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

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.

scholarly journals Does Implant Design Affect Implant Primary Stability? A Resonance Frequency Analysis–Based Randomized Split-Mouth Clinical Trial

2015 ◽  
Vol 41 (6) ◽  
pp. e281-e286 ◽  
Author(s):  
Sergio Alexandre Gehrke ◽  
Ulisses Tavares da Silva ◽  
Massimo Del Fabbro
Keyword(s):  
Standard Deviation ◽  
Resonance Frequency ◽  
Frequency Analysis ◽  
Primary Stability ◽  
Implant Design ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
The Mean ◽  
Group 2 ◽  
Group 1

The purpose of this study was to assess implant stability in relation to implant design (conical vs. semiconical and wide-pitch vs narrow-pitch) using resonance frequency analysis. Twenty patients with bilateral edentulous maxillary premolar region were selected. In one hemiarch, conical implants with wide pitch (group 1) were installed; in the other hemiarch, semiconical implants with narrow pitch were installed (group 2). The implant allocation was randomized. The implant stability quotient (ISQ) was measured by resonance frequency analysis immediately following implant placement to assess primary stability (time 1) and at 90 days after placement (time 2). In group 1, the mean and standard deviation ISQ for time 1 was 65.8 ± 6.22 (95% confidence interval [CI], 55 to 80), and for time 2, it was 68.0 ± 5.52 (95% CI, 57 to 77). In group 2, the mean and standard deviation ISQ was 63.6 ± 5.95 (95% CI, 52 to 78) for time 1 and 67.0 ± 5.71 (95% CI, 58 to 78) for time 2. The statistical analysis demonstrated significant difference in the ISQ values between groups at time 1 (P = .007) and no statistical difference at time 2 (P = .54). The greater primary stability of conical implants with wide pitch compared with semiconical implants with narrow pitch might suggest a preference for the former in case of the adoption of immediate or early loading protocols.

scholarly journals Assessment of Implant Stability of Two-piece Zirconium Dioxide Implants using the Resonance Frequency Analysis: A Pilot Study

2015 ◽  
Vol 4 (2) ◽  
pp. 87-94
Author(s):  
Mustafa Tattan ◽  
Vladimir Kokovic ◽  
Muhammed Mustahsen Rahman ◽  
Betul Rahman
Keyword(s):  
Pilot Study ◽  
Resonance Frequency ◽  
Frequency Analysis ◽  
Zirconium Dioxide ◽  
Tooth Replacement ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Healing Period ◽  
Single Tooth ◽  
Zirconia Implants

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.

scholarly journals Is It Possible to Monitor Implant Stability on a Prosthetic Abutment? An In Vitro Resonance Frequency Analysis

2020 ◽  
Vol 17 (11) ◽  
pp. 4073
Author(s):  
Paula López-Jarana ◽  
Carmen María Díaz-Castro ◽  
Artur Falcão ◽  
Blanca Ríos-Carrasco ◽  
Ana Fernandez-Palacín ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Frequency Analysis ◽  
Mean Value ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Implant Stability Quotient ◽  
The Mean ◽  
The One ◽  
Implant System

In order to apply the “one-abutment–one-time” concept, we evaluated the possibility of measuring resonance frequency analysis (RFA) on the abutment. This trial aimed to compare the Implant Stability Quotient (ISQ) values obtained by the PenguinRFA when screwing the transducer onto the implant or onto abutments with different heights and angulations. Eighty implants (VEGA®, Klockner Implant System, SOADCO, Les Escaldes, Andorra) were inserted into fresh bovine ribs. The groups were composed of 20 implants, 12 mm in length, with two diameters (3.5 and 4 mm). Five different abutments for screwed retained restorations (Permanent®) were placed as follows: straight with 1, 2, and 3 mm heights, and angulated at 18° with 2 and 3 mm heights. The mean value of the ISQ measured directly on the implant was 75.72 ± 4.37. The mean value of the ISQ registered over straight abutments was 79.5 ± 8.50, 76.12 ± 6.63, and 71.42 ± 6.86 for 1, 2, and 3 mm height abutments. The mean ISQ over angled abutments of 2 and 3 mm heights were 68.74 ± 4.68 and 64.51 ± 4.53 respectively. The present study demonstrates that, when the ISQ is registered over the straight abutments of 2 and 3 mm heights, the values decrease, and values are lower for angled, 3 mm height abutments.

scholarly journals Determination of implant stability by resonance frequency analysis device during early healing period

2014 ◽  
Vol 3 (3) ◽  
pp. 169 ◽  
Author(s):  
KLakshmi Kanth ◽  
DNarasimha Swamy ◽  
TKrishna Mohan ◽  
Chakrapani Swarna ◽  
Sahitya Sanivarapu ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Frequency Analysis ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Healing Period ◽  
Early Healing

scholarly journals Does the manual insertion torque of smartpegs affect the outcome of implant stability quotients (ISQ) during resonance frequency analysis (RFA)?

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Ingrid Kästel ◽  
Giles de Quincey ◽  
Jörg Neugebauer ◽  
Robert Sader ◽  
Peter Gehrke
Keyword(s):  
Resonance Frequency ◽  
Frequency Analysis ◽  
Insertion Torque ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Reliable Determination ◽  
Torque Values ◽  
Finger Pressure

Abstract Background There is disagreement about the optimal torque for tightening smartpegs for resonance frequency analysis (RFA). Subjective finger pressure during hand tightening could affect the reliability of the resulting values. The aim of the current study was therefore to assess whether or not the insertion torque of a smartpeg magnetic device influences the implant stability quotient (ISQ) value during RFA. Methods Thirty self-tapping screw implants (XiVE S, Dentsply Sirona Implants, Bensheim, Germany) with a diameter of 3.8 mm and a length of 11 mm were inserted in three cow ribs with a bone quality of D1. The RFA value of each implant was measured (Ostell, FA W&H Dentalwerk, Bürmoos, Austria) in two orthogonal directions (mesial and buccal) after tightening the corresponding smartpeg type 45 with a mechanically defined value of 5 Ncm (Meg Torq device, Megagen, Daegu, South Korea) (test). Additionally, 4 different examiners measured the RFA after hand tightening the smartpegs, and the results were compared (control). Insertion torque values were determined by measuring the unscrew torque of hand seated smartpegs (Tohnichi Manufacturing Co. Ltd, Tokyo, Japan). Results The ISQ values varied from 2 to 11 Ncm by hand tightening and from 2 to 6 Ncm by machine tightening. The comparison of hand and machine tightening of smartpegs displayed only minor differences in the mean ISQ values with low standard deviations (mesial 79.76 ± 2,11, buccal 77.98 ± 2,) and no statistical difference (mesial p = 0,343 and buccal p = 0,890). Conclusions Manual tightening of smartpeg transducers allows for an objective and reliable determination of ISQ values during RFA.

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