Evaluation of Two New Electronic Apex-Locator-Controlled Handpieces Using a NiTi Rotary File: An In Vitro Study.
The aim of this in-vitro study was to compare the accuracy of two new electronic apex-locator controlled handpieces (EALHs) using the first rotary Mtwo file while rotating in the canal.A total of 36 extracted mandibular molar teeth were selected. The lengths of the mesio-buccal canals to the major f...
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| Format: | Article |
| Language: | English |
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Tehran University of Medical Sciences
2013-12-01
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| Series: | Frontiers in Dentistry |
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| Online Access: | https://jdt.tums.ac.ir/index.php/jdt/article/view/593 |
| _version_ | 1818341749696757760 |
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| author | Kiumarz Nazarimoghadam Hossein Labaf |
| author_facet | Kiumarz Nazarimoghadam Hossein Labaf |
| author_sort | Kiumarz Nazarimoghadam |
| collection | DOAJ |
| description | The aim of this in-vitro study was to compare the accuracy of two new electronic apex-locator controlled handpieces (EALHs) using the first rotary Mtwo file while rotating in the canal.A total of 36 extracted mandibular molar teeth were selected. The lengths of the mesio-buccal canals to the major foramina were measured directly using a size 10 K-file introduced in the canal until the tip was visible under a loupe and then 0.5 mm was subtracted from the recorded lengths as the actual working lengths (AWLs). Subsequently, the teeth were randomly assigned to two groups and embedded in an alginate model. Auto-stop function of the EALHs was preset at "0.5" mark and then electrical working lengths (EWLs) in groups 1 and 2 were recorded by VDW GOLD and Dentaport ZX, respectively. Analysis of variance (ANOVA, 1-way) and Tukey pairwise multiple comparison intervals (0.05) were used to compare the accuracy of the two electronic devices.For VDW GOLD, 61.1% of the measurements were within ±0.5 mm and 88.9% were within ±1 mm of the AWL. For Dentaport ZX, 88.9% of the measurements were within ±0.5 mm and 94.4% were within ±1mm of the AWL. There was no significant difference between AWLs and EWLs (p=0.466 for Dentaport ZX and p=0.283 for VDW Gold) and between the accuracy of the two devices in determining the EWL (p=0.8).Both Dentaport ZX and VDW Gold were suitable for determining working length using a rotary file. To avoid over instrumenting the canal, we recommend setting the devices to automatically stop or reverse the rotary file at 1 mm level. |
| first_indexed | 2024-12-13T16:03:45Z |
| format | Article |
| id | doaj.art-b19bb8889039456ca53fb687e3cec90a |
| institution | Directory Open Access Journal |
| issn | 2676-296X |
| language | English |
| last_indexed | 2024-12-13T16:03:45Z |
| publishDate | 2013-12-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Frontiers in Dentistry |
| spelling | doaj.art-b19bb8889039456ca53fb687e3cec90a2022-12-21T23:39:05ZengTehran University of Medical SciencesFrontiers in Dentistry2676-296X2013-12-01106568Evaluation of Two New Electronic Apex-Locator-Controlled Handpieces Using a NiTi Rotary File: An In Vitro Study.Kiumarz Nazarimoghadam0Hossein Labaf1Associate Professor, Department of Endodontics, Dental School, Shahed University of Medical Sciences, Tehran, Iran.Assistant Professor, Department of Endodontics, Dental School, Shahed University of Medical Sciences, Tehran, Iran.The aim of this in-vitro study was to compare the accuracy of two new electronic apex-locator controlled handpieces (EALHs) using the first rotary Mtwo file while rotating in the canal.A total of 36 extracted mandibular molar teeth were selected. The lengths of the mesio-buccal canals to the major foramina were measured directly using a size 10 K-file introduced in the canal until the tip was visible under a loupe and then 0.5 mm was subtracted from the recorded lengths as the actual working lengths (AWLs). Subsequently, the teeth were randomly assigned to two groups and embedded in an alginate model. Auto-stop function of the EALHs was preset at "0.5" mark and then electrical working lengths (EWLs) in groups 1 and 2 were recorded by VDW GOLD and Dentaport ZX, respectively. Analysis of variance (ANOVA, 1-way) and Tukey pairwise multiple comparison intervals (0.05) were used to compare the accuracy of the two electronic devices.For VDW GOLD, 61.1% of the measurements were within ±0.5 mm and 88.9% were within ±1 mm of the AWL. For Dentaport ZX, 88.9% of the measurements were within ±0.5 mm and 94.4% were within ±1mm of the AWL. There was no significant difference between AWLs and EWLs (p=0.466 for Dentaport ZX and p=0.283 for VDW Gold) and between the accuracy of the two devices in determining the EWL (p=0.8).Both Dentaport ZX and VDW Gold were suitable for determining working length using a rotary file. To avoid over instrumenting the canal, we recommend setting the devices to automatically stop or reverse the rotary file at 1 mm level.https://jdt.tums.ac.ir/index.php/jdt/article/view/593AccuracyApex-Locator-Controlled HandpieceDentaportZx DeviceMtwo Rotary File SystemVDW Gold Device |
| spellingShingle | Kiumarz Nazarimoghadam Hossein Labaf Evaluation of Two New Electronic Apex-Locator-Controlled Handpieces Using a NiTi Rotary File: An In Vitro Study. Frontiers in Dentistry Accuracy Apex-Locator-Controlled Handpiece DentaportZx Device Mtwo Rotary File System VDW Gold Device |
| title | Evaluation of Two New Electronic Apex-Locator-Controlled Handpieces Using a NiTi Rotary File: An In Vitro Study. |
| title_full | Evaluation of Two New Electronic Apex-Locator-Controlled Handpieces Using a NiTi Rotary File: An In Vitro Study. |
| title_fullStr | Evaluation of Two New Electronic Apex-Locator-Controlled Handpieces Using a NiTi Rotary File: An In Vitro Study. |
| title_full_unstemmed | Evaluation of Two New Electronic Apex-Locator-Controlled Handpieces Using a NiTi Rotary File: An In Vitro Study. |
| title_short | Evaluation of Two New Electronic Apex-Locator-Controlled Handpieces Using a NiTi Rotary File: An In Vitro Study. |
| title_sort | evaluation of two new electronic apex locator controlled handpieces using a niti rotary file an in vitro study |
| topic | Accuracy Apex-Locator-Controlled Handpiece DentaportZx Device Mtwo Rotary File System VDW Gold Device |
| url | https://jdt.tums.ac.ir/index.php/jdt/article/view/593 |
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