The improved molar and/or pre-molar dental implant embedded in the bone of a person's (a dental patient's) jaw prevents a possibility of the implant's pivotability into the extracted tooth socket after insertion. An improved dental implant includes an upper portion, a basis and a lower portion of the implant's body. The upper portion comprises a main neck, a rim and a conic rhomboid form head, including an aperture comprising an inner thread. The lower portion includes a rod comprising the plurality of extensions, and a transverse space crossing the rod along its lateral axis.