pixel value analysis for detection of simulated early external root resorption
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ID: 225294
2014
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Abstract
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.
| Reference Key |
poleti2014brazilianpixel
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|---|---|
| Authors | ;Marcelo Lupion POLETI;Thais Maria Freire FERNANDES;Camila Cristina PAIZ;Izabel Regina Fischer RUBIRA-BULLEN;Ana Lúcia Alvares CAPELOZZA |
| Journal | journal of information and computational science |
| Year | 2014 |
| DOI |
10.1590/1807-3107BOR-2014.vol28.0045
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