Overview
ISO 9917-1:2007 - Dentistry - Water-based cements - Part 1: Powder/liquid acid‑base cements specifies requirements and test methods for powder/liquid acid‑base dental cements intended for permanent cementation, lining and restoration. The standard covers both hand‑mixed and capsulated (mechanically mixed) formulations and defines performance limits and test procedures that manufacturers and test laboratories use to demonstrate conformity. Resin‑modified water‑based cements are intentionally excluded.
Key topics and technical requirements
ISO 9917-1:2007 focuses on material classification, specimen preparation, testing and labelling. Major technical topics include:
- Chemical types covered: zinc phosphate, zinc polycarboxylate and glass polyalkenoate cements (and other acid‑base water‑based cements when equivalence is claimed).
- Applications classified as luting (cementation), bases/lining, or restoration - with different performance limits for each application.
- Mandatory test methods and annexes:
- Net setting time (Annex A)
- Film thickness for luting cements (Annex C)
- Compressive strength (Annex D)
- Acid erosion (Annex E)
- Optical properties for polyalkenoate restorative cements (Annex F)
- Determination of acid‑soluble arsenic and lead (Annex G)
- Radio‑opacity (Annex H)
- Material quality checks: visual inspection of powder and liquid, homogeneity of unset cement, and preparation under controlled laboratory conditions (23 °C ±1 and 50 % ±10 % RH for many tests).
- Packaging and labelling: requirements for manufacturer identification, batch number, shade information, expiry, designation of opacity and radio‑opacity, and capsule content.
- Manufacturer instructions: specific mixing ratios, mixing and working times, recommended mixing tools and temperatures, finishing times, and guidance on protective coatings - different requirements for hand‑mixed vs. encapsulated cements.
Practical applications
ISO 9917-1:2007 is used to:
- Certify and benchmark dental cements for clinical use (luting, lining, restorative).
- Provide standardized test procedures for R&D, quality control and batch release testing.
- Support product claims such as radio‑opacity or shade matching for restorative glass polyalkenoate cements.
- Guide clinicians and dental technicians on handling, mixing and storage information supplied by manufacturers.
Who should use this standard
- Dental materials manufacturers and product developers
- Independent dental materials test laboratories
- Regulatory and conformity assessment bodies
- Dental clinicians, prosthodontists and dental technicians assessing material suitability
Related standards
Keywords: ISO 9917-1:2007, dental cements, water-based cements, powder/liquid, acid-base cements, luting cement, glass polyalkenoate, net setting time, film thickness, compressive strength, radio-opacity.
