(a) The Pd4d valence states are fitted using two peaks due to

pd4dThe PD3DPD4D scaler tips are compatible with their DTE scaler handpieces and NSK orinal. PD3D: Used to level off the surface of endo during periodontal flapThe PD4D scaler tips are compatible with their DTE scaler handpieces and NSK orinal. PD4D: Can replace the traditional G reamer, used to prepare good endo