The Influence of Abutment Macro-design on Peri-implant Tissue Dimensions for Guided Placed and Restored Implants :
Author | : Mohammed AlRubaie |
Publisher | : |
Total Pages | : 202 |
Release | : 2021 |
ISBN-10 | : OCLC:1284998049 |
ISBN-13 | : |
Rating | : 4/5 (49 Downloads) |
Book excerpt: Introduction: For optimal dental implant esthetics, the transition of a circumferential implant platform to a proper cervical anatomy has been emphasized. This transition is facilitated by the macro-design of the transmucosal portion of the abutment-restoration complex at the provisional and final stages of implant prosthetic therapy. There is limited information from human studies assessing the impact of abutment macro-design on peri-implant tissue dimensional changes. Aim: The aim of this work was to evaluate the peri-implant tissue levels over a 3-year period for implants connected to either convex or concave final abutments at the time of implant placement. Methods: Twenty-eight patients with one missing maxillary premolar were randomly allocated to receive one single implant with abutments of different emergence shape configuration. Patients of the CX Group had abutments with convex emergence shape and patients of the CV Group had abutments with concave emergence shape. Clinical and radiographic data were collected at the time of implant placement (T0), final prosthesis delivery (T1), 12 months following implant placement (T2), and 36 months after implant placement (T3). Results: At a 3 year follow up, the mean sub-crestal implant position change was -0.69mm (0.48) in the CX group and -0.16mm (0.22) (p