Final answer:
ZOE (Zinc Oxide Eugenol) is used in dentistry for its sedative, antibacterial, and sealing properties. Its low solubility in oral fluids increases its durability, but its brittleness and incompatibility with composite materials and allergic patients are limitations.
Step-by-step explanation:
Properties of ZOE (Zinc Oxide Eugenol)
Zinc Oxide Eugenol (ZOE) is a versatile material commonly used in dentistry with distinct physical and chemical properties. ZOE has sedative properties that promote healing and is well-regarded for its therapeutic effects on dental tissues. Additionally, ZOE provides an excellent seal which makes it a preferable choice for temporary fillings, root canal therapies, and as a base under restorations. The antibacterial properties of ZOE contribute to its effectiveness in reducing secondary caries. Furthermore, the material has low solubility in oral fluids, contributing to its longevity as a dental material. Despite these advantages, ZOE's brittleness can be a limitation, particularly in load-bearing restorations. It's also noteworthy that ZOE sets through an acid-base reaction, when zinc oxide reacts with eugenol to form a hard matrix.
It's crucial to recognize that ZOE should not be used with composite restorations or with patients who have an allergy to eugenol. These considerations ensure safe and effective utilization of ZOE in dental practices.