| 摘要 |
The present invention provides a dental implant, includes a body portion, a first thread portion, a head portion, a plurality of second thread portions and a plurality of trenches. The body portion defines a drilling axial direction in a longitudinal direction thereof. The first thread portion is arranged on one end of the body portion in the drilling axial direction. The head portion is arranged on another end of the body portion in the drilling axial direction. The second thread portions have a pitch larger than that of the first thread portion, and formed on radial sides of the body portion. The second thread portions are arranged at different positions in the drilling axial direction. Each second thread portion has a cutting face and a cumulative face at two ends of the dental implant in a rotative direction P. The trench is formed at a radial side of the head portion and the body portion, and passes through the cutting faces and the cumulative faces from the head portion to the first thread portion. |
| 主权项 |
1. A dental implant, comprising:
a body portion (18), defining a drilling axial direction (Z) along a longitudinal direction thereof; a first thread portion (11), formed on one end of the body portion (18) along the drilling axial direction (Z); a head portion (15), formed on another end of the body portion (18) along the drilling axial direction (Z); a plurality of second thread portions (12), having a pitch (G2) larger than a pitch (G1) of the first thread portion (11), and disposed at radial sides of the body portion (18), wherein the second thread portions (12) are distributed along the drilling axial direction (Z) over the body portion (18), wherein each second thread portion (12) has a cutting face (123) and a cumulative face (124) respectively disposed at two ends of a rotative direction in a rotative manner; a plurality of trenches (14), formed on radial sides of the head portion (15) and the body portion (18), and across through the cutting faces (123) and the cumulative faces (124) from the head portion (15) to approach the first thread portion (11). |
