Soft tissue integration around dental implants: A pressing priority
Revathi Alexander, Xiaohua Liu
Abstract
While osseointegration has traditionally been the focal point of dental implant design, recent research highlights the equally crucial role of establishing a resilient and biologically integrated soft tissue seal for long-term implant success. This review critically examines recent advances (primarily from the past five years) that elucidate the molecular, cellular, and materials science strategies essential for enhancing peri-implant soft tissue integration. Key factors include precisely engineered surface topographies at micro- and nanoscale levels, surface chemical modifications that enhance wettability and protein adsorption, and biomimetic coatings incorporating extracellular matrix-derived peptides, chemokines, and growth factors. Recent studies underscore the impact of laser micro- and nano-texturing, plasma treatments, and biofunctionalization in modulating fibroblast and epithelial cell behaviors, accelerating tissue attachment, and mitigating early inflammatory responses. Emerging implant-abutment designs, such as platform switching and transmucosal zirconia abutments, demonstrate improved soft tissue stability and reduce crestal bone loss. Additionally, the immunomodulatory potential of next-generation materials offers promising avenues for directing macrophage polarization and enhancing wound resolution. Collectively, this review synthesizes the latest evidence on material-driven and biological strategies for engineering a stable soft tissue interface. It provides a translational roadmap for the development of implant systems optimized for long-term soft tissue health, addressing a critical unmet need in dental implantology.