Pixel value analysis for detection of simulated early external root resorption
The aim of this study was to determine the efficacy of pixel value analysis using images generated by the Digora™ and Visualix™ systems for the early detection of external root resorption (ERR). Thirty extracted human lower incisors were radiographed using the Digora and Visualix systems; then, ERR was induced by immersing the teeth in 6 mol L-1 of hydrochloric acid for different periods of time (10, 30 and 60 minutes). ERR was confirmed by calcium quantification with an atomic absorption spectrophotometer. One digital image was acquired per time period at 70 kVp, 7 mA, 2.2 mm filtration, focus-film distance of 30 cm, and with exposure times of 0.09 s in the Digora system and 0.05 s in Visualix system. The region of interest was defined using ImageJ software. Statistical analysis was performed using ANOVA and Pearson’s correlation (p < 0.05). There was no statistically significant difference between the time for ERR induction and the pixel values with either system. A positive correlation between the time of ERR induction and the calcium concentration was observed (r = 0.8892; p < 0.001). In conclusion, independent of the site of ERR induction and the digital system, pixel value analysis was not effective for ERR detection.
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Sociedade Brasileira de Pesquisa Odontológica - SBPqO
2014
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oai:scielo:S1806-832420140001002552018-09-17Pixel value analysis for detection of simulated early external root resorptionPOLETI,Marcelo LupionFERNANDES,Thais Maria FreirePAIZ,Camila CristinaRUBIRA-BULLEN,Izabel Regina FischerCAPELOZZA,Ana Lúcia Alvares Radiography Dental Digital Root Resorption Early Diagnosis The aim of this study was to determine the efficacy of pixel value analysis using images generated by the Digora™ and Visualix™ systems for the early detection of external root resorption (ERR). Thirty extracted human lower incisors were radiographed using the Digora and Visualix systems; then, ERR was induced by immersing the teeth in 6 mol L-1 of hydrochloric acid for different periods of time (10, 30 and 60 minutes). ERR was confirmed by calcium quantification with an atomic absorption spectrophotometer. One digital image was acquired per time period at 70 kVp, 7 mA, 2.2 mm filtration, focus-film distance of 30 cm, and with exposure times of 0.09 s in the Digora system and 0.05 s in Visualix system. The region of interest was defined using ImageJ software. Statistical analysis was performed using ANOVA and Pearson’s correlation (p < 0.05). There was no statistically significant difference between the time for ERR induction and the pixel values with either system. A positive correlation between the time of ERR induction and the calcium concentration was observed (r = 0.8892; p < 0.001). In conclusion, independent of the site of ERR induction and the digital system, pixel value analysis was not effective for ERR detection.info:eu-repo/semantics/openAccessSociedade Brasileira de Pesquisa Odontológica - SBPqOBrazilian Oral Research v.28 n.1 20142014-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242014000100255en10.1590/1807-3107BOR-2014.vol28.0045 |
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POLETI,Marcelo Lupion FERNANDES,Thais Maria Freire PAIZ,Camila Cristina RUBIRA-BULLEN,Izabel Regina Fischer CAPELOZZA,Ana Lúcia Alvares |
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POLETI,Marcelo Lupion FERNANDES,Thais Maria Freire PAIZ,Camila Cristina RUBIRA-BULLEN,Izabel Regina Fischer CAPELOZZA,Ana Lúcia Alvares Pixel value analysis for detection of simulated early external root resorption |
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POLETI,Marcelo Lupion FERNANDES,Thais Maria Freire PAIZ,Camila Cristina RUBIRA-BULLEN,Izabel Regina Fischer CAPELOZZA,Ana Lúcia Alvares |
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POLETI,Marcelo Lupion |
title |
Pixel value analysis for detection of simulated early external root resorption |
title_short |
Pixel value analysis for detection of simulated early external root resorption |
title_full |
Pixel value analysis for detection of simulated early external root resorption |
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Pixel value analysis for detection of simulated early external root resorption |
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Pixel value analysis for detection of simulated early external root resorption |
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pixel value analysis for detection of simulated early external root resorption |
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The aim of this study was to determine the efficacy of pixel value analysis using images generated by the Digora™ and Visualix™ systems for the early detection of external root resorption (ERR). Thirty extracted human lower incisors were radiographed using the Digora and Visualix systems; then, ERR was induced by immersing the teeth in 6 mol L-1 of hydrochloric acid for different periods of time (10, 30 and 60 minutes). ERR was confirmed by calcium quantification with an atomic absorption spectrophotometer. One digital image was acquired per time period at 70 kVp, 7 mA, 2.2 mm filtration, focus-film distance of 30 cm, and with exposure times of 0.09 s in the Digora system and 0.05 s in Visualix system. The region of interest was defined using ImageJ software. Statistical analysis was performed using ANOVA and Pearson’s correlation (p < 0.05). There was no statistically significant difference between the time for ERR induction and the pixel values with either system. A positive correlation between the time of ERR induction and the calcium concentration was observed (r = 0.8892; p < 0.001). In conclusion, independent of the site of ERR induction and the digital system, pixel value analysis was not effective for ERR detection. |
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Sociedade Brasileira de Pesquisa Odontológica - SBPqO |
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2014 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242014000100255 |
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AT poletimarcelolupion pixelvalueanalysisfordetectionofsimulatedearlyexternalrootresorption AT fernandesthaismariafreire pixelvalueanalysisfordetectionofsimulatedearlyexternalrootresorption AT paizcamilacristina pixelvalueanalysisfordetectionofsimulatedearlyexternalrootresorption AT rubirabullenizabelreginafischer pixelvalueanalysisfordetectionofsimulatedearlyexternalrootresorption AT capelozzaanaluciaalvares pixelvalueanalysisfordetectionofsimulatedearlyexternalrootresorption |
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