Fig. 1From: Clinical outcome of narrow diameter dental implants: a 3-year retrospective studya Measurement of vertical and horizontal bone loss of peri-NDIs. A The point of first contact between the parallel extension line of the implant shoulder and the alveolar bone. B The contact point between the implant surface and the alveolar bone. b The postoperative clinical radiographs of NDIs. c The clinical radiographs of peri-implantitisBack to article page