This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Compared to GIC, compomers are inferior with respect to which characteristic: 
Select and explain. 
A. Handling characteristics, B. Strength, C. Sustained fluoride release, D. Wear resistance
C: Sustained fluoride release
Answer: C: Sustained fluoride release 
Explanation: Compomers are composites to which glass ionomer components have been added. 
Primarily light cured they have superb handling characteristics. 
Overall compomers physical properties are superior to GIC and RMGIC but inferior to composites.
They are capable of releasing fluoride but the release is not sustained at a constant rate and anti cariogenicity is questionable.

Reference-Phillips’ Science of Dental Materials / Kenneth J. Anusavice - 11th Ed Pg:328