Fig. 2. PTG observed in radiographs at the 8-year follow-up
Fig. 2. PTG observed in radiographs at the 8-year follow-up
Fig. 1. Consort flowchart
Fig. 1. Consort flowchart
Patient/implants
Radiographic defect height at deepest site (mm)
The site with the deepest PPD (mm)
PlI
BoP
...
Characteristic
Case (PTG) group (n = 6)
Control group (n = 6)
Age (year), mean ± SD
67 ± 12.9 range, 45–79
...
Andersen, H., Aass, A.M. & Wohlfahrt, J.C. Porous titanium granules in the treatment of peri-implant osseous defects—a 7-year follow-up study.
Int J Implant Dent 3, 50 (2017). https://doi.org/10.1186/s40729-017-0106-2
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Received: 03 July 2017
Accepted: 12 October 2017
Published: 04 December 2017
DOI: https://doi.org/10.1186/s40729-017-0106-2
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were...
The present study was approved by the Regional Committee for Medical and Health Research Ethics, South East Norway (REK 2015/90). A writen informed consent was signed by all study participants
Dr. Johan Caspar Wohlfahrt has received lecture fees from the producers of the material used in the study and is a previous shareholder in the company (Tigran AB, Malmoe, Sweden). Heidi Andersen and Anne Me...
Department of Periodontology, Institute of Clinical Dentistry, University of Oslo, Pb. 1109 Blindern, 0317, Oslo, Norway
Heidi Andersen, Anne Merete Aass & Johan Caspar Wohlfahrt
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The authors would like to thank Dr. Christine Dæhli Oppedal for her participation in the data collection phase of the study and Dr. Janet M. Østrem for English proof-reading of the manuscript.
Roccuzzo M, et al. Surgical therapy of peri-implantitis lesions by means of a bovine-derived xenograft: comparative results of a prospective study on two different implant surfaces. J Clin Periodontol. 2011;38(8):738–45.
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This long-term follow-up of surgical treatment of peri-implant osseous defects showed unpredictable results. Loss of implants was only recorded in PTG-treated patients.
The present study used a non-resorbable, alloplastic material (PTG) in intra-osseous defects as a reconstructed material. This technique attempts to fill the osseous defect and not solve the disease. With regard to defect fill, it is very important to keep in mind that a non-resorbable graft material such as PTG will be left unresorbed. In this study, PTG graft particles were easily seen on radiog...
A strict maintenance program every 3–6 months followed by a high standard of oral hygiene may hold a stable peri-implant condition after peri-implantitis surgery [16].
In the present study, access to perform sufficient plaque control at the treated implants was considered acceptable due to previous corrections of the prostheses. The frequency of supportive periodontal care (SPT) was reported t...
Few studies report long-term results after treatment of peri-implantitis. In this context, it is important to remember that the only true end point for such therapies will be the loss of implants, but most studies solely report clinical and subclinical parameters which are only surrogate markers for the disease state and true result of the performed therapy [17].
In a meta-analysis by Khoskham et...
Radiographic findings demonstrated similar values after 7 years as the baseline regarding defect depth height in 6/12 treated implants. Three implants, one in the PTG group and two in the OFD group, had progression of radiographic defect depth height, measured at the deepest site, compared to baseline.
Assessing the results after 12 months, five of the implants in the PTG group and five of the ...
Three different manufactures represented the implants included in the analysis. Seven subjects had Brånemark implants, four subjects had been treated with Astra Tech implants and one subject had a Straumann implant. Eleven subjects had periodontal supportive care performed by their hygienist or general dentist at a frequency of 6 months to once yearly. One subject reported sporadic visits. About...
For each radiograph, the width of the implant was used for image calibration.
The defect height was measured from a well-defined reference point at the most coronal part of the implant body, on radiographs taken at baseline, 12 months and 7 years. The radiographic measurements were performed by one investigator (AMA), blinded to the examination timepoint. The changes in vertical defect depth we...
After 7 years (7.3 years [6.7–8]), all patients who completed the original study were invited for a re-examination. After a multitude of recall strategies including telephone and letters, 17 subjects responded and were recalled to the university dental clinic between April and November 2015. After signing the written informed consent, medical and dental history were recorded and a clinical exa...
In 2012, the same group of researchers presented results from a randomized parallel arm case-control clinical study, using porous titanium granules as a bone substitute in the corrective surgical treatment of peri-implant osseous defects. Grafting of the defects with PTG was compared with open flap debridement alone. No clinical differences between groups were found after 12 months, but a better ...
Peri-implantitis was suggested [1] as an infectious and pathological site-specific disease in surrounding peri-implant tissues.
At the 6th European Workshops on Periodontology, consensus was made on the definitions related to the peri-implant diseases, peri-implant mucositis and peri-implantitis, respectively [2].
Peri-implant mucositis describes an established inflammatory lesion in the soft ti...
A great number of different treatment protocols for peri-implantitis have been suggested but there is no consensus regarding the most effective intervention. The aim of the present study was to evaluate the long-term clinical and radiographic results from a study on peri-implant osseous defect reconstruction.
Patients having participated in a randomized clinical study 7 years earlier were invit...