Inclusion Criteria:  Patients within age group of ≥ 18. There should be absence of any systemic diseases. Patients have missing simple posterior tooth Adequate interarch space. Inadequate residual bone height to place standard length implant. Patients with good oral hygiene.  Exclusion Criteria:  A history that would complicate the outcome of the study, such as alcohol or drug dependency, smoking, poor health, or any other medical, physical or psychological reason that might affect the surgical procedure or the subsequent prosthodontics treatment and required follow-up. Heavy smokers. Poorly controlled diabetes mellitus. Patients on radiotherapy. Patients with temporomandibular disorders