n. 1  The act or process of dividing. 2  Cell division. 3  The operation of determining how many times one quantity is contained in another; the inverse of multiplication.
Research is looking at implant reconstruction with a tissue expander using a dermal matrix product to cover the implant compared to using skin and muscle to cover the implant. The dermal matrix essentially forms a âslingâ that helps form a pocket and support the lower portion of the implant, holding it in position.
Placement and Adjustment of the Tissue Expander. Tissue expander implant breast reconstruction requires a staged approach. To begin the process, the tissue expander is first placed on the chest wall in a pocket created deep to the pectoralis muscle. This first stage can be performed immediately after mastectomy or at a later point in time as a delayed procedure.