The effect of brushing motion on the cyclic fatigue of rotary nickel titanium instruments
The goal of the study is to evaluate if the use of rotary nickel-titanium (RNT) instruments, as Hedstroem files, is safe. Twelve twisted files (TF) RNT instruments size 06-25 were selected and randomly divided in 2 groups of 6 instruments each. Group A (new instruments) were used as control. Group B...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Istituto Superiore di Sanità
2010-12-01
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| Series: | Annali dell'Istituto Superiore di Sanità |
| Subjects: | |
| Online Access: | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0021-25712010000400007&lng=en&tlng=en |
| _version_ | 1828822709209923584 |
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| author | Gianluca Gambarini Eugenio Tucci Rossella Bedini Raffaella Pecci Massimo Galli Valerio Milana Massimo De Luca Luca Testarelli |
| author_facet | Gianluca Gambarini Eugenio Tucci Rossella Bedini Raffaella Pecci Massimo Galli Valerio Milana Massimo De Luca Luca Testarelli |
| author_sort | Gianluca Gambarini |
| collection | DOAJ |
| description | The goal of the study is to evaluate if the use of rotary nickel-titanium (RNT) instruments, as Hedstroem files, is safe. Twelve twisted files (TF) RNT instruments size 06-25 were selected and randomly divided in 2 groups of 6 instruments each. Group A (new instruments) were used as control. Group B (test) instruments were clinically used only as Hedstroem files in a canal that had been previously instrumented to the working length with other 06-25 RNT instruments. Group B instruments were used only in the straight portion of the canal (1 minute at 1000 rpm). A cyclic fatigue test was performed for each instrument of groups. Data were statistically analyzed (Student's t-test). Results showed no significant difference (P > 0.05) between groups A and B. Data confirmed that the use of TF instruments as Hedstroem files is a safe procedure. Cross section images and volumes of the same instrument, before and after cyclic fatigue testing, have been obtained by means of microtomographic analysis to evaluate possible microstructure alterations. |
| first_indexed | 2024-12-12T13:18:56Z |
| format | Article |
| id | doaj.art-09644b6b818141a3b4372b2cb2a2c0aa |
| institution | Directory Open Access Journal |
| issn | 0021-2571 |
| language | English |
| last_indexed | 2024-12-12T13:18:56Z |
| publishDate | 2010-12-01 |
| publisher | Istituto Superiore di Sanità |
| record_format | Article |
| series | Annali dell'Istituto Superiore di Sanità |
| spelling | doaj.art-09644b6b818141a3b4372b2cb2a2c0aa2022-12-22T00:23:20ZengIstituto Superiore di SanitàAnnali dell'Istituto Superiore di Sanità0021-25712010-12-0146440040410.4415/ANN_10_04_07S0021-25712010000400007The effect of brushing motion on the cyclic fatigue of rotary nickel titanium instrumentsGianluca Gambarini0Eugenio Tucci1Rossella Bedini2Raffaella Pecci3Massimo Galli4Valerio Milana5Massimo De Luca6Luca Testarelli7Sapienza Università di RomaSapienza Università di RomaIstituto Superiore di SanitàIstituto Superiore di SanitàSapienza Università di RomaSapienza Università di RomaSapienza Università di RomaSapienza Università di RomaThe goal of the study is to evaluate if the use of rotary nickel-titanium (RNT) instruments, as Hedstroem files, is safe. Twelve twisted files (TF) RNT instruments size 06-25 were selected and randomly divided in 2 groups of 6 instruments each. Group A (new instruments) were used as control. Group B (test) instruments were clinically used only as Hedstroem files in a canal that had been previously instrumented to the working length with other 06-25 RNT instruments. Group B instruments were used only in the straight portion of the canal (1 minute at 1000 rpm). A cyclic fatigue test was performed for each instrument of groups. Data were statistically analyzed (Student's t-test). Results showed no significant difference (P > 0.05) between groups A and B. Data confirmed that the use of TF instruments as Hedstroem files is a safe procedure. Cross section images and volumes of the same instrument, before and after cyclic fatigue testing, have been obtained by means of microtomographic analysis to evaluate possible microstructure alterations.http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0021-25712010000400007&lng=en&tlng=enstrumenti endodonticinicheltitaniofatica ciclica |
| spellingShingle | Gianluca Gambarini Eugenio Tucci Rossella Bedini Raffaella Pecci Massimo Galli Valerio Milana Massimo De Luca Luca Testarelli The effect of brushing motion on the cyclic fatigue of rotary nickel titanium instruments Annali dell'Istituto Superiore di Sanità strumenti endodontici nichel titanio fatica ciclica |
| title | The effect of brushing motion on the cyclic fatigue of rotary nickel titanium instruments |
| title_full | The effect of brushing motion on the cyclic fatigue of rotary nickel titanium instruments |
| title_fullStr | The effect of brushing motion on the cyclic fatigue of rotary nickel titanium instruments |
| title_full_unstemmed | The effect of brushing motion on the cyclic fatigue of rotary nickel titanium instruments |
| title_short | The effect of brushing motion on the cyclic fatigue of rotary nickel titanium instruments |
| title_sort | effect of brushing motion on the cyclic fatigue of rotary nickel titanium instruments |
| topic | strumenti endodontici nichel titanio fatica ciclica |
| url | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0021-25712010000400007&lng=en&tlng=en |
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