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Digital subtraction radiography evaluation of the bone repair process of chronic apical periodontitis after root canal treatment.
Int Endod J. 2010 Aug; 43(8):673-80.IE

Abstract

AIM

To monitor radiographically the progress of bone repair within chronic periapical lesions after root canal treatment using digital subtraction radiography (DSR).

METHODOLOGY

Twelve patients with 17 single-rooted teeth with chronic apical periodontitis associated with an infected necrotic pulp were selected for root canal treatment. Periapical radiographs were taken before treatment (baseline) and immediately post-treatment, 45, 90, 135 and 180 days after treatment. The radiographic protocol included the use of individualized film holders with silicone bite blocks. The six radiographic images were digitized and submitted to digital subtraction using DSR software, resulting in five subtracted images (SI). Quantitative analysis of these SI was performed using Image Tool software to assess pixel value changes, considering a step-wedge as the gold standard and a cut-off value of 128 pixels. The aim was to identify any increase or decrease in mineral density in the region of the periapical lesion.

RESULTS

A minor decrease in mineral density at the canal filling session and a significant progressive mineral gain in the following evaluations (P < 0.001) occurred. Pairwise comparison of pixel grey values revealed that only the 180-day follow-up differed significantly from the previous SI.

CONCLUSION

Digital subtraction radiography is a useful method for evaluating the progress of bone repair after root canal treatment. Noticeable mineral gain was observed approximately 90 days after root canal filling and definite bone repair after 180 days.

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Authors+Show Affiliations

Benfica e Silva J
Department of Oral Medicine, School of Dentistry, Federal University of Goiás, Goiânia, Brazil.
Leles CR
No affiliation info available
Alencar AH
No affiliation info available
Nunes CA
No affiliation info available
Mendonça EF
No affiliation info available

MeSH

AdolescentAdultAlveolar Bone LossBone RegenerationChronic PeriodontitisDental Pulp NecrosisFemaleHumansImage Processing, Computer-AssistedMaleMiddle AgedPeriapical PeriodontitisRadiography, Dental, DigitalRoot Canal TherapySubtraction TechniqueYoung Adult

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

20491984

Citation

Benfica e Silva, J, et al. "Digital Subtraction Radiography Evaluation of the Bone Repair Process of Chronic Apical Periodontitis After Root Canal Treatment." International Endodontic Journal, vol. 43, no. 8, 2010, pp. 673-80.
Benfica e Silva J, Leles CR, Alencar AH, et al. Digital subtraction radiography evaluation of the bone repair process of chronic apical periodontitis after root canal treatment. Int Endod J. 2010;43(8):673-80.
Benfica e Silva, J., Leles, C. R., Alencar, A. H., Nunes, C. A., & Mendonça, E. F. (2010). Digital subtraction radiography evaluation of the bone repair process of chronic apical periodontitis after root canal treatment. International Endodontic Journal, 43(8), 673-80. https://doi.org/10.1111/j.1365-2591.2010.01735.x
Benfica e Silva J, et al. Digital Subtraction Radiography Evaluation of the Bone Repair Process of Chronic Apical Periodontitis After Root Canal Treatment. Int Endod J. 2010;43(8):673-80. PubMed PMID: 20491984.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Digital subtraction radiography evaluation of the bone repair process of chronic apical periodontitis after root canal treatment. AU - Benfica e Silva,J, AU - Leles,C R, AU - Alencar,A H G, AU - Nunes,C A B C M, AU - Mendonça,E F, Y1 - 2010/05/11/ PY - 2010/5/25/entrez PY - 2010/5/25/pubmed PY - 2010/10/26/medline SP - 673 EP - 80 JF - International endodontic journal JO - Int Endod J VL - 43 IS - 8 N2 - AIM: To monitor radiographically the progress of bone repair within chronic periapical lesions after root canal treatment using digital subtraction radiography (DSR). METHODOLOGY: Twelve patients with 17 single-rooted teeth with chronic apical periodontitis associated with an infected necrotic pulp were selected for root canal treatment. Periapical radiographs were taken before treatment (baseline) and immediately post-treatment, 45, 90, 135 and 180 days after treatment. The radiographic protocol included the use of individualized film holders with silicone bite blocks. The six radiographic images were digitized and submitted to digital subtraction using DSR software, resulting in five subtracted images (SI). Quantitative analysis of these SI was performed using Image Tool software to assess pixel value changes, considering a step-wedge as the gold standard and a cut-off value of 128 pixels. The aim was to identify any increase or decrease in mineral density in the region of the periapical lesion. RESULTS: A minor decrease in mineral density at the canal filling session and a significant progressive mineral gain in the following evaluations (P < 0.001) occurred. Pairwise comparison of pixel grey values revealed that only the 180-day follow-up differed significantly from the previous SI. CONCLUSION: Digital subtraction radiography is a useful method for evaluating the progress of bone repair after root canal treatment. Noticeable mineral gain was observed approximately 90 days after root canal filling and definite bone repair after 180 days. SN - 1365-2591 UR - https://www.unboundmedicine.com/medline/citation/20491984/Digital_subtraction_radiography_evaluation_of_the_bone_repair_process_of_chronic_apical_periodontitis_after_root_canal_treatment_ L2 - https://doi.org/10.1111/j.1365-2591.2010.01735.x DB - PRIME DP - Unbound Medicine ER -