Peri-implant Tissues on the Galimplant Anti-rotational Slim Abutment.

Throughout implantological history there have been many proposals and modifications in terms of anchorage system, shape, materials, etc. In this project we intend to compare a classic anti-rotational straight esthetic multi-position attachment with the new anti-rotational straight esthetic slim multi-position abutment.

This will hypothetically allow to increase the contact surface of the peri-implant connective tissue, increase the adhesion and sealing power, improve the biological width and consequently minimize the risk of peri-implant diseases such as mucositis and peri-implantitis.

In this regard, we must analyze the healing process of the peri-implant soft tissue after surgery, which will result in a stable peri-implant mucosa. After surgery, soft tissue healing around the transmucosal portion of an implant begins with the formation of a blood clot and the induction of an inflammatory process aimed at tissue formation and remodeling. If that soft tissue formation and remodeling is adequate, the healing process will result in an effective attachment mucosa around the transmucosal portion of the implant.

To obtain this adequate peri-implant mucosa, it is very important that a proper healing process takes place. This process includes the recruitment of inflammatory cells and a process of angiogenesis; and if both processes are correctly developed, all the phases of mucosal healing (hemostasis, inflammation, proliferation, and remodeling of the collagen matrix) will occur successfully.

Inclusion criteria

• Patients who meet all the inclusion criteria and none of the exclusion criteria will be informed verbally and in writing about the study and will sign the informed consent form provided for their participation.
• Systemic conditions favorable for the performance of oral surgical procedures (ASA I/II).
• Not to be completely edentulous
• Bilateral absence of at least two teeth (one per hemimaxillary) in the posterior area (from the first premolar to the second molar) with or without free distal ends.
• That do not require regenerative techniques
• That allow the placement of Galimplant implants of 4.5 or 5 mm in diameter in edentulous areas with mature bone of at least 3 months healing time
• With a prosthetic space of at least 8 mm.
• In case of odd absences, a slim abutment will be placed, being the group to be tested always in the majority.

Exclusion criteria

• Presence of any disease, condition or medication that may compromise the healing and/or osseointegration of dental implants (uncontrolled diabetes mellitus, immunosuppression, administration of bone modifying agents (BMA). Presence of any severe mental disorder, and patients who have received head and neck radiotherapy during the previous 18 months.
• Patients who do not have sufficient peri-implant keratinized gingiva to allow at least 1 mm of residual gingiva after excision of the tissue under study.
• Esthetic edentulous areas of 13-23, Implants with primary stability with ISQ < 50 or <40N, or with abutments that cannot receive torque at 30N are excluded.