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

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.

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

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.

Assessment of Dental Implant Stability in Areas Previously Submitted to Maxillary Sinus Elevation

2018 ◽  
Vol 44 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Karine Câmara Silva ◽  
Elton Gonçalves Zenóbio ◽  
Paulo Eduardo Alencar Souza ◽  
Rodrigo Villamarim Soares ◽  
Maurício Greco Cosso ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Maxillary Sinus ◽  
Frequency Analysis ◽  
Insertion Torque ◽  
Sinus Lift ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Air Motor ◽  
Implant Stability Quotient ◽  
Secondary Stability

This study aimed to compare the primary and secondary stability, measured by resonance frequency analysis (RFA), in implants of different lengths installed in areas submitted to maxillary sinus lift. Correlation between RFA and implant insertion torque was also assessed. Twenty implants of 9 and 11 mm were inserted in areas submitted to maxillary sinus lift. The insertion torque was measured by the Bien Air motor. Osstell, through RFA, determined the implant stability quotient (ISQ) 2 times: the day of implant installation (T1) and 90 days after implant installation (T2). No differences were observed in the ISQ between T1 and T2 when the 20 implants were grouped, nor when the 9 mm implants were evaluated separately. In contrast, when the 11 mm values were evaluated separately, the ISQ was significantly higher in T2 than in T1 (P &lt; .05). In T1, 9 mm implants had a higher ISQ than 11 mm ones (P &lt; .05), whereas in T2, the implants of 11 mm showed a higher ISQ than did the 9 mm implants (P &lt; .05). There was no difference in insertion torque between 9 and 11 mm implants (P &gt; .05), nor was there a correlation between ISQ and insertion torque (P &gt; .05). In conclusion, longer implants (11 mm) presented a significant increase in ISQ values during the healing period when installed in areas previously submitted to maxillary sinus lift. This phenomenon was not observed for shorter implants (9 mm). Finally, no correlation was observed between ISQ and insertion torque.

scholarly journals Measurement of mini-implant stability using resonance frequency analysis

2012 ◽  
Vol 83 (2) ◽  
pp. 230-238 ◽  
Author(s):  
Manuel Nienkemper ◽  
Benedict Wilmes ◽  
Agamemnon Panayotidis ◽  
Alexander Pauls ◽  
Vladimir Golubovic ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Frequency Analysis ◽  
Linear Regression Analysis ◽  
Operating Mode ◽  
Mean Value ◽  
Pelvic Bone ◽  
Screw Thread ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Mini Implants

ABSTRACT Objective: To investigate whether resonance frequency analysis (RFA) is suitable to measure orthodontic mini-implant stability. Implant size significantly affects the level of resonance frequency. Regarding the operating mode of RFA, it has to be proven whether the resonance frequency of mini-implants in bone fits the range of frequency emitted by the Osstell ISQ device. Material and Methods: For this purpose the SmartPegs in the Osstell ISQ device were modified to fit with the inner screw thread of orthodontic mini-implants, and 110 mini-implants were inserted into porcine pelvic bone. RFA was performed parallel and perpendicular to the run of superficial bone fibers. A suitability test, Periotest, was also performed in the same directions. Compacta thickness was measured using cone-beam computed tomography. Correlation tests and linear regression analysis were carried out between the three methods. Results: The RFA showed a mean Implant Stability Quotient value of 36.36 ± 2.67, and the Periotest mean value was −2.10 ± 1.17. The differences between the two directions of measurement were statistically significant (P &gt; .001) for RFA and the Periotest. There was a high correlation between RFA and the Periotest (r  =  −0.90) and between RFA and compacta thickness (r  =  0.71). The comparison between the Periotest and compacta thickness showed a correlation coefficient of r  =  −0.64. Conclusion: The present results suggest that RFA is feasible as a measurement method for orthodontic mini-implant stability. As a consequence, it could be used for clinical evaluation of current stability and allow stability-related loading of mini-implants to reduce the failure rate.

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

2019 ◽  
Vol 9 (5) ◽  
pp. 860 ◽  
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.

scholarly journals Influence of Resonance Frequency Analysis (RFA) Measurements for Successful Osseointegration of Dental Implants During the Healing Period and Its Impact on Implant Assessed by Osstell Mentor Device

2019 ◽  
Vol 7 (23) ◽  
pp. 4110-4115
Author(s):  
Denis Baftijari ◽  
Alberto Benedetti ◽  
Aleksandar Stamatoski ◽  
Florent Baftijari ◽  
Zoran Susak ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Frequency Analysis ◽  
Linear Correlation ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Lower Jaw ◽  
Edentulous Mandible ◽  
Strong Linear Correlation ◽  
Level Of Significance ◽  
Secondary Stability

AIM: This study aimed to investigate and assess primary and secondary dental implant stability during the osseointegration period. METHODS: A total of 77 implants were placed in 42 patients with 26 males and 16 females. The study was conducted by comparing the resonance frequency analysis (RFA) values of the implants inserted in the lower jaw. RFA was done immediately after implant insertion and after 12 weeks. Results were statistically evaluated using SPSS Statistics for Windows, Version 7.1. Level of significance was set at P < 0.05. RESULTS: Significant differences were detected between the primary and secondary stability values, respectively. Maximum RFA value of 88 and the minimum value of 52 were observed. Stability values increased during the following three months, and all implants were successfully integrated without complication. CONCLUSION: Our results indicate and suggest that there is a strong linear correlation between implant stability and ISQ values that can be directly estimated by the RFA, especially in the posterior edentulous mandible. Osstell implant device could represent a useful tool which can be used to identify the risk for implant failure.

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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