Dental Bonding agents have hydrophilic and hydrophobic groups. The hydrophobic group binds which structure? A Calcium in enamel B Hydroxyapatite group in hard tissue C Resin in restoration D Collagen in dentin 💡 Explanation Bonding agents have hydrophilic and hydrophobic groups. The hydrophobic group binds which structure? ✓ Correct Answer: C. Resin in restoration