A prospective clinical pilot study was carried out to evaluate a novel macroimplant design with a 12-degree angled platform. Twelve patients were enrolled in an immediate implant placement procedure with immediate esthetic rehabilitation to replace an anterior maxillary tooth and were treated with implants having an inverted body-shift design with a 12-degree angled neck. Only type I sockets (according to the Elian classification) were considered eligible for the study. The implant was placed at the center of the socket to optimize the alveolar bone and idealize the prosthetic emergence profile. There were no implant failures after 1 year of loading. Regarding the horizontal and vertical hard tissue changes, there was a statistically significant median overall horizontal change of –0.99 mm at 1 mm and –0.61 mm at 3 mm. On the other hand, outcomes were stable at 5 mm, and there was no statistical significance. The median pink esthetic score at the 1-year follow-up was 11.5. This implant may be useful in immediate tooth replacement at maxillary anterior postextraction sockets. Nevertheless, comparative studies with conventional implants should be performed.
Keywords: Co-Axis implant, implant angulation, inverted body-shift design, marginal bone loss, success rate
