A 2-Year Clinical Report of Patients Treated With Two Loading Protocols for Mandibular Overdentures: Early Versus Conventional Loading

Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
Journal of Periodontology (Impact Factor: 2.71). 01/2007; 77(12):1998-2004. DOI: 10.1902/jop.2006.060115
Source: PubMed


The original Brånemark protocol for dental implant treatment was based on submerged healing prior to loading. In recent years, immediate/early functional loading has been reported to be possible with high success for various indications including two splinted mandibular implants supporting an overdenture. However, there are a limited number of studies regarding the early loading protocol for two unsplinted mandibular implants supporting an overdenture.
A total of 26 edentulous patients were treated with two unsplinted dental implants supporting mandibular overdentures. All implants were placed in the canine regions of each mandible according to the one-stage surgery. For the test group, overdentures were connected 1 week after surgery, and for the control group, overdentures were connected 3 months after surgery. Peri-implant parameters were recorded 1, 6, 12, 18, and 24 months after surgery. Marginal bone levels were evaluated at implant placement and after 6, 12, 18, and 24 months. Clinical stability measurements were performed at surgery, and after 3, 6, 12, 18, and 24 months.
No implant from either group was lost during 2 years. Clinical peri-implant parameters, clinical implant stability measurements, and marginal bone resorptions showed no statistically significant differences between the two groups during 24 months.
The results of this clinical trial suggest that the early loading approach of two dental implants supporting a mandibular overdenture does not jeopardize peri-implant soft tissue health, marginal bone resorption, and implant stability.

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    • "Insertion torque, tapping, tactile sense, MM device, and RFA are some of the methods used to evaluate primary stability (Meredith et al. 1997, 1998; Sennerby & Meredith 1998; Turkyilmaz et al. 2006a, 2006b). Peri-implant clinical parameters, marginal bone levels around implants, and RFA measurements are non-invasive methods that can be used for routine periodical evaluations of dental implants (Schwartz-Arad et al. 2005; Tozum et al. 2005; Turkyilmaz et al. 2006a, 2006b). "
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    Clinical Oral Implants Research 09/2011; 23(10):1161-7. DOI:10.1111/j.1600-0501.2011.02277.x · 3.89 Impact Factor
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    • "The following benefits of an immediately loaded implant-supported prosthesis in edentulous patients are reduced surgical and prosthetic visits along with improved function and patient's comfort, as for a functional prosthesis delivered immediately after surgery.4,5 Immediate loading of mandibular overdenture supported by 2 to 4 implants connected with a gold bar appears as a very promising treatment modality similar to delayed loading protocol.6,7 Ball, magnet and bar attachments have been commonly used to retain implant-supported overdenture over the last several decades. "
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    • "Recent studies indicate comparable success rates and patient satisfaction for immediate loading protocols with splinted and unsplinted implants in the edentulous jaw (Payne et al. 2001, 2002; Raghoebar et al. 2003; Chiapasco 2004; Naert et al. 2004; Turkyilmaz et al. 2006). Therefore, immediate functional loading of unsplinted implants with overdentures may become more widespread as a simplified and efficient treatment option for edentulous patients (Kawai & Taylor 2007). "
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