Usefulness of conventional glass ionomer cements in an environment of insufficient moisture exclusion
Source abstract
Abstract
PURPOSE: Moisture exclusion while treating dental caries can be challenging, and the glass ionomer cements (GICs) used for these procedures are susceptible to water. Few studies have examined the effects of the powder/liquid ratio (PLR) on the physical properties of GICs exposed to water. In this study, the hardness and thickness of the water-susceptible surface layer of three GICs were evaluated. METHODS: Three conventional GICs were mixed in increasing PLRs, and hardness over time was measured under conditions of no water exposure, distilled water exposure, and saliva exposure. Furthermore, the thickness of the water-susceptible layer for each GIC was determined. RESULTS: A water-susceptible layer of approximately 250 μm was evident for all GICs, and the thickness decreased with increasing PLR. GIC hardness increased with increasing PLR in conditions without water for all GIC types. Furthermore, the removal of the water-susceptible layer restored the physical properties of each GIC. CONCLUSION: Overall, the results indicate that conventional GIC restoration with the removal of the water-susceptible surface layer is a feasible strategy for treating dental caries in individuals for whom exclusion of moisture can be difficult.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Dental materials and restorations · Dental Health and Care Utilization · Endodontics and Root Canal Treatments
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Clinics of Dentistry for Disabled, Tohoku University Hospital, Tohoku University
Division of Dental Biomaterials, Tohoku University Graduate School of Dentistry
Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry
Funding
Ministry of Education, Culture, Sports, Science and Technology
References (34)
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