National Dental Assisting Examining Board (NDAEB) Practice Exam

What type of permanent cement is commonly used for cementing a stainless steel crown on a primary tooth due to its overall strength and nonirritating quality?

1. Glass ionomer cement

2. Polycarboxylate

3. Composite resin cement

4. Resin-modified glass ionomer

The correct answer is: Polycarboxylate

The most appropriate choice for cementing a stainless steel crown on a primary tooth, given the criteria of overall strength and nonirritating quality, is glass ionomer cement. Glass ionomer cement is specifically valued in pediatric dentistry due to its adhesive properties to both enamel and dentin. Its composition releases fluoride, which can help in the prevention of decalcification surrounding the crown, providing added protection for primary teeth that can be prone to cavities. Furthermore, glass ionomer cement exhibits good initial strength, which is crucial for maintaining the integrity of the crown, particularly in areas subject to masticatory forces. Its nonirritating nature makes it suitable for use in children, as it minimizes discomfort during placement and allows for a better overall experience in the dental setting. While polycarboxylate cement has been used in various dental applications, it does not provide the same level of fluoride release or bonding properties as glass ionomer cement. Similarly, composite resin cement is generally favored for permanent restorations due to its superior aesthetics and mechanical properties, but it may not be the best choice for primary teeth where strength and nonirritation are more critical. Resin-modified glass ionomer cement combines some of the beneficial properties of both resin and glass ionomer