Monolithic zirconia single tooth implant‐supported restorations with CAD/CAM titanium abutments in the posterior region: A 1‐year prospective case series study

Abstract

To assess the clinical, radiographic, and patient-reported outcome measures, including the success of screw-retained monolithic zirconia implant-supported restorations with CAD/CAM titanium abutments in the posterior region during a 1-year follow-up.Methods: In a prospective case series, 50 molar sites in the posterior region of 46 patients with a minimum age of 18 years and sufficient bone volume and anatomical conditions for placing an implant (≥8 mm) and an anatomical restoration were included. Parallel-walled implants with a conical connection were inserted in a twostage surgical procedure. Implant uncovering and healing abutment placement occurred 12 weeks after insertion. Two weeks after mucosa healing, a screw-retained monolithic zirconia restoration with a CAD/CAM titanium abutment was placed.Clinical, radiographic, and patient-reported outcome measures were collected at baseline before implant placement and then during the 1 month and 1 year follow-ups.Results: At the 1 year follow-up, 49 restorations could be evaluated. The plaque accumulation, presence of calculus, bleeding tendency and peri-implant inflammation indices were low, representing healthy peri-implant conditions. The mean marginal bone level change between the 1 month and the 1 year follow-up was À0.17 ± 0.46 mm. The mean patient satisfaction was high. The restoration success was, according to the modified USPHS criteria, 95.9%. Conclusion:Monolithic zirconia implant-supported restorations with CAD/CAM titanium abutments have very good clinical, radiographic and patient-reported outcomes after 1 year in function.

CAD/CAM Abutments in the Esthetic Zone: A Systematic Review and Meta-Analysis of Soft Tissue Stability

“…After duplicate removal and title/abstract screening, 19 articles were selected for full-text analysis. Hence, 13 studies were excluded for the following reasons: the aim of the study was inconsistent with the aim of the systematic review [16,[26][27][28][29][30][31][32][33][34][35], overlapping data/same cohort [36] and the study design was inconsistent with the inclusion criteria [37]. The reasons for exclusion are available in Supplementary Table S2.…”

Fifteen-year recall period on zirconia-based single crowns and fixed dental prostheses. A prospective observational study

“…Therefore, it is possible to hypothesize that using permanent cement for implant-supported crowns may improve the long-term clinical outcomes. Screw-retained monolithic zirconia implant-supported restorations with CAD/CAM titanium abutments in the posterior region during a 1-year follow-up were studied by Donker et al and had survival rate of 100% for both implants and restorations with low technical and biological complications [ 22 ].…”

Screwed Monolithic Zirconia Crowns for Mono-Implant Posterior Rehabilitation: A Prospective Clinical Study on 41 Patients with a 7-Year Follow-Up

“…It is important to consider that although there are too many studies conducted on such kinds of restorations, there is a lack of studies that evaluate monolithic zirconia with standardized USPHS parameters, exclusively the single-crown screwed-on implants are evaluated; thus, it was mandatory to compare our results to studies conducted on FDP or veneered zirconia. The studies that evaluated that specific population of prosthetic restoration have short-term follow-ups, with a maximum of three years [14,24,25]. In the first year of evaluation, each patient showed excellent parameters (41 on 41 alpha), which have to be considered better outcomes than the 1-year follow-up study of Pol et al, who reported bravo percentages of 21.4% and 3.6% regarding the marginal adaption and the opening of the anatomical morphology, respectively; however, they reported 100% survival, which is consistent with this study [26].…”