Abstract：
This study evaluated radiographic graft changes following maxillary sinus floor augmentation with (A) autogenous bone, (B) 1:1 autogenous bone and deproteinized porcine bone mineral, or (C) 1:1 autogenous bone and biphasic bone graft material. Sixty patients were randomly allocated to groups A, B, and C (20 in each). CBCT scans were obtained at enrolment, after surgery (T1), after prosthetic rehabilitation (T2), and 1 year after implant loading (T3). Significant decreases in graft volume (3D) and graft height (2D) from T1 to T3 were observed in all groups (P < 0.05). However, at T2 and T3, graft volume was significantly higher in group B than in groups A and C (P < 0.05), and graft height was significantly higher in group B than in group A (P < 0.05). Bone density increased significantly from T1 to T2 in all groups (P < 0.001). However, bone density was significantly higher in group B than in groups A and C, at T2 and T3 (P < 0.05). No significant correlation between graft volume or height and implant protrusion length or residual bone height was found. In conclusion, 1:1 autogenous bone and porcine bone resulted in significantly higher graft volume, height, and bone density when compared with autogenous bone or a 1:1 ratio of autogenous bone and biphasic bone. However the higher graft volume, height, and bone density did not appear to lead to improved outcomes at 1 year of functional loading when compared to the other groups.
摘要：
这项研究评估了（A）自体骨增强上颌窦底后的影像学移植物变化，(B)1:1自体骨和脱蛋白猪骨矿物质，或(C)1:1自体骨和双相骨移植材料。60例患者随机分为A组,B,和C（每个20个）。CBCT扫描是在登记时获得的，手术后（T1），假肢康复后（T2），植入后1年（T3）。从T1到T3，所有组的移植物体积（3D）和移植物高度（2D）均显着降低（P<0.05）。然而,在T2和T3时，B组的移植物体积明显高于A和C组（P<0.05），B组移植物高度明显高于A组(P<0.05)。从T1到T2，所有组的骨密度均显着增加（P<0.001）。然而,B组骨密度明显高于A、C组,在T2和T3（P<0.05）。未发现移植物体积或高度与植入物突出长度或残余骨高度之间存在显着相关性。总之,1：1自体骨和猪骨导致明显更高的移植物体积，高度,与自体骨或自体骨和双相骨的比例为1：1时，骨密度。然而，移植物体积越大，高度,与其他组相比,在功能负荷1年时,骨密度似乎未导致结局改善.
