Forty-three patients at two different international sites underwent on
lay facial augmentation of the malar, paranasal, and chin regions usin
g 61 HTR(R) polymer preformed implants. All implants were placed intra
orally and rigidly fixed with a titanium screw. Over postoperative per
iods ranging from two to five years, one implant was removed because o
f infection. Two other implants in patients with rheumatic and connect
ive tissue disease were removed because of persistent pain and erythem
a. Another peri-implant infection was treated successfully without rem
oval. One-year postoperative radiographs in patients with chin implant
s demonstrated no underlying bone resorption. This porous polymeric ma
terial appears to offer clinical results comparable to other alloplast
ic materials for onlay facial skeletal augmentation.