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 < .05). In T1, 9 mm implants had a higher ISQ than 11 mm ones (P < .05), whereas in T2, the implants of 11 mm showed a higher ISQ than did the 9 mm implants (P < .05). There was no difference in insertion torque between 9 and 11 mm implants (P > .05), nor was there a correlation between ISQ and insertion torque (P > .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 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.

scholarly journals Evaluation of Insertion Energy as Novel Parameter for Dental Implant Stability

2020 ◽  
Vol 9 (9) ◽  
pp. 2977
Author(s):  
Tanja Grobecker-Karl ◽  
Anthony Dickinson ◽  
Siegfried Heckmann ◽  
Matthias Karl ◽  
Constanze Steiner
Keyword(s):  
Resonance Frequency ◽  
Frequency Analysis ◽  
Primary Stability ◽  
Insertion Torque ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Time Curve ◽  
Trapezoidal Formula ◽  
Primary Implant ◽  
Reliable Parameter

Insertion energy has been advocated as a novel measure for primary implant stability, but the effect of implant length, diameter, or surgical protocol remains unclear. Twenty implants from one specific bone level implant system were placed in layered polyurethane foam measuring maximum insertion torque, torque–time curves, and primary stability using resonance frequency analysis (RFA). Insertion energy was calculated as area under torque–time curve applying the trapezoidal formula. Statistical analysis was based on analysis of variance, Tukey honest differences tests and Pearson’s product moment correlation tests (α = 0.05). Implant stability (p = 0.01) and insertion energy (p < 0.01) differed significantly among groups, while maximum insertion torque did not (p = 0.17). Short implants showed a significant decrease in implant stability (p = 0.01), while reducing implant diameter did not cause any significant effect. Applying the drilling protocol for dense bone resulted in significantly increased insertion energy (p = 0.02) but a significant decrease in implant stability (p = 0.04). Insertion energy was not found to be a more reliable parameter for evaluating primary implant stability when compared to maximum insertion torque and resonance frequency analysis.

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 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.

Validation of Resonance Frequency Analysis by Comparing Implant Stability Quotient Values With Histomorphometric Data

2011 ◽  
Vol 37 (3) ◽  
pp. 301-308 ◽  
Author(s):  
Ashish Thomas Kunnekel ◽  
K. Chandrasekharan Nair ◽  
E. Munirathnam Naidu ◽  
Gomathinayagam Sivagami
Keyword(s):  
Resonance Frequency ◽  
Frequency Analysis ◽  
Primary Stability ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Implant Stability Quotient ◽  
The Relationship

Abstract The study was designed to determine the relationship between implant stability quotient (ISQ) values measured using resonance frequency analysis (RFA) and implant-bone distance measured histomorphometrically. Ten identical implants were equally divided into 2 groups based on primary stability at placement. Osteotomies were prepared in harvested goat femurs. ISQ values were measured and compared with implant-bone distance determined by micrometry. Based on the results, it was concluded that RFA can be used to measure implant stability reliably.

scholarly journals Comparison of Implant Stability between Regenerated and Non-Regenerated Bone. A Prospective Cohort Study

2021 ◽  
Vol 10 (15) ◽  
pp. 3220
Author(s):  
Marta Vallecillo-Rivas ◽  
Candela Reyes-Botella ◽  
Cristina Vallecillo ◽  
María Jesús Lisbona-González Manuel Vallecillo-Capilla ◽  
María Victoria Olmedo-Gaya
Keyword(s):  
Cohort Study ◽  
Bone Quality ◽  
Frequency Analysis ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Native Bone ◽  
Time Points ◽  
Implant Stability Quotient ◽  
Implant Placement ◽  
Secondary Stability

Implant stability is one of the main indicators of successful osseointegration. Although it has been measured in numerous studies, there has been little research on implant stability in regenerated bone. The study compares primary and secondary stability between implants placed in regenerated versus native bone and evaluates the influence of bone quality on the results. Sixty implants were placed in 31 patients: 30 implants inserted in native bone (non-regenerated) after a healing period of at least 6 months post-exodontia and 30 inserted in regenerated bone at 6 months after grafting with xenograft. Resonance frequency analysis (RFA) was used to obtain implant stability quotient (ISQ) values at baseline (implant placement), 8 weeks, and 12 weeks. Statistically significant differences were found between implants placed in regenerated bone and those placed in native bone at all measurement time points (p < 0.05). ISQ values were significantly influenced by bone quality at baseline (p < 0.05) but not at 8 or 12 weeks. Greater stability was obtained in implants placed in native bone; however, those placed in regenerated bone showed adequate primary and secondary stability for prosthetic loading. Bone quality influences the primary but not secondary stability of the implants in both native and regenerated bone.

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