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Title : Changes of implant stability measured at surgical stage using resonance frequency analyzer,In-Ho Cho , Yin-Zhe An, Sang-Yeon Han, Kyo-Jin Ahn, Young-Gyun Song , Joon-Seok LeeDepartment of Prosthodontics, College of Dentistry, Dankook University, Republic of Korea.Background : Implant stability is very important factor for implant success. The change of implant stability after surgery can be measured with Osstell Mentor which has high clinical reliability. ISQ can be expressed at first and second surgery using Osstell Mentor. The result can be used to evaluate the healing process of surgically operated dental implant.. Aim : The change of implant stability after surgery can be measured with Osstell Mentor which has high clinical reliability. ISQ can be expressed by Osstell Mentor. The result can be used to evaluate the healing process of surgically operated dental implant.Material and Methods: A total of fifty-five dental implants were inserted in the jaw bones of twenty-eight patients of Dankook University dental hospital using two-stage surgical procedure and implant stability was measured using resonance frequency analyzer, Osstellu2122 Mentor at first and second stage surgery. The data was collected and classified according to gender, implant length, implant diameter, and implanted site, maxilla and mandible. Mann-Whitney test, Wilcoxon-sighed rank test, Wilcoxon rank sum test, Kruskal-Wallis test and Nemenyi test were used to analyze the collected data. Statistical analyses were made between gender, implant length, implant diameter, and implanted siteResults : The primary implant stability was compared with secondary implant stability at first and second stage surgery using resonance frequency analyzer, Osstell Mentor, with which ISQ was recorded. Statistically significant difference was observed between primary and secondary implant stability(P
BACKGROUND: Resonance frequency analysis (RFA) is a simple, practical, reproducible, clinically feasible and non-invasive method that allows to safely assess the degree of stiffness that the implant is within the bone structure. AIM: According to the applied methodology, the aim of this clinical study was to perform a research to evaluate the stability of two different types of implants, with resonance frequency analysis (RFA). METHODS AND MATERIALS: This clinical research was approved by the ethical committee (Plataforma Brasil) under the number CAEE 54726816.6.0000.5374. Patients were submitted to conventional dental implant surgery with installation of two implants, Straumannu2019s, Bone Level Tapered (BLT) 4x8mm and SINu2019s Unitite 4x8,5mm. Each patient received two implants, one from each brand, with their respective healing abutments. The stability of the implants (ISQ) was measured by the Osstell apparatus. A torque of 10Ncm was applied to the smartpegs. The stability of the implants was measured at the time of surgery, four, six and eight weeks post-surgery. At each stage, three measurements were taken and a mean (mean ISQ) was obtained for each implant. RESULTS: Each group (SINu00ae and Straumannu00ae) was treated, separately, with ANOVA and the differences found identified by Tukey-Kramer multiple comparisons test. The Straumann implants show no statically difference in the ISQ values for all measurements. The SIN group showed only a statistically lower ISQ value in the 4 week. The two groups were compared in all stages with a paired t-test. The ISQ values u200bu200bfor the Straumann groups were statistically higher in all stages (P
Implant stability is an important factor guiding the selection of placement and loading protocols. An evaluation of the currently available techniques for measuring stability clearly demonstrates a need for a non-invasive, quantitative, repeatable, and reliable way to measure implant stability over time. A potential candidate for this purpose is resonance frequency analysis (RFA). A retrospective study was performed on implant patient data collected over a five-year period. Patients were categorized according to their placement protocol (one-stage vs. two-stage) and loading protocol (early vs. traditional). RFA measurements were recorded during placement and prior to loading. Survival or failure was determined after a minimum follow-up period of two years. Receiver operating characteristic (ROC) statistical analysis was used to determine ISQ cut-off points with respective sensitivity and specificity values for different placement and loading protocols. In predicting implant failure, sensitivity progressively increased and specificity decreased as ISQ cut-off values increased. All failures occurred at ISQ
The establishment of osseointegration following dental implant placement is a major contributing factor to the clinical success and long-term function of implant-retained prosthesis, Radiographic examination and palpation have been two of the methods often used in clinical assessment for implant stability for years However, theses radiographs are two-dimensional and difficult to standardize, The investigation was designed to study the use of resonance frequency analysis in search of the stability of the implant-issue interface in vitro, Resonance frequency was measured when test implants were embedded in bakelites, The change in stiffness observed during bone healing was modeled by embedding implants in gypsum during setting period, Our results showed that there was an increase in resonance frequency related to stiffness increment during osseointegration,
Background Implant success depends both on the tissue biological response and also on several factors such as implant morphology, bone quality and surgical technique.Aim/HypothesisThe aim of this study was to measure primary and secondary implant stability through the resonance frequency analysis of mandibular implants and to evaluate the influence of implant diameter and length, sex, age and site.Material and MethodsThirty-six healthy patients were enrolled for the study. A total of 82 OsseoSpeed TX (Astra Tech Implant System u2013 Dentsply Implants; Mu00f6lndal, Sweden) implants were placed in mandible, with different lengths (9, 11 and 13 mm) and diameters (3,5 and 4 mm). All implants were placed according to a conventional two-stage surgical procedure. Implant stability quotients (ISQ) were recorded at implant placement (ISQ1) and 3 months later, at second surgical stage (ISQ2). Statistical analysis was performed to investigate significant differences between implant dimensions, patient sex and age, and implant position (anterior or posterior sites)(significance =0.05). ResultsSecondary implant stability was statistically significantly higher compared to initial ISQ values (p
Implant dentistry has changed and enhanced significantly since the introduction of osseointegration concept with dental implants. Because the benefits of therapy became apparent, implant treatment earned a widespread acceptance. Therefore, the need for dental implants has caused a rapid expansion of the market worldwide. Dental implantology continues to excel with the developments of new surgical and prosthodontic techniques, and armamentarium. The purpose of this book named Current Concepts in Dental Implantology is to present a novel resource for dentists who want to replace missing teeth with dental implants. It is a carefully organized book, which blends basic science, clinical experience, and current and future concepts. This book includes ten chapters and our aim is to provide a valuable source for dental students, post-graduate residents and clinicians who want to know more about dental implants.
Assessment of implant stability by resonance frequency analysis in anterior and posterior segments of mandibulary edentuolus ridgesOne of the most important inventions in modern dentistry are dental implants. The process of osteointegration is a result of the initial mechanical stability complemented with biological stability. Osstell device was invented to measure the stability of dental implants at any time of the treatment.Aim/Hypothesis: The aim of this study was to analyze the implant stability quotient (ISQ) results of the resonance frequency (RF) in anterior and posterior segments of the lower jaw at the first day of placement of dental implants and 3 months after the surgery.Materials and Methods: This study was approved by forty patients with total or partial edentulous mandibular jaws underwent with 76 dental implants. The ISQ values were measured at the day of surgery and 3 months after placement. Osttell Mentor device was used to measure the RF value of the implant fixture through the transducer or pin. Measurements were taken four times in each direction of inserted oral dental implant.Results: The ISQ primary stability at the day of surgery had a mean value of 63.81 (SD 9.48) for dental implants in anterior segment of lower jaw and the secondary stability was 70.25. The mean ISQ of primary stability of the posterior segments of lower jaw was 63.89 (SD 6,99) while the secondary stability 69.43. Differences between primary and secondary mean ISQ values were statistically significant (p