A comparison of implant stability quotients measured using magnetic resonance frequency analysis from two directions: a prospective clinical study during the initial healing period

ABSTRACT Objective The aim of this pilot study is to evaluate to value of primary implant stability for two-piece zirconia implants and longitudinally stability changes of implants during the healing period of 16 weeks. Materials and methods Ten patients treated with 12 two-piece non metallic zirconia dioxide root shape implant (4/10 mm, Axis Biodental, Les Bios, Switzerland) for single tooth replacement in the upper premolar area. Resonance frequency analysis (RFA) was used for assessment of longitudinally changes of implant stability during 16-weeks observing period. All patients have been re-evaluated 1 year after loading. Results Mean implant stability quotient (ISQ) value of initial implant stability for 12 implants was 60.25 (3.72). Statistically, significant decrease was noted in the first 3 weeks after insertion (p = 0.000). Also, statistically significant increasing of implant stability was recorded for observing period for 6th to 16th week. Conclusion Increasing of ISQ value during observing period suggests loading of two-piece zirconia dioxide root shape implant for single tooth replacement in the upper premolar area, after healing period of 4 months. How to cite this article Kokovic V, Rahman MM, Rahman B, Tattan M. Assessment of Implant Stability of Two-piece Zirconium Dioxide Implants using the Resonance Frequency Analysis: A Pilot Study. Int J Experiment Dent Sci 2015;4(2):87-94.

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Reliability of the Resonance Frequency Analysis Values in New Prototype Transepithelial Abutments: A Prospective Clinical Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17186733 ◽

2020 ◽

Vol 17 (18) ◽

pp. 6733

Author(s):

María Guerrero-González ◽

Francesca Monticelli ◽

David Saura García-Martín ◽

Mariano Herrero-Climent ◽

Blanca Ríos-Carrasco ◽

...

Keyword(s):

Resonance Frequency ◽

Frequency Analysis ◽

High Reliability ◽

Intraclass Correlation ◽

Correlation Coefficients ◽

Prospective Clinical Study ◽

Resonance Frequency Analysis ◽

Implant Stability ◽

Mean Values ◽

Implant Length

Resonance frequency analysis (RFA) requires abutment disconnection to monitor implant stability. To overcome this limitation, an experimental transepithelial abutment was designed to allow a SmartPeg to be screwed onto it, in order to determine the prototype abutments repeatability and reproducibility using Osstell ISQ and to assess whether implant length and diameter have an influence on the reliability of these measurements. RFA was conducted with a SmartPeg screwed directly into the implant and onto experimental abutments of different heights of 2, 3.5 and 5 mm. A total of 32 patients (116 implants) were tested. RFA measurements were taken twice for each group from mesial, distal, buccal and palatal/lingual surfaces. Mean values and SD were calculated and Intraclass Correlation Coefficients (ICC) (p < 0.05, IC 95%). The implant stability quotient (ISQ) mean values were 72.581 measured directly to implant and 72.899 (2 mm), 72.391 (3.5 mm) and 71.458 (5 mm) measured from the prototypes. ICC between measurements made directly to implant and through 2-, 3.5- and 5-mm abutments were 0.908, 0.919 and 0.939, respectively. RFA values registered through the experimental transepithelial abutments achieved a high reliability. Neither the implant length nor the diameter had any influence on the measurements’ reliability.

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Is gingival biotype a critical determinant of secondary stability of orthodontic mini-implants – A prospective clinical study using resonance frequency analysis

APOS Trends in Orthodontics ◽

10.25259/apos_105_2020 ◽

2020 ◽

Vol 10 ◽

pp. 245-252

Author(s):

Sayali Prashant Pradhan ◽

Supriya Nambiar ◽

Shravan Shetty ◽

Siddarth Shetty ◽

Nidhin Philip Jose

Keyword(s):

Resonance Frequency ◽

Frequency Analysis ◽

Prospective Clinical Study ◽

Longitudinal Assessment ◽

Resonance Frequency Analysis ◽

Implant Stability ◽

Mini Implants ◽

Significant Difference ◽

Gingival Biotype ◽

Secondary Stability

Objectives: The objectives of the study were to determine the association of gingival biotype and secondary stability of orthodontic mini-implants using resonance frequency analysis. Materials and Methods: Twenty patients, each receiving two mini-implants, were divided into two groups; thick and thin gingival biotype based on the thickness of gingiva before mini-implant placement. Implant stability was assessed at the time of placement; at the 1st, 2nd, 3rd, and 4th month by resonance frequency analysis. Peri-implant soft-tissue conditions were also examined at each month till 4 months interval using periodontal indices. Results: Thick and thin gingival biotype groups showed statistically different implant stability quotient (ISQ). Mini-implants showing signs of failure consistently displayed lesser ISQ. Statistically significant difference was observed in the scores of peri-implant indices of failure and no failure group of mini-implants. Conclusion: Mini-implants in thin gingival biotype are more susceptible to failure and peri-implantitis compared to thick gingival biotype. Longitudinal assessment of mini-implant stability may help predict failure so as to avoid long duration and cost of orthodontic treatment.

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Influence of Implant Dimensions and Position on Implant Stability: A Prospective Clinical Study in Maxilla Using Resonance Frequency Analysis

Applied Sciences ◽

10.3390/app9050860 ◽

2019 ◽

Vol 9 (5) ◽

pp. 860 ◽

Cited By ~ 4

Author(s):

Antonio Nappo ◽

Carlo Rengo ◽

Giuseppe Pantaleo ◽

Gianrico Spagnuolo ◽

Marco Ferrari

Keyword(s):

Resonance Frequency ◽

Dental Implant ◽

Frequency Analysis ◽

Primary Stability ◽

Prospective Clinical Study ◽

Resonance Frequency Analysis ◽

Implant Stability ◽

Implant Stability Quotient ◽

Implant Placement ◽

Implant System

Implant stability is relevant for the correct osseointegration and long-term success of dental implant treatments. The aim of this study has been to evaluate the influence of implant dimensions and position on primary and secondary stability of implants placed in maxilla using resonance frequency analysis. Thirty-one healthy patients who underwent dental implant placement were enrolled for the study. A total of 70 OsseoSpeed TX (Astra Tech Implant System—Dentsply Implants; Mölndal, Sweden) implants were placed. All implants have been placed according to a conventional two-stage surgical procedure according to the manufacturer instructions. Bone quality and implant stability quotient were recorded. Mean implant stability quotient (ISQ) at baseline (ISQ1) was statistically significant lower compared to 3-months post-implant placement (ISQ2) (p < 0.05). Initial implant stability was significantly higher with 4 mm diameter implants with respect to 3.5 mm. No differences were observed within maxilla regions. Implant length, diameter and maxillary regions have an influence on primary stability.

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What is the Effect of Implant-tooth Distance on Resonance Frequency Analysis Measurements?

International Journal of Experimental Dental Science ◽

10.5005/jp-journals-10029-1110 ◽

2015 ◽

Vol 4 (2) ◽

pp. 124-129

Author(s):

Mohammed Jasim Aljuboori ◽

Luiz Carlos Magno Filho ◽

Farah Saadi Al-Obaidi ◽

Hussein Ali Al-Wakeel ◽

Maan Ibrahim Al-Marzok

Keyword(s):

Resonance Frequency ◽

Frequency Analysis ◽

Resonance Frequency Analysis ◽

Implant Stability ◽

Pearson’S Correlation ◽

Healing Period ◽

Pearson's Correlation ◽

Correlation Tests ◽

The Mean

ABSTRACT Objectives The volume and density of the bone surrounding an implant directly affect the implant stability during the healing period. The aim of this study was to determine the correlations between resonance frequency analysis (RFA) readings and implant-tooth distances at the crestal and average apicalcrestal levels. Materials and methods Nine patients received 22 implants. Periapical radiographs were taken at 6 weeks, and the implant-tooth mesial and distal crestal level distances were measured, along with the mesial and distal apical levels. The average mesial (AM) and average distal (AD) apical-crestal distances were calculated. In cases in which either the AM or the AD of the implant was below 4 mm, the specimens were placed in the AMD– group; when both the AM and the AD were greater than 4 mm, the specimens were placed in the AMD+ group. The lower values were used for both groups. Resonance frequency analysis measurements were taken in the mesiodistal direction at 6 weeks. The correlations between the mean RFAs and the means of the distances were examined using Spearman's or Pearson's correlation tests, depending on the distributions of the data. Results The mean and SD of the AD group was 3.99 ± 3.19. The mean and SD of the AM group was 3.80 ± 2.67. The mean and SD of the AD– group was 2.72 ± 0.89. The mean and SD of the AD+ group was 6.34 ± 2.94. The mean and SD of the RFAs at 6 weeks was 77.82 ± 5.24, and for the AMD– and AMD+ groups, these measures were 78 ± 5.55 and 77.64 ± 5.36, respectively. None of the correlations between the RFAs and any of the distances were significant: AD (r = 0.114; Pearson's test, p < 0.05), AM (r = – 0.217; Spearman's test p < 0.05), AMD– (r = 0.248; Pearson's test, p < 0.05), and AMD+ (r = 0.3; Spearman's test, p < 0.05). Conclusion Within the limitations of this study, no correlations between the RFA readings and the implant-tooth distances were found at any level or distance. How to cite this article Aljuboori MJ, Filho LCM, Al-Obaidi FS, Al-Wakeel HA, Al-Marzok MI. What is the Effect of Implant-tooth Distance on Resonance Frequency Analysis Measurements? Int J Experiment Dent Sci 2015;4(2):124-129.

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Osstell Resonance Frequency Measurement Values as a Prognostic Factor in Implant Dentistry

Journal of Oral Implantology ◽

10.1563/aaid-joi-d-13-00172 ◽

2015 ◽

Vol 41 (4) ◽

pp. e133-e137 ◽

Cited By ~ 6

Author(s):

Tim Krafft ◽

Friedrich Graef ◽

Matthias Karl

Keyword(s):

Clinical Study ◽

Resonance Frequency ◽

Private Practice ◽

Prognostic Value ◽

Frequency Measurement ◽

Prospective Clinical Study ◽

Resonance Frequency Analysis ◽

Implant Stability ◽

Implant Dentistry ◽

Level Of Significance

Resonance frequency analysis (RFA) using the Osstell device (Osstell AB, Gothenburg, Sweden) has been advocated for quantifying implant stability on a relative scale of implant stability quotients (ISQ). It was the goal of this prospective clinical study to evaluate whether a certain ISQ level, at the time an implant is placed, correlates with successful osseointegration as some have claimed. Four hundred ninety-five implants (Straumann AG, Basel, Switzerland), varying in length and diameter, were placed in a private practice, strictly adhering to the implant manufacturer's surgical protocol. After placement and after healing periods of 42 days in the mandible and 56 days (implant manufacturer's protocol) in the maxilla, implant stability was measured using RFA. After healing, implants were torqued forward at 35 Ncm and allowed to heal further if the patients felt discomfort. Statistical analysis of the data obtained was based on Welch tests and Kolmogorov-Smirnow tests (level of significance α = 0.05). Results showed that 432 implants were osseointegrated after the predefined healing periods while 8 implants were lost and, in 55 cases, healing was prolonged. Both at insertion (P = .025) and after healing (P < .001), successful implants showed significantly different ISQ values as compared to implant failures or implants with prolonged healing. However, overlapping ISQ distributions at implant insertion demonstrated that there was no correlation among the data that could be used to predict successful osseointegration. Within the limits of this study, the prognostic value of ISQ values appears to be ambiguous.

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