ALEXANDRU NISTOR, AGNETA MARIA PUSZTAI, MIRCEA CONSTANTIN SORA, BOGDAN HOINOIU, MIHAI IONAC, PETRU MATUSZ TRAINING IN FLAP HARVESTING USING CORROSION CASTED PIG LATISSIMUS DORSI MUSCLE FLAPS CHOOSING THE OPTIMAL PLASTIC COMPOUND FOR CORROSION CASTING Plastic compounds have been used for several decades to generate anatomical constructs for the training of new surgeons and medical students alike. The present study seeks to highlight the advantages and disadvantages of two different plastic compounds (Technovit 7143 and Epoxi BIODURŅE12) used to create corrosion casts of the vascular branching patterns in free muscle flaps. Porcine latissimus dorsi muscle free flaps were used in this study to create corrosion casts of their vascular branching tree by injecting the two different plastic compound into the main arterial supply. The casts generated by Epoxy BIODURŅ E12 have superior qualities compared to the casts injected with Technovit 7143, because the injection process is smoother at all branching levels, without dilation, strictures or intramuscular extravasation of the injectable plastic compound. The corrosion casts resulted from injecting Epoxy BIODURŅ E12 exhibit better elasticity and better resistance to mechanical handling compared to the ones injected with Technovit 7143.