Fig. 1From: Effects of crown-to-implant ratio on marginal bone level and bone density in non-splinted single implants: a cross-sectional studyPeri-implant diseases and conditions. A Peri-implant health of the maxillary first molar. B Peri-implant mucositis with bleeding on probing of the maxillary molars. C Peri-implantitis with bone loss of the mandibular first molarBack to article page