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Materials 2018, 11(1), 119; https://doi.org/10.3390/ma11010119

Peri-Implant Behavior of Sloped Shoulder Dental Implants Used for All-On-Four Protocols: An Histomorphometric Analysis in Dogs

1
Faculty of Health Sciences, Department of Oral and Implant Dentistry, Universidad Católica San Antonio de Murcia (UCAM), 30107 Murcia, Spain
2
College of Dentistry, Department of Digital Dentistry, University of Kentucky, Lexington, KY 40506-0001, USA
3
Biotecnos Research Center, Rua Dr. Bonazo n 57, 97015-001-Santa Maria (RS), Brazil
4
Faculty of Dentistry, Department of Oral and Implant Dentistry, Universidad San Pablo CEU, Grupo HM (Hospital Madrid), 11600 Madrid, Spain clinferfun@yahoo.es
5
Department of Prosthodontics and Digital Technology, School of Dental Medicine, Stony Brook University, Stony Brook, NY 1103, USA
*
Author to whom correspondence should be addressed.
Received: 15 December 2017 / Revised: 28 December 2017 / Accepted: 9 January 2018 / Published: 12 January 2018
(This article belongs to the Special Issue Dental Implant Materials)
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Abstract

The aim of this study was to evaluate the soft tissue thickness and marginal bone loss around dental implants with sloped micro-threaded shoulder (35° angle) in comparing with conventional design, inserted 35° degrees angulated in post extraction sockets and immediate loaded with temporary prosthesis simulating the all-on-four protocol. Materials and Methods: Six fox hound dogs received forty-eight post extraction dental implants with the same diameter and length (Medentika, Germany), but with different neck configurations. Two group of implants were inserted 1mm subcrestal. Control group has a micro-threaded neck and the Test group has a sloped microthreaded neck. Immediate loading was applied using a constructed metallic structure. After three months, soft and hard tissue levels were assessed by histomorphometric analysis. Results: The mean soft tissue thickness (STT) was 2.5 ± 0.2 mm for the Control group and 3.3 ± 0.3 mm for Test group (p = 0.036), meanwhile the mean marginal bone loss (MBL) was 1.53 ± 0.34 mm for Control group and, 1.62 ± 0.22 mm for Test group (p > 0.05). Conclusions: Within the limitations of this experimental model in dogs, the findings showed that dental implants with microthreaded and microthreaded sloped necks installed in immediate post extraction sites with immediate load, presented a comparable perimplant tissue behavior. View Full-Text
Keywords: straight microthread implants; tilted implants; scalloped implants; inmediate loading straight microthread implants; tilted implants; scalloped implants; inmediate loading
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Calvo Guirado, J.L.; Lucero-Sánchez, A.F.; Boquete Castro, A.; Abboud, M.; Gehrke, S.; Fernández Dominguez, M.; Delgado Ruiz, R.A. Peri-Implant Behavior of Sloped Shoulder Dental Implants Used for All-On-Four Protocols: An Histomorphometric Analysis in Dogs. Materials 2018, 11, 119.

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