The use of molded tympanic heterograft (lamb peritoneum).

The molded heterograft tympanic membrane was applied to twenty-five ears during tympanoplasty. The advantages and disadvantages of the graft material are discussed. Although autograft use is the principal choice, we strongly believe that this heterograft technique may be an alternative for tympanic membrane grafting; especially in revision cases in which temporalis fascia has already been used.