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- Comparative evaluation of tip diameter of different gutta-percha cones according to ISO 6877 measurement method and direct measurement method: an in vitro study
- Rémy Balthazard, Renaud Giess, Loïs Martrette, Jean-Marc Martrette, Marin Vincent, Éric Mortier
- J Korean Acad Conserv Dent ;Published online September 17, 2026
- DOI: https://doi.org/10.5395/rde.2026.51.e42 [Epub ahead of print]
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Abstract
PDF - Objectives
Accurate fitting of the gutta-percha master cone is essential to ensure apical sealing and the success of endodontic treatment. The purpose of this study was to analyze the dimensional variability of gutta-percha cones by assessing the conformity of their apical tip diameter to manufacturer-specified values, and to compare tip diameter (D0) determination according to ISO 6877 with a direct measurement method. Methods: Ten size 25/.06 and ten size 30/.04 gutta-percha cones from ten commercial brands were evaluated. The apical tip diameter was determined according to the ISO 6877 measurement protocol and compared with a direct measurement obtained using a profilometer. Results: A substantial number of gutta-percha cones exhibited apical tip diameters that did not correspond to manufacturer-declared values. ISO 6877-based determination of D0 yielded heterogeneous results, likely due to morphological irregularities and taper variations. In contrast, direct measurement provided more homogeneous values that were generally closer to the nominal diameter. Cones manufactured using an injection molding process demonstrated the highest dimensional consistency. Conclusions: These findings highlight the need to revise the dimensional tolerances defined by ISO standard 6877. The adoption of more precise manufacturing and quality-control processes, together with the use of direct measurement as a complementary assessment tool, may improve the reliability of the nominal dimensions of gutta-percha cones.
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- 28 Download
- A comparison of dimensional standard of several nickel-titanium rotary files
- Ki-Won Kim, Kyung-Mo Cho, Se-Hee Park, Ki-Yeol Choi, Bekir Karabucak, Jin-Woo Kim
- Restor Dent Endod 2014;39(1):7-11. Published online January 20, 2014
- DOI: https://doi.org/10.5395/rde.2014.39.1.7
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Abstract
PDF
Objectives The aim of this study was to compare the dimensional standard of several nickel-titanium (Ni-Ti) rotary files and verify the size conformity.
Materials and Methods ProFile (Dentsply Maillefer), RaCe (FKG Dentaire), and TF file (SybronEndo) #25 with a 0.04 and 0.06 taper were investigated, with 10 in each group for a total of 60 files. Digital images of Ni-Ti files were captured under light microscope (SZX16, Olympus) at 32×. Taper and diameter at D1 to D16 of each files were calculated digitally with AnalySIS TS Materials (OLYMPUS Soft Imaging Solutions). Differences in taper, the diameter of each level (D1 to D16) at 1 mm interval from (ANSI/ADA) specification No. 101 were statistically analyzed using one-way ANOVA and Scheffe's
post-hoc test at 95% confidence level.Results TF was the only group not conform to the nominal taper in both tapers (
p < 0.05). All groups except 0.06 taper ProFile showed significant difference from the nominal diameter (p < 0.05).Conclusions Actual size of Ni-Ti file, especially TF, was different from the manufacturer's statements.
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Citations
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- Reciproc Blue ve T-Endo Must Sistemlerinin Eğelerinin ve Güta-Perka Konlarının Taramalı Elektron Mikroskobuyla İncelenmesi: İn Vitro Bir Çalışma
Savaş Özmen, Mevlüt Sinan Ocak
Acta Odontologica Turcica.2026; 43(2): 89. CrossRef - Dimensional and cross-sectional compatibility of contemporary nickel–titanium files and their corresponding gutta-percha cones: A micro-computed tomography study
Cem Sarkan, Faruk Haznedaroglu, Ali Keleş
The Saudi Dental Journal.2026;[Epub] CrossRef - Ex Vivo Evaluation of the Fit of Matched Gutta Percha Points in Human Root Canals Prepared With the Corresponding Nickel‐Titanium Files
Samuel Deng, Paul V. Abbott
Australian Endodontic Journal.2025; 51(3): 684. CrossRef - Diameter and Taper Variability of Single-file Instrumentation Systems and Their Corresponding Gutta-percha Cones
Franziska Haupt, Miriam Seidel, Marta Rizk, Hans-Georg Sydow, Annette Wiegand, Tina Rödig
Journal of Endodontics.2018; 44(9): 1436. CrossRef
- Reciproc Blue ve T-Endo Must Sistemlerinin Eğelerinin ve Güta-Perka Konlarının Taramalı Elektron Mikroskobuyla İncelenmesi: İn Vitro Bir Çalışma
- 2,866 View
- 16 Download
- 4 Crossref
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