Principles of Attachment Selection for Implant Supported Overdentures
| Principles of Attachment Selection for Implant Supported Overdentures | Hamid Shafie, DDS* and George Obeid, DDS** |
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surgical considerations one would apply to implant surgery utilizing traditional implants still apply here. More detail information about the two different types of permanent overdenture implants follows. The OS Overdenture Implant The OS overdenture implant is a 3.0 mm |
diameter implant made of titanium alloy. A 2.5 mm ball attachment has been added to the implant body. This implant is available with two different gingival cuff heights (2.0 mm and 4.0mm) and three different lengths (12.0 mm, 15.0 mm, and 18.0 mm). (Figs. 17A, 17B) A number of unique features are associated with this implant. Its square-thread pattern pattern provides better force distribution and stability than traditional V-shaped treads. The surface of this implant has been blasted with an apatitic blast medium such as (tri-calcium phosphate) to create a surface roughness, and then the surface has been cleaned and passivated with acid solution to produce the RBT surface. The female component is available in four different retention levels from softest to firmest (Green: extra soft retention, Yellow: Soft retention, Pink: medium retention, White: firm retention) (Fig. 17C) Having a parallel body provides more surface area compared to a tapered implant with a similar length and diameter. However, its apical |
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Volume 19.6 |