Surgical protocol
All patients eligible to participate in the study underwent a detailed clinical examination and exhaustive radiological study consisting of a CBCT in order to three-dimensionally assess the relationship with important anatomical structures and bone availability and quality. For implant placement, the socket should be completely healed, being a type IV socket according to the classification of Tonetti et al. 2019 [Surgical drilling protocols for implant placement in underpreparation, conventional drilling, and expanders techniquePatients were prescribed with a 0.12% chlorhexidine mouthwash (Perio-Aid®; Dentaid®) to use after tooth-brushing for 1 week. All patients were instructed to follow a soft and tepid diet in the first 3 days after surgery, along with instructions for oral hygiene. They received a prescription for Amoxicillin 750 mg (or 300 mg clindamycin for penicillin-allergic patients), one tablet every 8 h for 5 days. Additional prescriptions included anti-inflammatory and analgesic drugs for 3 days.