Table 1.
Numbers of fractures of tooth roots and/or alveolar bones during mechanical testing of extracting the replanted or non-replanted teeth from their own sockets.
| Days after replantation | Groups | |||
|---|---|---|---|---|
| NC (40) | PBS (27) | AC (28) | PDGF-BB (30*) | |
| 0 | 1 (10) | – | – | – |
| 7 | 0 (10) | 0 (9) | 0 (9) | 0 (8) |
| 14 | 1 (10) | 3 (9) | 7 (9)a,b | 1 (9) |
| 21 | 0 (10) | 8 (9)a | 10 (10)a | 3 (10) |
Number of rats is shown in parentheses.
aSignificant difference from PDGF-BB group, p < 0.001 (chi-squared test).
bSignificant difference from PBS group, p < 0.01 (chi-squared test).
*Tooth replantation was unsuccessful in two rats of the PDGF group. In addition, tooth crown of a replanted tooth was fractured due to unsuccessful clamping before mechanical testing in one rat of the PDGF-BB group at 7 days.