Effect of Different Loading Protocols on Photofunctionalized Implants in the Posterior Maxilla

Inclusion Criteria: * • Patients with missed single tooth or multiple teeth in posterior maxilla * Patients Free from any para-functional habits. * Patient with Adequate inter-arch relation and inter-occlusal space to accommodate the prosthetic restoration. * Patient with good oral hygiene. * Patients Willing to participate in the study's follow-up intervals. Exclusion Criteria: * • Patients with any local or systemic disease that absolutely contraindicate implant placement or surgery. * Pregnancy. * Patients with any pathological lesion or aggressive periodontal disease at the planned surgical site. * Patients on drugs that could affect bone healing process such as bisphosphonate. * Smokers. * Uncooperative patients.