@turkay1, @ddljohn-- Yes, it has been proven now that wounds heal much faster with moist wound healing. But the reason it's not appropriate for all wounds is because the moist environment actually promotes bacteria growth. This may not always be a bad thing because bacteria can also increase cell reproduction. However, it could also get out of hand and develop into an infection.
That's why, I think that moist wound healing should only be used under the care of a medical practitioner. We use it all the time at the hospital I work at, but we check the wounds daily to make sure there is no developing infections.
This is also the reason that moist dressings are added antibacterial medications, to keep away infections. So it's a good wound treatment, but it needs to be observed carefully.