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Dental bridges glass-ceramics

These glass-ceramics represent highly specialized materials in which the different sophisticated properties mentioned have been developed. Therefore, they are highly refined tailor-made products. Furthermore, the fabrication technique has also been optimized. This measure was necessary because patients have different requirements, and dental restorations (e.g., inlay, crown, or bridge) must be suited exactly to the clinical situation. As a result, special techniques were developed that can be applied in the dental laboratory. [Pg.278]

The IPS EMPRESS glass-ceramic is used worldwide to fabricate inlays, onlays, anterior and posterior crowns, and veneers. The material is not recommended for fabricating multi-unit dental bridges. Figure 4-34 shows four IPS EMPRESS inlays/onlays in a clinical situation. The clinical results of a six-year study show that the failure rate is approximately 2-3%. Most of the problems experienced thus far have been traced to preparation errors. An outline of the clinical results is presented by Brodbeck (1996). IPS EMPRESS is produced by Ivoclar Vivadent AG (Liechtenstein). [Pg.286]

Some dental technicians choose to apply an additional veneer to the shoulder region of dental crowns and bridges. As a result, metal is no longer visible in the gingival region. Thus the metal is optimally masked. This tedmique requires that the shoulder material from the additional assortment of glass-ceramics be applied prior to the sintering of dentin and incisal materials. [Pg.305]

In terms of quantity, the incisal and dentin materials comprise the largest part of the apatite-leucite glass-ceramics of the IPS d.SIGN system. Their microstructure and properties are described in Section 2.4.6. The main applications of these glass-ceramics include dental crowns and multi-unit bridges. [Pg.305]

Wear characteristics are a particularly important property of dental materials, as these materials should not damage natural teeth. Some dental ceramics have been shown to be highly abrasive to antagonist natural tooth structure. Sorensen et al. (1999) examined this issue in the course of a six-month clinical study. Eight three-unit premolar bridges (of pressed glass-... [Pg.294]


See other pages where Dental bridges glass-ceramics is mentioned: [Pg.273]    [Pg.278]    [Pg.281]    [Pg.291]    [Pg.292]    [Pg.295]    [Pg.300]    [Pg.471]    [Pg.301]    [Pg.283]   
See also in sourсe #XX -- [ Pg.305 , Pg.306 ]




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