Clinical and radiographic evaluation of autologous sticky bone versus PRF with OCP-coated deproteinized bovine bone graft in periodontal infrabony defect regeneration: a randomized controlled trial - Sakshi V. Kotecha; Priyanka Jaiswal; Shweta Bhagat; Pranjal Laturiya; Geeta Bhandari (BMC Oral Health, 2026)