The invention relates to a dental instrument (1), comprising a connecting segment (11) for connecting the dental instrument to a drilling-device accommodating shaft, wherein the material removal segment (12) has an outer annular bit (30) and an inner annular bit (40), which are both formed rotationally symmetric to a longitudinal instrument axis (L1), wherein the material removal segment (12) has an annular groove (50), which is formed between an inner surface (30d) of the outer annular bit (30) facing the inner annular bit (40) and an outer surface (40c) of the inner annular bit (40) and opens to a second end (12b) of the dental instrument (1), which second end is opposite the first end (11a) of the dental instrument, a bone input material product (200) for use as storage or transport material for providing bone pieces (KR) of a specified shape for bone treatments, wherein the bone input material product (200) is formed by an elongated hollow body (202) made of a bone material or bone substitute material, a protective sleeve (400) for protecting bone tissue during rising processes on a dental implant, and a protective cap (700) for protecting an implant (100) inserted in a jaw (K), the protective cap (700) having a cylindrical protective-cap base body (710) and a covering shell (730) arranged at an axial end of the protective-cap base body (710).
