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Simplified methods of implant treatment in the edentulous lower jaw. Part II: Early loading
Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Dental Clinic.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Dental Clinic. Östergötlands Läns Landsting, Reconstruction Centre, Department of Oral Surgery UHL.
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2004 (English)In: Clinical Implant Dentistry and Related Research, ISSN 1523-0899, E-ISSN 1708-8208, Vol. 6, no 2, 90-100 p.Article in journal (Refereed) Published
Abstract [en]

Background: Most implant treatment is performed with a two-stage surgical procedure. A disadvantage of these implant treatments is that they are time-consuming. Purpose: The aim of the present study was to evaluate the results of early loading in the edentulous mandible and to compare those results with treatment results of one-stage surgery followed by a healing period and with two-stage surgery. Material and Methods: The material comprises four treatment groups with a total of 108 patients with edentulous lower jaws and 432 implants. All patients were treated with Brånemark implants (Nobel Biocare AB, Gothenburg, Sweden) with a turned surface and fixed prostheses in the lower jaw, supported by four implants. The patients in group A were treated with a one-stage procedure, a two-piece implant, and a 3-month healing period before loading. Group B (control group) had a two-stage procedure, a two-piece implant, and a 3-month healing period. Group C had a one-stage procedure, a one-piece implant, and a 3-month healing period. Group D was treated with a one-stage surgical procedure, a two-piece implant, and early loading (within 3 weeks). All patients were provided with a Procera® Implant Bridge (Nobel Biocare) with a framework made by computer-assisted milling of one piece of pure titanium. All patients have been followed up for 1 year. Results: The survival rates were 93.2 to 93.3% in the experimental groups and 97.5% in the control group. The difference was not statistically significant. The measurements of the marginal bone level demonstrated a mean bone loss of 0.8 mm between fixture insertion and the 1-year examination in patients with early loading (group D) whereas the bone loss in patients who underwent a healing period before loading was 1.3 to 1.6 mm. The difference between the control group and the group with early loading was significant. Conclusions: Survival rates for patients treated with a one-stage procedure were lower than survival rates for patients treated according to a "classical concept," but the differences were not statistically significant. There was no difference between treatment results with one-piece and two-piece implants. The implant loss in patients with early loading was probably caused by overloading, and careful supervision of occlusal loading is recommended. Early loading gave significantly less marginal bone loss when compared with two-stage surgery.

Place, publisher, year, edition, pages
2004. Vol. 6, no 2, 90-100 p.
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Medical and Health Sciences
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URN: urn:nbn:se:liu:diva-24004Local ID: 3559OAI: oai:DiVA.org:liu-24004DiVA: diva2:244320
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2017-12-13

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Åstrand, PerAnzén, BengtFeldmann, HartmutNord, Per GunnarSahlholm, StenSvärdström, Pia

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Åstrand, PerAnzén, BengtFeldmann, HartmutNord, Per GunnarSahlholm, StenSvärdström, Pia
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Faculty of Health SciencesDental ClinicDepartment of Oral Surgery UHL
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Clinical Implant Dentistry and Related Research
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