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Influence of Implant Neck Design on Peri-Implant Tissue Dimensions: A Comparative Study in Dogs

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
Biotecnos Research Center, Montevideo 11100, Uruguay
Author to whom correspondence should be addressed.
Materials 2018, 11(10), 2007;
Received: 9 September 2018 / Revised: 26 September 2018 / Accepted: 6 October 2018 / Published: 17 October 2018
(This article belongs to the Special Issue Biomaterials and Implant Biocompatibility)
PDF [6384 KB, uploaded 17 October 2018]


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. View Full-Text
Keywords: bone levels; dental implants; neck design; soft tissue dimensions bone levels; dental implants; neck design; soft tissue dimensions

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Calvo-Guirado, J.L.; Jiménez-Soto, R.; Pérez Albacete-Martínez, C.; Fernández-Domínguez, M.; Gehrke, S.A.; Maté-Sánchez de Val, J.E. Influence of Implant Neck Design on Peri-Implant Tissue Dimensions: A Comparative Study in Dogs. Materials 2018, 11, 2007.

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