PM1 - 1/4 Round Diamond Preparation Tip: Diamond-coated 76µm. First instrument of the ultrasonic sequence, following the rotary phase. Intrasulcular dentin preparation and positioning of finishing line.
PM2 - 1/4 Round Diamond. Finishing Tip: Diamond-coated 46µm. Correction of irregularities in the finish line and start of polishing. Its diamond coating, less dense than on the PM1, makes it possible to obtain a cutting edge finish.
PM3 - 1/4 Round Smooth Polishing Tip: Smooth. This entirely smooth instrument is last in the finishing sequence, improving the condition of the surface at the cervical limit before impression taking.
PM4 - 1/4 Conical Diamond Corono-radicular Prep. tip:Conical, diamond-coated 46µm. After the rotating phase the PM4 tip is used to:
• Prepare the upper 1/3 of canal chamber.
• Shape anatomically the connection cone.
• Clean the root walls.
• Smooth the entry cones for the anatomical posts.