Abstract: The morphological and functional stability of the soft tissue surrounding the implant is the core guarantee for the success and aesthetic effect of implant repair. At present, a large number of studies have confirmed that keratinized mucosal width (≥2 mm), mucosal thickness (≥2 mm), height of soft tissue on the crest (3-4 mm), and thickness of peri-implant bone (≥2 mm) can significantly reduce the incidence of peri-implantitis, reduce early marginal bone resorption, and improve the red and white aesthetic score at aesthetic zone. Based on the principles of evidence-based medicine, this article systematically explores the composition, clinical significance, and key influencing factors of peri-implantitis phenotype, covering the entire process management from minimally invasive tooth extraction, implantation timing selection, and soft and hard tissue intervention, providing theoretical basis and practical guidance for the development of precise and minimally invasive implant repair strategies in clinical practice.

Key words: dental implant, peri-implant phenotype, management of peri-implant soft and hard tissue