Thursday 10 March 2011

Resin-bonding to amalgam or composite

A final years student had been told conflicting things about whether or not he could bond a resin-bonded bridge onto a composite inlay. He was (and may still be) confused. Can we bond a bridge (with palatal-occlusal coverage) onto a composite inlay?

Southern Cross Dental Labs http://bit.ly/hLZwOk
We can do anything. But how long will it last?

The gold standard for resin bonded bridges would appear to be bonding to enamel - that's what the resins are designed to bond to. So the question for me in deciding if bonding to composite or amalgam is: does it last as long as when we bond to enamel?

I therefore did a search on Pubmed this evening using the terms below (you'll have to reverse them - I started at the bottom). From the 200 articles at the top of this list I was unable to find any studies that compared bridges bonded to enamel and bridges bonded to either composite or amalgam.

Therefore, it would appear that we have little evidence to say whether bonding to amalgam and composite is better, worse or the same as bonding to enamel. Sorry about that.


Search (#18) AND #9 Limits: Clinical Trial, Meta-Analysis, Practice Guideline, Randomized Controlled Trial, Review
14:59:45
Search (#18) AND #9
14:53:12
Search ((((((#17) OR #15) OR #14) OR #13) OR #12) OR #11) OR #10
14:52:20
Search "Dental Restoration, Permanent"[Mesh]
14:51:49
Search compomer
14:50:44
Search glass-ionomer
14:50:36
Search restoration
14:50:17
Search filling
14:50:04
Search composite
14:49:47
Search amalgam
14:49:41
Search (((((#3) OR #4) OR #5) OR #6) OR #7) OR #8
14:48:44
Search resin AND retained AND prosthesis
14:47:59
Search resin AND fixed AND prosthesis
14:47:30
Search Maryland AND bridge
14:47:04
Search resin AND retained AND bridge
14:46:43
Search resin AND bonded AND bridge
14:46:09
Search "Denture, Partial, Fixed, Resin-Bonded"[Mesh]
14:45:41
514