scholarly journals Analysis of marginal bone loss and implant stability quotient by resonance frequency analysis in different osteointegrated implant systems. Randomized prospective clinical trial

2019 ◽  
pp. 0-0 ◽  
Author(s):  
RM Diaz-Sanchez ◽  
JM Delgado-Munoz ◽  
MA Serrera-Figallo ◽  
MI Gonzalez-Martin ◽  
D Torres-Lagares ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Bone Loss ◽  
Resonance Frequency ◽  
Frequency Analysis ◽  
Prospective Clinical Trial ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Marginal Bone Loss ◽  
Implant Stability Quotient

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 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 Stability Testing of a Wide Bone-Anchored Device after Surgery without Skin Thinning

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Malou Hultcrantz
Keyword(s):  
Surgical Technique ◽  
Resonance Frequency ◽  
Frequency Analysis ◽  
Safe Procedure ◽  
Stability Testing ◽  
Single Center ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Implant Stability Quotient

Objective. To longitudinally follow the osseointegration using Resonance Frequency Analysis (RFA) for different lengths of abutment on a new wide bone-anchored implant, introduced with the non-skin thinning surgical technique.Study Design. A single-center, prospective 1 year study following adults with bone-anchored hearing implants.Materials and Methods. Implantation was performed and followed for a minimum of 1 year. All patients were operated on according to the tissue preserving technique. A 4.5 mm wide fixture (Oticon Medical) with varying abutments (9 to 12 mm) was used and RFA was tested 1 week, 7 weeks, 6 months, and 12 months later. Implant Stability Quotient (ISQ), was measured from 1 to 100. Stability was compared to a group of patients(N=7)implanted with another brand (Cochlear BI400) of 4.5 mm fixtures.Results. All 10 adults concluded the study. None of the participants lost their implant during the test period indicating a good anchoring of abutments to the wide fixture tested. Stability testing was shown to vary depending on abutment length and time after surgery and with higher values for shorter abutments and increasing values over the first period of time. One patient changed the abutment from 12 to 9 mm and another from a 9 to a 12 during the year. No severe skin problems, numbness around the implant, or cosmetic problems arose.Conclusion. After 1 year of follow-up, combination of a wide fixture implant and the non-skin thinning surgical technique indicates a safe procedure with good stability and no abutment losses.

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 Effects of photofunctionalization on early osseointegration of titanium dental implants in the maxillary posterior region: a randomized double-blinded clinical trial

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Bada Choi ◽  
Ye Chan Lee ◽  
Kyung Chul Oh ◽  
Jae Hoon Lee
Keyword(s):  
Clinical Trial ◽  
Resonance Frequency ◽  
Bone Quality ◽  
Frequency Analysis ◽  
Treated Group ◽  
Posterior Region ◽  
Resonance Frequency Analysis ◽  
Group Iii ◽  
The Stability ◽  
Double Blinded

Abstract Background This study aimed to investigate the effects of ultraviolet (UV) photofunctionalization on the stability of implants during the early phase in the posterior region of the maxilla. The study was a randomized double-blinded clinical trial. Half of the participants received conventional commercial implants while the other half received UV-irradiated implants. The surgical sites were classified into three bone quality groups (II, III, IV) based on the grayscale value measured on cone-beam computed tomography. The values obtained from resonance frequency analysis were recorded immediately after implant placement and at 4 weeks and at 4 months postoperatively. The marginal bone level of the implants was evaluated using periapical radiographs at 4 weeks, 4 months, and 1 year postoperatively. Results Fifty-seven implants placed in 34 participants were analyzed in this study. In group III, significant differences were observed in terms of the differences of resonance frequency analysis values at 4 weeks (p = 0.004) and 4 months (p = 0.017) postoperatively. In group II, the UV-treated group showed significantly lesser bone loss at 4 weeks post-operatively (p = 0.037). Conclusions Within the limitation of the present study, we concluded that UV surface treatment on implants may increase the initial stability in the region of the maxilla with poor bone quality.

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