A prospective clinical cohort study analyzing single-unit implant crowns after three years of loading: introduction of a novel Functional Implant Prosthodontic Score (FIPS).

Joda, Tim Alexander; Ferrari, Marco; Brägger, Urs (2017). A prospective clinical cohort study analyzing single-unit implant crowns after three years of loading: introduction of a novel Functional Implant Prosthodontic Score (FIPS). Clinical oral implants research, 28(10), pp. 1291-1295. Wiley-Blackwell 10.1111/clr.12955

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OBJECTIVES

The aim of this prospective clinical cohort study was to validate implant crowns with a novel Functional Implant Prosthodontic Score (FIPS).

MATERIAL AND METHODS

Twenty patients were restored with cement-retained crowns on soft tissue level implants (Institut Straumann AG, Basel, Switzerland) in posterior sites and annually followed-up for 3 years. FIPS was applied for the objective outcome assessment including clinical and radiographic examinations. Five variables were defined for evaluation, resulting in a maximum score of 10 per implant restoration. The patients' level of satisfaction was recorded and correlated with FIPS.

RESULTS

All implants and connected crowns revealed survival rates of 100% without any biological or technical complications after three years of loading. The mean total FIPS score was 7.8 ± 1.5, ranging from 6 to 10. The variable "bone" revealed the highest scores (2 ± 0; range: 2-2), followed by "occlusion" (1.9 ± 0.1; range: 1-2). Mean scores for "design" (1.2 ± 0.6; range: 0-2), "mucosa" (1.3 ± 0.7; range: 0-2), and "interproximal" (1.4 ± 0.4; range: 1-2) were more challenging to satisfy. The patients expressed a high level of functional satisfaction (84.1 ± 9.5; range: 68-100). A significant correlation was found between FIPS and the subjective patients' perception with a coefficient of 0.88 (P < 0.0001).

CONCLUSIONS

The findings of the clinical trial indicated the potential of FIPS as an objective and reliable instrument in assessing implant success. FIPS can be considered as a supportive tool to validate a satisfactory outcome as perceived by patients, to identify possible failure risks, and to compare follow-up observations.

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