Socket preservation is not required after every extraction. The decision depends on the treatment plan, socket morphology, buccal plate integrity, soft-tissue phenotype, infection control, aesthetic risk and whether future implant or prosthetic rehabilitation is anticipated. It may reduce post-extraction dimensional change, but it does not completely prevent physiological remodelling.
Review indications, assessment and grafting options: dentalreach.today/extraction-socket-preservation-when-why-how
Which socket characteristics most strongly influence your decision to graft immediately?