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ePaper created 2016-11-23, 14:26:06 | version 1.38.0
case report | 17 4 2016 implants important. The metal bar on the model with the gin- givalmaskcanbeseenonFigure17.Thedrilljustshows the position of the provisional auxiliary implant. The bar is extended far into the vestibular area to afford static support among the rows of teeth (Fig. 18). ThePEEKframeworkbeforecompletionisdepicted onFigures19and20.Figure21showsthePEEK-frame when placed on the milled bar. Low Shrinkage The secret behind the completion of PEEK-based products is making sure that the plastic is subjected to a minimum of polymerisation-shrinkage during completion. For this purpose, the author uses polymers with a more flour-like grinding, such as FuturaGen® by Mani Schütz Dental. Furthermore, the monomer is less likely to become subject to shrinkage than other monomers and does not tend to discolour. The minimal shrinkage furthermore causes a much lower stress for the implants and is therefore especially preferable for immediate loading. Conditioning the surface PEEK For a stable bond between PEEK and plastic, the author applies a bonding such as Dialog Bonding- Liquid®, Mani.Schütz Dental. Figure 22 shows the fin- ished prosthesis in different views. In an oblique lingual view, the polished transitions between the prosthesis plastic and PEEK-framework canbeidentified(Fig.22a).Thethinlingualcoverings ofthisdesignallowsenoughspaceforthetongueand areperfectlyfunctionallyadapted.Afterbeingplaced on the model, the edges close cleanly and tightly (Fig. 23). According to our instructions, the unit was conditioned with acrylic before finishing and first covered with a pink opaquer (Fig. 24). The notches in the model show the position of guides for the sili- cone key._ Fig. 24 Fig. 22a Fig. 23 Fig. 22b Figs. 22a & b: The finished prosthesis in different views; the obliquely- lingual view shows the polished transitions between the prosthesis plastic and PEEK-framework. Fig. 23: After being placed on the model, the edges close cleanly and tightly. Fig. 24: The unit was conditioned with plastic before finishing and pretreated with pink opaque. contact Dr Rolf Vollmer 1st DGZI Vice President and Treasurer Nassauer Str. 1 57537 Wissen, Germany Tel.: 02742 968930 Fax: 02742 2547 info.vollmer@t-online.de Dr Patricia Wieschollek c/o Dr Rolf Vollmer Nassauer Str. 1 57537 Wissen, Germany Patricia.wieschollek@web.de ZTM Michael Anger Expert in Dental Prosthetics – DGZI Drususstraße 8 53424 Remagen, Germany info@ma-fraeszentrum.de Author details Author details Author details 42016 Tel.: 02742968930 Fax: 027422547