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Implant stability quotient

Mahalakshmi Gujjalapudi, Chandrasekar Anam, Praveen Mamidi, Radha Chiluka, A Gautam Kumar, Ragini Bibinagar
INTRODUCTION: After implant placement, a stress-free healing period of 3-6 months is a pre-requisite to achieve good osseointegration. If this duration could be reduced, the patients would feel happier. Eventhough, immediate loading of implants is a clinically feasible concept; it is not possible in certain situations. Few studies have shown that Static magnetic field is useful to promote bone formation faster after the bone is wounded. AIM: This pilot study was intended to evaluate the tissue response after implant placement under the influence of magnetic field...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
Luciano Malchiodi, Lucio Balzani, Alessandro Cucchi, Paolo Ghensi, Pier Francesco Nocini
PURPOSE: This randomized clinical trial aimed to investigate the relationships between insertion torque, implant stability quotient (ISQ), and crestal bone loss (CBL) of implants placed in fresh or 12-week healed extraction sites. MATERIALS AND METHODS: Forty patients were randomly assigned to one of two groups and had one implant placed immediately (test group, n = 20) or 12 weeks after extraction (control group, n = 20) at premolar or molar sites. For all implants, insertion torque and ISQ scores at insertion and loading were recorded...
November 2016: International Journal of Oral & Maxillofacial Implants
David Cochran, Andreas Stavropoulos, Marcel Obrecht, Benjamin Pippenger, Michel Dard
PURPOSE: Tapered implants are thought to result in equivalent long-term stability and marginal peri-implant bone height in comparison to cylindrical implants. The goal of this study was to compare the primary stability and osseointegration of a novel bone-level tapered-wall implant to a control bone-level cylindrical implant with exactly the same surface characteristics, in a direct side-by-side comparison in an animal model. MATERIALS AND METHODS: Mandibular premolars and first molars were extracted in 11 G...
November 2016: International Journal of Oral & Maxillofacial Implants
Mohit G Kheur, Raman Sandhu, Supriya Kheur, Bach Le, Tabrez Lakha
PURPOSE: To assess validity and reliability of resonance frequency analysis (RFA) as an indicator of implant micromotion (MM) in implants of different lengths and thread designs. MATERIALS AND METHODS: Two types of implants were studied-An implant with an asymmetrical, self-tapping thread design, varying thread pitch and geometry (Myriad Plus; Equinox Medical Technology, Amersfoort, The Netherlands) and a tapered implant with a proprietary buttress thread design (Tapered Internal; BioHorizon)...
December 2016: Implant Dentistry
Tolga F Tözüm, Erhan Dursun, Serdar Uysal
BACKGROUND: The aim of the present study was to investigate whether the mandibular cortical index (MCI) has a relationship with fractal dimension of bone and/or implant stability, and to justify the possible association between MCI, fractal dimension, and stability. MATERIALS AND METHODS: Eighty-two subjects who received dental implants to replace missing mandibular premolar/molar sites were selected. Three months after surgical placement, implants were restored with fixed ceramic fused metal crowns...
December 2016: Implant Dentistry
Hyun-Suk Kim, Pil-Young Yun, Young-Kyun Kim
PURPOSE: The aim of this study was to compare and analyze the peri-implant tissue conditions and prospective clinical outcomes associated with 2 types of hydroxyapatite (HA)-coated implants: (1) fully HA-coated implants and (2) partially HA-coated implants with resorbable blast medium on the coronal portion of the threads. METHODS: Forty-four partially edentulous patients were randomly assigned to undergo the placement of 62 HA-coated implants, and were classified as the control group (partially HA-coated, n=30) and the test group (fully HA-coated, n=32)...
October 2016: Journal of Periodontal & Implant Science
Hairong Huang, Daniel Wismeijer, Xianhong Shao, Gang Wu
OBJECTIVES: The objective of this study is to mathematically evaluate the influence of multiple factors on implant stability quotient values in clinical practice. PATIENTS AND METHODS: Resonance frequency analysis was performed at T1 (measured immediately at the time of implant placement) and at T2 (measured before dental restoration) in 177 patients (329 implants). Using a multivariate linear regression model, we analyzed the influence of the following eleven candidate factors: sex, age, maxillary/mandibular location, bone type, immediate/delayed implantation, bone grafting (presence or absence), insertion torque, I-/II-stage healing pattern, implant diameter, implant length, and T1-T2 time interval...
2016: Therapeutics and Clinical Risk Management
Stephan Christian Möhlhenrich, Kristian Kniha, Dirk Elvers, Nassim Ayoub, Evgeny Goloborodko, Frank Hölzle, Ali Modabber
The aim of this study was to investigate the influence of two different microvascular reanastomized bone transplants on primary (PS) and secondary stability (SS) of dental implants. Totally 96 implants (Bone Level, Institut Straumann AG, Basel, Switzerland) were inserted in fibula (n = 50) and iliac crest (n = 46) in mean of 97.7 SD 75.6 weeks after performing reconstructive surgery. For measuring PS and SS the resonance frequency (RFA) analysis was used in mesiodistal and vestibulo-oral direction to quantify the implant stability quotient (ISQ)...
September 28, 2016: Journal of Cranio-maxillo-facial Surgery
Agda Marobo Andreotti, Marcelo Coelho Goiato, Adhara Smith Nobrega, Emily Vivianne Freitas da Silva, Humberto Gennari Filho, Eduardo Piza Pellizzer, Daniela Micheline Dos Santos
The aim of this systematic review was to evaluate the relationship between two methods used to assess implant stability, investigating whether both provide similar implant stability assessments for the same clinical case. A literature search was conducted on MEDLINE-PubMed and Scopus databases, without limitation publication period, up to November 2015. The following key words were used, with associations among them: "dental implant", "dental implants", "Osstell", "resonance frequency analysis", "implant stability quotient", "ISQ", "Periostest", "Periotest value" and "PTV"...
October 21, 2016: Journal of Periodontology
Masahiro Wada, Yasutane Tsuiki, Tohru Suganami, Kazunori Ikebe, Motofumi Sogo, Ikuhisa Okuno, Yoshinobu Maeda
BACKGROUND: The aim of this study is to investigate the correlation between the thickness of the cortical bone or the voxel values that are obtained by cone beam CT (CBCT) and the insertion torque values (ITVs) or the implant stability quotient (ISQ) values. METHODS: A pig's ilium was used as the implant placement site. The implants used in this study were two kinds of diameters (3.8 mm, 5.0 mm) and two kinds of lengths (7.0 mm, 12.0 mm) having a general threadlike shape with a mechanically polished surface...
December 2015: International Journal of Implant Dentistry
Salah Huwais, Eric G Meyer
PURPOSE: It is essential to have sufficient bone bulk and density at the implant site in order to achieve good bone-to-implant contact and primary stability, which are crucial for osseointegration. A new osteotomy preparation technique was recently introduced that uses a bone preservation method that creates a layer of compacted bone along the surface of the osteotomy. The hypothesis of this study was that this novel technique would increase primary implant stability, bone mineral density, and the percentage of bone at the implant surface compared with drilling technique...
October 14, 2016: International Journal of Oral & Maxillofacial Implants
Barry P Levin
Different parameters can be measured during dental implant insertion to determine the primary stability of the implant. The purpose of this retrospective study was to investigate whether a correlation exists between immediate implant insertion torque value (ITV) and implant stability quotient (ISQ) in nonmolar sites. A total of 59 implants in 52 patients were placed into extraction sockets. ITV was recorded at surgery, and ISQ was recorded at surgery and at follow up. Implants with higher ITV and/or ISQ were evaluated at 6 to 8 weeks...
November 2016: International Journal of Periodontics & Restorative Dentistry
Marco Tallarico, Erta Xhanari, Milena Pisano, Giacomo De Riu, Antonio Tullio, Silvio Mario Meloni
PURPOSE: To test the hypothesis that there is no difference in clinical, radiographic and aesthetic outcomes positioning single post-extractive ultra-wide 7 mm-diameter implants or waiting 4 months to place implant, after molar extraction and the socket preservation procedure. MATERIAL AND METHODS: Patients requiring one implant-supported single restoration to replace a failed tooth in the molar region of both maxilla and mandible were selected. Patients were randomised according to a parallel group design into two arms: implant installation in fresh extraction sockets augmented with corticocancellous heterologous bone and porcine derma (group A) or delayed implant installation 4 months after tooth extraction and socket preservation using the same materials (group B)...
2016: European Journal of Oral Implantology
Jeffrey J McCullough, Perry R Klokkevold
INTRODUCTION: Available literature suggests there is a transient drop in implant stability from approximately week 0 to week 3-4 as a result of peri-implant bone remodeling as it transitions from a primary, mechanical stability to a secondary, biological stability. Research investigating the influence of macro-thread design on this process is scant. AIM: The specific aim of this study was to evaluate the role of macro-thread design on implant stability in the early post-operative healing period using resonance frequency analysis (RFA)...
October 3, 2016: Clinical Oral Implants Research
Lucas J Poort, Charlotte C Kiewiet, Jack P M Cleutjens, Ruud Houben, Frank J P Hoebers, Peter A W H Kessler
OBJECTIVES: The aim of this study was to compare the influence of implant surface treatment and irradiation dose on implant stability and osseointegration of 144 extraoral implants in irradiated frontal bone of minipigs. MATERIAL AND METHODS: 144 implants with 3 different surface treatments (machined, etched and HAVD-coated) were implanted in the frontal bone of 16 Göttingen minipigs. Three groups of four pigs received radiation with equivalent doses of 25, 50 and 70 Gy, and one group served as control...
November 2016: Journal of Cranio-maxillo-facial Surgery
Damir Jelusic, Matthias L Zirk, Tim Fienitz, Darije Plancak, Ivan Puhar, Daniel Rothamel
OBJECTIVES: To compare a monophasic (100% ß-TCP) and a biphasic (60% HA and 40% ß-TCP) bone substitute material (BSM) regarding biocompatibility, osteoconductivity and implant stability using histological, radiological and resonance frequency analysis. MATERIAL AND METHODS: Sixty-seven sinus floor elevations were performed in 60 patients. One patient group (monophasic bone substitute [MBS], 30 patients, 32 sinuses) was augmented by the use of the monophasic material (Bioresorb(®) , Sybron Implant Solutions, Bremen, Germany), while the second group (biphasic bone substitute (BBS), 30 patients, 35 sinuses) received a biphasic material (Maxresorb(®) , Botiss Biomaterials, Berlin, Germany)...
September 29, 2016: Clinical Oral Implants Research
Hsiang-Hsi Hong, Adrienne Hong, Lan-Yan Yang, Wei-Yang Chang, Yi-Fang Huang, Yen-Ting Lin
BACKGROUND: Clinical conclusions in studying the stability and osseointegration of mandibular implants positioned using the bone expansion techniques are conflicting and limited. PURPOSE: The objective was to examine the implant stability quotient (ISQ) values of mandibular posterior dental implants with 4.1 mm diameter that inserted with osteotome bone expansion technique versus conventional drilling technique during a 12-week observation period. MATERIALS AND METHODS: Twenty-four implants with 4...
September 25, 2016: Clinical Implant Dentistry and related Research
Sergio A Gehrke, María P Ramírez-Fernandez, José Manuel Granero Marín, Marcos Barbosa Salles, Massimo Del Fabbro, José Luis Calvo Guirado
OBJECTIVE: The aim of this study was to compare, through biomechanical and histological analysis, the aluminium (AlO2) and titanium dioxide (TiO2) microparticles for blasting during the sandblasting acid surface treatment in titanium dental implants using a rabbit tibia model. MATERIALS AND METHODS: Forty-eight commercially available titanium dental implants were divided into two test groups (n = 24 per group): implants with surface treated by AlO2 followed by acid etching as control group (Con group) and implants with surface treated by TiO2 followed by acid etching as test group (Test group)...
September 24, 2016: Clinical Oral Implants Research
Daniele De Santis, Alessandro Cucchi, Giovanni Rigoni, Carlo Longhi, Pier Francesco Nocini
PURPOSE: Concerns have been expressed about the possibility of high insertion torque (IT) causing necrosis, impaired osseointegration, and crestal bone loss over time. The present study investigated the relationship between primary stability and implant success, including early and late maintenance of crestal bone levels. MATERIALS AND METHODS: Implants were placed in patients at three study centers. Every effort was made to achieve the highest possible primary stability, which was measured with IT and implant stability quotient (ISQ)...
September 2016: International Journal of Oral & Maxillofacial Implants
Taek-Ka Kwon, Hae-Young Kim, Jae-Ho Yang, Ulf Me Wikesjö, Jaebum Lee, Ki-Tae Koo, In-Sung Yeo
PURPOSE: Various advanced technologies have been designed to estimate dental implant stability, including insertion torque, implant damping using the Periotest, and resonance frequency analysis expressed in implant stability quotient units. This study aimed to establish the relationship between the estimates for these three techniques. MATERIALS AND METHODS: Bovine cortical bone blocks were trimmed to square shapes of precisely controlled thickness and density. Thereafter, 4-mm-diameter × 10-mm-long implants were placed in the bone blocks using 30-, 45-, and 60-Ncm insertion torques...
September 2016: International Journal of Oral & Maxillofacial Implants
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