Relationship between implant stability on the abutment and platform level by means of resonance frequency analysis: a cross-sectional study
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Universidade Federal de Minas Gerais
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Artigo de periódico
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Resumo
Resonance frequency analysis (RFA) has become the main tool used to assess the
osseointegration of dental implants. The objective of this study was to verify the relationship
between the ISQ values with different prosthetic abutments and with the implant platform.
The hypothesis was that ISQ values changes according to the abutment height. Twelve
patients were included, whose contribution to the study was 31 dental implants (external
hexagon connection implants, 4.1x10 mm). The temporary implant-supported crown and
prosthetic components were removed and the following smartpegs were inserted, one at a
time: type 1, in the implant platform (G1); type A3, in the microunit component with 1mm
transmucosal height (G2) and type A3, in the microunit component with 5mm transmucosal
height (G3). In all the smartpegs, RFA measurements were taken on mesial, distal, buccal
and lingual surfaces. All evaluations were performed by a single calibrated examiner (ICC =
0.989). Data were analyzed by Friedman and Spearman correlation tests and log-linear
marginal regression (p<0.05). The mean age of participants was 52.83 (± 3.77) years.
There was statistically significant difference (p<0.001) among the mean ISQ of G1 (88.27
±5.70); G2 (72.75 ±4.73) and G3 (66.33 ±3.67). There was statistically significant negative
correlation between the ISQ and the measurement distance (rs:-0.852; p<0.001; R2:0.553).
Measurement distance was significantly associated (p<0.001) with ISQ value in the log-lin ear regression. The abutment height has a significant impact on resonance frequency analy sis measurements. The higher the transmucosal abutment height, the lower the implant
stability quotient value. Clinically, the ISQ measured on the abutment cannot be compared
with values measured on the implant platform.
Abstract
Assunto
Dental implants, Resonance frequency analysis, Osseointegration
Palavras-chave
resonance frequency analysis, implant stability, abutment level
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https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0181873