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.
A palatal expander is a device in the field of orthodontics which is used to widen the upper jaw (maxilla) so that the bottom and upper teeth will fit together better. There are devices to achieve the similar effect of mandibular expansion or lower jaw expansion as well.[1][2] This is a common orthodontic procedure.