A one-piece dental implant for endosteal and combined endosteal/subperiosteal osseointegration includes a force-transferring foot part for insertion into a jaw, the foot part including a frame in a closed geometric form having an interior open area and at least one bar connected with the frame and extending into the interior open area of the geometric form, said geometric form including at least a partial ring shape; a post that projects out of the jaw, said post connected with the foot part through the bar; and wherein a profile of the bar has a first height at a first transition region where it connects with the closed frame and a second height, which is greater than the first height, at a second transition region where it connects with the post, the height of the bar tapering from the second height to the first height. A method of inserting the disclosed one-piece dental implant for endosteal and combined endosteal/subperiosteal osseointegration into an alveolar bone with a vestibular side and a palatal side includes the steps of providing a one-piece dental implant having a force-transferring foot part for insertion into the alveolar bone and a post that projects out of the alveolar bone; inserting the dental implant into the vestibular side of the alveolar bone; securely engaging the dental implant in the palatal side of the alveolar bone, leaving a part of the dental implant protruding from the vestibular side of the alveolar bone; bending and adapting the protruding part of the dental implant to the vestibular side of the alveolar bone; and trimming extraneous parts of the dental implant.