How to find the right Dental Mandrels AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Dental Mandrels
- Shank type
- HP (straight handpiece) and RA (latch-type contra-angle) both use a 2.35 mm shank. RA has a latch groove and is much shorter. FG friction-grip mandrels are 1.6 mm. A mandrel that does not match your handpiece chuck will not seat, or will spin loose.
- Disc attachment
- Match the mandrel to the disc's hub: screw-head mandrels for discs with a plain hole, and the system's own snap-on or pop-on mandrel for snap-hub discs. Snap discs from one system often do not lock securely on another system's mandrel.
- Concentricity
- Choose stainless-steel mandrels that run true. Discard any that is bent or wobbles. Runout causes chatter, uneven finishing and disc breakage.
- Autoclavability
- For clinical use, choose stainless mandrels rated for sterilization. Mandrels are reused between patients, while the discs are single-use.
Brands that matter
- 3M: Makes the pop-on mandrels required for Sof-Lex discs.
- Shofu: Makes the mandrels for its Super-Snap disc system.
- Komet: Offers HP and RA screw mandrels for its lab discs.
- Renfert: Offers lab mandrels for its separating discs.
What to avoid
- Mixing snap-disc systems and mandrels from different brands.
- Bent or corroded mandrels, which wobble and break discs.
Questions
Do I need a different mandrel for each disc brand?
For snap or pop-on disc systems, usually yes. Screw-type mandrels are far more interchangeable across discs with a plain centre hole.