a) for guided tissue regeneration in oral and maxillofacial surgery to correct a morphological defect or abnormality,
b) in contact with teeth and/or dental implants,
c) for prevention of epithelial migration in periodontal surgery,
d) for the augmentation of bone prior to the planned insertion of dental implants,
e) and/or for augmentation of bone for stabilization of dental prostheses.
This International Standard is not applicable to materials whose primary intended use is to deliver a medicinal product, autografts and allografts, or materials intended to act through pharmacological, immunological or metabolic means.