1. Metal inlays: such as cobalt chromium inlays, gold alloy inlays, etc. These inlays usually have good mechanical properties and abrasion resistance, and are suitable for posterior teeth and other parts of the teeth that need to withstand a large occlusal force.
2. Resin inlays: relatively soft, easy to repair and polish, small abrasion on the teeth, suitable for patients with poor gum condition.
3. Porcelain inlays: such as cast porcelain inlays, with the color and translucency of natural teeth, good aesthetic performance, wear resistance is also stronger, is the ideal choice for the production of anterior inlays.
4. Zirconia inlays: similar to metal inlays, but with better color, higher hardness, and lower wear resistance, suitable for patients with higher requirements for aesthetics and strength.