When an edentulous arch is restored with traditional submerged implants, it is necessary to use intermediate abutments (like P.A.D., highlighted in light blue in the image) both on the angled distal implants and on the straight mesial implants. Moreover the distal margin of the angled implants has to be submerged, with a resulting crestal bone loss and with difficulties due to the very deep position of the implant connection.
However by using transgingival Prama implants it is possible to avoid intermediate abutments in the frontal sector, positioning only the pre-angled ones on the distal implants . Moreover the conformation of the convergent neck allows to position the distal margin of the tilted implants at crestal level and the mesial margin at transgingival level, bypassing the need for a bone profiler.
ALL ON PRAMA AND SIMPLE TECHNIQUE
The accurate pre-operative study of the case and the use of surgical guides always more reliable and accurate made these techniques safe and reliable also in less experienced hands. The key elements for a clinical success of these rehabilitations are the accurate pre-operative study of the case, the underpreparation
of the implant site and the high consequent torque of the implant insertion that ideally should not be less than 45 Ncm. After many years and numerous successful rehabilitated cases using the Simple technique in combination with the submerged traditional implants, we have concluded that the use of new Prama transgingival implants for immediate loading screw retained rehabilitations has considerable advantages compared to the submerged classical implants:
- Possibility to submerge part of the machined neck of the Prama implant under the residual bone crest in the immediate post-extraction sockets (in prevision of future bone manipulations), without the need to position the implant-post margin too subgingival;
- Transgingival emergence of the implant neck, eliminating therefore the need to use intermediate posts and reducing the discomfort for the patient because of the subgingival work during the delicate phase of placing the temporary prosthesis with immediate loading; on the straight implants the temporary Simple posts are directly used;
- It is possible to avoid modelling the distal bone with drills and trimmers for the angled implants by means of inserting the distal margin of the implant neck at the crest level and leaving supracrestal the mesial margin of the same, with significant time and excellent bone tissue saving, preventing the formation of “bowl shaped” distal defects to the tilted implants;
- Possibility, once the gingiva is healed, to compensate for any gingival retractions enhancing with the permanent prosthesis on the Prama neck implant.