Comparative Assessment in Measurement the Distance from Cementoenamel Junction (CEJ)to Alveolar Crest on Original and Inverted Digital Radiograph

Document Type : Original Article


1 Assisstant Professor of Radiology.Department of Radiology, Faculty of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

2 Assistant Professor of Radiology.Department of Radiology, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

3 Assisstant Professor of Endodontics.Department of Endodontics, Faculty of Dentistry, Hamedan University of Medical Sciences, Hamedan, Iran.


Background and Objective: Recently, most digital imaging systems provide the option of image post-processing with different techniques. Thus, the aim of present study was to compare the measurement of distance from CEJ to alveolar crest on original & inverted digital radiograph.
Materials and Methods: In this experimental study, 29 extracted anterior and posterior teeth on Ahvaz dental clinics were gathered and were placed on 10 ovine mandibles. Distance between CEJ to alveolar crest were measured by caliper. Digital radiograph (parallel technique) were exposed on Digora Optime system. Fifty eight points of proximal surfaces for measuring the CEJ to alveolar crest were marked up. The unfiltered and filtered (inverted filter) images were evaluated by two observers. Data was statistically analyzed using SPSS software and repeated measurement test.
Results: Mean for registered data for gold standard (measured by caliper) was 5.5501 and for registered data for first observer on filtered and unfiltered images were 5.0025 and 5.1379 respectively. This means for the same parameters by a second observer were calculated as 5.1483 and 5.0103 respectively. There was no significant difference between original radiograph and the filtered radiograph.
Conclusion: According to the results of the present study there is no significant difference in digital radiograph comparing with and without inverted filter to the gold standard. Thus, there is no priority on using any of the original and inverted digital radiography.


1-Bushong SC. Radiologic science for technologists: physics, biology, and protection: Elsevier Health Sciences; 2013; 12(2): 33-37.
2-Parks ET, Williamson GF. Digital radiography: an overview. J Contemp Dent Pract. 2002;3(4):23-39.
3-Shah Abouei M, Hekmatian E,  Adibrad M,  Bahador Ghobadi A. Accuracy of vertical bitewing and bisect periapical radiography techniques in anterior mandibular teeth interdental bone resorption. Journal of Isfahan Dental School 2009; 5(3): 126-133.
4-Sarkarat FAS, Donia%A Bohlooli, Behnam%A Lozani, Saviz. Ridge preservation with OSSEO+ compared to Cenobone for implant site development: a clinical and histologic study in humans. journal of research in dental sciences. 2010;7(3):1-6.
5-Ezoddini Ardakani FAM, R%A Akbari, S%A Haerian Ardakani, A%A Javadi-Shalmani, J. A Comparison of Panoramic, Periapical and Bite Wing Radiographies in Evaluation of Alveolar Bone Loss in Periodiontitis. The Journal of Shahid Sadoughi University of Medical Sciences. 2007;15(2):22-30.
6-Moradi Haghgoo JAP, Farzad%A Ghasri, Soheila%A Khoshhal, Masoomeh%A Torkzaban, Parviz%A Arabi, Seyyed Reza%A Rabienejad, Nazli. Comparative Study of Accuracy in E Speed Intra Oral Films, PSP Intra Oral Digital System and Panoramic Digital Systems (PSP&CCD) for Identifying the Extent of Alveolar Bone Loss in Patients with Chronic Periodontitis. Scientific Journal of Hamadan University of Medical Sciences. 2014;21(1):41-8.
7-Mehralizadeh SAM, Peyman%A Taghizadeh, Sima%A Edalat, Maryam%A Mohebi, Mahashad. Reverse contrast enhancement in digital radiography in detection of vertical root fracture (in vitro). Journal of Dental Medicine. 2015;28(2):115-21.
8-sakhdari sAm, sandra%A dadresanfar, bahareh%A hakim, maryam%A Kharazifard, Mohammad javad. Accuracy of reverse contrast option of digital radiography in detection of horizontal root fracture.( in vitro ). journal of research in dental sciences. 2011;8(2):68-74.
9-The Journal of Islamic Dental Association of IRAN (JIDA). 2014;26(2):124-30.
10-Dabaghi A, Habibikia A,  Abasi S ,  Niroomand N,  Mohagheghi SA, Sharifi S. Efficacy of Different Image Processing Filters for the Detection of Proximal Recurrent Caries in Digital Bitewing Radiographs. Jundishapur Scientific Medical Journal. 2015; 14(2): 158-166.
11-Di Benedetto A, Gigante I, Colucci S, Grano M. Periodontal disease: linking the primary inflammation to bone loss. Clinical and Developmental Immunology. 2013;2013.
12-Ezoddini Ardakani FAGP, D.%A Soltani Mohammadabady, M. Comparison of the accuracy of digital and conventional radiography in evaluation of curved canals lengths. Journal of Dental Medicine. 2005;18(3):66-74.
13-Sharifi Shooshtari S, Abbasi S, Fatahian S, Niroomand N, Habibi Kia A, Azizian M, et al. Evaluation of the Diagnostic Accuracy of Indirect Conventional and Inverted Processing Digital (PSP) Radiograph Images in Periapical Lesions. Jundishapur Scientific Medical Journal. 2015;14(3):263-72.
14-Akarslan Z, Akdevelioğlu M, Güngör K, Erten H. A comparison of the diagnostic accuracy of bitewing, periapical, unfiltered and filtered digital panoramic images for approximal caries detection in posterior teeth. Dentomaxillofacial Radiology. 2014.
15-Dabbaghi A, Abbasi S, Shams N, Niroomand N, Habibikia A. Efficacy of image processing filters in the detection of proximal caries in digital bitewing radiograph. Jundishapur Scientific Medical Journal. 2015;14(2):169-80.