Related Experiment Video
Updated: May 13, 2026
Effects of Mechanical Methods Used in Peri-implantitis Treatment on Implant Surface Decontamination and Roughness
Published on: March 14, 2025
In vivo and in vitro studies of epithelial cell behavior around titanium implants with machined and rough surfaces
Ikiru Atsuta1, Yasunori Ayukawa, Akihiro Furuhashi
1Section of Implant and Rehabilitative Dentistry, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Fukuoka, Japan; Center for Craniofacial Molecular Biology, University of Southern California School of Dentistry, Los Angeles, California, USA.
Background:
The surface roughness of a dental implant affects the epithelial wound healing process and may significantly enhance implant prognosis.
Purpose:
We explored the influence of surface roughness on peri-implant epithelium (PIE) sealing and down-growth by comparing machine-surfaced (Ms) and rough-surfaced (Rs) implants.
Materials And Methods:
(1) Maxillary first molars were extracted from rats and replaced with Ms or Rs implants. (2) We also compared changes in the morphology of cultured rat oral epithelial cells (OECs) grown on Ms or Rs titanium (Ti) plates.
Results:
(1) After 4 weeks, the PIE around Ms and Rs implants showed a similar structure to junctional epithelium (JE). At 16 weeks, Rs implants appeared to form a weak epithelial seal at the tissue-implant interface and exhibited markedly less PIE down-growth than Ms implants but was deeper than that observed in natural teeth. (2) We observed less expression of adhesion proteins in OECs cultured on Rs plates than in cells grown on Ms plates. Additionally, cell adherence, migration, and proliferation on Rs plates were lower, whereas apoptosis was reduced on Ms plates.
Conclusion:
Ms implants are a better choice for integration with an epithelial wound healing process.
