of a material often outweighs other considerations. This has contributed to a shift toward glass ionomer–based materials, particularly in patients with limited tolerance for complex procedures. The clinical effectiveness of glass ionomer materials depends on their ability to chemically bond to tooth structure. This adhesion is achieved through ionic bonding between carboxyl groups in the material and calcium ions in dentin and enamel. This mechanism underscores the importance of proper surface preparation and technique. Surface conditioning is a critical step in optimizing bond strength. Mild polyacrylic acid conditioners are used to remove the smear layer and increase surface energy, improving wetting and adhesion. These conditioners enhance bonding without removing the calcium ions necessary for chelation reactions. In contrast, phosphoric acid etchants used for composite resin should be avoided, as they can deplete calcium and compromise bonding. Technique Considerations The placement technique varies depending on the type of glass ionomer material used. Conventional glass ionomer cements and glass hybrid materials are typically placed using a bulk-fill approach and rely on chemical curing. The material should be allowed to flow into all areas of the preparation, with slight overfilling to ensure complete coverage and prevent any voids. In contrast, resin-modified glass ionomer cements require incremental placement, with each layer light-cured due to the presence of a resin component. Dentists should refer to the Instructions for Use for specific restorative products they are utilizing and follow manufacturer’s guidelines. Finishing and contouring should be approached conservatively, particularly in patients with cognitive impairment. Excessive manipulation can compromise the restoration and prolong treatment time. Whenever possible, clinicians should aim to achieve an acceptable contour without the need for rotary finishing. This approach reduces procedural stress and improves patient tolerance. For conventional glass ionomer cements and glass hybrid materials, protection during the initial setting phase is essential. These materials are highly sensitive to moisture changes immediately after placement. Exposure to saliva can weaken the matrix, while dehydration can lead to surface cracking or “crazing.” Applying a protective varnish (either self-cure or lightcured products commercially available) helps prevent both water uptake and loss, preserving the integrity of the restoration. Resin-modified glass ionomer cements, however, typically do not require varnish due to the effect of their resin component. Despite their advantages, glass ionomer materials are not without limitations. They exhibit lower strength and wear resistance compared to composite resin and amalgam, making them less suitable for load-bearing restorations. Aesthetic properties are also inferior, with reduced translucency and surface polish. These limitations highlight the importance of appropriate case selection. Patient Cooperation Managing patient cooperation is a critical aspect of care in frail older adults, particularly those with dementia who may experience behavioural and psychological symptoms that interfere with treatment. Minimizing sensory stimulation and adopting a gradual, stepwise approach to instrumentation can improve tolerance. For example, starting with spoon excavators and hand instruments first before proceeding to low-speed and high-speed rotary instrumentation serves as a behavioural test, allowing dentists to gauge what the patient can tolerate. The management of root caries in frail older adults requires a nuanced approach that integrates clinical evidence with practical adaptability. Glass ionomer– based materials offer advantages in this population due to their simplicity and reliability under challenging conditions. Ultimately, success depends not only on the choice of material but also on tailoring techniques to the patient’s functional status and tolerance. See Dr. Nicholas Tong’s presentation on treating root caries in frail older adults on CDA Oasis: bit.ly/4pL1Sgy Managing patient cooperation is a critical aspect of care in frail older adults, particularly those with dementia who may experience behavioural and psychological symptoms that interfere with treatment. 29 Issue 4 | 2026 | Issues and People
RkJQdWJsaXNoZXIy OTE5MTI=