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. 2024 Feb;10(1):e833.
doi: 10.1002/cre2.833.

A longitudinal analysis of the impact of nonsurgical and surgical treatment of peri-implantitis upon clinical parameters and implant stability quotient values. A 2-3-year follow-up

Peter Harrison  1 , Edward Madeley  1 , Michael Nolan  1 , Stefan Renvert  1   2   3 , Ioannis Polyzois  1
Affiliations

A longitudinal analysis of the impact of nonsurgical and surgical treatment of peri-implantitis upon clinical parameters and implant stability quotient values. A 2-3-year follow-up

Peter Harrison et al. Clin Exp Dent Res. 2024 Feb.

Abstract

Objectives: In this study, the aim was to investigate the medium- to long-term impact of peri-implantitis treatment upon clinical parameters and implant stability quotient values and to ascertain if magnetic resonance frequency analysis can be used as a diagnostic tool to demonstrate postoperative healing following treatment of peri-implantitis.

Materials and methods: A total of n = 26 patients (n = 86 implants) diagnosed with peri-implantitis were recruited for this prospective cohort study and four different treatment modalities were used. Baseline measurements of a number of clinical parameters as well as implant stability measurements in the form of ISQ were recorded. These measurements were repeated at 6, 12, and 24-36 months following treatment. Analysis of variance was performed for all implants treated as well as separately for each treatment modality. A regression model was also used to determine factors affecting ISQ measurements over time.

Results: Treatment of peri-implantitis resulted in significant improvements of both average PPDs and BOP (p < .0001 and p < .01). ISQ values marginally improved initially for all treatment modalities, but improvement was only maintained for 2-3 years in treatment modalities I (+1.28), III (+1.49), and IV (+2.92). There was a statistically significant negative linear correlation between average PPD and the ISQ values recorded both at baseline (r = -.618, p < 0.0001) and at 2/3 years (r = -.604, p < 0.0001).

Conclusion: Over the 2-3-year follow-up period, all four treatment modalities led to improved clinical and radiographic peri-implant parameters but implant stability posttreatment, as indicated by the fact that the recorded ISQ scores remained stable. As a result, use of MRFA as an adjunct to the traditionally used periodontal and radiographic tools for the evaluation of postoperative implant stability following the treatment of peri-implant disease cannot be recommended.

Keywords: L-PRF; dental implants; peri-implantitis; surgical treatment.

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Conflict of interest statement

Prof Renvert receives research grants and fees from Geistlich Pharma outside the present work. The remaining authors declare no conflict of interest.

Figures

Figure 1
Figure 1
QQ plot and residual diagnostics for the regression model.
Figure 2
Figure 2
Mean ISQ values for all time points and for the four treatment modalities.
See this image and copyright information in PMC

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