Immediate Versus Delayed Loading of Maxillary Overdenture Implants

Inclusion Criteria: 1. Males and females must be at least ≥ 21 years of age 2. Fully edentulous maxilla 3. The implant site has to be healed for at least 4 months after extraction 4. Wearing complete dentures deemed adequate 5. Orthopantomogram available (OPT) 6. Adequate amount of bone at least at the 2nd premolar position to house at minimum a 3.5 x 10 mm BLX-Roxolid implant 7. No bone grafting required 8. Implant IT ≥ 20 N/cm Exclusion Criteria: 1. Conditions requiring chronic routine prophylactic use of antibiotics 2. Conditions requiring prolonged use of steroids 3. History of leukocyte dysfunction and deficiencies 4. Bleeding disorders 5. History of neoplastic disease requiring use of radiation or chemotherapy 6. Metabolic bone disorders 7. Uncontrolled endocrine disorder 8. Use of any investigational drug or device within the 30-day period prior to implant surgery 9. Vaping, Tobacco Chewing or Smoking more than 10 cigarettes a day 10. Alcoholism or drug abuse 11. Patient infected with HIV 12. Condition or circumstances, in the opinion of the investigator, which would prevent completion of study participation or interfere with analysis of study results, such as as history of non-compliance, unreliability. 13. Local inflammation including untreated periodontitis 14. Mucosal disease such as erosive lichen planus 15. History of local irradiation therapy 16. Osseous lesion 17. Severe bruxism and clenching habits 18. Active infection with suppuration or fistula track 19. Persistent intraoral infection 20. Lack of primary stability \<20Ncm. In this instance, the patient must be withdrawn and treated according to the standard protocol. 21. Inadequate oral hygiene or unmotivated home care. 22. Bone grafting needed 23. Inadequate bone volume for implants insertion as measured on the pre-treatment cone beam computed tomography (CBCT).