A new use for self-etching resin adhesives: cementing bone fragments.
OBJECTIVE
To evaluate the bond capacities of four self-etching resin cements and the self-etching adhesives of the same manufacturer when used to cement bone fragments and compare them with a well-known N-butyl-2-cyanoacrylate bone adhesive.


METHODS
125 cylindrical bone specimens from pig mandibular ramus bone were prepared using terphane burs and cemented to the corticals of 125 other specimens obtained from pig mandibular body bone using the following bond systems: Group A: Adper PLP/Relyx; group B: Optibond/Maxcem; group C: Hystoacryl; group D: AdheSE/Multilink; group E: G-Bond/G-Cem. Shear bond strength was measured 15 min after cement application using a universal testing machine.


RESULTS
Shear bond strength results: group A 2.54+/-0.23 MPa; group B 4.83+/-0.4 MPa; group C 2.90+/-0.24 MPa; group D 2.10+/-0.17 MPa; group E 4.22+/-0.24 MPa. Values for shear bond strength were significantly greater for group B and E compared to groups A, C and D (p<0.005, test Mann-Whitney). SEM images showed the presence of a hybrid layer similar to that formed by these bond systems when used on dentine.


CONCLUSIONS
Within the limitations of an in vitro investigation, results show that self-etching resin cements together with self-etching adhesives may be used for cementing bone fragments.
Ortiz Ruiz
A J
AJ
Department of Integral Pediatric Dentistry, University of Murcia, Murcia, Spain.
Vicente
A
A
Camacho Alonso
F
F
López Jornet
P
P
D000180:Acrylic Resins / Q000627:therapeutic use; D000818:Animals; D001843:Bone Cements / Q000627:therapeutic use*; D004659:Enbucrilate / Q000627:therapeutic use; D008334:Mandible / Q000601:surgery* / Q000648:ultrastructure; D008422:Materials Testing; D008689:Methacrylates / Q000627:therapeutic use; D008855:Microscopy, Electron, Scanning; D011897:Random Allocation; D019279:Resin Cements / Q000627:therapeutic use*; D033081:Shear Strength; D013314:Stress, Mechanical; D013499:Surface Properties; D013552:Swine; D014014:Tissue Adhesives / Q000627:therapeutic use
D000180:Acrylic Resins; C489662:AdheSE cement; D001843:Bone Cements; C498353:G-Bond; C528107:G-Cem resin cement; C515955:Maxcem; D008689:Methacrylates; C092987:Optibond; C408584:Prompt L-Pop; C483701:Rely X Unicem; D019279:Resin Cements; D014014:Tissue Adhesives; C502351:multilink adhesive system; D004659:Enbucrilate