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Astra Tech and Brånemark system implants: a 5‐year prospective study of marginal bone reactions

Identifieur interne : 007A93 ( Main/Exploration ); précédent : 007A92; suivant : 007A94

Astra Tech and Brånemark system implants: a 5‐year prospective study of marginal bone reactions

Auteurs : Per Strand [Suède] ; Bo Engquist [Suède] ; Simon Dahlgren [Suède] ; Kerstin Gröndahl [Suède] ; Eva Engquist [Suède] ; Hartmut Feldmann [Suède]

Source :

Clinical Oral Implants Research [ 0905-7161 ] ; 2004-08.

RBID : ISTEX:D8FE47E9725D876B16294F54DFB6721356D6AFEC

Descripteurs français

Wicri :
- topic : étude comparative.

English descriptors

Abstract

Abstract: This paper describes the 5‐year results of a comparative study between Astra Tech and Brånemark system implants. The aim was to compare the systems primarily with regard to bone level changes, and also with regard to other variables of interest. Sixty‐six patients with edentulous jaws were included in the study. Randomisation schedules were used to allocate the patients to the two implant systems. 184 Astra Tech implants with a titanium‐blasted surface and 187 Brånemark implants with a turned surface were used. The implants were inserted with a two‐stage technique and the insertion followed the routines for the respective implant system. All patients were provided with full‐arch fixed bridges. All patients were followed up with clinical and radiographic examinations from fixture insertion to the 5‐year follow‐up. The total mean bone level change in the upper jaw between fixture insertion and the 5‐year examination was −1.74±0.45 mm at the Astra implants and −1.98±0.21 at the Brånemark implants. The corresponding values for the lower jaw were −1.06±0.19 for Astra and −1.38±0.17 for Brånemark. The major postoperative changes of the marginal bone level took place between fixture insertion and baseline. During this period, there was also a different pattern of bone remodelling between the implant systems. Between baseline (prosthesis connection) and the 5‐year examination, the marginal bone level changes were small, with no difference between the implant systems. The implant stability was examined with the supraconstructions removed. At the 5‐year examination, the survival rate for Astra Tech implants was 98.4% and for the Brånemark implants it was 94.6%. The difference was not statistically significant.

Url:

https://api.istex.fr/document/D8FE47E9725D876B16294F54DFB6721356D6AFEC/fulltext/pdf

DOI: 10.1111/j.1600-0501.2004.01028.x

Affiliations:

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<term>Astra implants</term>
<term>Astra tech</term>
<term>Astra tech implants</term>
<term>Astrand</term>
<term>Baseline</term>
<term>Baseline examination</term>
<term>Bone level</term>
<term>Bone level change</term>
<term>Bone level changes</term>
<term>Bone loss</term>
<term>Bone remodelling</term>
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<term>Branemark implants</term>
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<term>Edentulous jaws</term>
<term>Edentulous mandibles</term>
<term>Engquist</term>
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<term>Error variance</term>
<term>Impl</term>
<term>Implant</term>
<term>Implant stability</term>
<term>Implant surfaces</term>
<term>Implant systems</term>
<term>Implant treatment</term>
<term>Implantate</term>
<term>Implantes</term>
<term>Implants research</term>
<term>Individual implants</term>
<term>Insertion</term>
<term>International journal</term>
<term>Lekholm</term>
<term>Mandible</term>
<term>Marginal bone changes</term>
<term>Marginal bone level</term>
<term>Marginal bone level changes</term>
<term>Maxillofacial</term>
<term>Median value</term>
<term>Nemark</term>
<term>Nemark implants</term>
<term>Nemark system</term>
<term>Nemark system implants astrand</term>
<term>Observation period</term>
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<term>Oral maxillofacial implants</term>
<term>Osseointegrated implants</term>
<term>Para</term>
<term>Plaque accumulation</term>
<term>Present study</term>
<term>Radiograph</term>
<term>Radiographic</term>
<term>Radiographic evaluation</term>
<term>Reference point</term>
<term>Steady state</term>
<term>Survival rate</term>
<term>Survival rates</term>
<term>Tech</term>
<term>Total variance</term>
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<term>Xture</term>
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<term>Bone level changes</term>
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<term>Branemark implants</term>
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<term>Marginal bone level changes</term>
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<term>Median value</term>
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<term>Nemark implants</term>
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<term>Radiographic</term>
<term>Radiographic evaluation</term>
<term>Reference point</term>
<term>Steady state</term>
<term>Survival rate</term>
<term>Survival rates</term>
<term>Tech</term>
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<front><div type="abstract">Abstract: This paper describes the 5‐year results of a comparative study between Astra Tech and Brånemark system implants. The aim was to compare the systems primarily with regard to bone level changes, and also with regard to other variables of interest. Sixty‐six patients with edentulous jaws were included in the study. Randomisation schedules were used to allocate the patients to the two implant systems. 184 Astra Tech implants with a titanium‐blasted surface and 187 Brånemark implants with a turned surface were used. The implants were inserted with a two‐stage technique and the insertion followed the routines for the respective implant system. All patients were provided with full‐arch fixed bridges. All patients were followed up with clinical and radiographic examinations from fixture insertion to the 5‐year follow‐up. The total mean bone level change in the upper jaw between fixture insertion and the 5‐year examination was −1.74±0.45 mm at the Astra implants and −1.98±0.21 at the Brånemark implants. The corresponding values for the lower jaw were −1.06±0.19 for Astra and −1.38±0.17 for Brånemark. The major postoperative changes of the marginal bone level took place between fixture insertion and baseline. During this period, there was also a different pattern of bone remodelling between the implant systems. Between baseline (prosthesis connection) and the 5‐year examination, the marginal bone level changes were small, with no difference between the implant systems. The implant stability was examined with the supraconstructions removed. At the 5‐year examination, the survival rate for Astra Tech implants was 98.4% and for the Brånemark implants it was 94.6%. The difference was not statistically significant.</div>
</front>
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Astra Tech and Brånemark system implants: a 5‐year prospective study of marginal bone reactions

Astra Tech and Brånemark system implants: a 5‐year prospective study of marginal bone reactions

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Abstract

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