[Validity of digital periapical radiography and cone beam computed tomography in the detection of peri-implant bone defects: in vitro study]. / Validez de la radiografía periapical digital y la tomografía computarizada de haz cónico en la detección de defectos óseos peri-implantarios: estudio in vitro.

Abstract: To compare the diagnostic accuracy of digital radiography (DR) and cone beam computed tomography (CBCT) in the detection of peri-implant bone defects. Materials and methods: Implants were placed in 5 fresh bovine ribs (3 without peri-implant bone defects, 12 with 1.4mm peri-implant bone defects) and images were taken using (i) portable x-ray system (DEXCOWIN 3000), (ii) intraoral x-ray sensor (SENSOR H1/SENSOR H2), (iii) volume-limited HSCT with 3D Accuitomo 80 (CASTELLINI). Images of each were randomly presented to 10 examiners. Confidence in the diagnosis of the presence or absence of a peri-implant radiolucency was recorded on a scale of bone defect definitely absent, doubts about the defect if absent or present, defect definitely present. Analyzes was performed using a kappa test. Results: There has been a coincidence between the direct digital radiography and the cone beam computed tomography in piece A of 83.3%, in piece B of 100% and in piece C of 88%, giving an average total coincidence 90.43%.Conclusion: Direct digital radiography provided the same results as cone beam computed tomography in the detection of peri-implant bone defects at an early stage. Digital radiographs are a reliable and valid method and perform significantly better than cone beam computed tomography for detecting peri-implant bone defects at an early stage.

Complicaciones quirúrgicas de la elevación de seno maxilar en implantología / Surgical Complications Associated to Maxillary Sinus Floor Elevation in Implantology

RESUMEN La elevación de piso de seno maxilar ha sido sumamente documentada en implantología como una técnica segura y predecible en el procedimiento de ganancia vertical ósea, en el maxilar posterior atrófico. Sin embargo, conjuntamente se han reportado complicaciones en este procedimiento, las cuales podrían poner en peligro los resultados de la regeneración, y por consiguiente la colocación del implante. El propósito de esta revisión de literatura es exponer y analizar diferentes complicaciones que pueden presentarse en la elevación de piso de seno maxilar.

ABSTRACT Maxillary sinus floor elevation has been extensively documented as a safe and predictable procedure for gaining vertical bone height in the atrophic posterior maxilla. Even though, complications have been reported, which can potentially jeopardize the outcome of the regeneration and implant therapy. Therefore, the purpose of this literature review is to present, debate and analyze the different complications that can occur during a sinus floor elevation.