An implant scaler 204S is a specialized dental instrument used for removing plaque and calculus from dental implants, particularly in posterior (back) regions. The "204S" refers to the specific sickle scaler design, which has a double-ended, angled, and curved working end for effective cleaning of interproximal (between teeth) surfaces. A key feature of implant scalers like the 204S is that they are made from materials softer than titanium, such as solid titanium or have a titanium coating, to prevent scratching or damaging the implant surface. This is critical for maintaining the health of the implant.