Artificial root for dental implantation and method for manufacturing the same
An artificial root for dental implantation comprises a neck portion, an end portion opposite the neck portion, a body portion and a multiplex thread structure which is formed on the body portion. The multiplex thread structure comprises a first thread and a second thread in which the first thread forms a root portion with a specific first width for the second thread, which has a crest portion of a specific second width, to be accommodated into the root portion. The multiplex thread structure is partially configured in such a way that the second width of the crest portion is simultaneously increased when the first width of the root portion is gradually increased.
1. An artificial root for dental implantation, comprising:
a neck portion;
an end portion for implanting, which is opposite the neck portion;
a body portion defined between the neck portion and the end portion; and
a multiplex thread structure formed on a surface of the body portion from the end portion toward an end approaching to the neck portion, the multiplex thread structure at least comprising a first thread and a second thread;
wherein the first thread forms a root portion with a first width for the second thread which has a crest portion with a second width being accommodated therein, and the multiplex thread structure is configured in such a way that the second width of the crest portion is simultaneously increased when the first width of the root portion gradually increases along the surface of the body portion, the first width of the root portion of the first thread gradually increases towards the end portion, and the first thread has a thickness increasing along the surface of the body portion from the end portion towards the neck portion.
2. The artificial root as claimed in claim 1 , wherein the multiplex thread structure is a twin helical thread structure.
3. The artificial root as claimed in claim 1 , wherein the crest portion of the second thread is partially formed with a groove where the second thread is adjacent to the end portion.
4. The artificial root as claimed in claim 2 , wherein the body portion is tapered towards the end portion.
5. The artificial root as claimed in claim 2 , further comprising a tapping groove formed on the body portion.
6. The artificial root as claimed in claim 2 , wherein the first thread and the second thread are substantially identical where they are adjacent to the neck portion.