Table 1.
Dental MRI compatibility of dental materials at 1.5 T. Compatible: |Δχ| < 3 ppm, the material can be present in the tooth of interest; compatible I: 3 < |Δχ| < 200 ppm, the material should not be present in the tooth of interest or its neighbours or antagonists; non-compatible: |Δχ| > 200 ppm, the material should not be present in the mouth
| Material | Function and composition | Manufacturer | dMRI compatibility |
| AH Plus resin | Two-component paste/paste root canal sealer based on epoxy-amine resin | Dentsply (Maillefer, Germany) | Compatible |
| Amalgam | Dental restorative material consisting of about 50% liquid mercury by weight and 20–35% powdered silver, with the remainder comprising tin, copper, zinc and other metals | Degussa (Frankfurt, Germany) | Compatible I |
| CoCr | Alloy with the appoximate composition of 60% Co, 25% Cr, 10% Ni, 5% Mo and 0.3% C used in both orthodontics and prosthetic dentistry | Amann Girrbach (Koblach, Austria) | Non-compatible |
| Composites | Synthetic resins composed of a soft organic matrix and hard inorganic fillers (silica) cured by photopolymerization and used as restorative material or adhesives; inorganic oxides and organic compounds (most commonly, iron oxides) are added as pigments to create a range of various composite shades | 3M ESPE (Seefeld, Germany) – Filtek Supreme XT Universal, Filtek Supreme XT Flowable, Filtek Z250, Filtek P60 Posterior Restorative, shades A3, B3, C3 |
Compatible |
| Ivoclar Vivadent (Ellwangen, Germany) – Tetric Ceram and Tetric Flow, shades A1–A4, B3, C3, D3, transparent, bleach |
Compatible I | ||
| Glass ionomer cement | Dental restorative material based on the reaction of silicate glass powder and polyalkenoic acid used for filling teeth and luting cements | 3M ESPE | Compatible |
| Gold alloy | The oldest dental restorative material, containing, for example, 85.6% gold, 12.7% platinum, 0.2% iridium, 0.1% rhodium and traces of indium, zinc, titanium, iron | DeguDent (Hanau, Germany) | Compatible I |
| Gold–ceramic crown | Porcelain-fused-to-metal crown with the use of a gold alloy | DeguDent | Compatible I |
| Gutta-percha | Rubber-like coagulated juice of tropical trees used for temporary sealing of dressings in cavities and for filling root canals in endodontics | Demedi-Dent (Dortmund, Germany) | Compatible |
| Titanium alloy | Alloy with 6% Al and 4% V or in pure form used as a dental implant material | Friadent (Mannheim, Germany) | Compatible I |
| Zirconium dioxide | High strength and hardness ceramic material used for production of CAD/CAM restorations and implants | Metoxit (Thayngen, Switzerland) | Compatible |
| Orthodontic wires | |||
| NiTi alloy wire | Used in orthodontics to maintain existing dental positions or to straighten teeth | Dentaurum (Ispringen, Germany) | Compatible I |
| Stainless steel wire | Dentaurum | Non-compatible | |
| Stainless steel brackets | Dentaurum | Non-compatible | |
CAD, computer-aided design; CAM, computer-aided manufacturing.