Influence of bone density on implant stability parameters and implant success: a retrospective clinical study

Türkyilmaz, Ilser; McGlumphy, Edwin A.

doi:10.1186/1472-6831-8-32

Cited by 198 publications

(220 citation statements)

References 19 publications

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“…Many methods have been proposed to measure the primary stability, such as the Periotest, the resonant frequency and insertion torque, non-invasive tools which provide numerical values of the stability of implant through the measurement of stiffness in the bone/implant interface during or after installation 15 . The insertion torque is the angular moment of force required that the screw advances the screw thread inside the mounting hardware 16 , and provides fast and objective information about the quality of local bone 6-15 and the primary stability at surgery 6 .…”

Section: Discussionmentioning

confidence: 99%

“…Methods: Thirty-two Conexão ® implants were used: 8 conical (CC) (11.5 x 3.5 mm) and 24 cylindrical (11.5 x 3.75 mm) -8 external hexagon implants without surface treatment (MS), 8 external hexagon implants with double Porous treatment (MP), 8 internal hexagon implants with Porous treatment (CA). They were inserted in Nacional ® polyurethane in three densities (15, 20 and 40 PCF). The insertion torque (IT) (N.cm) was quantified using the digital Mackena ® torque meter, and the pullout force (PF) (N) by means of axial traction force with a 200 kg load cell, performed in a Universal Test Machine (Emic ® DL-10000) and the Tesc 3.13 software.…”

Section: Introductionmentioning

confidence: 99%

“…For its occurrence, the primary stability must be respected [1][2][3][4][5] , defined as lack of mobility in the surgical stage. Biological and mechanical factors, influenced by surgical technique, bone quality and quantity, and implant's geometry 3,6 , are the key factors that define the primary stability and then, the success of osseointegration.…”

Section: Introductionmentioning

confidence: 99%

“…To observe the influence of this factor on primary stability in in vitro analysis, composed polyurethane substrates are frequently used [3][4][5][6] , which is used as synthetic bone substitutes of the human bone and is used in studies of implants. The human bones have high variability 7 and characteristics that may influence the reliability and validity of measurements, such as fenestrations 1 , which makes necessary a very large sample to obtain a satisfactory significance in statistical comparisons.…”

Section: Introductionmentioning

confidence: 99%

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Effect of implant design and bone density in primary stability

Oliscovicz¹,

Shimano²,

Marcantonio³

et al. 2013

Braz. J. Oral Sci.

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Aim: To evaluate the influence of the format and surface treatment of implants, as well as the substrate used in primary stability. Methods: Thirty-two Conexão ® implants were used: 8 conical (CC) (11.5 x 3.5 mm) and 24 cylindrical (11.5 x 3.75 mm) -8 external hexagon implants without surface treatment (MS), 8 external hexagon implants with double Porous treatment (MP), 8 internal hexagon implants with Porous treatment (CA). They were inserted in Nacional ® polyurethane in three densities (15, 20 and 40 PCF). The insertion torque (IT) (N.cm) was quantified using the digital Mackena ® torque meter, and the pullout force (PF) (N) by means of axial traction force with a 200 kg load cell, performed in a Universal Test Machine (Emic ® DL-10000) and the Tesc 3.13 software. Data were analyzed statistically by ANOVA and Tukey's test with a significance level of 5%. Results: Difference was observed between groups (p<0.05). Regarding the IT, MP and MS inserted to the substrate 40PCF showed higher values with statistically significant difference with all interactions implants x substrate; the 15 and 20PCF densities was not significant in all groups of implants. MP, MS, CC and CA did not differ significantly, even inserted in a lower density, where CC showed better IT compared with other densities. For PF, the best performance was the interaction implant CA x 40PCF substrate, showing a difference from the other implants inserted in all substrates. Conclusions: The higher bone density and cylindrical implants with surface treatment provides greater IT and PF.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of implant design and bone density in primary stability

Oliscovicz¹,

Shimano²,

Marcantonio³

et al. 2013

Braz. J. Oral Sci.

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“…En la actualidad se ha incrementado el número de estudios en implantología [1,2,3]; uno de sus enfoques consiste en comprender el comportamiento biomecánico y resistencia mecánica de los tejidos óseos [4], teniendo en cuenta el tipo, calidad y cantidad de los mismos [5]. El tejido óseo está formado por tejido óseo cortical, y tejido óseo trabecular [6].…”

Section: Introductionunclassified

Aplicación de un método no destructivo para la obtención propiedades físicas de tejido óseo basado técnica imanenológica y herramientas software cad

López

2014

prospect

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Aplicación de un método no destructivo para la obtención propiedades físicas de tejido óseoAplicación de un método no destructivo para la obtención propiedades físicas de tejido óseo basado técnica imanenológica y herramientas software cad RESUMENLos ensayos mecánicos son usados para la caracterización de propiedades mecánicas de tejidos óseos, sin embargo, debido al carácter destructivo del ensayo, las probetas usadas son generalmente de tejidos óseos de cadáver humano o animales. La caracterización resultante de estos ensayos por lo tanto, es válida solo en los especímenes probados, porque el tejido óseo presenta alta variabilidad en sus propiedades debido al cambio de su densidad. Por este argumento y la naturaleza destructiva de los ensayos mecánicos, este tipo de ensayo no es apropiado para realizar la caracterización mecánica de tejidos vivos, lo cual limita las posibilidades de desarrollo en proyectos de investigación en vivo.El presente estudio fue desarrollado con el propósito de evaluar la viabilidad del uso de un método no destructivo, propuesto para calcular los valores de densidad aparente a partir de la densidad radiográfica. El método no destructivo tuvo su fundamento en la implementación de técnicas diagnósticas de imágenes tomográficas de hueso de mandíbula y el posterior reconocimiento de estas imágenes en un software Bio-CAD. A través del software MIMIC´S, se cuantificaron los valores de densidad a escala Hounsfield; los datos obtenidos fueron usados para deducir la curva de calibración lineal, permitiendo de esta forma, calcular el valor de densidad aparente de los especímenes. A partir de esta caracterización y la revisión de literatura, fue posible definir las propiedades mecánicas de la probeta ósea. De acuerdo con los resultados obtenidos en el presente trabajo de investigación, se estableció una alternativa para la caracterización mecánica de tejidos rígidos como el hueso. De acuerdo a la naturaleza no destructiva del método, el uso de este método podría ser extendido a experimentación con tejidos vivos, la cual estaba restringida, por las limitaciones existentes con el método destructivo basado en ensayos mecánicos.Palabras clave: Tejido Óseo, Tomografía, Escala Hounsfield y Densidad ósea. ABSTRACTMechanical tests are used for characterization of mechanical properties of bone tissue; however, due to the destructive nature of the test, the specimens are generally used human cadaver bone tissues or animals. Furthermore the resultant characterization of these tests is valid only in the specimens tested, because the bone tissue shows high variability in their properties, so, the density change. This argument and the destructive nature of the mechanical tests are reason that this type of test is not appropriated for the mechanical characterization of living tissue, which limits the possibilities of development in live research projects.

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Adenoviral delivery of adiponectin ameliorates osteogenesis around implants in ovariectomized rats

Yin

Liu

et al. 2019

The Journal of Gene Medicine

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Background: Adiponectin (APN) has been reported to promote bone formation.However, it is difficult to utilize a conventional method that administers sufficient APN to the implant site. The present study investigated the efficacy of an APN transgene to accelerate the implant osseointegration in ovariectomized (OVX) rats. Methods:In vitro, bone marrow stromal cells were transduced with reconstructed adenovirus (Ad-APN-EGFP) and osteoclast precursor RAW264.7 cells were cocultured with the conditioned medium secreted by transduced bone marrow stromal cells. Tartrate-resistant acid phosphatase staining and bone slice resorption assay were performed to evaluate the activity of osteoclastogenesis. In vivo, Ad-APN-EGFP was administered into the bone defect prior to implant placement in OVX rats.At 7 and 28 days post implantation, the femurs were harvested and prepared for a real-time reverse transcriptase-polymerase chain reaction, hemotoxylin and eosin staining, immunohistochemical staining, micro-computed tomography analysis and biomechanical testing. Results:The results showed the formation and function of osteoclasts were significantly suppressed in vitro. Successful transgene expression was confirmed, and a significant increase of OCN, Runx2 and ALP expression was detected in the Ad-APN-EGFP group in vivo. Interestingly, we also found that the overexpression of APN decreased the expression level of potent adipogenic transcription factors such as PPARγ2 and C/EBP-α. At 28 days after implantation, the Ad-APN-EGFP group revealed a significantly increased osseointegration and implant stability in OVX rats compared to the control groups (Ad-EGFP and PBS groups).Conclusions: APN via direct adenovirus-mediated gene transfer could ameliorate osseointegration surrounding titanium implants in OVX-related osteoporosis rats. Furthermore, it may be an effective strategy for promoting bone regeneration under osteoporotic conditions.

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Influence of bone density on implant stability parameters and implant success: a retrospective clinical study

Abstract: Background: The aim of the present clinical study was to determine the local bone density in dental implant recipient sites using computerized tomography (CT) and to investigate the influence of local bone density on implant stability parameters and implant success.

Cited by 198 publications

References 19 publications

Effect of implant design and bone density in primary stability

Effect of implant design and bone density in primary stability

Aplicación de un método no destructivo para la obtención propiedades físicas de tejido óseo basado técnica imanenológica y herramientas software cad

Adenoviral delivery of adiponectin ameliorates osteogenesis around implants in ovariectomized rats

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