Primary objective of this trial: To evaluate the clinical performance (aesthetic outcome and quality of life) and safety of a 3D-printed biodegradable biological mesh in post-mastectomy immediate breast reconstruction. The study targets adult women undergoing total mastectomy for breast cancer followed by implant-based reconstruction. It aims to determine the utility of the 3D-printed biodegradable mesh in implant-based breast reconstruction, assess its influence on tissue regeneration, postoperative cosmetic result, and complication profile.