Torque required to loosen single-tooth implant abutment screws before and after simulated function.
The amount of torque required to loosen screws from three different antirotational screw-retained abutment/implant combinations was compared (with and without adhesive sealant applied) after 6 kg of force was applied during simulated intraoral movements. Movements were generated over two simulated time periods, representing 1 and 6 months. There was no significant decrease (alpha < .05) in the torque required to loosen the screws after either time period when using Calcitek Omnilock or Stryker Minimatic. The Core-Vent Bio-Vent specimens, however, exhibited a significant decrease (alpha < .05) in the amount of torque required to loosen the screws at the 1-month test period only. The addition of adhesive sealant significantly increased (alpha < .05) the amount of torque necessary to loosen the screws only in the Core-Vent specimens.
Breeding
L C
LC
Department of Oral Health Practice, College of Dentistry, Lexington, Kentucky 40536.
Dixon
D L
DL
Nelson
E W
EW
Tietge
J D
JD
D000704:Analysis of Variance; D001863:Bone Screws; D000044:Dental Abutments; D003738:Dental Cements; D015921:Dental Implants; D017268:Dental Prosthesis Retention / Q000295:instrumentation*; D003799:Dental Stress Analysis; D011475:Prosthesis Failure; D012399:Rotation; D013997:Time Factors; D014093:Tooth, Artificial
C085730:Ceka Bond; D003738:Dental Cements; D015921:Dental Implants