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Background The aim of this prospective study was to report the outcome of treatment with implants inserted after tooth extraction and immediately loaded. Material and Methods Fifty-six patients with single tooth loss were treated with 116 IPX Galimplant® implants with internal connections and a sandblasted, acid-etched surface. All implants were placed after tooth extraction using a flapless approach without bone regeneration, and they were then immediately loaded with cemented acrylic prostheses. After a period of three months, definitive cemented ceramic prostheses were placed. Patients were examined throughout a total of 4 years of follow-up. Marginal bone loss and survival rates were evaluated using digital periapical radiographs, taking into account clinical variables such as age, gender, smoking, history of periodontitis, etiology of extraction, placement site, diameter, and implant length. The Mann-Whitney U and Kruskal-Wallis non-parametric tests were used to compare differences between subgroups created based on the different clinical variables identified. Results Clinical results indicate an implant survival and success rate of 97.4%. Three implants were lost. Of the 116 immediate acrylic single crowns initially placed, 113 were replaced with definitive ceramic crowns after 3 months. A total of 77.8% of implants were inserted in the maxilla, while 22.2% were inserted in the mandible. No further complications were reported after the follow-up period (4 years). The mean marginal bone loss was 0.67 mm ± 0.40 mm. No differences were found among the subgroups of study patients. Conclusions This study indicates that dental implants that are inserted after tooth extraction and immediately loaded may constitute a successful and predictable alternative implant treatment. Key words:Dental implants, post-extraction implants, fresh sockets, immediate loading, immediate prostheses, implant dentistry.

RESUMEN Introducción: El objetivo del presente estudio era valorar los resultados de las restauraciones inmediatas en implantes dentales unitarios insertados después de la extracción. Métodos: 36 pacientes con pérdidas dentales unitarias anteriores fueron tratados con 64 implantes IPX (Galimplant®) de conexión interna y de superficie arenada y grabada. Todos los implantes fueron insertados después de la extracción correspondiente y fueron cargados de forma inmediata. A los 3 meses se realizaron las prótesis definitivas. Resultados: Los hallazgos clínicos indican una supervivencia y éxito de los implantes del 96,9%, después de un periodo medio de carga funcional de 58,7 meses, ya que 2 implantes se perdieron. El 81,2% de los implantes fueron insertados en el maxilar superior mientras que el 18,8% en la mandíbula. Se realizaron 64 coronas unitarias provisionales de resina y posteriormente de cerámica a los 3 meses. Conclusiones: Este estudio indica que el tratamiento con implantes dentales insertados después de la extracción y cargados de forma inmediata con coronas unitarias puede constituir una alternativa implantológica predecible y exitosa. ABSTRACT Introduction: The aim of this study was to report the outcome of immediate restorations with implant inserted after tooth extraction. Methods: 36 patients with anterior single tooth loss were treated with 64 IPX Galimplant® internal connection and sandblasted-etched surface implants. All implants were inserted after tooth extraction and loaded with immediate acrylic crowns. After a period of 3 months it realized definitive ceramic prosthesis Results: Clinical results indicate a survival and success rate of implants of 96.9%; after a mean functioning period of 58.7 months, that two lost implants were reported. 81.2% of implants were inserted at maxilla while 18.8% were inserted at mandible. 64 immediate acrylic single crowns and after 3 months ceramic prosthesis were realized. Conclusions: This study indicate that dental implants inserted after tooth extraction and immediately loaded with single crowns may constitute a successful and predictible alternative implant treatment.

RESUMEN Introducción: El objetivo del presente estudio era valorar los resultados de las restauraciones inmediatas en implantes dentales unitarios insertados después de la extracción. Métodos: 36 pacientes con pérdidas dentales unitarias anteriores fueron tratados con 64 implantes IPX (Galimplant®) de conexión interna y de superficie arenada y grabada. Todos los implantes fueron insertados después de la extracción correspondiente y fueron cargados de forma inmediata. A los 3 meses se realizaron las prótesis definitivas. Resultados: Los hallazgos clínicos indican una supervivencia y éxito de los implantes del 96,9%, después de un periodo medio de carga funcional de 58,7 meses, ya que 2 implantes se perdieron. El 81,2% de los implantes fueron insertados en el maxilar superior mientras que el 18,8% en la mandíbula. Se realizaron 64 coronas unitarias provisionales de resina y posteriormente de cerámica a los 3 meses. Conclusiones: Este estudio indica que el tratamiento con implantes dentales insertados después de la extracción y cargados de forma inmediata con coronas unitarias puede constituir una alternativa implantológica predecible y exitosa.