Is cranial reconstruction with hard-tissue replacement patient matched implant (HTR-PMI) as safe as previously reported?

Nassiri N, Cleary D, Ueeck B. Is cranial reconstruction with hard-tissue replacement patient matched implant (HTR-PMI) as safe as previously reported? A 3-year experience and literature review. J Oral & Maxillofacial Surg.; 67 (2): 323-327, 2009.