Difference between compomer and resin modified glass ionomer?

[Ostracized]

Hey, just a quick question:

Are compomers and resin modified glass ionomers (RMGIs) just different names for the same thing, or is there a significant difference between the two?

Thanks a lot.

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[219122]

No, RMGI's have resin in them so you can better control the curing and setting times. "Compomers" are poly-acid modified resin composites.

 

[Ostracized]

No, RMGI's have resin in them so you can better control the curing and setting times. "Compomers" are poly-acid modified resin composites.

Maybe I'm dense, but those two descriptions sound like the same thing.

RMGI = GI with added resin.
Compomer = Composite resin with added GI components.

Is it simply a matter of ratios, or am I missing something about the difference in the composition of these materials?

 

[219122]

Maybe I'm dense, but those two descriptions sound like the same thing.

RMGI = GI with added resin.
Compomer = Composite resin with added GI components.

Is it simply a matter of ratios, or am I missing something about the difference in the composition of these materials?

As far as I understand it

RMGI = GI with resin
Compomer = GI + resin + poly acids

 

[nextuszerodmd]

i thought GI in general have polyacrylic acid too?

 

[Ostracized]

i thought GI in general have polyacrylic acid too?

Yeah...they do. I'm going to ask my restorative prof if he knows the difference.

 

[stdmufin27]

.From what I learned this semester. Compomers may not exist anymore. My prof called it weak composite that doesn't release as much Fl as G.I. and doesn't adhere to the tooth very well at all. Plus, RMGI has different filler particles than compomer (Ca and Al I believe). Lastly you are obviously aware of the many applications that you can use G.I. for.
.

 

[mohammed nasser]

Both Compomer and RMGI are listed as modifications of GIC but RMGI has resin inside them cured by light or chemically to set while compomer is more related to composite than GIC .
For me , i prefer RMGI
This is an article about the difference
http://www.cda-adc.ca/jcda/vol-65/issue-9/500.html

 

[nycitygas]

As I understand it...

RMGI = GI + added resin for strength and wear resistance, sets first with light-polymerization followed by an acid-base reaction (although some are self-cure)

Compomer = Polyacid modified GI (but more closely related to a composite). Sets with only light polymerization (no acid-base reaction). Must also be etched and bonded beforehand.