Relationship of Periapical Radiolucencies with the Quality of Root Canal Treatment: A CBCT Study on an Iranian Population

Abdollahi, Maryam; Bolbolian, Marjan; Tofangchiha, Maryam; Rasti, Pooya; Keshavarzi, Zahra; Alizadeh, Ahad; Reda, Radolfo; Testarelli, Luca

doi:10.15517/kryhrr53

Authors

Maryam Abdollahi Department of Orthodontics, Dental School, Qazvin University of Medical Sciences, Qazvin, Iran. Author https://orcid.org/0009-0008-7251-6838
Marjan Bolbolian Associate Professor, Department of Endodontics, Dental Caries Prevention Research Center, Qazvin University of Medical Sciences, Qazvin, Iran. Author https://orcid.org/0000-0002-9064-5122
Maryam Tofangchiha Professor, Department of Oral and Maxillofacial Radiology, Qazvin University of Medical Sciences, Qazvin, Iran. Author https://orcid.org/0000-0002-5515-2189
Pooya Rasti Department of Prosthodontics, Dental School, Qazvin University of Medical Sciences, Qazvin, Iran. Author https://orcid.org/0009-0000-8998-2685
Zahra Keshavarzi Department of Orthodontics, Dental School, Qazvin University of Medical Sciences, Qazvin, Iran. Author https://orcid.org/0009-0004-0987-1416
Ahad Alizadeh Assistant Professor, Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran. Author https://orcid.org/0000-0002-0385-463X
Radolfo Reda Department of Oral and Maxillofacial Science, Sapienza University of Rome, 00161, Rome, Italy. Author https://orcid.org/0000-0003-1532-6524
Luca Testarelli Department of Oral and Maxillofacial Science, Sapienza University of Rome, 00161, Rome, Italy. Author https://orcid.org/0000-0003-3904-3000

DOI:

https://doi.org/10.15517/kryhrr53

Keywords:

Cone-beam computed tomography; Root canal therapy; Periapical periodontitis; Periapical granuloma.

Abstract

This study aimed to assess the relationship of periapical (PA) radiolucencies with the quality of root canal treatment (RCT) using cone-beam computed tomography (CBCT) scans of an Iranian population. This cross-sectional study was conducted on 200 endodontically-treated teeth on CBCT scans retrieved from a radiology clinic in Qazvin, Iran. The sagittal, coronal, and axial views were evaluated by an endodontist and a trained senior dental student for root canal procedural errors and presence/absence of PA radiolucency in the respective teeth. The association of PA lesions with age, gender, jaw, tooth type, presence/absence of coronal restoration, and RCT quality was analyzed by the logistic regression model (alpha=0.05). The frequency of poor-quality RCT was 75.3% in teeth with a PA radiolucency, and 15.5% in teeth without it. A significant association was found between the quality of RCT and PA radiolucencies (P<0.001). Absence of coronal restoration also had a significant association with the presence of PA radiolucencies (P<0.001). Of the procedural errors, perforation, under- and over-obturation, low obturation density (voids), and canal transportation were significantly associated with the presence of PA radiolucencies (P<0.05). The RCT quality had a significant association with development of PA radiolucencies, such that procedural errors and absence of coronal restoration were associated with a significantly higher frequency of PA lesions.

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