Indications for use of porous hydroxyapatite at time of endosteal implant placement.

Placement of coralline porous hydroxyapatite (PHA) at the time of first stage endosteal implant surgery has been shown to be effective in preventing mucosal dehiscence when the buccal cortex is perforated during implant placement. PHA was used to obliterate the space around the occlusal end of endosteal implants placed during tooth extraction. When vital structures would be jeopardized by full implant insertion, PHA can be placed in the area around the protruding implant to prevent mucoperiosteal flap fenestration.