Guided bone regeneration is the more predictable surgical procedure for the treatment of peri - implant bone defects. Following the surgical procedure and the results obtained are explained.
The placement of implants in the jaw and subsequent integration is a widely known fact. In the treatment osseointegration it is assumed and the objective is not only aesthetic but also functional, regardless of the amount of bone in the patient and the state of soft tissues, in order to ensure its long-term stability.
To achieve the desired aesthetic appearance is not always enough excellent prosthodontic treatment (color, shape of the crown, etc.), it is necessary that the implant is placed in "optimal position" with respect to the prosthesis to be made up, so the implant crown have a harmonious gingival aspect towards neighboring teeth, ensuring a natural aspect of implant crowns.
It is important that for the gingival margins remain stable over time, the implant having a bone plate 2mm thick around the implant, especially in the critical zone. This will ensure stability of the soft tissue around the implant and the implant itself. However, the main obstacle to achieving this goal is the absence of sufficient bone in the alveolar crest. If there is no crest it will hinder correct implant placement in optimal position and when can be done, dehiscence (bone defect) will occur.
Surgical Technique: Guided bone regenerationGuided bone regeneration is the right method to solve these complications.In cases where the implant placement stably in its ideal position a bone defect occurs is possible to simultaneously guided bone regeneration implant placement. It is a bone simultaneous regeneration of bone defects periimplant (dehiscence), using resorbable collagen membrane and autogenous bone.
Clinical caseThis technique was used in this case of a surgical patient with unitary implant. To solve the great dehiscence caused by lack of bone caused, in turn, by a severe periodontal disease, a guided bone regeneration with resorbable membrane and autogenous bone from the maxillary tuberosity, by the expert is Dentistry and Stomatology .
Surgery guided bone regeneration and resultsDue to the small amount of the patient's bone, implant placement in its ideal position implied the need to cover a severe dehiscence. To resolve became an autogenous bone graft in the region of the maxillary tuberosity. Said graft was placed on the vestibular surface of the implant and to ensure their proper integration, the graft was covered with resorbable collagen membrane. Also, to ensure mechanical stability of the graft and the membrane, the latter to the adjacent bone with titanium pins was fixed, performing a suture.
Healing was uneventful and six months later a second surgery was performed to remove titanium thumbtacks. complete bone regeneration in the vestibular implant surface with a thickness greater than 2mm buccal plate was observed in this intervention, which will ensure the maintenance over time marginal gingival levels of the implant crown.
After checking periodontal stability of the remaining teeth and stability of hard and soft tissue around the implant, implant-ceramic crown and ceramic veneers adjacent teeth was placed.