1. 1. Kasemo B, Lausmaa J. Metal selection and surface characteristics. In Branemark PI, Zarb GA, Albrektsson T, eds. Tissue-integrated prostheses: osseointegration in clinical dentistry. Chicago: Quintessence; 1985. pp99-116.
2. 2. Wei H, Tomotake Y, Nagao K, et al. Implant prostheses and adjacent tooth migration: preliminary retrospective survey using 3-dimensional occlusal analysis. Int J Prosthodont. 2008;21:302-304.
3. 3. Koori H, Morimoto K, Tsukiyama Y, et al. Statistical analysis of the diachronic loss of interproximal contact between fixed implant prostheses and adjacent teeth. Int J Prosthodont. 2010;23:535-540.
4. 4. Wat PY, Wong AT, Leung KC, et al. Proximal contact loss between implant-supported prostheses and adjacent natural teeth: a clinical report. J Prosthet Dent. 2011;105:1-4. (accessed 2019 Jan 15) Available from: https//doi.org/10.1016/S0022-3913(10)00174-5.
5. 5. Byun SJ, Heo SM, Ahn SG, et al. Analysis of proximal contact loss between implant-supported fixed dental prostheses and adjacent teeth in relation to influential factors and effects. A cross-sectional study. Clin Oral Implants Res. 2015;26:709-714. (accessed 2019 Feb 23) Available from: https//doi.org/10.1111/clr.12373.