One Piece Tapered Implant for Lower Incisor
A fifty-eight-year-old lady is reported to have fractured the tooth #24. If the tooth is deemed non-salvageable upon clinical examination next week, it appears that one-piece tapered immediate implant is preferable.
Two PAs were taken at different angulations (Fig.1,2 vs. 3,4). The shortest M-D width of the tooth #24 is 3.16 mm (Fig.4 vs. 4.54 mm in Fig.2, probably close to the B-L width).
There is plenty of dimension in height. What is the appropriate size of the implant? How to handle the discrepancy of M-D and B-L widths?
Dear Dr. Borgner: Thanks for the advice again. The patient showed up this afternoon. The tooth (in fact #25 in Fig.5) is pretty badly broken down, but the patient is not ready for implant right now. Prefabricated post and temporary crown are provided. Fig.6 shows the longest post space that can be gained. The mesiodistal dimension of the tooth is 3 mm above gingiva clinically; the buccolingual 5 mm; the minimal dimension between #24 and 26 is 3.5 mm. There is plenty of height. The longest one piece tapered implant from Tatum Surgical is 17 mm. The appropriate implant should be 3x17 or 3.5 x17 if the proximal surfaces of #24,26 are to be trimmed further. This was done when the temporary crown was fabricated. Anyway, thanks for guidance.
Xin Wei, DDS, PhD, MS 1st edition 06/02/2012, last revision 06/05/2012