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Showing 3 results for Root Canal Morphology
Evaluation of root canal morphology of human mandibular incisors in Yazd
M. Tabrizi-Zadeh , K. Farazi ,
Volume 16, Issue 1 (4-2003)
Abstract

Statement of Problem: The main objective of endodontic therapy is chemomechanical cleansing of entire pulp cavity and its complete obturation with an inert material. During this procedure, the failure of detection and inadequate cleaning of a canal will result in failed endodontic therapy. Therefore, the dentist must have enough knowledge of root canal morphology to treat a tooth successfully.
Aim: The aim of this study was to determine the number and type of root canals of mandibular incisor teeth.
Materials and Methods: In order to do this in-vitro, descriptive study, 68 non-carious mandibular incisor teethj collected from different clinics in Yazd, were immersed in indian ink, decalcified and cleared.

Results: It was found that 55.9% of the teeth had two separate canals that in 5.5% of them, the canals merged before' apical foramen. In 4.4% of these samples, two separate canals existed along the whole root.
Conclusion: Considering high percentage of two canals in lower mandibular incisors, during access preparation, more attempts in detection of the second canal, is emphasized.


An in vitro study on root canal anatomy in maxillary permanent molars using clearing technique
Mohammad Mahdi Yaghooti Khorasani, Esmaiil Shah-Hosseinloo,
Volume 37, Issue 0 (3-2024)
Abstract
Background and Aims: To be successful in root canal therapy, the dentists must be aware of the possible variation in the root canal and should know not only the natural anatomy of the pulp, but also a variety of possible morphologies. Frst of all, the dentists should be familiar with the possible anatomy of the root canal and then with the extraction of organic tissue from pulp chamber and root canal, increasing the chances of treatment success. Therefore, in this study, we decided to investigate the internal anatomy of root canals in the maxillary permanent molar teeth in Khoy city.
Materials and Methods: In this in vitro study, 100 extracted human molars in Khoy city in West Azerbaijan province were collected. In all teeth, the access cavities were prepared, then they were decalcified and colored with India ink and evaluated by clearing technique. Data were collected based on Vertucci's classification which entered into SPSS23 software. The descriptive statistics in the form of numbers and percentages in tables and graphs were used to analyze the data.
Results: The most common type observed in the mesiobuccal root of the first molars was type IV by 44%, in distobuccal root was type I by 92%, and in palatal root was type I by 94%. Also, in the mesiobuccal root of the second molars, the most common type was type I by 70%, in distobuccal root was type I by 94%, and in palatal root was type I by 96%.
Conclusion: The mesiobuccal root of the first molar had the most variation in the internal anatomy. Also, the most common type of Vertucci in the mesiobuccal root of first molar was type IV and in the other roots of the first and second molar teeth was type I.

Investigation of the prevalence of missed MB2 canals in root canal-treated maxillary first molars using CBCT in patients referred to Borujerd dental school (2014-2018) 
Marjan Babadi Borujeni, Parisa Ilkhanizadeh, Hiva Ebrahimi,
Volume 39, Issue 0 (3-2026)
Abstract
Background and Aims: Identification of the second mesiobuccal canal (MB2) in maxillary first molars is considered one of the major challenges in endodontic treatment. This study aimed to investigate the prevalence of missed MB2 canals using cone-beam computed tomography (CBCT).
Materials and Methods: This descriptive-analytical retrospective study was conducted on CBCT images taken in years between 2014 and 2018. The images were selected from patients who had undergone treatment on the maxillary first molars and had visited the radiology department of Borujerd dental school. Inclusion criteria were adequate image quality and presence of root canal treatment, while exclusion criteria included incomplete images and teeth lacking complete treatment. Image analysis was performed by an oral radiology specialist. Sample size was calculated using a statistical formula considering confidence level and study power. Data analysis was performed using descriptive statistics and Spearman’s correlation test in SPSS (version 18) at a significance level of P<0.05.
Results: Out of 90 patients examined, 59 cases (65.5%) had an MB2 canal, of which 56 cases (62.2%) had not been identified during initial treatment. The prevalence of MB2 canals was significantly higher in males than in females (P<0.01). No statistically significant association was found between the presence of periapical radiolucency and MB2 canals. In most cases, the MB2 canal orifice appeared as a separate opening.
Conclusion: The results of this study indicated a high prevalence of missed MB2 canals during initial endodontic treatment. The use of CBCT can play an effective role in detecting these canals and improving the success rate of endodontic therapy. Considering individual characteristics such as gender may aid in more accurate diagnosis.
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