scholarly journals Stability of dental implants with sandblasted and acid-etched (SLA) and modified (SLActive) surfaces during the osseointegration period

2021 ◽  
Vol 15 (4) ◽  
pp. 226-231
Author(s):  
Gulsum Sayin Ozel ◽  
Ozgur Inan ◽  
Asli Secilmis Acar ◽  
Gamze Alniacik Iyidogan ◽  
Dogan Dolanmaz ◽  
...  
Keyword(s):  
Dental Implants ◽  
Surface Properties ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Osteoprogenitor Cells ◽  
Implant Placement ◽  
Modified Surfaces ◽  
Surface Measurements ◽  
The Stability ◽  
Over Time

Background. The surface properties of implants are effective factors for increasing the osseointegration and activity of osteoprogenitor cells. This study compared the stability of dental implants with sandblasted and acid-etched (SLA) and modified surfaces (SLActive) using the resonance frequency analysis (RFA). Methods. In a split-mouth design, 50 dental implants with either SLA surface properties (n=25) or modified (SLActive) surface properties (n=25) were placed in the mandibles of 12 patients with a bilateral posterior edentulous area. Implant stability was measured using RFA (Osstell) at implant placement time and every week for 1, 2, and 3 months before the conventional loading time. Results. One week following the implantation, implant stability increased from 70 to 77.67 for SLA and from 71.67 to 79 for SLActive (P<0.05). Stability improved each week except in the 4th week in SLActive surface measurements. No significant differences were observed between the groups at 2 and 3 months (P>0.05). Conclusions. For both implant surfaces, increased stability was observed over time, with no significant differences between the groups.

Longitudinal Implant Stability Measurements Based on Resonance Frequency Analysis After Placement in Healed or Regenerated Bone

2014 ◽  
Vol 40 (4) ◽  
pp. 438-447 ◽  
Author(s):  
Giorgio Deli ◽  
Vincenzo Petrone ◽  
Valeria De Risi ◽  
Drazen Tadic ◽  
Gregory-George Zafiropoulos
Keyword(s):  
Resonance Frequency ◽  
Bone Quality ◽  
Frequency Analysis ◽  
Primary Stability ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Long Term Stability ◽  
The Stability ◽  
Experimental Group ◽  
Over Time

Primary stability is an indicator of subsequent osseointegration of dental implants. However, few studies have compared the implant stability among anatomical regions and bone types; thus, not enough data exist regarding the stability of implants placed in regenerated bone (RB). The present study evaluated primary and long-term stability of implants placed in RB and non-regenerated healed bone (HB). A total of 216 screw cylinder implants were placed in 216 patients (98 in HB and 118 in RB, 6 [RB6, N = 68] or 12 [RB12, N = 50] months after tooth extraction). Implant stability was evaluated using resonance frequency analysis (RFA) measured at the time of implant placement (E1), at the time of loading (4 months after placement, E2), and 4 months after loading (E3). Various clinically relevant measurements were obtained, such as implant diameter, length, and location, as well as bone quality. At E1, implant location, bone quality, and experimental group significantly affected implant stability (all at P &lt; .05). At E2, implant location, diameter, length, and experimental group significantly affected implant stability (all at P &lt; .05). At E3, bone quality, implant diameter, length, and experimental group significantly affected implant stability (all at P &lt; .01). Stability for the RB12 group was significantly higher than all other corresponding values; further, the values did not change significantly over time. For the HB and RB6 groups, stability was significantly higher at E2 than at E1 (P &lt; .001) and was no different between E2 and E3. Implant location, length, and experimental group were associated with these differences (all at P &lt; .05). Compared with HB and RB6, higher implant stability may be achieved in regenerated bone 12 months post-extraction (RB12). This stability was achieved at E1 and maintained for at least 8 months. Variables such as implant length, diameter, and bone quality affected the stability differently over time. Implant stability varied in different anatomic regions and with regard to different healing processes in the bone.

Assessment of Implant Stability of Patients With and Without Radiotherapy Using Resonance Frequency Analysis

2015 ◽  
Vol 41 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Banu Karayazgan-Saracoglu ◽  
Arzu Atay ◽  
Haluk Zulfikar ◽  
Yuksel Erpardo
Keyword(s):  
Correlation Analysis ◽  
Resonance Frequency ◽  
Dental Implants ◽  
Frequency Analysis ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
History Of ◽  
The Stability

The purpose of this study was to clinically monitor the stability of dental implants in patients with and without a history of radiotherapy, using resonance frequency analysis over 1 year. The stability of patients with 80 implants was monitored with resonance frequency analysis (Osstell Mentor) over 1 year. Data were assessed with Mann-Whitney U test and correlation analysis. Irradiated maxillary implants showed statistically lower values than the mandibular implants at a significant level (P &lt; .05).

scholarly journals Clinical Assessment of Dental Implants Placed in Low-Quality Bone Sites Prepared for the Healing Chamber with Osseodensification Concept: A Double-Blind, Randomized Clinical Trial

2021 ◽  
Vol 11 (2) ◽  
pp. 640
Author(s):  
Rafael Coutinho Mello-Machado ◽  
Carlos Fernando de Almeida Barros Mourão ◽  
Kayvon Javid ◽  
Henrique T. Ferreira ◽  
Pietro Montemezzi ◽  
...  
Keyword(s):  
Dental Implants ◽  
Insertion Torque ◽  
Implant Survival ◽  
Implant Stability ◽  
Double Blind ◽  
Implant Placement ◽  
The Stability ◽  
To Receive ◽  
Preparation Techniques ◽  
Secondary Stability

The present study aimed to compare the stability of dental implants placed in low-quality bone prepared for the healing chamber with osseodensification technique and a standard undersized drilling. Sixteen subjects presenting D3 or D4 bone density according to Misch’s classification were randomly distributed to receive dental implants following either osseodensification (G1: n = 29) or standard undersized drilling (G2: n = 26) preparation techniques. Implant insertion torque (IT) and implant stability quotient (ISQ) were measured immediately after implant placement. Implant survival and secondary stability (ISQ) were evaluated after six months. The G1 group showed higher IT (39.0 ± 6.4 Ncm) than G2 (32.0 ± 3.4 Ncm) (p < 0.001). ISQ values were similar (p > 0.05) at the implant insertion (67.1 ± 3.2 and 65.5 ± 2.7 for G1 and G2, respectively). After six months healing, implant survival was equally comparable in both groups (p > 0.05), and ISQ values were higher than those of implant insertion (p < 0.001) but similar (p > 0.05) for both groups (74.0 ± 3.6 and 73.3 ± 3.2 for G1 and G2, respectively). Within the limitations of this study, the present RCT demonstrated that a wider surgical bed prepared by osseodensification instrumentation allowed for the bone healing-chamber concept in low-quality bone without any reduction in implant stability and success rate.

scholarly journals Measurement of Primary and Secondary Stability of Dental Implants by Resonance Frequency Analysis Method in Mandible

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Mehran Shokri ◽  
Arash Daraeighadikolaei
Keyword(s):  
Resonance Frequency ◽  
Dental Implants ◽  
Frequency Analysis ◽  
Resonance Frequency Analysis ◽  
Implant Placement ◽  
Stability Measurement ◽  
The Mean ◽  
The Stability ◽  
Over 40 Years ◽  
Secondary Stability

Background.There is no doubt that the success of the dental implants depends on the stability. The aim of this work was to measure the stability of dental implants prior to loading the implants, using a resonance frequency analysis (RFA) by Osstell mentor device.Methods.Ten healthy and nonsmoker patients over 40 years of age with at least six months of complete or partial edentulous mouth received screw-type dental implants by a 1-stage procedure. RFA measurements were obtained at surgery and 1, 2, 3, 4, 5, 7, and 11 weeks after the implant surgery.Results.Among fifteen implants, the lowest mean stability measurement was for the 4th week after surgery in all bone types. At placement, the mean ISQ obtained with the magnetic device was 77.2 with 95% confidence interval(CI)  =2.49, and then it decreased until the 4th week to 72.13 (95%CI=2.88), and at the last measurement, the mean implant stability significantly (Pvalue<0.05) increased and recorded higher values to 75.6 (95%CI=1.88), at the 11th week.Conclusions.The results may be indicative of a period of time when loading might be disadvantageous prior to the 4th week following implant placement. These suggestions need to be further assessed through future studies.

Electronic Percussive Testing of the Stability of an Immediately Provisionalized Implant Placed Into a Fresh Extraction Socket: A Pilot Evaluation

2007 ◽  
Vol 33 (2) ◽  
pp. 69-74 ◽  
Author(s):  
Ira H. Orenstein ◽  
Daniel E. MacDonald ◽  
Anita C. Tao ◽  
Harold F. Morris
Keyword(s):  
Dental Implants ◽  
Evaluation Studies ◽  
Noninvasive Testing ◽  
Resonance Frequency Analysis ◽  
Bone Maturation ◽  
Extraction Socket ◽  
Bone Implant ◽  
Implant Placement ◽  
The Stability ◽  
Implant Treatment

Abstract It is important to achieve primary stabilization of dental implants that will be immediately loaded. Noninvasive devices that test the stability of immediately provisionalized implants placed into fresh extraction sockets are discussed. A titanium threaded implant was placed into a fresh extraction socket of a patient's nonrestorable mandibular right canine. The implant received an interim restoration immediately following its placement. The stability of the bone-implant complex was evaluated from the day of implant insertion through day 246 using an electronic percussive testing instrument. During the first month the bone-implant complex became progressively less stable reaching a peak measured level of instability at 30 days postimplantation. This was followed by progressive stabilization first measured on day 46 as the implant continued to osseointegrate. These findings suggest that the bone-implant complex became less stable during the first month after implant placement and was followed by a period of progressive stabilization reflecting bone maturation around the implant. A search of the literature found similar results in a study of single-stage implants (not immediately provisionalized) using resonance frequency analysis. The known sequence of wound healing around dental implants is reviewed to explain the findings of this pilot evaluation. Studies that use noninvasive testing devices to assess implant stability at placement and during healing may provide information that can help to optimize implant treatment outcomes.

Current literature review on methods for measuring the stability of osseointegrable implants.

2020 ◽  
Vol 2 (4) ◽  
pp. 64-78
Author(s):  
Noha El-Wassefy ◽  
Lars Sennerby ◽  
Dhoom SIngh Mehta ◽  
Thiago De Santana Santos
Keyword(s):  
Literature Review ◽  
Current Literature ◽  
Implant Survival ◽  
Implant Stability ◽  
Implant Placement ◽  
Factors Influencing ◽  
Case Documentation ◽  
Bone To Implant Contact ◽  
The Stability

“Osseointegration” as formulated by Alberktson is crucial for implant survival and success. Osseointegration is a measure of implant stability. Measuring implant stability helps to arrive at decisions as to loading of an implant, allows choice of protocol on a patient to patient basis and provides better case documentation. A successful implant reflects good bone to implant contact and is determined by implant stability both primary and secondary. Implant stability is achieved at two different stages – primary (immediately after implant placement) and secondary (3-4 months after implant placement). Implant stability has been confirmed to affect the process of osseointegration and therefore is essential to understand the methods to measure implant stability and factors influencing. Various methods are developed to assess implant stability which suggests the prognosis of an implant.

scholarly journals Comparative radiographic and resonance frequency analyses of the peri-implant tissue after dental implants placement using flap and flapless techniques: An experimental study on domestic pigs

2013 ◽  
Vol 70 (6) ◽  
pp. 586-594 ◽  
Author(s):  
Zoran Vlahovic ◽  
Branko Mihailovic ◽  
Zoran Lazic ◽  
Mileta Golubovic
Keyword(s):  
Bone Resorption ◽  
Resonance Frequency ◽  
Dental Implants ◽  
Dental Implant ◽  
Surgical Techniques ◽  
Primary Stability ◽  
Implant Stability ◽  
Domestic Pigs ◽  
Flap Technique ◽  
Implant Placement

Background/Aim. Flapless implant surgery has become very important issue during recent years, mostly thanks to computerization of dentistry and software planning of dental implants placements. The aim of this study was to compare flap and flapless surgical techniques for implant placement through radiographic and radiofrequency analyses. Methods. The experiment was made in five domestic pigs. Nine weeks following domestic pigs teeth extraction, implants were placed, on the right side using surgical technique flap, and flapless on the left side. Digital dental Xrays were applied to determine primary dental implant stability quality (ISQ). At certain intervals, not later than three months, the experimental animals were sacrificed, and just before it, control X-rays were applied to measure dental implants stability. Results. Radiographic analysis showed that peri-implant bone resorption in the first 4 weeks following placement implants with flap and flapless surgical techniques was negligible. After the 3 months, mean value of peri-implant bone resorption of the implants placed using flap technique was 1.86 mm, and of those placed using flapless technique was 1.13 mm. In relation to the primary dental implant stability in the first and second week there was an expected decrease in ISQ values, but it was less expressed in the dental implants placed using the flapless technique. In the third week the ISQ values were increased in the dental implants placed by using both techniques, but the increase in flapless implant placement was higher (7.4 ISQ) than in flap implant placement (1.5 ISQ). The upward trend continued in a 4- week period, and after 3 months the dental implant stability values in the implants placed using flap technique were higher than the primary stability for 7.1 ISQ, and in the implants placed using flapless technique were higher comparing to the primary stability for 10.1 ISQ units. Conclusion. Based on the results of radiographic and resonance frequency analyses it can be concluded that the flapless technique in surgical implants placemat, leads to better results.

scholarly journals Can the Macrogeometry of Dental Implants Influence Guided Bone Regeneration in Buccal Bone Defects? Histomorphometric and Biomechanical Analysis in Beagle Dogs

2019 ◽  
Vol 8 (5) ◽  
pp. 618 ◽  
Author(s):  
Manuel Fernández-Domínguez ◽  
Victor Ortega-Asensio ◽  
Elena Fuentes Numancia ◽  
Juan Aragoneses ◽  
Horia Barbu ◽  
...  
Keyword(s):  
Bone Regeneration ◽  
Dental Implants ◽  
Animal Study ◽  
Statistical Significance ◽  
Guided Bone Regeneration ◽  
Biomechanical Analysis ◽  
Implant Stability ◽  
Beagle Dogs ◽  
Implant Placement ◽  
Cervical Portion

The aim of this experimental animal study was to assess guided bone regeneration (GBR) and implant stability (ISQ) around two dental implants with different macrogeometries. Forty eight dental implants were placed within six Beagle dogs. The implants were divided into two groups (n = 24 per group): G1 group implants presented semi-conical macrogeometry, a low apical self-tapping portion, and an external hexagonal connection (whereby the cervical portion was bigger than the implant body). G2 group implants presented parallel walls macrogeometry, a strong apical self-tapping portion, and an external hexagonal connection (with the cervical portion parallel to the implant body). Buccal (mouth-related) defects of 2 mm (c2 condition) and 5 mm (c3 condition) were created. For the control condition with no defect (c1), implants were installed at crestal bone level. Eight implants in each group were installed under each condition. The implant stability quotient (ISQ) was measured immediately after implant placement, and on the day of sacrifice (3 months after the implant placement). Histological and histomorphometric procedures and analysis were performed to assess all samples, measuring crestal bone loss (CBL) and bone-to-implant contact (BIC). The data obtained were compared with statistical significance set at p < 0.05. The ISQ results showed a similar evolution between the groups at the two evaluation times, although higher values were found in the G1 group under all conditions. Within the limitations of this animal study, it may be concluded that implant macrogeometry is an important factor influencing guided bone regeneration in buccal defects. Group G1 showed better buccal bone regeneration (CBL) and BIC % at 3 months follow up, also parallel collar design can stimulate bone regeneration more than divergent collar design implants. The apical portion of the implant, with a stronger self-tapping feature, may provide better initial stability, even in the presence of a bone defect in the buccal area.

scholarly journals Using Resonance Frequency Analysis to Compare Delayed and Immediate Progressive Loading for Implants Placed in the Posterior Maxilla: A Pilot Study

2018 ◽  
Vol 12 (1) ◽  
pp. 801-810
Author(s):  
Mohammed Jasim AL Juboori ◽  
Mohammed Ahmed AL Attas ◽  
Raquel Zita Gomes ◽  
Basma Fathi Alanbari
Keyword(s):  
Pilot Study ◽  
Bone Quality ◽  
Frequency Analysis ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Implant Placement ◽  
Immediate Implant ◽  
The Mean ◽  
Implant Loading ◽  
Progressive Loading

Objective: Implants placed in the posterior region of the maxilla have a high incidence of implant failure due to poor bone quality, especially when immediate implant loading is needed. Immediate Progressive Loading (IPL) can enhance bone quality and may offer an alternative solution when Immediate Implant loading is needed. Methods: Six patients (one male and five females; 34-62 years old) were included in this study. Twelve implants were inserted in the posterior region of the maxilla. Resonance Frequency Analysis (RFA) was performed at the time of implant placement and after 1, 2, 3 and 6 months. ISQ (Implant Stability Quotient) values were compared between the Delayed Loading (DL) group after 2 months and the Progressive Loading (PL) group and between different time points for each group. Results: At implant placement, the mean ISQ values for PL and DL implants were 63 and 57, respectively. One month after implant placement, the mean ISQ value for PL implants was 73. Two months after implant placement, the mean ISQ value for PL implants was 75. Three months after implant placement, the mean ISQ values for PL and DL implants were 76 and 69, respectively. Six months after implant placement, the mean ISQ values for PL and DL implants were 79 and 76, respectively. Conclusion: Despite its limitations, this pilot study indicated that compared to DL, PL can enhance bone density and implant stability, resulting in greater early functionality and fewer surgery sessions.

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