Marginal Bone Loss around Implants with Internal Hexagonal and Internal Conical Connections: A 12-Month Randomized Pilot Study

doi:10.3390/jcm10225427

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AutoresGalindo-Moreno P, Concha-Jeronimo A, Lopez-Chaichio L, Rodriguez-Alvarez R, Sanchez-Fernandez E, Padial-Molina M

Por qué importa

Este estudio piloto aleatorizado evalúa la pérdida ósea marginal a los 12 meses en implantes dentales con conexión interna hexagonal o cónica. La importancia clínica radica en que se observó una mayor pérdida ósea en el grupo de conexión hexagonal (-0.70 mm) en comparación con la conexión cónica (-0.25 mm), siendo esta diferencia estadísticamente significativa. Estos hallazgos sugieren que la elección del tipo de conexión protésica del implante podría influir en el mantenimiento del soporte óseo periimplantario a corto plazo. Los resultados son relevantes para la toma de decisiones clínicas en la planificación y rehabilitación de pacientes con implantes unitarios, buscando optimizar la longevidad de las restauraciones y la salud periodontal.

Abstract original

The aim of this study was to analyze the differences in terms of the marginal bone level (MBL) around implants with either an internal conical or an internal hexagonal implant–prosthesis connection. A randomized clinical trial included patients in need of a single implant-supported restoration. The implant–prosthesis connection was either internal conical or internal hexagonal while maintaining the same type of implant macro- and microarchitecture. Clinical and radiographical variables were registered up to 12 months of follow-up, including MBL. A total of 30 patients were included in the study. The main outcome variable, MBL 12 months after prosthesis delivery, was statistically different in both groups: −0.25 (0.12) vs. −0.70 (0.43) (conical vs. hexagonal; p = 0.033). Differences were also observed at the 3- and 6-month follow-up visits as well as for the MBL change from prosthesis delivery to the 12-month follow-up (−0.15 (0.13) vs. −0.56 (0.44); conical vs. hexagonal; p = 0.023). Correlations between MBL around the implants and radiographic measurements on the adjacent teeth, buccal bone to implant, tissue thickness or keratinized tissue were not significant neither globally nor when analyzed independently by group. In view of such results, it can be concluded that single-unit restorations with internal hexagonal-connection implants induce higher marginal bone loss after 12 months of follow-up from prosthesis delivery than internal conical-connection implants.

Leer texto completo ↗DOI · 10.3390/jcm10225427

Autor Doctor&Cols

Lucía López Chaichío
Rehabilitación Oral y Estética Dental

Cómo citar

Galindo-Moreno P, Concha-Jeronimo A, Lopez-Chaichio L, Rodriguez-Alvarez R, Sanchez-Fernandez E, Padial-Molina M. Marginal Bone Loss around Implants with Internal Hexagonal and Internal Conical Connections: A 12-Month Randomized Pilot Study. Journal of Clinical Medicine. 2021. doi:10.3390/jcm10225427