Study Design/Sample. This study will be a prospective cohort study. The study sample will be derived from patients presenting to the study site in need of at least two dental implants and who satisfy the criteria listed below. The study site for this project will be University of California, Los Angeles (UCLA) Postgraduate Periodontics and Implant Surgery Clinic. Implant surgeries will be performed by postgraduate periodontal residents of this program. Any resident involved in this study will have had previous experience in placing dental implants. Also, the residents will be, at all times, under the supervision of attending faculty with extensive experience in dental implant surgery.