Crown made from composite?
I have a patient who needs a crown on an implant abutment. I am wondering about the about the reaction of tissues to the composite? I am thinking of making the crown myself out of glass ionomer and composite; I am going to make the cervical margin and cervical third out of glass ionomer because it contacts the tissue and is more biocompatible than composite resin. I am going to make the rest of the crown out of composite resin. Do you think this will be successful long term?
9 Comments on Crown made from composite?
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Leal
11/29/2014
Forget the cervical glass ionomer. Composite all the way on top of titanium CAD-CAM abutments (they are cheap) or provisional titanium cylinders is no problem as long as it is Immaculately polished. I have done that myself as long (and very long) term provisionals in posteriors to test VDO and TMJ function. Ceramage works good for me and their metal bonding agent seems perfect and this composite resin (Ceramage) is even cheaper then all the composites I use in my daily practice. I must say that I don't really like its appearance (my premium in office resin composites can almost look like e-max whereas Ceramage in my hands will not definitely) but I am no dental technician and I don't do those crowns every day so you get the point.
As long as you don't leave air bubbles between the composite layers why not try it?
Mark Montana
12/2/2014
Unless this is a provisional crown, it is a bad idea. Poor compressive strength, porosity resulting in biofilm, fluid absorption resulting in color change and hydrolytic breakdown and poor wear resistance are all problems to be expected. It makes little sense given the relatively inexpensive options of zirconia and Emax; both of which have none of the above limitations.
joe nolan
12/3/2014
Not sure I'd agree with you Mark, unless you're referring to composites from a long time ago.
Jalil s. Sadr
12/4/2014
If patient have implant so he/ she are looking for something permenant or long lasting. why you want to make such crown? why not other materials? why you should fear of tissue reaction? any problem exist? Have you make temporary crown with glass ionomer and composite before? How you could use glass ionomer for making crown? any articles or especial techinque for it. please give us references.
Do you have any idea about water solubility, strergth, color change of glass ionomer? what will happened in mouth? Please do something best for patient and think about ethics of dentistry, unless this is an approved technique. I have not done this so far to have any idea about it but it seems for sure will not be successful niether for long term nor even for short time as temporary crown.
Cliff Leachman
12/9/2014
I dont understand why you would even consider such a thing, especially after Expensive implant surgery. Composite is BPA based plastic and not good for tissue, no matter what the gurus tell you. There will come a time in the not to distant future where Dr's will wonder what we were thinking?
John Ackley
12/9/2014
There is definitely something to be said about chair side reparability. It is also nice to be able to close an access hole and have it disappear. Highly filled resins can mimic porcelain in trained hands and a titanium interface bodes well for the long term success of the index on the fixture. imo
Richa
12/9/2014
Composite crowns make excellent crowns on implants. However, all the composites must be reinforced with glass fibers. I use Dentapreg woven glass fiber. It cannot be seen in the composite, polishes like the composite, can easily be wrapped around a provisional titanium abutment. The secret is to make sure there are no spaces between layers, and each layer is cured properly. You must remember, that the Bicon implant crowns coming from Bicon are composite as well. Once nice thing about composite, is that it is a stress breaker. Good luck
joe nolan
12/10/2014
We seem to have no bother using flowable to profile the gingiva prior to imp taking, haven't seen much issue with bio reaction....in the main though, I'd side with Cliff, and use porcelain or titanium, if you look at long term
Nathan Vassiliades
8/5/2015
I was just wondering how it played out and why you embarked on this quest?