ISO/TS 16506:2017

Overview

ISO/TS 16506:2017 - Dentistry: Polymer-based luting materials containing adhesive components specifies test methods and information for evaluating the bond strength to dentine and the physical and chemical performance of polymer-based luting materials that include adhesive components. The document covers materials supplied for mechanical or hand mixing (including auto-mixing tips), self-curing, external-energy activation (light cure), or non-mixing for external-energy activation. It applies to luting/cementation of restorations-such as inlays, onlays, veneers, posts, crowns and bridges-but excludes non-adhesive polymer luting materials (see ISO 4049) and materials intended for veneering sub-frames (see ISO 10477).

Key topics and requirements

ISO/TS 16506:2017 provides standardized test methods and performance information rather than numeric pass/fail limits. Major technical topics include:

• Classification of materials: self-cure, external-energy-activated (light-cure), and dual-cure.
• Bond strength to dentine - procedures and informative annexes for shear bond testing.
• Physical and chemical performance tests, including:
  • Film thickness
  • Working time and setting time
  • Sensitivity to ambient light and depth of cure
  • Flexural strength
  • Water sorption
  • Colour stability
  • Radio-opacity
• Sampling and specimen preparation guidance for laboratory testing.
• Packaging, marking, and user information requirements for manufacturers.
• Informative annexes with test jigs and compiled performance data (Annex A–C).
• References to biocompatibility guidance (ISO 10993-1, ISO 7405) and laboratory utilities (e.g., ISO 3696 for water).

Note: ISO/TS 16506 does not set limit values for bond strength or other properties; Annex C offers data to assist interpretation and future standardization.

Applications and users

ISO/TS 16506:2017 is intended for:

• Dental materials manufacturers developing or validating adhesive luting cements.
• Independent testing laboratories performing standardized performance evaluations.
• Regulatory bodies and conformity assessors reviewing test data for market approval.
• Research institutions studying bond behaviour to dentine and material durability.
• Product designers and quality assurance teams needing test methods for claims on working time, cure depth, mechanical properties, and clinical handling.

Using ISO/TS 16506 helps ensure consistent, reproducible laboratory evaluation of polymer-based luting materials and supports product development, regulatory submissions, and comparative performance assessments.

Related standards

• ISO 4049 (polymer-based restorative materials)
• ISO 10477 (veneer materials)
• ISO 10993-1, ISO 7405 (biocompatibility)
• ISO 1942 (vocabulary), ISO 3696 (water), ISO 7491 (colour stability), ISO 13116 (radio-opacity)
• ISO/TS 11405 (adhesion testing terminology)

Keywords: ISO/TS 16506:2017, polymer-based luting materials, adhesive luting agents, bond strength to dentine, dental cement, test methods, ISO dentistry.