Original study - ZZI 04/2015

Retrospective analysis of cases treated with iSy implants in three dental practices: one-year follow-up

Introduction: For patients with limited financial resources, the price-performance ratio of dental implant treatment plays an important role. The iSy implant system offers effective time and cost management for the treatment of standard indications. The system comprises a reduced number of components in favor of higher standardization. The aim of this retrospective analysis is to document the use and success of the implant system using transgingival healing 2 years after introducing the system in dental practices.

Material and Methods: All patients treated with iSy implants and prosthetic restorations in 3 private practices between January 2013 and September 2014 were included in the analysis. A total of 87 patients with 166 implants were descriptively evaluated with regard to bone quality (Lekholm and Zarb), number, dimension, position of the implants, augmentation procedures, point in time of implantation and loading, type of restoration, implant survival rate, and complications.

Results: The implants were inserted in type 1 and 2 (72 %) or type 3 (28 %) bone. Simultaneous augmentation was necessary for 6 % of the implants. Immediate implantation was performed for 5.4 % of the implants. Implant diameters of 3.8 mm (68.1 %) and 4.4 mm (25.9 %) were the most commonly selected. Immediate loading was carried out in 22.9 % of the implants. In case of delayed loading the healing time was 10.1 ± 8.0 weeks. Final restorations were placed in 84 patients (160 implants) and divided into the 4 standard indications single crown (63.1 %), bridge (9.5 %), partial denture (2.4 %), and full denture (25.0 %). Single crown restorations were mainly used in the posterior region and in patients under 60 years of age (71.7 %); full dentures were placed essentially in patients over 60 years of age (85.7 %). Most of the full dentures (57.1 %) were retained by 4 implants. The most frequently used abutments were the CAD/CAM titanium bases for single crown and bridge restorations and the universal and Locator abutments for full and partial dentures. The mean follow-up time post loading was 9.2 ± 4.8 months (0.1–20.3 months). Three quarters of all implants were loaded for at least 6 months. The cumulative survival rate over 23 months was 97.5 %. Reported complications included 6 prosthetic complications as well as 2 patients with pain and one with bone loss.

Conclusion: In accordance with the implant system concept standard indications were treated with one-stage transgingival healing. The results of this analysis indicate that the system is a reliable as well as time and cost-effective implant solution for selected cases.

Keywords: Implant; Promote; iSy; prosthetic restoration; loading; survival rate

Cite as:

Retrospective analysis of cases treated with iSy implants in three dental practices: one-year follow-up. Z Zahnärztl Implantol 2015;31:282–294

DOI 10.3238/ZZI.2015.0282–0294

Introduction

Implant-borne, fixed restorations are an established, reliable method for providing patients with long-term prosthetic treatment following tooth loss [15, 24]. A current review article, which evaluated 23 publications and a total of 7,711 implants over a follow-up period of at least 10 years, showed the implants to have a cumulative survival rate of 94.6 % over an average of 13.4 years [20]. Recently, another review also reported very good results for immediate implants: The two-year survival rate was 98.4 % [18].

Nowadays, for many operators not only a good prognosis but also the price-performance ratio play an increasingly important role when selecting an implant system. Whereas with highly sophisticated esthetic indications and where the costs are less significant custom solutions frequently provide the best results, with many other indications increased standardization can enhance time-efficiency, reduce treatment costs, and make implant treatment available to patients with limited financial resources.

The iSy implant system recently launched by Camlog (2013) with standardized inner diameter connectors for all sizes of implant, a reduced number of surgical instruments as well as an implant sales set comprising single-patient shape-drill, implant, gingiva former and multifunctional cap increases cost-effectiveness yet maintains the high quality of the implants and components. The single-patient instruments simplify handling for the operator in the dental practice as processing is no longer required. In addition, transgingival healing requires one less operation and, therefore, fewer treatment sessions than subgingivally healing implants. Due to the reduced drilling sequence and high cutting performance of the single-patient drill less time is required for preparing the implant site: Once the pilot site has been prepared, the final implant site is drilled immediately with the single-patient shape-drill supplied. The implant base pre-fitted to the implant enables the implant to be picked up directly with the placement instrument (Direct Pick-up) and the gingiva former and multifunctional caps supplied to be secured in place via the click-in mechanism. The multifunctional caps can be used for digital or conventional impression-taking and as temporary bases.

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