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Mandibular bone changes in sickle cell anemia: fractal analysis

Objectives The radiographic changes of mandibular bone texture was evaluated in patients with sickle cell anemia (SCA) and healthy controls. Fractal analysis was employed. Study design Thirty-five individuals (age range 11 to 40 years) who had been diagnosed as having homozygous SCA were enrolled as...

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Published in:Oral surgery, oral medicine, oral pathology, oral radiology and endodontics oral medicine, oral pathology, oral radiology and endodontics, 2008-07, Vol.106 (1), p.e41-e48
Main Authors: Demirbaş, Ayşegül Kaya, Ergün, Selin, PhD, DDS, Güneri, Pelin, Aktener, B. Oğuz, Boyacıoğlu, Hayal, PhD
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container_title Oral surgery, oral medicine, oral pathology, oral radiology and endodontics
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description Objectives The radiographic changes of mandibular bone texture was evaluated in patients with sickle cell anemia (SCA) and healthy controls. Fractal analysis was employed. Study design Thirty-five individuals (age range 11 to 40 years) who had been diagnosed as having homozygous SCA were enrolled as the patient group. Twenty-six healthy individuals within the same age range constituted the controls. Panoramic radiographs of all subjects were obtained using analog film and then digitized. All procedures for calculation of the fractal dimension were performed using Image J version 1.34s software (National Institutes of Health, Bethesda, MD). ROIs were selected as 64 × 64 pixel-sized squares, which were located between the first molar and second premolar teeth of the right mandibular segment. The fractal dimension (FD) was calculated by using the box-counting function. FD values of SCA and control groups were analyzed statistically by using Student t tests; alpha was set at 0.05. Results The FD values for SCA patients were different from those of the healthy controls (mean FD SCA = 1.6855; mean FD controls = 1.7196); with a significance of P = .050. FD values for the SCA group had higher standard deviations (SD) than was the case for the healthy controls (SCA SD = 0.0859, control SD = 0.0459). When individuals were subclassified according to their age being younger than 20 or 20 years and over, the mean FD values of patients under 20 years of age were significantly lower than both the SCA patients over 20 years of age and all of the healthy controls ( P < .05). Conclusion SCA patients under age 20 years showed lower FD values than the controls and this finding pointed to scarcity of trabecular bone in this group.
doi_str_mv 10.1016/j.tripleo.2008.03.007
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The fractal dimension (FD) was calculated by using the box-counting function. FD values of SCA and control groups were analyzed statistically by using Student t tests; alpha was set at 0.05. Results The FD values for SCA patients were different from those of the healthy controls (mean FD SCA = 1.6855; mean FD controls = 1.7196); with a significance of P = .050. FD values for the SCA group had higher standard deviations (SD) than was the case for the healthy controls (SCA SD = 0.0859, control SD = 0.0459). When individuals were subclassified according to their age being younger than 20 or 20 years and over, the mean FD values of patients under 20 years of age were significantly lower than both the SCA patients over 20 years of age and all of the healthy controls ( P &lt; .05). Conclusion SCA patients under age 20 years showed lower FD values than the controls and this finding pointed to scarcity of trabecular bone in this group.</description><identifier>ISSN: 1079-2104</identifier><identifier>EISSN: 1528-395X</identifier><identifier>DOI: 10.1016/j.tripleo.2008.03.007</identifier><identifier>PMID: 18585611</identifier><language>eng</language><publisher>United States: Mosby, Inc</publisher><subject>Adolescent ; Adult ; Anemia, Sickle Cell - pathology ; Bone Density ; Case-Control Studies ; Child ; Dentistry ; Female ; Fractals ; Humans ; Image Processing, Computer-Assisted ; Male ; Mandible - blood supply ; Mandible - diagnostic imaging ; Mandible - pathology ; Radiography, Panoramic ; Surgery</subject><ispartof>Oral surgery, oral medicine, oral pathology, oral radiology and endodontics, 2008-07, Vol.106 (1), p.e41-e48</ispartof><rights>Mosby, Inc.</rights><rights>2008 Mosby, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c418t-d4d73010a89f513ac5e873a9009ebf8f3c9d0012141da81df96a9cd3dd9249173</citedby><cites>FETCH-LOGICAL-c418t-d4d73010a89f513ac5e873a9009ebf8f3c9d0012141da81df96a9cd3dd9249173</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18585611$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Demirbaş, Ayşegül Kaya</creatorcontrib><creatorcontrib>Ergün, Selin, PhD, DDS</creatorcontrib><creatorcontrib>Güneri, Pelin</creatorcontrib><creatorcontrib>Aktener, B. 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Oğuz</au><au>Boyacıoğlu, Hayal, PhD</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mandibular bone changes in sickle cell anemia: fractal analysis</atitle><jtitle>Oral surgery, oral medicine, oral pathology, oral radiology and endodontics</jtitle><addtitle>Oral Surg Oral Med Oral Pathol Oral Radiol Endod</addtitle><date>2008-07-01</date><risdate>2008</risdate><volume>106</volume><issue>1</issue><spage>e41</spage><epage>e48</epage><pages>e41-e48</pages><issn>1079-2104</issn><eissn>1528-395X</eissn><abstract>Objectives The radiographic changes of mandibular bone texture was evaluated in patients with sickle cell anemia (SCA) and healthy controls. Fractal analysis was employed. Study design Thirty-five individuals (age range 11 to 40 years) who had been diagnosed as having homozygous SCA were enrolled as the patient group. Twenty-six healthy individuals within the same age range constituted the controls. Panoramic radiographs of all subjects were obtained using analog film and then digitized. All procedures for calculation of the fractal dimension were performed using Image J version 1.34s software (National Institutes of Health, Bethesda, MD). ROIs were selected as 64 × 64 pixel-sized squares, which were located between the first molar and second premolar teeth of the right mandibular segment. The fractal dimension (FD) was calculated by using the box-counting function. FD values of SCA and control groups were analyzed statistically by using Student t tests; alpha was set at 0.05. Results The FD values for SCA patients were different from those of the healthy controls (mean FD SCA = 1.6855; mean FD controls = 1.7196); with a significance of P = .050. FD values for the SCA group had higher standard deviations (SD) than was the case for the healthy controls (SCA SD = 0.0859, control SD = 0.0459). 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subjects Adolescent
Adult
Anemia, Sickle Cell - pathology
Bone Density
Case-Control Studies
Child
Dentistry
Female
Fractals
Humans
Image Processing, Computer-Assisted
Male
Mandible - blood supply
Mandible - diagnostic imaging
Mandible - pathology
Radiography, Panoramic
Surgery
title Mandibular bone changes in sickle cell anemia: fractal analysis
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