Collagen tubes: role in subperiosteal contour augmentation.

Collagen-contained implants of particulate hydroxylapatite (C-HA) were compared to implants of hydroxylapatite alone (HA). The collagen-contained implant was more rapidly and more firmly attached to the recipient site and demonstrated more consistent particle consolidation than implants of HA alone. Additionally, the collagen did not interfere with the favorable properties of the particulate hydroxylapatite. Results are excellent for the (C-HA) implant and warrant further investigation in both animals and in man.