title: In-vivo prospective comparison of bond failure rates of 2 self-etching primer/adhesive systems.
abstract: BACKGROUND
  The purpose of this study was to comparatively assess the bond failure rates of orthodontic brackets bonded with 2 self-etching primer (SEP) bonding systems over an 18-month period.
  
  
  METHODS
  Thirty-six consecutively treated orthodontic patients were bonded with Transbond Plus SEP with Transbond XT adhesive (3M Unitek, Monrovia, Calif) and with Ideal 1 SEP with Ideal 1 adhesive (GAC International, Bohemia, NY). In each patient, the teeth were divided into 2 groups based on the universal numbering system (1-32). All even-numbered teeth (340) were bonded with the Transbond system, and all odd-numbered teeth (340) were bonded with the Ideal 1 system. A total of 680 teeth were bonded and followed for a minimum of 18 months.
  
  
  RESULTS
  The average percentages of bond failures were 12.4% and 4.1% in the teeth treated with Ideal 1 and Transbond Plus, respectively (P<.001), for a difference of 8.4 percentage points (95% CI, 4.2 to 12.6 percentage points).
  
  
  CONCLUSIONS
  Because the bond failure rate with the Transbond Plus SEP system was one third that of the Ideal 1 SEP system, Transbond Plus appears to be a better choice for routine orthodontic clinical practices.
authors.affiliation: Faculty member, Maxwell S. Fogel Department of Dental Medicine, Albert Einstein Medical Center, Philadelphia, Pa 19141-3098, USA.
authors.forename: Anthony
authors.initials: A
authors.lastname: Pasquale
authors.forename: Martin
authors.initials: M
authors.lastname: Weinstein
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Borislow
authors.forename: Leonard E
authors.initials: LE
authors.lastname: Braitman
mesh_terms: D000293:Adolescent; D002648:Child; D001840:Dental Bonding / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D016910:Orthodontic Brackets; D011446:Prospective Studies; D019279:Resin Cements
chemical_list: D019279:Resin Cements; C429625:Transbond Plus Self-Etching Primer