Which cement is considered the worst for a deep restoration?

Which cement is considered the worst for a deep restoration?

• A. Glass ionomer
• B. Zinc phosphate
• C. Resin cement
• D. Calcium silicate

Answer: (B)

Zinc phosphate cement is considered the worst choice for deep restoration due to its properties. This type of cement has a relatively high level of acidity upon mixing, which can be detrimental to the dental pulp and surrounding tissues, particularly in deeper restorations where there is less dentin and more risk of irritation. Its adhesion properties are also less robust compared to resin-based materials, making it less reliable for maintaining the integrity of a restoration over time. Furthermore, zinc phosphate does not have the same level of esthetic integration or the ability to bond to composite materials, which can be crucial in deep restorations where aesthetics and durability are important. While it is a traditionally used cement with good mechanical strength, its limitations in sensitivity to pulpal health and bonding contribute to it being the least favorable option in these clinical scenarios. In contrast, glass ionomer and resin cements provide better adhesion and release fluoride, which can be beneficial for tooth health, especially in deeper restorations. Calcium silicate cement is also known for its biocompatibility and ability to promote regeneration, making it a more favorable option as well.

Zinc phosphate cement is considered the worst choice for deep restoration due to its properties. This type of cement has a relatively high level of acidity upon mixing, which can be detrimental to the dental pulp and surrounding tissues, particularly in deeper restorations where there is less dentin and more risk of irritation. Its adhesion properties are also less robust compared to resin-based materials, making it less reliable for maintaining the integrity of a restoration over time.

Furthermore, zinc phosphate does not have the same level of esthetic integration or the ability to bond to composite materials, which can be crucial in deep restorations where aesthetics and durability are important. While it is a traditionally used cement with good mechanical strength, its limitations in sensitivity to pulpal health and bonding contribute to it being the least favorable option in these clinical scenarios.

In contrast, glass ionomer and resin cements provide better adhesion and release fluoride, which can be beneficial for tooth health, especially in deeper restorations. Calcium silicate cement is also known for its biocompatibility and ability to promote regeneration, making it a more favorable option as well.