Clinical Performance of a Novel Two-Piece Abutment Concept: Results from a Prospective Study with a 1-Year Follow-Up.

Giacomo Fabbri,Oscar González-Martin,Tristan Staas,Valda Valantiejiene,Eric Rompen,Tomas Linkevicius

doi:10.3390/jcm10081594

Giacomo Fabbri, Oscar González-Martin + Show 4 more

Open Access

https://doi.org/10.3390/jcm10081594

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Abstract

Development of a stable and healthy soft-tissue barrier around dental implants is key to long-term success of implant-supported prostheses. The novel two-piece abutment concept shifts the prosthetic interface to the soft-tissue level to protect bone interface/connective tissue during the healing phase and restorative procedures. This prospective study included 72 patients treated with 106 implants to support a single-tooth or a three-unit bridge restored with two-piece abutments. The evaluation included marginal bone level change (MBLC), implant and prosthetic survival, soft-tissue health including keratinized mucosa height and mucosal margin position, patient quality of life (QoL) and satisfaction, and clinician satisfaction and ease-of-use rating of the concept. Mean MBLC from implant placement to 1 year was −0.36 ± 1.26 mm (n = 89), the 1-year implant and prosthetic survival rates were 97.1 and 96.7%, respectively, while keratinized mucosa height increased from 2.9 ± 1.2 mm at prosthetic delivery to 3.2 ± 1.3 mm, and mucosal margin migrated coronally by 0.49 ± 0.61 mm by 1 year. Patient satisfaction and QoL were high. Clinicians were satisfied with the esthetic and functional results and rated the concept as easy to use. In conclusion, the novel two-piece abutment concept promotes good peri-implant tissue health, while providing an easy-to-use workflow and high treatment satisfaction to both patients and clinicians.

Highlights

Dental caries and tooth loss remain the most prevalent and consequential oral diseases with a global health and economic burden [1]
The novel two-piece abutment concept shifts the prosthetic interface to the soft-tissue level to protect bone interface/connective tissue during the healing phase and restorative procedures. This prospective study included 72 patients treated with 106 implants to support a single-tooth or a three-unit bridge restored with two-piece abutments
Mean marginal bone level change (MBLC) from implant placement to 1 year was −0.36 ± 1.26 mm (n = 89), the 1-year implant and prosthetic survival rates were 97.1 and 96.7%, respectively, while keratinized mucosa height increased from 2.9 ± 1.2 mm at prosthetic delivery to 3.2 ± 1.3 mm, and mucosal margin migrated coronally by 0.49 ± 0.61 mm by 1 year

Summary

Introduction

Dental caries and tooth loss remain the most prevalent and consequential oral diseases with a global health and economic burden [1]. Necessity to treat these diseases has driven rapid development of technologies and materials applied in restorative dentistry. Modern dental materials such as lithium disilicate or zirconia have become the preferred choice due to their high esthetics and excellent mechanical properties [2]. The extent of early bone remodeling, i.e., the remodeling that takes place immediately after implant placement, depends on soft tissues thickness, collar surface and macro-design, implant drilling protocol, surgical trauma and possible infections, restorative materials, abutment surface/design, and its connection protocol [10,11,12,13,14,15,16,17]

Results

Discussion

Conclusion