Aim: The aim of the study was to access the marginal bone loss after early loading of nano coated hydroxyapatite implants in posterior maxilla.

Methodology: This study was conducted on nine patients with at least a missing one maxillary posterior tooth. Ten Nano-coated hydroxyapatite implants (ETIII NH implant by Hiossen) were inserted in nine patients, and then marginal bone height was measured at 4 weeks (H0) which was the time of implant loading, and 4 month (H1) post-operatively by CBCT. Cone-beam computed tomography (CBCT) was performed in all patients before starting the treatment to determine wither the patient is eligible for implant placement or not. 9 implants healed well except for one implant that failed in the first week due to infection.

Results: There was no effect on implant's marginal bone, the difference between marginal bone level at H0 and H1 was non-significant, (P value 0.45).

Conclusion: Nano-coated hydroxyapatite implants maintained marginal bone height at 4 months (No bone loss).