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Biomedical subjects

K Wiedhahn

Publications and source records attributed to K Wiedhahn.

11 recordsLinked to original sources
PubMed2005

Cerec 3D veneers with R2005--veneers à la carte.

Before the introduction of version R1800, only CORRELATION was available to the Cerec user for veneer design, and recourse had to be taken to the earlier Cerec 3 program for constructive veneer production. The software R1800 now also makes a tooth database available for veneers and allows copying and free insertion of any acquired tooth forms. With the R2005 version, the editing possibilities for designing veneers were further optimized; copying, mirroring and insertion of crowns were also facilitated. The situation-related selection of the CORRELATION design method, DENTAL DATABASE, and REPLICATION are described and assessed by reference to clinical situations.

Ceramics↗
PubMed2005

Clinical long-term results with 617 Cerec veneers: a nine-year report.

There are no long-term clinical studies concerning the treatment outcome of CAD/CAM generated porcelain laminate veneers. The objective of this study was to conduct a longitudinal evaluation of CAD/CAM fabricated porcelain laminate veneers. A single practitioner placed 715 CAD/CAM generated porcelain laminate veneers produced chairside with the Cerec system on 307 patients between December 1989 and December 1997. 260 patients with 617 veneers were available for recall examination. Forty-seven patients with 98 veneers (13.7%) were unable to be located or return for recall examination. Fourteen restorations had been lost. The Kaplan-Meier survival rate was 94% after up to 9 years (95% confidence interval: 90.7 to 97.8%). Of the surviving restorations, 98% were classified as clinically acceptable after 9 years. 97.3% of the teeth examined tested vital, 96.2% of the veneers were asymptomatic since their production, 98.8% of the veneers were considered successful by the patient. CAD/CAM veneers fabricated with the Cerec System achieved comparable long-term clinical results to those reported for laboratory processed porcelain laminate veneers. The high survival rate and favorable clinical results would support the use of CAD/CAM porcelain laminate veneers in clinical situations similar to those for laboratory processed porcelain veneers. CAD/CAM generated porcelain laminate veneers may provide equally good clinical results and longevity as conventional laboratory-processed porcelain laminate veneers.

Acid Etching, Dental↗
PubMed2003

Chairside multi-unit restoration of a quadrant using the new Cerec 3D software.

The new Cerec 3D design software for inlays and partial and full crowns simplifies work when producing several restorations in one session. Quite significant progress has been achieved, in that the entire row of teeth of a quadrant can be acquired completely and displayed by successively overlapping optical impressions. The digital working model of a quadrant in which all preparations are acquired is the result. The restorations can be designed individually and inserted virtually. Thanks to virtual insertion, the proximal contacts to neighboring restorations can be designed perfectly and all restorations finally designed, milled, and inserted in one sitting. This method provides a significant rationalization effect.

Adult↗
PubMed2001

"Function" with registration: simple, fast, and safe using a new registration material.

Although the Function construction method with Cerec 2 always remained a method for enthusiastic experts, Cerec 3 enables the practiced "normal user" to use this method expediently. With the new R-Sl-LINE Metal-Bite registration material, an important step towards accelerating the process has been taken by eliminating a powder sequence and by its fast curing. Due to the special definition properties of the material, including the antagonist situation in the design of the occlusion has become considerably more reliable.

Computer-Aided Design↗