Edorium Journal of

Dentistry

 
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Original Article
 
Root thickness evaluation of mandibular incisors
Nahid Mohammadzadeh Akhlaghi1, Bahareh Dadresanfar2, Pooneh Mohebbi2, Mehdi Vatanpour2, Shabnam Sohanian3
1Associate Professor, Endodontic Department, member of cranio-maxillo-facial Research center, Dental Branch, Islamic Azad University, Tehran, Iran.
2Assisstant Professor, Endodontic Department, Dental Branch, Islamic Azad University, Tehran, Iran.
3Post-graduate Student, Oral and Maxillofacial Pathology Department, Babol, Mazandaran, Iran.

Article ID: 100012D01NA2015
doi:10.5348/D01-2015-12-OA-10

Address correspondence to:
Pooneh Mohebbi
No. 4, 10th Neyestan, Pasdaran Ave.
Tehran
Iran, P.O. Box: 19585/175
Phone: +98 21 22598224
Fax: +98-21-22564577

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How to cite this article
Akhlaghi NM, Dadresanfar B, Mohebbi P, Vatanpour M, Sohanian S. Root thickness evaluation of mandibular incisors. Edorium J Dent 2015;2:56–60.


Abstract
Aims: Mandibular incisors are the smallest teeth in the mouth. They have thin roots with concavities and are very important for aesthetic and also for speaking. Due to their narrow internal anatomy, preparing the root canal and post space might be very difficult and endangers them for root wall perforation or fracture. The aim of this study was to measure the root thickness of mandibular incisors.
Methods: Root wall thicknesses of eighty mandibular incisors were measured in four sections including the CEJ, 3 mm apical to the CEJ, 4 mm and one mm coronal to the apex and in buccal, lingual and proximal surfaces of concavity areas, using a stereomicroscope. Data were statistically analyzed by repeated measured ANOVA and paired t-test.
Results: Buccal surface of the buccal canals and lingual surface of the lingual canals in double-canalled incisors had the greatest root thicknesses compare to the proximal surfaces. Root thickness of single-canalled root was more than of double-canalled ones. Proximal walls had the least root thicknesses in all the sections especially in section 4, at 1 mm from the apex, which was less than 1 mm.
Conclusion: In order to avoid technical mishaps during root canal procedures, attention must be paid to the thin concavity proximal walls using anticurvature flaring and also in selection of proper size of master apical file.

Keywords: Mandibular incisors, Root, Teeth, Thickness


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Author Contributions:
Nahid Mohammadzadeh Akhlaghi – Substantial contributions to conception and design, Acquisition of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Bahareh Dadresanfar – Substantial contributions to conception and design, Acquisition of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Pooneh Mohebbi – Substantial contributions to conception and design, Acquisition of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Mehdi Vatanpour – Substantial contributions to conception and design, Acquisition of data, Drafting the article, revising it critically for important intellectual content, Final approval of the version to be published
Shabnam Sohanian – Substantial contributions to conception and design, Acquisition of data, Drafting the article, Revising it critically for important intellectual content, Final approval of the version to be published
Guarantor of submission
The corresponding author is the guarantor of submission.
Source of support
None
Conflict of interest
Authors declare no conflict of interest.
Copyright
© 2015 Nahid Mohammadzadeh Akhlaghi et al. This article is distributed under the terms of Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium provided the original author(s) and original publisher are properly credited. Please see the copyright policy on the journal website for more information.



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