Hydroxyapatite and Collagen Combination-Coated Dental Implants Display Better Bone Formation in the Peri-Implant Area Than the Same Combination Plus Bone Morphogenetic Protein-2-Coated Implants, Hydroxyapatite Only Coated Implants, and Uncoated Implants

In this study, the CH group displayed significantly greater new bone formation and BIC than the other groups. There was no significant difference among the other groups.