AIM: Monophasic electo-welded implantology is a method in which titanium bone screws are soldered with a syncrystallizer after placement; it allows to weld the titanium components directly into the patient’s mouth, without heat and with the maximum comfort for the patient. This method, associated to the technique of immediate loading, involves the transmission of masticatory forces to the bone immediately after implant surgery, with consequent biological stimulation of natural bone which allows to increase the stability already provided by the cortical bone.In this present work, we aim at describing the validity of a simple and minimally invasive therapeutic approach, which allows to place endosseous electro-welded implants and a resin temporary prosthesis within the same surgical operation, resulting in a functional and aesthetic recovery of the patient.

The systems used are screws composed by a central axis called core, by a series of spirals with a variable diameter, a collar and an abutment which, thanks to their morphology, allow to transmit occlusal loads to the surrounding bone by exploiting bicorticalism, similarly to the dental root. Stability and retention ensure a long-lasting result.
In the present work, we report two clinical cases, a patient with compromised periodontal health and another with a situation of edentulism. After studying the case with intraoral X-rays, OPT and DentaScan, titanium screws were placed without opening any surgical flap, in order to achieve bicorticalism; then, we proceeded with parallelization of stumps and formation of the welded joint with titanium bars or wires by means of an intraoral welder (syncrystallizer). Immediately after the surgical phase, we made a provisional resin prosthesis, which was cemented to the removable partial denture with resin cement. The definitive prosthesis was placed a few months later.

RESULTS: With the insertion of electro-welded implants we could notice a high primary stability, which allowed an immediate placement of the provisional restoration, together with a significantly reduced healing time of peri-implant soft tissues, thanks to the use of a flapless surgical technique. In the postoperative visit six months after surgery we could observe, in both cases, a complete osseointegration that allowed the functionalization of the definitive prosthesis and consequent occlusal and aesthetic recovery of the patient. The validity of this technique was confirmed also by 24-, 36- and 48-month follow-up.

CONCLUSION: This technique is recommended for patients with total edentulism who refuse to undergo traumatic and invasive surgical procedures and for patients affected by systemic diseases (diabetes, heart failure, hemopathy). It is an approach that guarantees a significant reduction of healing time and, consequently, a greater patient satisfaction.

Authors: INCHINGOLOFrancesco, POLI Gaetano, SCHINCO Fabio, INCHINGOLO Alessio Danilo, SIMEONE Federico, INCHINGOLO Angelo Michele, MARRELLI Massimo, TATULLO Marco, BALICE Pierluigi, PICARDI Nicola, MALCANGI Giuseppina, MUOLLO Ferdinando, PADUANELLI Gregorio, DIPALMA Gianna.