Artículos de revistas
Gray Scale Inversion In Digital Image For Measurement Of Tooth Length
Registro en:
Brazilian Dental Journal. , v. 23, n. 6, p. 703 - 706, 2012.
1036440
10.1590/S0103-64402012000600013
2-s2.0-84872966565
Autor
Oliveira M.L.
Vieira M.L.
Cruz A.D.
Boscolo F.N.
De Almeida S.M.
Institución
Resumen
The aim of this study was to assess the applicability of gray scale inversion in performing digital linear endodontic measurements. Standardized digital images were taken of 40 extracted human permanent single-rooted teeth with K-files size 15 placed at different lengths in the root canal, using the CDR Wireless® digital system. All images were treated with Positive, a digital tool that inverts the grayscale value. Eight radiologists measured the distance between the lower limit of the rubber stop and the tip of the file on both original and positive images. After 15 days, they repeated this procedure in 50% of the image samples. The intra- and inter-examiner agreement was analyzed by intraclass correlation test, and the comparison between the two image groups and the actual lengths by the Student's t-test (α=0.05). Intra- and inter-examiner evaluation showed high reproducibility (r>0.95) of both original and positive images. No statistically significant differences (p>0.05) were found between measurements performed on original and positive images, but both differed significantly from the actual lengths (p<0.05). Gray scale inversion has low applicability in measuring endodontic files, since it did not improve the accuracy of measurements. 23 6 703 706 Wenzel, A., A review of dentists' use of digital radiography and caries diagnosis with digital systems (2006) Dentomaxillofac Radiol, 35, pp. 307-314 Ludlow, J.B., Mol, A., (2009), pp. p78-99. , Oral radiology: principles and interpretation. White SC, Pharoah MJ (Editor). 6th ed. St. Louis, MO: MosbyWoolhiser, G.A., Brand, J.W., Hoen, M.M., Geist, J.R., Pikula, A.A., Pink, F.E., Accuracy of film-based, digital, and enhanced digital images for endodontic length determination (2005) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 99, pp. 499-504 Ding, J., Gutmann, J.L., Fan, B., Lu, Y., Chen, H., Investigation of apex locators and related morphological factors (2010) J Endod, 36, pp. 1399-1403 Souza, R.A., Sousa, Y.T., de Figueiredo, J.A., Dantas, J.C., Colombo, S., Pécora, J.D., Influence of apical foramen lateral opening and file size on cemental canal instrumentation (2012) Braz Dent J, 23, pp. 122-126 Kal, B.I., Baksi, B.G., Dündar, N., Sen, B.H., Effect of various digital processing algorithms on the measurement accuracy of endodontic file length (2007) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 103, pp. 280-284 Oliveira, M.L., Ambrosano, G.M., Almeida, S.M., Haiter-Neto, F., Tosoni, G.M., Efficacy of several digital radiographic imaging systems for laboratory determination of endodontic file length (2011) Int Endod J, 44, pp. 469-473 Friedlander, L.T., Love, R.M., Chandler, N.P., A comparison of phosphor-plate digital images with conventional radiographs for the perceived clarity of fine endodontic files and periapical lesions (2002) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 93, pp. 21-27 Brüllmann, D.D., Röhrig, B., Sulayman, S.L., Schulze, R., Length of endodontic files measured in digital radiographs with and without noise-suppression filters: An ex-vivo study (2011) Dentomaxillofac Radiol, 40, pp. 170-176 Kamburoǧlu, K., Murat, S., Pehlivan, S.Y., The effects of digital image enhancement on the detection of vertical root fracture (2010) Dent Traumatol, 26, pp. 47-51 Kamburoǧlu, K., Barenboim, S., Kaffe, I., Comparison of conventional film with different digital and digitally filtered images in the detection of simulated internal resorption cavities-an ex vivo study in human cadaver jaws (2008) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 105, pp. 790-797 Paludo, L., Souza, S.L., Só, M.V., Rosa, R.A., Vier-Pelisser, F.V., Duarte, M.A., An in vivo radiographic evaluation of the accuracy of Apex and iPex electronic Apex locators (2012) Braz Dent J, 23, pp. 54-58 Vasconcelos, B.C., Matos, L.A., Pinheiro-Júnior, E.C., Menezes, A.S., Vivacqua-Gomes, N., Ex vivo accuracy of three electronic apex locators using different apical file sizes (2012) Braz Dent J, 23, pp. 199-204 de Oliveira, M.L., Pinto, G.C., Ambrosano, G.M., Tosoni, G.M., Effect of combined digital imaging parameters on endodontic file measurements (2012) J Endod, 38, pp. 1404-1407 Shanmugaraj, M., Nivedha, R., Mathan, R., Balagopal, S., Evaluation of working length determination methods: An in vivo/ex vivo study (2007) Indian J Dent Res, 18, pp. 60-62 Velders, X.L., Sanderink, G.C., van der Stelt, P.F., Dose reduction of two digital sensor systems measuring file lengths (1996) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 81, pp. 607-612 Wenzel, A., Kirkevang, L.L., Students' attitudes to digital radiography and measurement accuracy of two digital systems in connection with root canal treatment (2004) Eur J Dent Educ, 8, pp. 167-171