To prevent the movement of the bony plate and to gain adequate stability, cyanoacrylate has been suggested to glue the plate to the bony edges of the antrostomy [17]. Cyanoacrylates (as methyl 2-cyanoacrylate or ethyl 2-cyanoacrylate) are widely used in surgery and have shown good compatibility [18] and biomechanical strength for fixation of grafts [19]. In an experiment in rabbits [17], the antrostomy at the control site was covered with a collagen membrane, while at the test side the bony window was fixated with cyanoacrylate. After 8 weeks of healing, no differences were seen in the bone formation within the sinus. However, the bone plate was incorporated into the antrostomy by the newly formed bone, while at the collagen membrane sites the healing was incomplete.

No data are available in larger animal models or with larger antrostomy, so the need exists for further such evidence on the healing of the repositioned bone plate and augmented sinus. Hence, the aim of the present experiment was to compare the healing of the augmented sinus where the antrostomy was covered with a resorbable membrane or a repositioned bone plate, both fixed with cyanoacrylate.