Systematic review with hierarchical clustering analysis for the fractal dimension in assessment of skeletal bone mineral density using dental radiographs

Leite, André Ferreira; Figueiredo, Paulo Tadeu de Souza; Caracas, Hugo Cesar Pinto Marques; Sindeaux, Rafael; Guimarães, Ana Tereza Bittencourt; Lazarte, Leonardo; Paula, Ana; Melo, Nilce Santos de

doi:10.1007/s11282-014-0188-y

Cited by 14 publications

(19 citation statements)

References 48 publications

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“…It can be calculated by different ways, but the most common method in dental x-rays and CT scans is the box counting due to its easy implementation and access. 31 In general, FD has a good correlation with bone mass 32 and it has been used as a tool to detect early changes in periapical trabecular bone pattern after endodontic treatment. 33,34 In addition, FD associated with CBCT has been utilized to evaluate bone alterations in patients with osteonecrosis linked to bisphosphonates, 35 as well as bone formation in A B Figure 5.…”

Section: Discussionmentioning

confidence: 99%

Hyaluronic acid accelerates bone repair in human dental sockets: a randomized triple-blind clinical trial

et al. 2018

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This study evaluated the effects of hyaluronic acid (HA) on bone repair of human dental sockets. Thirty-two lower first premolars were extracted from 16 patients (2 per patient) for orthodontic reasons. Following the extractions, one socket was randomly filled with 1% HA gel, while the other was allowed to naturally fill with blood clot. After 30 and 90 days of surgery, patients underwent cone beam computed tomography. Five central orthoradial slices were captured from each socket. The gray intensity was measured in each image and results were reported as mean percentage of bone formation. The buccolingual alveolar ridge width was measured and dimensional changes were compared between the postoperative intervals. The pattern of alveolar trabecular bone was evaluated through the fractal dimension. Treated sockets showed a higher percentage of bone formation and fractal dimension values (58.17% and 1.098, respectively) compared with controls (48.97% and 1.074, respectively) in the 30-day postoperative period (p < 0.05). After 90 days, there was no significant difference between groups. Additionally, no significant difference was found between groups regarding the alveolar dimensions (p > 0.05). Use of 1% HA gel after tooth extraction accelerates bone repair in human dental sockets.

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Section: Discussionmentioning

confidence: 99%

Hyaluronic acid accelerates bone repair in human dental sockets: a randomized triple-blind clinical trial

et al. 2018

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“…Another study assessed the treatment effectiveness of guided bone regeneration in cases of post-resectal and post-cystal bone loss on DIR images obtained using RVG 6100 digital radiography equipment (Kodak) [16]. Fractal dimension measurements (power spectral density, triangular prism surface area, blanket, intensity difference scaling, and variogram methods) were performed, and the images became smoother during the healing process after bone loss [35].…”

Section: Discussionmentioning

confidence: 99%

Use of Texture Feature Maps for the Refinement of Information Derived from Digital Intraoral Radiographs of Lytic and Sclerotic Lesions

et al. 2019

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The aim of this study was to examine whether additional digital intraoral radiography (DIR) image preprocessing based on textural description methods improves the recognition and differentiation of periapical lesions. (1) DIR image analysis protocols incorporating clustering with the k-means approach (CLU), texture features derived from co-occurrence matrices, first-order features (FOF), gray-tone difference matrices, run-length matrices (RLM), and local binary patterns, were used to transform DIR images derived from 161 input images into textural feature maps. These maps were used to determine the capacity of the DIR representation technique to yield information about the shape of a structure, its pattern, and adequate tissue contrast. The effectiveness of the textural feature maps with regard to detection of lesions was revealed by two radiologists independently with consecutive interrater agreement. (2) High sensitivity and specificity in the recognition of radiological features of lytic lesions, i.e., radiodensity, border definition, and tissue contrast, was accomplished by CLU, FOF energy, and RLM. Detection of sclerotic lesions was refined with the use of RLM. FOF texture contributed substantially to the high sensitivity of diagnosis of sclerotic lesions. (3) Specific DIR texture-based methods markedly increased the sensitivity of the DIR technique. Therefore, application of textural feature mapping constitutes a promising diagnostic tool for improving recognition of dimension and possibly internal structure of the periapical lesions.

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“…The evaluation of BMD by DEXA scan is the gold standard method for assessing the osteoporotic risk (WHO, 2003). Most of the studies have used calcaneal BMD less frequently in comparison to DEXA [7]. Studies on calcaneus BMD have a great advantage compared to other skeletal bones, and the measurements are not affected by local factors such as spinal deformation and fractures [12].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, each imaging modality has its own non-linear artifacts such as resolution and quantization. FD analysis of cone beam CT images warrants further investigations, as only one study has used this imaging modality [7].…”

Section: Discussionmentioning

confidence: 99%

“…Although many studies have been performed using fractal analysis to determine osteoporosis, many authors have not demonstrated the roles of standardized resolution and location of the region of interest (ROI) [7]. With this background, the aim of our study was to compare and estimate the measurements of the trabecular bone using standardized pixel dimension and defined regions of interest in both the groups.…”

Section: Introductionmentioning

confidence: 99%

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Fractal Analysis of Trabecular Bone Pattern in the Mandible as an Indicator of Osteoporosis in Women - A Clinical Study

Vijayalakshmi

Krithika

Raghuram

et al. 2018

Asian J Pharm Clin Res

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Objectives: The objectives of this study were to estimate and compare the measurement of trabecular bone pattern in the mandible of normal and osteoporotic volunteers. Methods:A 43 female volunteers were selected as osteoporotic (n=43) group and 30 as normal (n=30) group with age ranging from 25 to 60 years were enrolled based on bone mineral densitometer (BMD) in the calcaneus bone. A detailed case history followed by digital periapical radiograph was performed. The mandibular trabecular bone pattern in these volunteers was determined using Image J software, after standardizing the pixel size and locations of the region of interest for three different regions between the two groups. Statistical analysis using independent t-test and Pearson coefficient was performed. Results:Results showed a significant difference in mean BMD values between the groups (0.52 in normal and −3.22 in osteoporotic). There are no significant differences in mean fractal dimension values between the groups (0.83 in normal and 0.82 in osteoporotic). Pearson correlation coefficient shows no significant correlation between the groups at three sites (p˃0.001). Conclusion:Although trabecular bone microstructure on an intraoral radiograph plays a key role in defining osteoporosis, the present study did not show any significant difference in its architecture between normal and osteoporotic individuals as defined by BMD. Therefore, further studies should be performed using better-standardized resolution strategies and different estimation methods to gain more insight.

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Systematic review with hierarchical clustering analysis for the fractal dimension in assessment of skeletal bone mineral density using dental radiographs

Cited by 14 publications

References 48 publications

Hyaluronic acid accelerates bone repair in human dental sockets: a randomized triple-blind clinical trial

Hyaluronic acid accelerates bone repair in human dental sockets: a randomized triple-blind clinical trial

Use of Texture Feature Maps for the Refinement of Information Derived from Digital Intraoral Radiographs of Lytic and Sclerotic Lesions

Fractal Analysis of Trabecular Bone Pattern in the Mandible as an Indicator of Osteoporosis in Women - A Clinical Study

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