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Evaluation of periapical changes following endodontic therapy: digital subtraction technique compared with computerized morphometric analysis.
Dentomaxillofac Radiol. 2009 Oct; 38(7):438-44.DR

Abstract

OBJECTIVES

The aim of this study was to compare two methods for the evaluation of periapical lesion changes following endodontic therapy (digital subtraction technique and morphometric analysis) by outlining the radiolucent area.

METHODS

13 human anterior teeth with pulp necrosis and chronic periapical lesions were used. Periapical radiographs were taken immediately after endodontic therapy (0) and then 2 months, 4 months and 6 months post treatment, using an intraoral radiographic film holder stabilized with impression material. The films were processed in a standard manner and the digitized images were submitted to digital subtraction using Adobe Photoshop 6.0. New bone formation or bone resorption areas were then measured. In the morphometric analysis, the periapical lesions were outlined using VixWin 2000 and the area (in square millimetres) was recorded. The obtained data were submitted to agreement analysis for comparison of the two techniques.

RESULTS

There was no correlation between the areas of radiographic changes detected by digital subtraction and periapical lesion outline (r = 0.02-0.45). The new bone formation areas observed by digital subtraction presented higher values, with bone changes being especially evident in the 2 month follow-up radiographs, which suggests a higher sensitivity for this method.

CONCLUSIONS

Both methods are suitable for the evaluation of periapical lesion changes, but the digital subtraction technique is more sensitive for detecting radiographic periapical changes.

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Authors+Show Affiliations

Carvalho FB
Department of Restorative Dentistry, São Paulo State University, UNESP, Araraquara, Brazil.
Gonçalves M
No affiliation info available
Guerreiro-Tanomaru JM
No affiliation info available
Tanomaru-Filho M
No affiliation info available

MeSH

Chronic DiseaseDental Pulp NecrosisFollow-Up StudiesHumansPeriapical DiseasesRadiographic Image EnhancementRoot Canal TherapySoftwareSubtraction TechniqueUser-Computer Interface

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

19767513

Citation

Carvalho, F B., et al. "Evaluation of Periapical Changes Following Endodontic Therapy: Digital Subtraction Technique Compared With Computerized Morphometric Analysis." Dento Maxillo Facial Radiology, vol. 38, no. 7, 2009, pp. 438-44.
Carvalho FB, Gonçalves M, Guerreiro-Tanomaru JM, et al. Evaluation of periapical changes following endodontic therapy: digital subtraction technique compared with computerized morphometric analysis. Dentomaxillofac Radiol. 2009;38(7):438-44.
Carvalho, F. B., Gonçalves, M., Guerreiro-Tanomaru, J. M., & Tanomaru-Filho, M. (2009). Evaluation of periapical changes following endodontic therapy: digital subtraction technique compared with computerized morphometric analysis. Dento Maxillo Facial Radiology, 38(7), 438-44. https://doi.org/10.1259/dmfr/53304677
Carvalho FB, et al. Evaluation of Periapical Changes Following Endodontic Therapy: Digital Subtraction Technique Compared With Computerized Morphometric Analysis. Dentomaxillofac Radiol. 2009;38(7):438-44. PubMed PMID: 19767513.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of periapical changes following endodontic therapy: digital subtraction technique compared with computerized morphometric analysis. AU - Carvalho,F B, AU - Gonçalves,M, AU - Guerreiro-Tanomaru,J M, AU - Tanomaru-Filho,M, PY - 2009/9/22/entrez PY - 2009/9/22/pubmed PY - 2010/1/27/medline SP - 438 EP - 44 JF - Dento maxillo facial radiology JO - Dentomaxillofac Radiol VL - 38 IS - 7 N2 - OBJECTIVES: The aim of this study was to compare two methods for the evaluation of periapical lesion changes following endodontic therapy (digital subtraction technique and morphometric analysis) by outlining the radiolucent area. METHODS: 13 human anterior teeth with pulp necrosis and chronic periapical lesions were used. Periapical radiographs were taken immediately after endodontic therapy (0) and then 2 months, 4 months and 6 months post treatment, using an intraoral radiographic film holder stabilized with impression material. The films were processed in a standard manner and the digitized images were submitted to digital subtraction using Adobe Photoshop 6.0. New bone formation or bone resorption areas were then measured. In the morphometric analysis, the periapical lesions were outlined using VixWin 2000 and the area (in square millimetres) was recorded. The obtained data were submitted to agreement analysis for comparison of the two techniques. RESULTS: There was no correlation between the areas of radiographic changes detected by digital subtraction and periapical lesion outline (r = 0.02-0.45). The new bone formation areas observed by digital subtraction presented higher values, with bone changes being especially evident in the 2 month follow-up radiographs, which suggests a higher sensitivity for this method. CONCLUSIONS: Both methods are suitable for the evaluation of periapical lesion changes, but the digital subtraction technique is more sensitive for detecting radiographic periapical changes. SN - 0250-832X UR - https://www.unboundmedicine.com/medline/citation/19767513/Evaluation_of_periapical_changes_following_endodontic_therapy:_digital_subtraction_technique_compared_with_computerized_morphometric_analysis_ L2 - https://www.birpublications.org/doi/10.1259/dmfr/53304677?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -