Measurements of simulated periodontal bone defects in inverted digital image and film-based radiograph: an in vitro study
Molon Rafael Scaf de, Morais-Camillo Juliana Aparecida Najarro Dearo, Sakakura Celso Eduardo, Ferreira Mauricio Goncalves, Loffredo Leonor Castro Monteiro, Scaf Gulnara,
소속 상세정보
( Molon Rafael Scaf de ) - Brazil Universidade Estadual Paulista Araraquara Dental School Department of Diagnosis and Surgery
( Morais-Camillo Juliana Aparecida Najarro Dearo ) - Brazil Universidade Estadual Paulista Araraquara Dental School Department of Diagnosis and Surgery
( Sakakura Celso Eduardo ) - Brazil Barretos Educational Fundation Barretos Dental School
( Ferreira Mauricio Goncalves ) - Brazil Universidade Estadual Paulista Araraquara Dental School Department of Diagnosis and Surgery
( Loffredo Leonor Castro Monteiro ) - Brazil Universidade Estadual Paulista Araraquara Dental School Department of Social Dentistry
( Scaf Gulnara ) - Brazil Universidade Estadual Paulista Araraquara Dental School Department of Diagnosis and Surgery
KMID : 1024020120420040243
Abstract
Purpose: This study was performed to compare the inverted digital images and film-based images of dry pig mandibles to measure the periodontal bone defect depth. Materials and Methods: Forty 2-wall bone defects were made in the proximal region of the premolar in the dry pig mandibles. The digital and conventional radiographs were taken using a Schick sensor and Kodak F-speed intraoral film. Image manipulation (inversion) was performed using Adobe Photoshop 7.0 software. Four trained examiners made all of the radiographic measurements in millimeters a total of three times from the cementoenamel junction to the most apical extension of the bone loss with both types of images: inverted digital and film. The measurements were also made in dry mandibles using a periodontal probe and digital caliper. The Student’s t-test was used to compare the depth measurements obtained from the two types of images and direct visual measurement in the dry mandibles. A significance level of 0.05 for a 95% confidence interval was used for each comparison. Results: There was a significant difference between depth measurements in the inverted digital images and direct visual measurements (p>|t|=0.0039), with means of 6.29 mm (IC95%:6.04-6.54) and 6.79 mm (IC95%:6.45-7.11), respectively. There was a non-significant difference between the film-based radiographs and direct visual measurements (p>|t|=0.4950), with means of 6.64mm(IC95%:6.40-6.89) and 6.79mm(IC95%:6.45-7.11), respectively. Conclusion: The periodontal bone defect measurements in the inverted digital images were inferior to film-based radiographs, underestimating the amount of bone loss.
키워드
Digital Radiography; Dental; Radiographic Image Enhancement; Alveolar Bone Loss
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