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Related Experiment Video

Updated: May 31, 2026

Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials

Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials

Published on: August 13, 2019

Enhanced implant integration with hierarchically structured implants: a pilot study in rabbits.

Carina B Johansson¹, Christina Gretzer, Ryo Jimbo

¹Department of Prosthodontics/Dental Material Sciences, Sahlgrenska Academy, Institute of Odontology, University of Gothenburg, Gothenburg, Sweden. carina.johansson@odontologi.gu.se

Clinical Oral Implants Research

|July 5, 2011

Summary

Novel implant surfaces with hierarchical structures demonstrate superior bone integration. These advanced surfaces, featuring micro, submicro, and nanoscale features, enhance osseointegration compared to conventional implants.

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Last Updated: May 31, 2026

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Published on: August 13, 2019

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Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo

Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo

Published on: July 1, 2013

Area of Science:

Biomaterials Science
Orthopedic Research
Surface Engineering

Background:

Dental implant success relies on effective osseointegration.
Surface topography and chemistry significantly influence bone-to-implant bonding.
Hierarchically structured surfaces offer potential for enhanced biological response.

Purpose of the Study:

To evaluate bone-to-implant bonding of novel hierarchical surface modifications.
To correlate in vivo osseointegration with specific surface roughness parameters.
To compare novel implant surfaces against a commercial standard.

Main Methods:

Testing of novel implant surfaces in a rabbit model, compared to OsseoSpeed™ implants.
Surface characterization using scanning electron microscopy and X-ray photoelectron spectroscopy.
Biomechanical testing (removal torque) and histomorphometry (bone-to-implant contact) after 6 weeks, with multivariate statistical analysis.

Main Results:

Implants with hierarchical surface roughness (micro, submicro, nanoscale) showed significantly greater bone tissue integration.
Bone-to-implant contact (BIC) and removal torque (RTQ) values correlated positively with increased surface roughness (S(a)).
Novel AT-I and AT-II treated surfaces outperformed the commercial OsseoSpeed™ implant in osseointegration.

Conclusions:

Hierarchical surface structures with submicro cavities and nanoscale precipitates promote optimal osseointegration.
Multivariate analysis and novel quantification methods effectively distinguished the influence of multi-level surface roughness.
Surface engineering of implants is crucial for enhancing bone-to-implant bonding and clinical success.