National Dental Assisting Examining Board (NDAEB) Practice Exam

Which luting cement is noted for its high level of biocompatibility?

1. Resin cement

2. Glass ionomer cement

3. Composite cement

4. Polycarboxylate cement

The correct answer is: Glass ionomer cement

Glass ionomer cement is recognized for its high level of biocompatibility due to its chemical composition and interactions with dental tissues. It releases fluoride, which not only helps in remineralization of tooth structures but also has therapeutic benefits for the surrounding oral tissues. The gentle nature of glass ionomer cement makes it less irritating to the dental pulp compared to some other types of cements, and it bonds well to both enamel and dentin, further enhancing its compatibility with biological tissues. In dental applications, biocompatibility is crucial, especially in areas where the cement will be in direct contact with the periodontal tissue or subgingival structures. The properties of glass ionomer cement, including its ability to adhere to moist environments and its thermal expansion resembling that of natural tooth structures, contribute to its favorable performance in clinical settings. Other cements, while useful for various applications, may not exhibit the same level of biocompatibility or benefits related to fluoride release. For instance, resin cements are often chosen for their aesthetic qualities and strength but can sometimes pose a greater risk of irritation to the pulp if not placed correctly. Composite cements also offer aesthetic advantages but lack the unique biological interactions that glass ionomer cement provides. Polycarboxylate cement