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Copy of metal free ceramics/ dentistry work

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Indian Dental Academy: will be one of the most relevant and exciting

training center with best faculty and flexible training programs

for dental professionals who wish to advance in their dental

practice,Offers certified courses in Dental

implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic

Dentistry, Periodontics and General Dentistry.

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  • We’ve talked about the differences in material --- but the next question is how do these differences manifest themselves clinically? <br /> The difference we see comes in: <br /> Marginal Fit: <br /> In a market research study, we found that marginal fit is the most important criteria to doctors. <br /> 3M and others have performed numerous studies on fit. The studies have found that Lava consistently performs high on marginal fit. <br /> 2. Strength and Long Term Stability: <br /> We have found flexural strengths of Lava zirconia to be very high – as high in some cases as 1400 MPa and consistently higher than 1000 MPa. However, many of the competitive zirconias are able to produce high initial flex strengths as well, so the gap is narrowing. <br /> What is even more important than the initial flex strength, is the LONG-TERM STABILITY of the material. <br /> 3M has 5-yr. Clinical studies that show 100% survival rate. <br /> And finally- the translucency of the material. Lava zirconia shows natural translucency and unmatched esthetics.Additionally, Lava is unique with a patented substructure shading system producing 8 shades, which further increase the final esthetics. <br /> [1] 0828 In-Vitro Vertical Marginal Gap Comparison of CAD/CAM Zirconium Copings <br /> A.J.T. SHANNON, F. QIAN, P. TAN, and D. GRATTON, University of Iowa, Iowa City, USA <br /> [2] 3M ESPE Lava showed the lowest marginal and absolute marginal gap in comparison to Cercon and DCS <br /> A. Piwowarczyk, H.-C. Lauer (2006), Determining the marginal fit of CAD/CAM bridge frameworks, Pan European Federation Conference (PEF; CED) #0254 <br /> [3] Lava 3-unit bridges showed smallest Marginal gap v. Etkon, Cercon brain, CerecInlab <br /> F. Beuer, T. Fischer, K.-J. ERdelt, H.-U. Aggstaller, K. Spiegl, W. Gernet; (2005) IADR #1336 and In vitro Study Marginal fit of Lava restorations; F. Beuer, T. Fischer, K.-J. ERdelt, H.-U. Aggstaller, K. Spiegl, W. Gernet, industrial report (2006) <br /> [4] Key Group Study, October 2006, “Accuracy of fit” listed as #1 out of 16 possible attributes. 134 total doctor responses <br /> [5] 3M ESPE Internal 3 pt- Bending Test – ISO 6872, July/September 2005 <br /> [6] 3-unit posterior bridges, Start 2000, P. Pospeich, University of Homburg, Homburg <br />
  • There are differences in substructure shading systems. <br /> The Lava shading system is based on a patented chemical process. <br /> Lava substructures are available in 8 shades and use a patented chemical process which results: <br /> A uniform coloring of the framework, <br /> Less influence to translucency, <br /> Show little or no reduction in strength with colored substructures. <br />
  • Crowns (anterior and posterior) <br /> Splinted crowns (up to 4 abutments) <br /> All possibilities of 3- and 4-unit bridges <br /> 5- and 6-unit bridges (max. 2 pontics in posterior region, max. 4 pontics in anterior region) <br /> Inlay bridges <br /> Maryland bridges <br /> Cantilever bridges (with the pontic maximally on the second premolar (OOX, OXOX, OOOX) <br /> Primary copings <br />