Fractals in dentistry

Sánchez, Iván Nieto; Uzcátegui, Gladys

doi:10.1016/j.jdent.2011.01.010

Cited by 95 publications

(69 citation statements)

References 161 publications

(168 reference statements)

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“…We obtained 98% accuracy in calculating the volume through the program. Fractal analysis is a quantitative tool to study the morphology of the intricate structure and has been shown to have application in dentistry [19]. Researchers had found a strong correlation between the fractal dimension and bone mineral density [30, 31].…”

Section: Methodsmentioning

confidence: 99%

“…Imaging based parameters such as bone volume [17], bone volume fraction [18], fractal dimension [19] and trabecular thickness [18] are usually used to analyze bone regeneration and correlate structure with pathology. Such parameters are common with other imaging modalities such as MRI and Ultrasound [20, 21], and have been investigated to understand how they relate with bone regeneration process.…”

Section: Introductionmentioning

confidence: 99%

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Micro-computed tomography (CT) based assessment of dental regenerative therapy in the canine mandible model

et al. 2015

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High-resolution 3D bone-tissue structure measurements may provide information critical to the understanding of the bone regeneration processes and to the bone strength assessment. Tissue engineering studies rely on such nondestructive measurements to monitor bone graft regeneration area. In this study, we measured bone yield, fractal dimension and trabecular thickness through micro-CT slices for different grafts and controls. Eight canines underwent surgery to remove a bone volume (defect) in the canine’s jaw at a total of 44 different locations. We kept 11 defects empty for control and filled the remaining ones with three regenerative materials; NanoGen (NG), a FDA-approved material (n=11), a novel NanoCalcium Sulfate (NCS) material (n=11) and NCS alginate (NCS+alg) material (n=11). After a minimum of four and eight weeks, the canines were sacrificed and the jaw samples were extracted. We used a custom-built micro-CT system to acquire the data volume and developed software to measure the bone yield, fractal dimension and trabecular thickness. The software used a segmentation algorithm based on histograms derived from volumes of interest indicated by the operator. Using bone yield and fractal dimension as indices we are able to differentiate between the control and regenerative material (p<0.005). Regenerative material NCS showed an average 63.15% bone yield improvement over the control sample, NCS+alg showed 55.55% and NanoGen showed 37.5%. The bone regeneration process and quality of bone were dependent upon the position of defect and time period of healing. This study presents one of the first quantitative comparisons using non-destructive Micro-CT analysis for bone regenerative material in a large animal with a critical defect model. Our results indicate that Micro-CT measurement could be used to monitor in-vivo bone regeneration studies for greater regenerative process understanding.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Micro-computed tomography (CT) based assessment of dental regenerative therapy in the canine mandible model

et al. 2015

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“…Fractal and multifractal geometries were applied in different applications in several branches of dental practice [24][25][26][27][28][29]. In the subfield of dental materials, fractal and multifractal analyses have been applied for the quantitative description of the surfaces morphology [30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Surface roughness and morphology of dental nanocomposites polished by four different procedures evaluated by a multifractal approach

Ţălu

Stach

Lainović

et al. 2015

Applied Surface Science

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“…However, the overall reproducibility of the projection techniques remains a contentious issue that requires further investigation. 34 …”

Section: Dental Radiographsmentioning

confidence: 99%

Diagnostic imaging of trabecular bone microstructure for oral implants: a literature review

Ibrahim¹,

Parsa²,

Hassan³

et al. 2013

Dentomaxillofacial Radiology

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Several dental implant studies have reported that radiographic evaluation of bone quality can aid in reducing implant failure. Bone quality is assessed in terms of its quantity, density, trabecular characteristics and cells. Current imaging modalities vary widely in their efficiency in assessing trabecular structures, especially in a clinical setting. Most are very costly, require an extensive scanning procedure coupled with a high radiation dose and are only partially suitable for patient use. This review examines the current literature regarding diagnostic imaging assessment of trabecular microstructure prior to oral implant placement and suggests cone beam CT as a method of choice for evaluating trabecular bone microstructure.

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Fractals in dentistry

Cited by 95 publications

References 161 publications

Micro-computed tomography (CT) based assessment of dental regenerative therapy in the canine mandible model

Micro-computed tomography (CT) based assessment of dental regenerative therapy in the canine mandible model

Surface roughness and morphology of dental nanocomposites polished by four different procedures evaluated by a multifractal approach

Diagnostic imaging of trabecular bone microstructure for oral implants: a literature review

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