Short Dental Implants (5 mm) Versus Long Dental Implants (10 mm)

Inclusion Criteria: * Age 20-70 years at enrollment * Systemically healthy patients * Full-mouth plaque score and full-mouth bleeding score ≤ 30% (measured at four sites per tooth) * In need of one premolar or 1st molar dental implant in the maxillary area * Neighboring teeth to the planned implant must have natural root(s) or implant supported restoration. * Presence of natural tooth/teeth, partial prosthesis and/or implants in the opposite jaw in contact with the planned crown/s deemed by the investigator as likely to present an initially stable implant situation * Residual bone height under the maxillary sinus between 5 to 7 mm and a width of at least 7 mm, as measured on cone beam computer tomography (CBCT) scans. Exclusion Criteria: * Unlikely to be able to comply with study procedures * Uncontrolled pathologic processes in the oral cavity * History of head and neck chemotherapy within 5 years prior to surgery * Systemic or local disease or condition that could compromise post-operative healing and/or osseointegration * Uncontrolled diabetes mellitus HbA1c \>8 * Taking corticosteroids, IV bisphosphonates, or any other medication that could influence post-operative healing and/or osseointegration * Smokes more than 10 cigarettes/day * Bruxer * Present alcohol and/or drug abuser * Pregnant, unsure pregnancy status, or lactating females (self-reported)