Fractal dimension and mandibular cortical width in normal and osteoporotic men and women

Sindeaux, Rafael; Figueiredo, Paulo Tadeu de Souza; Melo, Nilce Santos de; Guimarães, Ana Tereza Bittencourt; Lazarte, Leonardo; Pereira, Fernando Borges; Paula, Ana; Leite, André Ferreira

doi:10.1016/j.maturitas.2013.10.011

Cited by 69 publications

(95 citation statements)

References 30 publications

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“…Research by Sindeaux et al confirmed that the fractal dimension values of cortical bone are lower in women with osteoporosis. 20 They proved that fractal analysis can be considered a pre-test to measure bone density, normally used in the diagnosis of osteoporosis. 20 The study by Bianciardi et al shows that the results obtained from the analysis of the fractal images of X-rays of bones directly correlate with the results obtained with ultrasound methods in patients suffering from osteoporosis.…”

Section: Use In Radiologymentioning

confidence: 99%

“…20 They proved that fractal analysis can be considered a pre-test to measure bone density, normally used in the diagnosis of osteoporosis. 20 The study by Bianciardi et al shows that the results obtained from the analysis of the fractal images of X-rays of bones directly correlate with the results obtained with ultrasound methods in patients suffering from osteoporosis. 21 Attempts have been made to develop an automatic testing system of trabecular bone using fractal analysis.…”

Section: Use In Radiologymentioning

confidence: 99%

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The use of fractal analysis in medicine: A literature review

Leszczyński¹,

Sokalski²

2017

Dent. Med. Probl.

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In many areas of science, there is a need to assess the complexity of the analyzed objects. One instrument used to assess this complexity can be fractal analysis, which provides a quantitative measure in the form of a fractal dimension. A fractal dimension is a quantitative parameter used for measuring the complexity of the examined objects. Fractal analysis is the process of information processing, where the input data is an image. The generated information is stored in the form of numbers, an array of numbers, the decision of the text etc. The implementation of the image processing requires a computer system. In the publications of recent years, there is increasing interest in the potential use of fractal analysis in many fields of science, including medicine. Fractal analysis expands the capabilities of the diagnosis of systemic diseases, facilitating and accelerating their examination. In dentistry, the calculation of the fractal dimension can be a tool for early detection of a periapical lesion on the basic X-rays. Fractal analysis can also be a helpful indicator in predicting the primary stability of an implant. On the basis of the literature and own experience, the authors sum up the use of fractal analysis in accordance with current medical knowledge.

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Section: Use In Radiologymentioning

confidence: 99%

Section: Use In Radiologymentioning

confidence: 99%

The use of fractal analysis in medicine: A literature review

Leszczyński¹,

Sokalski²

2017

Dent. Med. Probl.

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“…Os resultados negativos para osso trabecular podem estar, então, relacionados a dois fatores: o primeiro, é a possibilidade do trabeculado na mandíbula não refletir a microarquitetura óssea, como em outros sítios, isto explicaria os resultados divergentes dos poucos estudos que analisaram DF na mandíbula (Yassar e Akgünlü, 2008;Oliveira et al, 2013;Sindeaux, et al, 2014); o segundo ponto a ser considerado é o fato de que o pamidronato age primariamente em osso cortical, com pouco efeito no trabeculado ósseo (Rauch et al, 2003a). Esse resultado negativo também foi encontrado em várias outras pesquisas, na avaliação de adultos (Yasar e Akgünlü, 2006;Sindeaux et al, 2014).…”

Section: Modelo De Variação Do íNdice Mentual Para Crianças Saudáveisunclassified

“…Esse resultado negativo também foi encontrado em várias outras pesquisas, na avaliação de adultos (Yasar e Akgünlü, 2006;Sindeaux et al, 2014).…”

Section: Modelo De Variação Do íNdice Mentual Para Crianças Saudáveisunclassified

“…Um trabalho recente que analisou a dimensão fractal da mandíbula em pacientes com e sem osteoporose encontrou resultados semelhantes para a análise da dimensão fractal da cortical inferior da mandíbula (Sindeaux et al, 2014) De acordo com nossos achados, a cortical inferior da mandíbula das crianças com OI do tipo I têm sua DF aumentada significativamente a partir de 5-10 ciclos de PAM, enquanto que as crianças tipos III e IV apresentam o mesmo resultado apenas após 10 ciclos da medicação. Apesar de terem apresentado um valor de correlação moderado entre si, a significância estatística foi bem menor para a DFCortical que para o índice mentual.…”

Section: Modelo De Variação Do íNdice Mentual Para Crianças Saudáveisunclassified

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Avaliação da qualidade óssea mandibular em crianças com osteogênese imperfeita em uso de pamidronato

Apolinário¹

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Evaluation of bone texture imaging parameters on panoramic radiographs of patients with Sheehan’s syndrome: a STROBE-compliant case-control study

Cavalcante

Castro²,

Quidute

et al. 2019

Osteoporos Int

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Objectives: Sheehan's syndrome (SSH) is an important public health problem characterized as postpartum hypopituitarism secondary to obstetric complications-related ischemic pituitary necrosis that shows significant systemic metabolic repercussion. Thus, this study aimed to evaluate texture parameters in digital panoramic radiographs of patients with SSH. Methods: A case-control study was conducted with 30 SSH patients from an Endocrinology and Diabetology Service of reference in Brazil, and 30 age-and sexmatched healthy controls. A custom computer program measured fractal dimension, lacunarity and some morphologic features in the following mandibular regions of interest (50x50 pixels): below the mental foramen (F1), between the first and second molars (M1), and center of the mandibular ramus (R1). Results: The fractal analysis showed a statistically significant difference between the studied groups in all regions of interest. The fractal dimension in F1 (p = 0.016), M1 (p = 0.043), and R1 (p = 0.028) was significantly lower in SSH group, as well as lacunarity in R1 (p = 0.008). Additionally, several morphologic features were statistically significant in the SSH group (p < 0.05). Conclusion: Therefore, individuals with SSH showed altered imaging texture parameters on panoramic radiographs, which reflect a smaller spatial organization of the bone trabeculae and, possibly, a state of reduced mineral bone density.

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Fractal dimension and mandibular cortical width in normal and osteoporotic men and women

Cited by 69 publications

References 30 publications

The use of fractal analysis in medicine: A literature review

The use of fractal analysis in medicine: A literature review

Avaliação da qualidade óssea mandibular em crianças com osteogênese imperfeita em uso de pamidronato

Evaluation of bone texture imaging parameters on panoramic radiographs of patients with Sheehan’s syndrome: a STROBE-compliant case-control study

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