A dental implant body specially for sinus use comprises a dental implant body provided with a plurality of positioning threads on the periphery thereof, as well as an actuator assembly hole provided therein the dental implant body having more than one spiral grooves spaced in a staggering manner along the plural positioning threads. The dental implant body has a pushing portion with a narrowing diameter disposed at the end of the plural positioning threads, and forms a smooth pushing end face, the pushing end face being provided with a recess space in open communication with the outside, and the recess space being communicated with the ending terminal of said spiral chute channel, so as to effectively prevent penetration of the sinus floor during the dental implant surgery, and can further push selectable amount of bone powders or fillers and get the dental implant body positioned.一種鼻竇專用植牙體,包含在一植牙體外周設有多數定位螺牙,以及在內部設有一作動組裝孔;植牙體沿著多數定位螺牙設有一個以上以交叉向的間隔螺旋槽道;植牙體在所述多數定位螺牙的端部設有一縮小徑的頂推部,並形成一平滑的頂推端面,並由所述頂推端面設有一與外部開放相通的凹入空間,並使凹入空間與所述的螺旋送料槽道盡端相通;從而能有效預防植牙手術過程中所可能造成的鼻竇層穿透之外,更可同步推入可選擇數量的骨粉或填充物及定位植牙體。10‧‧‧植牙體11‧‧‧定位螺牙13‧‧‧底基部14‧‧‧螺旋槽道15‧‧‧頂推部151‧‧‧頂推端面152‧‧‧凹入空間153‧‧‧圓弧外導邊154‧‧‧圓弧內導邊
