ISO/TS 17988:2020 PDF

Name: ISO/TS 17988:2020 — Dentistry — Corrosion test methods for dental amalgam
SKU: ISO/TS 17988:2020
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Dentistry — Corrosion test methods for dental amalgam

Название (английский):

ISO/TS 17988:2020

Dentistry — Corrosion test methods for dental amalgam

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 30
Дата публикации:: 20 марта 2020 г.
Издание:: ISO TS 17988 edition 2 version 1
ICS:: 11.060.10

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Описание (английский):

This document gives the details of test procedures for evaluating the corrosion resistance of dental amalgam formed from products that are within the scopes of ISO 24234 and ISO 20749. This document is not applicable to other metallic materials in which an alloy powder reacts with a liquid alloy to produce a solid metallic material intended for dental restoration.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/TS 17988:2020 - Dentistry - Corrosion test methods for dental amalgam - provides detailed laboratory procedures for evaluating the corrosion resistance of dental amalgam. The technical specification defines three accelerated, comparative test methods (immersion, potentiostatic and Hertzian-loading strength‑reduction) intended to produce measurable differences between dental amalgam products within a short time. The scope covers amalgam products within ISO 24234 and ISO 20749 and excludes other metallic restorative materials produced by reactive alloy powder/liquid systems. Results are for comparative performance evaluation and are not appropriate as biocompatibility claims.

Key topics and technical requirements

Test methods: Three principal procedures are specified:

Immersion test - evaluates metal ion and mercury vapour release during exposure to defined solutions.
Potentiostatic test - uses electrochemical control (potentiostat) to quantify charge transport and corrosion behavior.
Hertzian‑loading strength‑reduction test - combines mechanical loading with corrosive exposure (artificial saliva) to assess strength loss.

Test‑piece preparation:

Cylindrical test‑pieces for immersion and potentiostatic tests; disc‑shaped test‑pieces for Hertzian tests.
Detailed instructions on mixing, moulds, packing, finishing and conditioning to ensure repeatability.

Reagents and solutions:

Specified reagents and preparations (e.g., 0.1 mol/L lactic acid for immersion; defined artificial saliva formulation for Hertzian testing).

Apparatus and instrumentation:

Requirements for corrosion cells, temperature control, potentiostat, reference electrode probe, mercury vapour analyser, coulometer or data‑logging systems.

Sampling, data processing and reporting:

Procedures for sampling, cleaning, assembly of test apparatus, data acquisition, calculation of total charge transported and standardized test reports.

Limitations:

Designed for comparative laboratory evaluation; explicitly not for biocompatibility claims.

Applications and who uses it

ISO/TS 17988:2020 is directly applicable to:

Dental materials manufacturers - to benchmark corrosion resistance during product development and quality control.

Testing laboratories and conformity assessors - for standardized evaluation of amalgam corrosion performance.

Regulatory agencies and standards bodies - to interpret comparative corrosion data for product dossiers.

Dental researchers and academic labs - to compare new alloy formulations and study degradation mechanisms. Practical outcomes include optimized alloy formulations, controlled production tolerances, and reproducible corrosion performance data for regulatory and product comparison purposes.

Related standards

ISO 24234 and ISO 20749 - product standards referenced in the scope (amalgam product definitions and requirements).

Prepared by ISO/TC 106 (Dentistry); consult these related standards when implementing ISO/TS 17988:2020 to ensure full compliance with product scope and sampling requirements.

Keywords: ISO/TS 17988:2020, dental amalgam, corrosion test methods, corrosion resistance, potentiostatic test, immersion test, Hertzian-loading, artificial saliva, mercury vapour analyser, dental materials testing.

ISO/TS 17988:2020 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses it

Related standards

Технические детали

BS EN ISO 24234:2015

Dentistry. Dental amalgam.

SIST EN ISO 20749:2023

Dentistry - Pre-capsulated dental amalgam (ISO 20749:2023)

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