Angular deflection of rotary nickel titanium files: a comparative study
A new manufacturing method of twisting nickel titanium wire to produce rotary nickel titanium (RNT) files has recently been developed. The aim of the present study was to evaluate whether the new manufacturing process increased the angular deflection of RNT files, by comparing instruments produced u...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Istituto Superiore di Sanità
2009-12-01
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| Series: | Annali dell'Istituto Superiore di Sanità |
| Subjects: | |
| Online Access: | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0021-25712009000400011&lng=en&tlng=en |
| _version_ | 1811337121172029440 |
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| author | Gianluca Gambarini Luca Testarelli Valerio Milana Raffaella Pecci Rossella Bedini Giancarlo Pongione Roberto Gerosa Massimo De Luca |
| author_facet | Gianluca Gambarini Luca Testarelli Valerio Milana Raffaella Pecci Rossella Bedini Giancarlo Pongione Roberto Gerosa Massimo De Luca |
| author_sort | Gianluca Gambarini |
| collection | DOAJ |
| description | A new manufacturing method of twisting nickel titanium wire to produce rotary nickel titanium (RNT) files has recently been developed. The aim of the present study was to evaluate whether the new manufacturing process increased the angular deflection of RNT files, by comparing instruments produced using the new manufacturing method (Twisted Files) versus instruments produced with the traditional grinding process. Testing was performed on a total of 40 instruments of the following commercially available RNT files: Twisted Files (TF), Profile, K3 and M2 (NRT). All instruments tested had the same dimensions (taper 0.06 and tip size 25). Test procedures strictly followed ISO 3630-1. Data were collected and statistically analyzed by means ANOVA test. The results showed that TF demonstrated significantly higher average angular deflection levels (P<0.05), than RNT manufactured by a grinding process. Since angular deflection represent the amount of rotation (and consequently deformation) that a RNT file can withstand before torsional failure, such a significant improvement is a favorable property for the clinical use of the tested RNT files. |
| first_indexed | 2024-04-13T17:50:20Z |
| format | Article |
| id | doaj.art-1b798bb9c4e649f599f583233425840d |
| institution | Directory Open Access Journal |
| issn | 0021-2571 |
| language | English |
| last_indexed | 2024-04-13T17:50:20Z |
| publishDate | 2009-12-01 |
| publisher | Istituto Superiore di Sanità |
| record_format | Article |
| series | Annali dell'Istituto Superiore di Sanità |
| spelling | doaj.art-1b798bb9c4e649f599f583233425840d2022-12-22T02:36:44ZengIstituto Superiore di SanitàAnnali dell'Istituto Superiore di Sanità0021-25712009-12-0145442342610.1590/s0021-25712009000400011S0021-25712009000400011Angular deflection of rotary nickel titanium files: a comparative studyGianluca Gambarini0Luca Testarelli1Valerio Milana2Raffaella Pecci3Rossella Bedini4Giancarlo Pongione5Roberto Gerosa6Massimo De LucaUniversità degli Studi SapienzaUniversità degli Studi SapienzaIstituto Superiore di SanitàIstituto Superiore di SanitàIstituto Superiore di SanitàUniversità degli Studi SapienzaUniversità degli StudiA new manufacturing method of twisting nickel titanium wire to produce rotary nickel titanium (RNT) files has recently been developed. The aim of the present study was to evaluate whether the new manufacturing process increased the angular deflection of RNT files, by comparing instruments produced using the new manufacturing method (Twisted Files) versus instruments produced with the traditional grinding process. Testing was performed on a total of 40 instruments of the following commercially available RNT files: Twisted Files (TF), Profile, K3 and M2 (NRT). All instruments tested had the same dimensions (taper 0.06 and tip size 25). Test procedures strictly followed ISO 3630-1. Data were collected and statistically analyzed by means ANOVA test. The results showed that TF demonstrated significantly higher average angular deflection levels (P<0.05), than RNT manufactured by a grinding process. Since angular deflection represent the amount of rotation (and consequently deformation) that a RNT file can withstand before torsional failure, such a significant improvement is a favorable property for the clinical use of the tested RNT files.http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0021-25712009000400011&lng=en&tlng=ennickel titaniodeflessione angolareendodonzia |
| spellingShingle | Gianluca Gambarini Luca Testarelli Valerio Milana Raffaella Pecci Rossella Bedini Giancarlo Pongione Roberto Gerosa Massimo De Luca Angular deflection of rotary nickel titanium files: a comparative study Annali dell'Istituto Superiore di Sanità nickel titanio deflessione angolare endodonzia |
| title | Angular deflection of rotary nickel titanium files: a comparative study |
| title_full | Angular deflection of rotary nickel titanium files: a comparative study |
| title_fullStr | Angular deflection of rotary nickel titanium files: a comparative study |
| title_full_unstemmed | Angular deflection of rotary nickel titanium files: a comparative study |
| title_short | Angular deflection of rotary nickel titanium files: a comparative study |
| title_sort | angular deflection of rotary nickel titanium files a comparative study |
| topic | nickel titanio deflessione angolare endodonzia |
| url | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0021-25712009000400011&lng=en&tlng=en |
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