Objective: To assess the marginal bone loss in the angled implant in the posterior maxillary region.Subjects and methods: A total of 14 implants, 7 angled implants and 7 straight implants in posterior maxilla with surgical guide were placed.Seven patients ranged in age between 40.0 -43.0 years with a mean age of 41.71 ± 1.25 years for angulated implant group; and seven patients ranged in age betwe...