DanSoDental Lab with Pre-Fab (Stock)
Standard prefabricated titanium abutments are traditionally supplied by dental implant manufacturers to match their implants. Also known as “pre-parable” or “direct,” they are available in a variety of shapes and sizes.
Angulations may be adjusted or modified manually either at the laboratory or in the office to adapt the shape according to the position of the implant and the patient’s individual anatomy.
Implant companies have improved the design of these types of abutments over the years to allow for better emergence contours, pre-scalloped margins, and in some cases provide prefit impression copings for more accurate transfer of the abutment positions. These improved designs mean less preparation time in the lab, better overall abutment and crown contours, and increased lab and clinical efficiency which results in a better final result for the patient.
When there is an inadequate volume of metal for proper reduction in order to establish margin definition, antirotation, or emergence profile due to patient differences in tissue height and width, stock abutments offer less flexibility.
The use of stock abutments requires very accurate implant placement in order to minimize preparation of the abutment. Angled abutments are available to cover small discrepancies in implant angulation (i.e. up to about 15 degrees). Severe angulation problems may result in overreduction of prefabricated abutments. This may cause loss of resistance and retention properties.