After evaluating 183 plastic surgery cases, the researchers found out that, on average, 15.8% of instruments were used in General Plastic Tray, while 23.5% were used from Breast Reconstruction Tray. Therefore, 32 out of 71 surgical instruments were removed from the General Plastic Tray, and out of 109 surgical instruments, 40 were excluded from the Breast Reconstruction Tray.