Which statement is true about GLUMA's composition?

• A. It contains 5% glutaraldehyde and 35% HEMA
• B. It contains 7% glutaraldehyde and 35% HEMA
• C. It contains 5% glutaraldehyde and 50% HEMA
• D. It contains 5% HEMA and 35% glutaraldehyde

Answer: (A)

GLUMA Desensitizer is formulated with 5% glutaraldehyde and 35% HEMA. The 5% glutaraldehyde works by cross-linking and coagulating proteins inside dentinal tubules, forming a plug that reduces fluid movement and lowers sensitivity. The 35% HEMA is a hydrophilic monomer that helps the product wet the dentin surface and facilitates bonding with resin-based adhesives used later. The other statements don’t match the product’s standard formulation: they either alter the key concentrations or swap them, which would change the intended desensitizing and bonding behavior. So, the true composition is 5% glutaraldehyde and 35% HEMA.