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      Colocación de Implante Dental con Elevación Atraumática del Piso de Seno Maxilar: Reporte de Caso Translated title: Placement of Dental Implant With Atraumatic Elevation of Maxillary Sinus Floor: A Case Report


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          RESUMEN: En implantología oral, existen múltiples técnicas para abordar la región atrófica del maxilar posterior. Aun cuando el reborde es limitado, la elevación del piso de seno maxilar sigue siendo el procedimiento de elección. A lo largo de los años, el protocolo quirúrgico se ha ido modificando acorde al avance tecnológico de los sistemas e instrumentos quirúrgicos. Cada opción presenta sus propias indicaciones, ventajas y limitaciones que conducen al clínico para decidir por una u otra técnica. Entre ellas, el abordaje transcrestal es un protocolo predecible y mínimamenteinvasivo para la colocación de implantes y aumentar el volumen óseo en sentido vertical. El presente reporte de caso desarrolla la secuencia quirúrgica para la colocación de implantes en la región posterior del maxilar; siendo uno de ellos, con abordaje transcrest al. Este procedimiento se realizó en una paciente ASA I de 51 años de edad. La planificación del caso fue protésicamente guiada, y la colocación se realizó con implantes Neobiotech® con el Kit Sca de la misma marca (para la elevación del piso de seno maxilar). La cirugía se realizó con una guía multifuncional que permitió ubicar a los implantes en óptima posición tridimensional. Se concluye que la técnica transcrestal es una alternativa recomendable para elevar el piso de seno maxilar en situaciones de reborde con reducida disponibilidad ósea, con la ventaja de realizarse en corto tiempo clínico y baja morbilidad para el paciente.

          Translated abstract

          ABSTRACT: In oral implantology, there are multiple techniques to approach the atrophic region of the posterior maxilla. Even when the ridge is limited, sinus floor elevation remains the procedure of choice. Over the years, the surgical protocol has been modified according to the technological advancement of surgical systems and instruments. Each option has its own indications, advantages and limitations that lead the clinician to decide on one or another technique. Among them, the transcrestal approach is a predictable and minimally invasive protocol for implant placement and increasing bone volume vertically. This case report develops the surgical sequence for the placement of implants in the posterior region of the maxilla; being one of them, with a transcrestal approach. This procedure was performed in a 51-year-old ASA I patient. The planning was prosthetically guided, and the placement was carried out with the Neobiotech® implants case with the Kit Sca of the same company (for the elevation of the maxillary sinus floor). The surgery was performed with a multifunctional guide that placed the implants in an optimal three-dimensional position. It is concluded that the transcrestal technique is a recommended alternative to elevate the maxillary sinus floor in ridge situations with reduced bone availability, with the advantage of performing in a short clinical time and low morbidity for the patient.

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          Most cited references17

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          Bone regeneration in the maxillary sinus using an autologous fibrin-rich block with concentrated growth factors alone.

          The purpose of this study was to evaluate the predictability of new bone formation in the maxillary sinus using an autologous fibrin-rich blocks with concentrated growth factors (CGFs) alone as an alternative to graft material. A total of sixty-one sinus grafts were consecutively performed using the lateral window approach. After making replaceable bony window, the sinus membrane was elevated to make a new compartment. After 113 implants (average 13 mm high) with 11 different systems were placed simultaneously, the collected fibrin-rich blocks with CGFs alone were inserted in the sinus. To seal the lateral window, the bony window was repositioned. Radiographic, clinical, and histologic evaluation was performed to verify sinus augmentation. No significant postoperative complications developed. New bone consolidation in all augmented maxillary sinus was observed along the implants on plain radiographs and on cone-beam computed tomograms. The success rate of implant was 98.2% after an average of 10 months loading. Fibrin-rich blocks with CGFs act as an alternative to bone grafting and can be a predictable procedure for sinus augmentation.
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            Sinus floor elevation procedures to enable implant placement and integration: techniques, biological aspects and clinical outcomes.

            Implant treatment in an atrophied edentulous posterior maxilla constitutes a challenge for the therapeutic team. The authors of the present study acknowledge that modern micro-rough surface implants in lengths of about 8-10 mm or longer and of different brands are similarly successful. Consequently, the authors propose that the use of different sinus floor elevation techniques should be considered when < 8 mm of bone is available below the maxillary sinus. The type of sinus floor elevation technique selected is mainly based on residual vertical bone height, marginal bone width, local intrasinus anatomy and the number of teeth to be replaced, although other factors (such as surgical training and surgical experience) may have an impact. It is proposed that a transcrestal sinus floor elevation approach can be considered as a first-choice method for single tooth gaps in situations with sufficient width for implant placement and a residual bone height of 5-8 mm, while lateral sinus floor elevation, with or without grafting materials, is indicated when < 5 mm of bone is available and when several teeth are to be replaced. With regard to time of implant placement, a one-stage procedure is preferred provided that high primary stability can be ensured.
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              Interventions for replacing missing teeth: augmentation procedures of the maxillary sinus.

              Insufficient bone volume is a common problem encountered in the rehabilitation of the edentulous posterior maxillae with implant-supported prostheses. Bone volume is limited by the presence of the maxillary sinus together with loss of alveolar bone height. Sinus lift procedures increase bone volume by augmenting the sinus cavity with autogenous bone or commercially available biomaterials, or both. This is an update of a Cochrane review first published in 2010.

                Author and article information

                International journal of odontostomatology
                Int. J. Odontostomat.
                Universidad de La Frontera. Facultad de Medicina (Temuco, , Chile )
                September 2022
                : 16
                : 3
                : 337-342
                S0718-381X2022000300337 S0718-381X(22)01600300337

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                : 09 July 2021
                : 23 June 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 17, Pages: 6

                SciELO Chile

                oral,surgery,maxillary sinus,dental implants,cirugía oral,seno maxilar,implantes dentales


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