|
Treatment planning related
|
|
During implant, placement reconstruction screw hit and reconstruction screw were removed to accommodate the implant
|
2
|
|
Implant position was changed during surgical procedure and the implant was placed free hand as the implant position from the surgical guide was deemed inappropriate
|
2
|
|
Anatomy related
|
|
Difficult surgical access to place implants so implants were not placed
|
2
|
|
The implant was not placed as there is a high risk of inferior dental nerve damage
|
1
|
|
CAD-CAM surgical guide made access more challenging so it was not used to prepare posterior sites
|
1
|
|
Lack of bone volume to place implant—so an alternative site was used
|
3
|
|
Large incisions were required to attain surgical access to fit the CAD-CAM surgical guide which was deemed inappropriate and the implants were subsequently placed free hand
|
1
|
|
Procedure related
|
|
Lack of primary stability of the implant so larger implant diameter was used to achieve primary stability
|
4
|
|
Lack of primary stability of the implant—implants left in situ
|
2
|
|
Lack of primary stability of implants—so the implant was not placed
|
1
|
|
Lack of primary stability of the implant—so the implant was placed in an alternative site
|
1
|
|
The implant was not placed due to being placed too deep
|
1
|
|
Other
|
|
Inadequate fit of CAD-CAM surgical guide—either was not used or was used in to estimate the implant bed preparation site and angulation but then prepared and placed free hand
|
3
|
|
CAD-CAM surgical guide needed to be adjusted to allow it to fit
|
1
|
|
Total
|
24
|
