Oklahoma Pit and Fissure Sealants State Practice Exam

What is a common disadvantage of using glass ionomer in sealants?

1. High cost

2. Fragility

3. Lack of fluoride release

4. Poor aesthetics

The correct answer is: Fragility

The mention of fragility as a disadvantage of using glass ionomer in sealants is accurate. Glass ionomer materials tend to be less durable and more susceptible to wear compared to other materials, such as resin-based sealants. This fragility can lead to a higher chance of abrasion and chipping over time, diminishing their effectiveness in protecting the tooth surface against caries. While glass ionomers do have some aesthetic limitations, especially in comparison to more tooth-colored materials, it is primarily their physical property of fragility that presents a significant concern for their long-term application as sealants. The wear resistance and structural integrity of the sealant material are crucial in ensuring ongoing protection for the pits and fissures on the tooth surface, making fragility a notable disadvantage.