Peri-Implant Behavior of Sloped Shoulder Dental Implants Used for All-On-Four Protocols: An Histomorphometric Analysis in Dogs

doi:10.3390/ma11010119

★ Alto impactoQ1 · EngineeringImpact Factor · 4.287

AutoresJosé Luís Calvo‐Guirado, Aldo Lucero-Sánchez, Ana Boquete‐Castro, Marcus Abboud, Sérgio Alexandre Gehrke, Manuel Fernández Domínguez, Rafael Delgado-Ruíz

Por qué importa

Este estudio en modelos caninos investiga el comportamiento tisular periimplantario de implantes dentales con diseño de hombro inclinado (30°) frente a un diseño convencional. Ambos tipos de implantes se colocaron en alvéolos postextracción y se sometieron a carga inmediata, simulando un protocolo All-On-Four. Se evaluó el grosor del tejido blando y la pérdida ósea marginal tras tres meses. Los resultados indican que el diseño de hombro inclinado mostró un mayor grosor del tejido blando, aunque la pérdida ósea marginal fue comparable entre ambos grupos. Estos hallazgos son relevantes para la selección de implantes en casos de carga inmediata y para optimizar la estabilidad de los tejidos blandos alrededor de implantes en rehabilitaciones complejas.

Abstract original

The aim of this study was to evaluate the soft tissue thickness and marginal bone loss around dental implants with sloped micro-threaded shoulder (30° angle) in comparing with conventional design, inserted 30° degrees angulated in post extraction sockets and immediate loaded with temporary prosthesis simulating the all-on-four protocol. Materials and Methods: Six fox hound dogs received forty-eight post extraction dental implants with the different diameter and length (Medentika, Germany), but with different neck configurations. Two group of implants were inserted 1mm subcrestal. Control group has a micro-threaded neck and the Test group has a sloped microthreaded neck. Immediate loading was applied using a constructed metallic structure. After three months, soft and hard tissue levels were assessed by histomorphometric analysis. Results: The mean soft tissue thickness (STT) was 2.5 ± 0.2 mm for the Control group and 3.3 ± 0.3 mm for Test group (p = 0.036), meanwhile the mean marginal bone loss (MBL) was 1.53 ± 0.34 mm for Control group and, 1.62 ± 0.22 mm for Test group (p > 0.05). Conclusions: Within the limitations of this experimental model in dogs, the findings showed that dental implants with microthreaded and microthreaded sloped necks installed in immediate post extraction sites with immediate load, presented a comparable perimplant tissue behavior.

Leer texto completo ↗DOI · 10.3390/ma11010119

Autor Doctor&Cols

Ana Boquete Castro
Cirugía Oral e Implantología

Cómo citar

Calvo‐Guirado JL, Lucero-Sánchez A, Boquete‐Castro A, Abboud M, Gehrke SA, Domínguez MF, et al. Peri-Implant Behavior of Sloped Shoulder Dental Implants Used for All-On-Four Protocols: An Histomorphometric Analysis in Dogs. Materials. 2018. doi:10.3390/ma11010119