Summary – What is Decoupling With Time (DWT)?
When Immediate Dentin Sealing (IDS) is carried out, the bond to dentin begins to develop and the hybrid layer starts to mature. The bond strength does not reach its maximum potential immediately – it takes time to develop. The time taken for the bond to develop depends on the Hierarchy of Bondability (HOB). The process by which the dentin bond is allowed time to develop and the hybrid layer is allowed to mature in a stress-free environment with less influence from polymerization forces, is referred to as Decoupling With Time (DWT).
The dentin bond reaches 90% of its potential strength after 5 minutes. By allowing the dentin bond to Decouple With Time (DWT), the bond is allowed to reach its full potential without being pulled towards the faster-forming enamel or superficial dentin bond.
To learn more about Decoupling With Time (DWT) in relation to the Hierarchy of Bondability (HOB), Immediate Dentin Sealing (IDS), Resin Coating (RC), and C-Factor, see Lesson 3 and Lesson 4 of the Six Lessons Approach to Biomimetic Dentistry below.