TY  - JOUR
AU  - Plotino, Gianluca
AU  - Costanzo, Alberto
AU  - Grande, Nicola M.
AU  - Petrović, Renata
AU  - Testarelli, Luca
AU  - Gambarini, Gianluca
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1753
AB  - Introduction: The purpose of this study was to evaluate the effect of autoclave sterilization on cyclic fatigue resistance of rotary endodontic instruments made of traditional and new nickel-titanium (NiTi) alloys. Methods: Four NiTi rotary endodontic instruments of the same size (tip diameter 0.40 mm and constant .04 taper) were selected: K3, Mtwo, Vortex, and K3 XF prototypes. Each group was then divided into 2 subgroups, unsterilized instruments and sterilized instruments. The sterilized instruments were subjected to 10 cycles of autoclave sterilization. Twelve files from each different subgroup were tested for cyclic fatigue resistance. Means and standard deviations of number of cycles to failure (NCF) and fragment length of the fractured tip were calculated for each group, and data were statistically analyzed (P  lt  .05). Results: Comparing the results between unsterilized and sterilized instruments for each type of file, differences were statistically significant (P  lt  .05) only between sterilized and unsterilized K3XF files (762 versus 651 NCF). The other instruments did not show significant differences (P > .05) in the mean NCF as a result of sterilization cycles (K3, 424 versus 439 NCF; Mtwo, 409 versus 419 NCF; Vortex, 454 versus 480 NCF). Comparing the results among the different groups, K3 XF (either sterilized or not) showed a mean NCF significantly higher than all other files(P  lt  .05). Conclusions: Repeated cycles of autoclave sterilization do not seem to influence the mechanical properties of NiTi endodontic instruments except for the K3 XF prototypes of rotary instruments that demonstrated a significant increase of cyclic fatigue resistance. (J Endod 2012;38:222-225)
PB  - Elsevier Science Inc, New York
T2  - Journal of Endodontics
T1  - Experimental Evaluation on the Influence of Autoclave Sterilization on the Cyclic Fatigue of New Nickel-Titanium Rotary Instruments
VL  - 38
IS  - 2
SP  - 222
EP  - 225
DO  - 10.1016/j.joen.2011.10.017
ER  - 

@article{
author = "Plotino, Gianluca and Costanzo, Alberto and Grande, Nicola M. and Petrović, Renata and Testarelli, Luca and Gambarini, Gianluca",
year = "2012",
abstract = "Introduction: The purpose of this study was to evaluate the effect of autoclave sterilization on cyclic fatigue resistance of rotary endodontic instruments made of traditional and new nickel-titanium (NiTi) alloys. Methods: Four NiTi rotary endodontic instruments of the same size (tip diameter 0.40 mm and constant .04 taper) were selected: K3, Mtwo, Vortex, and K3 XF prototypes. Each group was then divided into 2 subgroups, unsterilized instruments and sterilized instruments. The sterilized instruments were subjected to 10 cycles of autoclave sterilization. Twelve files from each different subgroup were tested for cyclic fatigue resistance. Means and standard deviations of number of cycles to failure (NCF) and fragment length of the fractured tip were calculated for each group, and data were statistically analyzed (P  lt  .05). Results: Comparing the results between unsterilized and sterilized instruments for each type of file, differences were statistically significant (P  lt  .05) only between sterilized and unsterilized K3XF files (762 versus 651 NCF). The other instruments did not show significant differences (P > .05) in the mean NCF as a result of sterilization cycles (K3, 424 versus 439 NCF; Mtwo, 409 versus 419 NCF; Vortex, 454 versus 480 NCF). Comparing the results among the different groups, K3 XF (either sterilized or not) showed a mean NCF significantly higher than all other files(P  lt  .05). Conclusions: Repeated cycles of autoclave sterilization do not seem to influence the mechanical properties of NiTi endodontic instruments except for the K3 XF prototypes of rotary instruments that demonstrated a significant increase of cyclic fatigue resistance. (J Endod 2012;38:222-225)",
publisher = "Elsevier Science Inc, New York",
journal = "Journal of Endodontics",
title = "Experimental Evaluation on the Influence of Autoclave Sterilization on the Cyclic Fatigue of New Nickel-Titanium Rotary Instruments",
volume = "38",
number = "2",
pages = "222-225",
doi = "10.1016/j.joen.2011.10.017"
}

Plotino, G., Costanzo, A., Grande, N. M., Petrović, R., Testarelli, L.,& Gambarini, G.. (2012). Experimental Evaluation on the Influence of Autoclave Sterilization on the Cyclic Fatigue of New Nickel-Titanium Rotary Instruments. in Journal of Endodontics
Elsevier Science Inc, New York., 38(2), 222-225.
https://doi.org/10.1016/j.joen.2011.10.017

Plotino G, Costanzo A, Grande NM, Petrović R, Testarelli L, Gambarini G. Experimental Evaluation on the Influence of Autoclave Sterilization on the Cyclic Fatigue of New Nickel-Titanium Rotary Instruments. in Journal of Endodontics. 2012;38(2):222-225.
doi:10.1016/j.joen.2011.10.017 .

Plotino, Gianluca, Costanzo, Alberto, Grande, Nicola M., Petrović, Renata, Testarelli, Luca, Gambarini, Gianluca, "Experimental Evaluation on the Influence of Autoclave Sterilization on the Cyclic Fatigue of New Nickel-Titanium Rotary Instruments" in Journal of Endodontics, 38, no. 2 (2012):222-225,
https://doi.org/10.1016/j.joen.2011.10.017 . .

TY  - JOUR
AU  - Plotino, Gianluca
AU  - Grande, Nicola M.
AU  - Mazza, Ciro
AU  - Petrović, Renata
AU  - Testarelli, Luca
AU  - Gambarini, Gianluca
PY  - 2010
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1552
AB  - Objective. The aim of this study was to investigate the influence of the shape of 3 different artificial canals on the trajectory followed by different nickel-titanium rotary instruments. Study design. Ten ProFile and Mtwo instruments, tip sizes 20 and 25, taper .06, were tested in 3 simulated root canals with an angle of curvature of 60 and radius of curvature of 5 mm but with different shapes. Geometric analysis of the trajectory that each instrument followed inside the 3 different artificial canals was performed on digital images, determining 3 parameters: angle and radius of the curvature and the position of the center of the curvature. Mean values were then calculated for each instrument size in all of the artificial canals. Data were analysed using 1-way analysis of variance, Holm t test, and Student t test to determine any statistical difference (P  lt  .05). Results. In all instrument sizes, a statistically significant difference was noted among the artificial canals for the radius and angle of curvature. No statistically significant difference was noted between instruments of the same size for the radius and angle of curvature and the position of the center of the curve when measured in the canal constructed on the dimension of the instruments. Conclusions. Different instruments follow different trajectories in artificial canals constructed with the same parameters of curvature but different shapes, depending on their different bending properties. All of the instruments respected the established parameters of curvature only when the artificial canal is designed on the dimension of the instruments. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010;109:e60-e66)
PB  - Mosby-Elsevier, New York
T2  - Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology
T1  - Influence of size and taper of artificial canals on the trajectory of NiTi rotary instruments in cyclic fatigue studies
VL  - 109
IS  - 1
SP  - E60
EP  - E66
DO  - 10.1016/j.tripleo.2009.08.009
ER  - 

@article{
author = "Plotino, Gianluca and Grande, Nicola M. and Mazza, Ciro and Petrović, Renata and Testarelli, Luca and Gambarini, Gianluca",
year = "2010",
abstract = "Objective. The aim of this study was to investigate the influence of the shape of 3 different artificial canals on the trajectory followed by different nickel-titanium rotary instruments. Study design. Ten ProFile and Mtwo instruments, tip sizes 20 and 25, taper .06, were tested in 3 simulated root canals with an angle of curvature of 60 and radius of curvature of 5 mm but with different shapes. Geometric analysis of the trajectory that each instrument followed inside the 3 different artificial canals was performed on digital images, determining 3 parameters: angle and radius of the curvature and the position of the center of the curvature. Mean values were then calculated for each instrument size in all of the artificial canals. Data were analysed using 1-way analysis of variance, Holm t test, and Student t test to determine any statistical difference (P  lt  .05). Results. In all instrument sizes, a statistically significant difference was noted among the artificial canals for the radius and angle of curvature. No statistically significant difference was noted between instruments of the same size for the radius and angle of curvature and the position of the center of the curve when measured in the canal constructed on the dimension of the instruments. Conclusions. Different instruments follow different trajectories in artificial canals constructed with the same parameters of curvature but different shapes, depending on their different bending properties. All of the instruments respected the established parameters of curvature only when the artificial canal is designed on the dimension of the instruments. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010;109:e60-e66)",
publisher = "Mosby-Elsevier, New York",
journal = "Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology",
title = "Influence of size and taper of artificial canals on the trajectory of NiTi rotary instruments in cyclic fatigue studies",
volume = "109",
number = "1",
pages = "E60-E66",
doi = "10.1016/j.tripleo.2009.08.009"
}

Plotino, G., Grande, N. M., Mazza, C., Petrović, R., Testarelli, L.,& Gambarini, G.. (2010). Influence of size and taper of artificial canals on the trajectory of NiTi rotary instruments in cyclic fatigue studies. in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology
Mosby-Elsevier, New York., 109(1), E60-E66.
https://doi.org/10.1016/j.tripleo.2009.08.009

Plotino G, Grande NM, Mazza C, Petrović R, Testarelli L, Gambarini G. Influence of size and taper of artificial canals on the trajectory of NiTi rotary instruments in cyclic fatigue studies. in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology. 2010;109(1):E60-E66.
doi:10.1016/j.tripleo.2009.08.009 .

Plotino, Gianluca, Grande, Nicola M., Mazza, Ciro, Petrović, Renata, Testarelli, Luca, Gambarini, Gianluca, "Influence of size and taper of artificial canals on the trajectory of NiTi rotary instruments in cyclic fatigue studies" in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology, 109, no. 1 (2010):E60-E66,
https://doi.org/10.1016/j.tripleo.2009.08.009 . .