■修改牙种植体的表面纹理可增强其对骨骼和种植体组织界面的生物反应,导致部队的成功支持。这项研究评估了喷砂的影响,喷砂加酸蚀刻,呃,Cr:YSGG激光器,蜂胶种植体表面处理和咬合负荷对狗钛牙种植体骨整合的影响。
■将72个直径为4毫米,长度为10毫米的钛牙科植入物根据植入物表面改性分为四组(每组n=18):A组:喷砂加酸蚀刻,B组:Al2O3喷砂,C组:Er,Cr:YSGG激光器,D组:蜂胶涂层。使用了24只当地品种的雄性狗。前磨牙(P1,P2和P3)在下颌骨的左侧拔除,骨愈合12周后,植入物单侧安装。评估了从植入物安装开始的三个研究时间(14、90和180天)的骨整合。骨整合90天后,使用口内扫描仪扫描狗的下巴,以虚拟设计螺钉保留的三单元冠。在第14、90和180天处死动物之前拍摄最终的X射线照片,并进行组织学分析。
■射线照相分析显示了沿着治疗组的植入物表面并与之接触的新骨形成(NBF)。A和B组14天后的组织学分析显示,骨骼生长呈均匀且持续的模式,并且在新骨小梁的腔隙中有许多成骨细胞,很少有骨细胞。C组显示,薄骨小梁上的成骨细胞数量增加。D组显示与骨有关的生成力。90天,骨骼向内生长增加,在所有治疗的植入物组中,新骨成熟。180天,致密成熟的骨并置与延迟加载的植入物表面直接接触。
■射线照相检查显示,表面修饰显着影响骨整合,植入物表面和周围骨骼之间有很强的结合。14天间隔的组织学切片显示出明显的骨重塑活动,特别是在喷砂加酸蚀刻和喷砂改性的植入物表面基团。在90天的间隔,骨向内生长增加,新的骨头变得成熟了,特别是在喷砂和蜂胶表面改性组。在延迟加载的植入物骨整合180天后,观察到不同种植体处理组之间的差异,骨重塑显著,尤其是蜂胶涂层组。
UNASSIGNED: Modifying the dental implant\'s surface texture enhances its biological response to the bone and implant‒tissue interface, resulting in the successful support of forces. This
study assessed the impact of sandblasting, sandblasting plus acid etching, Er,Cr:YSGG laser, and propolis implant surface treatments and occlusal load on the osseointegration of titanium dental implants in dogs.
UNASSIGNED: Seventy-two titanium dental implants with a diameter of 4 mm and a length of 10 mm were divided into four groups according to implant surface modifications (n=18 for each group): group A: sandblasting plus acid etching, group B: sandblasting with Al2 O3, group C: Er,Cr:YSGG laser, group D: propolis coating. Twenty-four local breed male dogs were used. Premolar teeth (P1, P2, and P3) were extracted on the left side of the mandible, and after 12 weeks of bone healing, implants were unilaterally installed. The osseointegration at three
study times from implant installation (14, 90, and 180 days) was evaluated. The dog jaws were scanned using an intraoral scanner for the virtual design of screw-retained three-unit crowns after 90 days of osseointegration. Final radiographs were taken before the animals were sacrificed at 14, 90, and 180 days, and the histological analysis was performed.
UNASSIGNED: Radiographic analysis showed new bone formation (NBF) along and in contact with the implant surface of the treated groups. The histological analysis after 14 days in groups A and B revealed a uniform and ongoing pattern of bone growth and many osteoblasts with few osteocytes within lacunae in new bone trabeculae. Group C showed an increase in the number of osteoblasts lining thin bone trabeculae. Group D showed a generative power concerning bone. At 90 days, there was increased bone ingrowth, and the new bone matured in all the treated implant groups. At 180 days, dense mature bone apposition was in direct contact with delayed-loaded implant surfaces.
UNASSIGNED: A radiographic examination revealed that surface modification significantly impacted osseointegration, with a strong bond between the implant surface and the surrounding bone. The histological sections at the 14-day interval revealed obvious bone remodeling activity, especially in sandblasting plus acid etching and sandblasting-modified implant surface groups. At the 90-day interval, bone ingrowth had increased, and the new bone became mature, especially in sandblasting and propolis surface modification groups. After 180 days of the delayed-loaded implant osseointegration, differences were observed between different implant-treated groups with a remarkable remodeling of the bone, especially in the propolis coating group.