1. Park S, Da Silva J, Weber H, Ishikawa-Nagai S. Optical phenomenon of peri-implant soft tissue. Part I. Spectrophotometric assessment of natural tooth gingiva and peri-implant mucosa. Clin Oral Implants Res. 2007 Oct;18(5):569-74. Epub 2007 Jul 26.
2. Gil M, Ishikawa-Nagai S, Elani H. A prospective clinical trial to assess the optical efficacy of pink neck implants and pink abutments on soft tissue aesthetics. J Esthet Restor Dent. 2017;29(6):1-7.38.
3. Gil M, Ishikawa-Nagai S, Elani H, Da Silva J, Kim D, Tarnow D, Schulze-Späte U, Cleber S, Bittner N. Comparison of the Color Appearance of Peri-implant Soft Tissue with Natural Gingiva Using Anodized Pink-Neck Implants and Pink Abutments: A Prospective Clinical Trial. Int J Oral Maxillofac Implants. 2019 May/June;34(3):752–758.
4. Bittner N, Schulze-Späte U, Cleber S, Da Silva J, Kim D, Tarnow D, Ishikawa-Nagai S, Gil M. Comparison of Peri-implant Soft Tissue Color with the Use of Pink-Neck vs Gray Implants and Abutments Based on Soft Tissue Thickness: A 6-Month Follow-up Study. Int J Prosthodont. 2020 Jan/Feb;33(1):29-38.
5. Schupbach P, Roland G. The defense architecture of the human periimplant mucosa: A histological study. J Prosthet Dent 2007; 97: S15-S25.
6. Zigterman B, Van den Borre C, Braem A, Mommaerts M. Titanium surface modifications and their soft tissue interface on nonkeratinized soft tissues—A systematic review. Biointerphases, Vol. 14, No. 4, Jul/Aug 2019.
7. Mussano F, Genova T, Laurenti M, Zicola E, Munaron L, Rivolo P, Mandracci P, Carossa S. Early Response of Fibroblasts and Epithelial Cells to Pink-Shaded Anodized Dental Implant Abutments: An In-vitro Study. Int J Oral Maxillofac Implants. 2018 May/Jun;33(3):571-579.
8. Ishikawa-Nagai S, Da Silva J, Weber H, Park S. Optical phenomenon of peri-implant soft tissue. Part II. Preferred implant neck color to improve soft tissue aesthetics. Clin Oral Impl Res. 18, 2007; 575-580.