Journal of Conservative Dentistry

ORIGINAL ARTICLE
Year
: 2014  |  Volume : 17  |  Issue : 2  |  Page : 142--145

Computed tomography evaluation of residual root thickness after pre-flaring using gates Glidden drills: The sequence effect


Nahid M Akhlaghi, Amirali Naghdi, Laleh Mohammadian Bajgiran, Elahe Behrooz 
 Department of Endodontics, Dental Branch, Islamic Azad University, Tehran, Iran

Correspondence Address:
Nahid M Akhlaghi
No 4, 10th Neyestan, Pasdaran Avenue, Tehran 19468
Iran

Aim: The aim of the present study is to evaluate the residual root thickness in mesiolingual (ML) canals of mandibular molars after pre-flaring using different sequences of Gates-Glidden (GG) drills. Materials and Methods: Computed tomography (CT) scans of the ML canals of 60 mandibular first molars were provided from areas within 1, 2, 3 and 4 mm of the furcation area and minimum initial root thickness (MIRT) of concave areas was measured at each level. The samples were divided into two groups (G1 and G2) which were prepared by the step-back and crown-down techniques, respectively. In both groups, anti-curvature filing was used. On secondary CT images of the samples in the same position, the minimum residual root thickness (MRRT) and the amount of removed dentin were analyzed by t-test and ANOVA. Results: There was no significant difference for MIRT between the two groups. The MRRT was greater in the G2 group in all the sections, with no significant difference between them. The average of MRRT was not <0.5 mm in any of the groups or sections. Conclusion: Based on the results of this study when the appropriate root thickness is present initially, GG drills used in any sequence may be suitable, safe and cost effective for pre-flaring of mesial canals of mandibular first molars with preserving the root thickness of furcation areas.


How to cite this article:
Akhlaghi NM, Naghdi A, Bajgiran LM, Behrooz E. Computed tomography evaluation of residual root thickness after pre-flaring using gates Glidden drills: The sequence effect.J Conserv Dent 2014;17:142-145


How to cite this URL:
Akhlaghi NM, Naghdi A, Bajgiran LM, Behrooz E. Computed tomography evaluation of residual root thickness after pre-flaring using gates Glidden drills: The sequence effect. J Conserv Dent [serial online] 2014 [cited 2022 Jan 20 ];17:142-145
Available from: https://www.jcd.org.in/article.asp?issn=0972-0707;year=2014;volume=17;issue=2;spage=142;epage=145;aulast=Akhlaghi;type=0