Overview
ISO 13295:2007 - "Dentistry - Mandrels for rotary instruments" specifies requirements, packaging and marking for mandrels used with discs and polishers in dental rotary work. The standard defines mechanical classes, material and dimensional requirements, testing references and minimum labelling information. It uses the coding system of ISO 6360 for identification of dental rotary instruments.
Key Topics and Requirements
- Scope: Applies to mandrels suitable for dental discs and polishers; mandates use of ISO 6360 coding for identification.
- Classification: Five types are defined for different applications:
- Type 1 - standard mandrel
- Type 2 - reinforced mandrel
- Type 3 - mandrel with cylindrical thread (for unmounted polishers)
- Type 4 - mandrel with conical thread (for unmounted polishers)
- Type 5 - snap-fit mandrel for polishers
- Material strength:
- Types 1–4 and associated screws: minimum proof strength (Rp0.2) of 600 MPa (manufacturer selects material/treatment).
- Type 5: minimum Vickers hardness of 250 N/mm².
- Dimensions and tolerances: Detailed dimensional requirements are specified (figures in the standard). Standard plate/screw-head diameter is 5 mm (other diameters allowed by agreement).
- Testing references:
- Mechanical (proof strength) testing per ISO 6892 (tensile testing).
- Dimensional and run-out testing per ISO 8325.
- Marking and labelling: Package labelling must include:
- Manufacturer/trademark and lot number
- Shank type (per ISO 1797-1), ISO 6360 general and specific codes where applicable
- Plate diameter (if applicable)
- Packaging: Left to manufacturer’s discretion, subject to labelling rules.
Applications and Who Uses It
- Dental manufacturers of mandrels, discs and polishers use ISO 13295:2007 to ensure interchangeability and safety of rotary accessory components.
- Dental laboratories and clinics rely on standardized mandrels for predictable fit, performance and compatibility with handpieces and rotary systems.
- Regulatory, procurement and quality assurance teams reference the standard when specifying or accepting mandrels and polishing systems.
- Designers and R&D teams use the dimensional and mechanical requirements when developing new rotary accessories.
Related Standards
- ISO 6360 - Number coding system for rotary instruments (identification)
- ISO 1797-1 - Dental rotary instrument shanks
- ISO 6892 - Metallic materials - Tensile testing
- ISO 8325 - Test methods for rotary instruments
- ISO 1942 - Dentistry vocabulary
Keywords: ISO 13295:2007, mandrels, dental mandrels, mandrels for rotary instruments, dentistry, ISO 6360, proof strength, Vickers hardness, ISO 1797-1, ISO 8325.
