Air polishing system for the thorough and efficient removal of soft deposits and stains without changing the handpiece. Powder, handpiece and spray heads work together to allow efficient and atraumatic supragingival and subgingival cleaning. Practical adjustment ring for simple switching between prophylaxis and periodontal treatments. Optimally bundled powder jet for controlled spray pattern and less powder emission. Spray attachments with different angles and in different lengths for optimal access. Special periodontal accessories for thorough treatment of deep pockets. Clear powder container with lateral opening for easy refilling and simple checking of powder level. Handpiece can be simply wipe-disinfected, and removable spray heads are thermowasher disinfectable and sterilisable.