, self-adhesive systems (Maxcem Elite and Vertise Flow). Sixty premolar teeth and sixty brackets were randomly and equally divided into five groups: Transbond XT (TXT) as the control, Maxcem Elite (ME) without etching, ME with etching (ME/ Etch), Vertise Flow (VF) without etching, and VF with etching (VF/Etch). Respective SBS results of the five groups were 9.86±3.20, 4.67±2.94, 7.82±2.56, 2.55±0.77, and 7.89±1.17 MPa. SBS values of the new self-etch adhesive systems were significantly lower than the traditional etch-and-rinse control (p<0.005). However, no significant differences were found between TXT and the self-adhesives applied with etching (p>0.005). After debonding, ARI scores "0" and "1" were predominant in non-etched ME and VF groups. It was concluded that new self-etch, self-adhesive bonding systems require additional phosphoric acid application to achieve comparable SBS values as the traditional orthodontic bonding agent.
authors.affiliation: Department of Orthodontics, Faculty of Dentistry, Gaziantep University 27310, Turkey. erenisman@hotmail.com
authors.forename: Eren
authors.initials: E
authors.lastname: İşman
authors.forename: Emine Sirin
authors.initials: ES
authors.lastname: Karaarslan
authors.forename: Ridvan
authors.initials: R
authors.lastname: Okşayan
authors.forename: Ali Rıza
authors.initials: AR
authors.lastname: Tunçdemır
authors.forename: Serdar
authors.initials: S
authors.lastname: Üşümez
authors.forename: Nejdet
authors.initials: N
authors.lastname: Adanir
authors.forename: Mehmet Ata
authors.initials: MA
authors.lastname: Cebe
mesh_terms: D000134:Acid Etching, Dental; D003188:Composite Resins; D001840:Dental Bonding; D003799:Dental Stress Analysis; D006801:Humans; D009967:Orthodontic Appliances; D019279:Resin Cements; D033081:Shear Strength
chemical_list: D003188:Composite Resins; C515955:Maxcem; D019279:Resin Cements; C581746:vertise flow