Transgingival implants with a convergent collar (PRAMA); surgical and screwed prosthetic approach. A case report

This article presents a case report of transmucosal implant with a convergent collar (PRAMA) inserted in the anterior maxillary esthetic area. The purpose of this study is to evaluate soft and hard tissue after 12 months. One implant was placed in the esthetic area. The implant was immediately loaded with a screwed provisional prosthesis. After 3 months the definitive screwed prosthesis was inserted. The patient was reassessed 12 months post-implant placement, and during the examination, the soft-tissue texture, color, and amount of keratinized tissue was checked. No statistically significant horizontal dimensional changes of the alveolar ridge were observed between each time-point. Mean soft tissue levels significantly improved between base-line and 12 months. The reduced buccal width of the transmucosal component gives more space to the gingival thickness and promotes stability and give a better seal. The use of transmucosal implant creates a shift of the inflammatory cell infiltrate away from the crestal bone level.