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Type:	Artigo de Periódico
Title:	Relationship between implant stability on the abutment and platform level by means of resonance frequency analysis: a cross-sectional study
Authors:	Frederico Santos Lages Dhelfeson Willya Douglas-de-Oliveira Guilherme Siqueira Ibelli Fatimah Assaf Thallita Pereira Queiroz Fernando de Oliveira Costa
Abstract:	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.
Subject:	Dental implants Resonance frequency analysis Osseointegration
language:	eng
metadata.dc.publisher.country:	Brasil
Publisher:	Universidade Federal de Minas Gerais
Publisher Initials:	UFMG
metadata.dc.publisher.department:	FAO - DEPARTAMENTO DE CLÍNICA
Rights:	Acesso Aberto
metadata.dc.identifier.doi:	https://doi.org/10.1371/journal.pone.0181873
URI:	http://hdl.handle.net/1843/67499
Issue Date:	24-Jul-2017
metadata.dc.url.externa:	https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0181873
metadata.dc.relation.ispartof:	Plos One
Appears in Collections:	Artigo de Periódico

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