In vitro evaluation of a novel self-adhesive composite primer modified with nano zinc oxide and hydroxyapatite: antibacterial activity, marginal microleakage, and interfacial elemental analysis - Raghda Kamh; Alshaymaa Abdelmonaem Mohammed; Hamdy Mahmoud Badreldin; Esraa Abdel Ghaffar El Gezawy (BMC Oral Health, 2026)