European Journal of Prosthodontics and Restorative Dentistry

Interface Dimensions of CEREC-3 MOD Onlays


Abstract - Evaluation was undertaken of the interface dimensions of MOD ceramic onlays fabricated using the Cerec 3 system. A master die was prepared on a maxillary second premolar Ivorine tooth from which 20 Cerec 3 onlays and 20 feldspathic onlays were made. A total of 80 cement analogues were produced using elastomeric impression material and sectioned orthogonally. Interface dimension was measured using Image Analysis Software. The ceramic onlays constructed using Cerec 3 demonstrated significantly larger cement lute space compared with laboratory produced feldspathic porcelain onlays with mean thickness of 201.3 ± 78.0 µm and 139.7 ± 49.7 µm respectively (P < 0.001). Large interface dimensions were particularly noted in the proximal boxes. The multiple variables involved in the construction of the Cerec onlays as well as the complexity of the onlay design may be contributing factors to the large cement space.

KEY WORDS: Interface dimension; Internal fit; ceramic restorations; MOD ceramic onlays; CAD-CAM; CEREC 3.


Wendy C Wang, Ailbhe McDonald, Aviva Petrie, Derrick Setchell

Articles from this issue

Title / DOI Access Page Start Page End Purchase
Surface Microhardness of a Nanofilled Resin Composite: A Comparison of a Tungsten Halogen and a Light-Emitting Diode Light Curing Unit, in vitro
no access 146 152 £10.00
The Extensively Restored Posterior Tooth has a High Incidence of Tooth Fracture
no access 153 158 £10.00
Influence of Condylar Guide Inclination on Condylar Positioning during Clenching
no access 159 164 £10.00
Assessing the efficacy of Denture Cleaners with Quantitative Light-Induced Fluorescence (QLF)
no access 165 170 £10.00
Colour Effects on Extracted Teeth After a Tooth Whitening Regime: Assessment in an Artificial Oral Cavity
no access 171 176 £10.00
Efficacy of Various Disinfecting Agents on the Reduction of Bacteria from the Surface of Silicone and Polyether Impression Materials
no access 177 182 £10.00
Interface Dimensions of CEREC-3 MOD Onlays
no access 183 189 £10.00
  • free access Free Access
  • no access No Access
  • full access Full Access