Calvo-Guirado José Luis, Jiménez-Soto Raúl, Pérez Albacete-Martínez Carlos, Fernández-Domínguez Manuel, Gehrke Sérgio Alexandre, Maté-Sánchez de Val José Eduardo
Faculty of Health Sciences, Universidad Católica San Antonio de Murcia, Murcia 30107, Spain.
Faculty of Dentistry, Department of Oral and Implant Dentistry, CEU San Pablo University, Madrid Hospital Group, Madrid 28040, Spain.
Materials (Basel). 2018 Oct 17;11(10):2007. doi: 10.3390/ma11102007.
This in vivo study assessed (hard and soft) peri-implant tissue remodeling around implants with micro-ring and open-thread neck designs placed in a dog model. Twenty histological sections corresponding to four different implant designs that were placed in America Foxhound dogs were obtained from previous studies. All the implants had been placed under identical conditions and were divided into four groups: Group A, micro-rings on implant neck plus 0.5 mm refined surface; Group B, micro-rings on implant neck; Group C, open-thread neck; and, Group D, double-spiral neck. Eight weeks after surgery, the integrated implants were removed and processed for histological examination. Crestal bone loss and bone-to-implant contact was greater for micro-ring necks than open-thread necks. Soft tissues showed significant differences on both buccal and lingual aspects, so that the distance from peri-implant mucosa to the apical portion of the barrier epithelium was smaller in the micro-ring groups. So, in spite of generating greater bone-to-implant contact, implants with micro rings produced more bone loss than open-thread implants. Moreover, the outcomes that were obtained IPX implants smooth neck design produced less bone loss in the cervical area, following by Facility implants when compared with the other open thread and microthreaded implant designs. Implant thread design can influence on bone remodeling in the cervical area, related to bundle bone preservation.
这项体内研究评估了置于犬模型中的带有微环和开放式螺纹颈部设计的种植体周围（硬组织和软组织）的种植体周组织重塑情况。从先前的研究中获取了对应于置于美国猎狐犬体内的四种不同种植体设计的20个组织学切片。所有种植体均在相同条件下植入，并分为四组：A组，种植体颈部为微环加0.5毫米精细表面；B组，种植体颈部为微环；C组，开放式螺纹颈部；D组，双螺旋颈部。术后8周，取出完整的种植体并进行组织学检查。微环颈部的嵴顶骨吸收和骨与种植体的接触比开放式螺纹颈部更大。软组织在颊侧和舌侧均显示出显著差异，因此微环组中种植体周黏膜到屏障上皮顶端部分的距离更小。所以，尽管微环种植体产生了更大的骨与种植体接触，但与开放式螺纹种植体相比，微环种植体导致的骨吸收更多。此外，IPX种植体光滑颈部设计在颈部区域产生的骨吸收较少，其次是Facility种植体，与其他开放式螺纹和微螺纹种植体设计相比。种植体螺纹设计可影响颈部区域的骨重塑，与束状骨保存有关。
