What is the main reason for sealants failing?

The primary reason for sealants failing is contamination. Contamination can occur from various sources, such as moisture, saliva, or debris on the tooth surface before the sealant application. If a sealant is applied over a contaminated area, the bond between the sealant and the tooth will be compromised. This weak bond can lead to the sealant lifting or being washed out, undermining its effectiveness in preventing decay.

Each of the other factors can contribute to the failure of sealants, but contamination is often the most critical issue. Insufficient curing time can affect the effectiveness of the sealant but typically occurs less frequently with proper technique. Likewise, while improper application technique can also lead to failure, contamination is more directly linked to immediate bond failure. The type of sealant used may influence durability and success, but if the surface is contaminated, even the best sealant cannot adhere properly. Understanding these nuances helps practitioners recognize the significance of maintaining a clean working environment during sealant application.