...

O.city · 03-22-2024, 08:22 AM

I've never heard of that, but theoretically.....

Most restorative fillings and such now are composite (white, tooth colored) and are bonded in. There are multiple different bonding systems we use, but for the most part they all use the same steps

First there is an acid etch that etches the enamel rods and prepares them for the bond, then a bonding agent is applied. The bonding agent has to be air dried to blow off the reagent (I can't remember which one or what that is), then UV light cured. THen you place the composite resin in layers and cure each.

If you over dry or under dry the bond you can introduce some air, so that would be my guess as to what the "trapped air" would be?

I've had some issues in the past with patients having post op sensitivity on these, mostly chalk it up to moisture as these are to be placed with no moisture present. Inadequate bond or light cure can cause leakage which leads to sensitivity. But I've never really thought about the air trap stuff. Interesting though.

03-22-2024, 08:22 AM	#36
O.city In Search of a Life O.city's Avatar Join Date: Jul 2009	I've never heard of that, but theoretically..... Most restorative fillings and such now are composite (white, tooth colored) and are bonded in. There are multiple different bonding systems we use, but for the most part they all use the same steps First there is an acid etch that etches the enamel rods and prepares them for the bond, then a bonding agent is applied. The bonding agent has to be air dried to blow off the reagent (I can't remember which one or what that is), then UV light cured. THen you place the composite resin in layers and cure each. If you over dry or under dry the bond you can introduce some air, so that would be my guess as to what the "trapped air" would be? I've had some issues in the past with patients having post op sensitivity on these, mostly chalk it up to moisture as these are to be placed with no moisture present. Inadequate bond or light cure can cause leakage which leads to sensitivity. But I've never really thought about the air trap stuff. Interesting though.
Posts: 81,361