Antagonist Enamel Wears More Than Ceramic Inlays
N. Krämer1,
K.-H. Kunzelmann2,
M. Taschner3,
A. Mehl2,
F. Garcia-Godoy4, and
R. Frankenberger3,*
1 Department of Pediatric Dentistry, University Medical Center Carl Gustav Carus, Technical University of Dresden, Fetscherstrasse 74, D-01307, Dresden, Germany;
2 Department of Operative Dentistry and Periodontology, City Centre University Clinics, University of Munich, Germany;
3 Dental Clinic 1 - Operative Dentistry and Periodontology, University Clinics, University Medical Center, University of Erlangen-Nuremberg, Glückstrasse 11, D-91054 Erlangen, Germany; and
4 Bioscience Research Center, College of Dental Medicine, 3200 South University Drive, Fort Lauderdale, FL 33328-2018, USA
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Figure 1. To determine ceramic wear, we applied the region-of-interest mask to the left lower second premolar (region-of-interest mask in Match 3D: left side). The borderlines of the inlay were controlled by visual inspection of the clinical photograph (here, eight-year recall).
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Figure 2. Matching 3D software difference image of the upper left second premolar (antagonist of Fig. 1 , left image after 6 yrs, right image after 8 yrs). Wear is visible as greyish areas (here at the palatal cusp as occlusal contact area).
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Figure 3. Boxplot chart of wear rates [µm] for ceramic inlays and corresponding antagonists after 4, 6, and 8 yrs of clinical service (n = 17). Differences are relative to the baseline investigation. Horizontal bars in boxes are medians; 50% of all values are within the boxes. The bars represent the complete range of values measured.
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