Consensus on glass-ionomer cement thresholds for restorative indications

Maria Fidela de Lima Navarro, Renata Corrêa Pascotto, Ana Flávia Sanches Borges, Carlos José Soares, Daniela Prócida Raggio, Daniela Rios, Eduardo Bresciani, Gustavo Fabián Molina, Hien Chi Ngo, Ivana Miletić, Jo Frencken, Linda Wang, Rafael Menezes-Silva, Regina Maria Puppin-Rontani, Ricardo Marins de Carvalho, Sevil Gurgan, Soraya Coelho Leal, Tamer Tüzüner, Ticiane Cestari Fagundes, John William NicholsonSharanbir Kaur Sidhu

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Objective: The aim of this paper is to present the results of a consensus meeting on the threshold property requirements for the clinical use of conventional glass-ionomer cements (GICs) for restorative indications. Methods: Twenty-one experts on GICs evaluated the results of tests on mechanical and optical properties of 18 different brands of restorative GICs: Bioglass R [B], Chemfil Rock [CR], Equia Forte [EF], Gold Label 2 [GL2], Gold Label 9 [GL9], Glass Ionomer Cement II [GI], Ionglass [IG], Ion Z [IZ], Ionomaster [IM], Ionofil Plus [IP], Ionostar Plus [IS], Ketac Molar Easymix [KM], Magic Glass [MG], Maxxion R [MA], Riva Self Cure [R], Vidrion R [V], Vitro Fil [VF] and Vitro Molar [VM]. All experiments were carried out by a team of researchers from Brazil and England following strict protocols, under the same laboratory conditions throughout, and maintaining data integrity. Results: There was consensus on: determining as primary properties of the material: compressive strength, microhardness, acid erosion and fluoride release, and as secondary properties: contrast ratio and translucency parameter, in order to rank the materials. Seven brands were below the thresholds for restorative indications: IZ, IM, IG, MA, VF, B and MG. Conclusions: Based on the primary properties adopted as being essential for restorative indications, the conventional restorative GICs that met the thresholds and could be considered suitable as long-term restorative materials were: EF, GI, GL9, KM, IP, GL2, IS, CR, V, VM and R. A decision-making process to select the best GIC must also include results from clinical trials. Clinical significance: This study provides a ranking of GICs that could be considered suitable as long-term restorative materials based on their main properties.

Original languageEnglish
Article number103609
JournalJournal of Dentistry
Publication statusPublished - Apr 2021


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