Evaluation of relationship between preoperative bone density values derived from cone beam computed tomography and implant stability parameters: a clinical study

Salimov, Fariz; Tatlı, Ufuk; Kürkçü, Mehmet; Akoğlan, Mücahide; Öztunç, Haluk; Kurtoğlu, Cem

doi:10.1111/clr.12219

Cited by 66 publications

(72 citation statements)

References 15 publications

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“…Previous studies also found significant correlations between Hounsfield unit (HU) values derived from helical CT and implant stability parameters 5,6,23 as well as between density values derived from CBCT and implant stability parameters. 10,11,13 The aforementioned previous studies evaluated the correlations among the techniques giving predictable information about implant stability before implant surgery (ie, density value derived from CT or CBCT) and during implant surgery (ie, subjective bone quality classification, ITV, and RFA). However; relationship and consistency between stability changes of immediately loaded implants and CBCT-derived preoperative bone density assessments have not been evaluated in the literature, yet.…”

Section: Discussionmentioning

confidence: 99%

“…Details of radiological evaluation have been previously described. 13 Cone-beam CT scanning of the maxilla or mandible was performed after positioning either a previously fabricated surgical acrylic template including 1-mm-diameter indicator metal rods located in the center of each missing tooth or the existing removable complete dentures attached to the same indicator rods under the following conditions: 120 kV, 5 mA, a voxel size of 0.2 mm, scan volume 8.5 cm in diameter, and 8.5 cm in height. The proper implant for each previously designated implant area was selected using cross-sectional images.…”

Section: Cbct Evaluationmentioning

confidence: 99%

“…The thickness of cortical bone set was assigned according to the previous studies. 13,15,16 Cortical bone thickness of 1 mm or greater was assumed as thick, whereas less than 1 mm was assumed as thin. Second, once entered into trabecular bone, the surgeon focused on the compactness of the trabecular bone whether it is dense or fine.…”

Section: Evaluation Of Bone Qualitymentioning

confidence: 99%

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Does Cone Beam Computed Tomography–Derived Bone Density Give Predictable Data About Stability Changes of Immediately Loaded Implants?

Tatlı

Salimov²,

Kürkçü³

et al. 2014

Journal of Craniofacial Surgery

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The aim of this clinical study was to evaluate whether preoperative bone density value derived from cone-beam computed tomography (CBCT) gives predictable data about primary and secondary stability characteristics of immediately loaded dental implants under different clinical variables. A total of 77 immediately loaded implants placed in 23 patients were included the study. Bone density values of the implant recipient sites were recorded using CBCT. The maximum insertion torque values (ITVs) of the implants were recorded using a digital torque meter during surgery. Resonance frequency measurements were taken using the Osstell Mentor at 4 time points; immediately after surgery (implant stability quotient [ISQ]0) and after 1 (ISQ1), 3 months (ISQ3), and 12 months (ISQ12) of loading. Data were analyzed statistically. The mean bone density and ITVs of all implants were 565 ± 81 and 36.8 ± 3.8 N · cm, respectively. The mean ISQ values were 73.6 ± 5.8 at baseline, 71.1 ± 6.5 after 1 month, 74.8 ± 5.6 after 3 months, and 76.6 ± 5.1 after 12 months of loading. Statistically significant differences were observed between ISQ0 and ISQ1 (P < 0.001), and ISQ0 and ISQ12 (P < 0.001), but not between ISQ0 and ISQ3 (P > 0.05). In regard to stability changes over time, statistically significant correlations were found between bone density values from CBCT and ISQ follow-up measurements, and between ITV and ISQ follow-up measurements in all examination periods. Thus, it is possible to predict primary and secondary stability characteristics of immediately loaded implants by using preoperative CBCT scan and perioperative ITV.

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Section: Discussionmentioning

confidence: 99%

Section: Cbct Evaluationmentioning

confidence: 99%

Section: Evaluation Of Bone Qualitymentioning

confidence: 99%

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Does Cone Beam Computed Tomography–Derived Bone Density Give Predictable Data About Stability Changes of Immediately Loaded Implants?

Tatlı

Salimov²,

Kürkçü³

et al. 2014

Journal of Craniofacial Surgery

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“…Thus, CBCT has been proposed as a diagnostic method for the determination of bone mineral density [10,11,18,[34][35][36] . Gray values obtained with CBCT are used in an analog way as the HU values for the determination of mineral density [16] and show a linear relationship with the attenuation coefficients of the materials [13,15] , HU values obtained with medical CT [11,12,37,38] , and density values from DEXA [14] .…”

Section: Cone Beam Ctmentioning

confidence: 99%

Bone mineral density in cone beam computed tomography: Only a few shades of gray

Campos

Souza

Júnior

et al. 2014

WJR

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Cone beam computed tomography (CBCT) has often been used to determine the quality of craniofacial bone structures through the determination of mineral density, which is based on gray scales of the images obtained. However, there is no consensus regarding the accuracy of the determination of the gray scales in these exams. This study aims to provide a literature review concerning the reliability of CBCT to determine bone mineral density. The gray values obtained with CBCT show a linear relationship with the attenuation coefficients of the materials, Hounsfield Units values obtained with medical computed tomography, and density values from dual energy X-ray absorciometry. However, errors are expected when CBCT images are used to define the quality of the scanned structures because these images show inconsistencies and arbitrariness in the gray values, particularly when related to abrupt change in the density of the object, X-ray beam hardening effect, scattered radiation, projection data discontinuity-related effect, differences between CBCT devices, changes in the volume of the field of view (FOV), and changes in the relationships of size and position between the FOV and the object evaluated. A few methods of mathematical correction of the gray scales in CBCT have been proposed; however, they do not generate consistent values that are independent of the devices and their configurations or of the scanned objects. Thus, CBCT should not be considered the examination of choice for the determination of bone and soft tissue mineral density at the current stage, particularly when values obtained are to be compared to predetermined standard values. Comparisons between symmetrically positioned structures inside the FOV and in relation to the exomass of the object, as it occurs with the right and left sides of the skull, seem to be viable because the effects on the gray scale in the regions of interest are the same.

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“…Comparable differences have been reported elsewhere The strong correlation between bone density and regions within the mouth was similar to previous studies (Norton and Gamble, 2001;Turkyılmaz et al, 2007). Salimov et al (2013), evaluated the relationship between preoperative bone density values derived from cone beam CT and implant stability of 65 implants in 17 patients. They found significant correlations among density value derived from cone beam CT, insertion torque, and ISQ values in all clinical variables and reported that cone beam CT was an efficient method for bone density assessment.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the correlation between bone density and implant stability

Sümer

Danacı²,

Telcioglu³

et al. 2013

jecm

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Evaluation of relationship between preoperative bone density values derived from cone beam computed tomography and implant stability parameters: a clinical study

Cited by 66 publications

References 15 publications

Does Cone Beam Computed Tomography–Derived Bone Density Give Predictable Data About Stability Changes of Immediately Loaded Implants?

Does Cone Beam Computed Tomography–Derived Bone Density Give Predictable Data About Stability Changes of Immediately Loaded Implants?

Bone mineral density in cone beam computed tomography: Only a few shades of gray

Assessment of the correlation between bone density and implant stability

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