Fig. 4
From: The influence of implant–abutment connection on the screw loosening and microleakage
a Microleakage of toluidine blue from implant–abutment connection at 500 cycles of loading. No statistical difference is indicated (P > 0.05). b Microleakage of toluidine blue from implant–abutment connection at 1000 cycles of loading. c Microleakage of toluidine blue from implant–abutment connection at 1500 cycles of loading. d Microleakage of toluidine blue from implant–abutment connection at 2000 cycles of loading. EP external parallel connection, IP internal parallel connection, CC internal conical connection. Asterisk indicates statistically significant difference (P < 0.05)