Evaluating Two Techniques on Removal of Fractured Rotary Nickel-Titanium Endodontic Instruments from Root Canals: An In Vitro Study

Alomairy, Khalid H.

doi:10.1016/j.joen.2008.12.019

Cited by 48 publications

(68 citation statements)

References 31 publications

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“…However, the prognosis is lower when a fractured instrument compromises the effective disinfection of a root canal associated with periapical pathology (3)(4)(5). Therefore, the management of a case with a broken instrument might involve an orthograde or a surgical approach (6). The 3 orthograde approaches are to attempt to remove the instrument, to attempt to bypass the instrument, and to prepare and fill to the fractured fragment (7).…”

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confidence: 99%

“…The mechanical retrieval of fractured instruments from root canals has been largely reported in the literature, and many devices and methods have been proposed to accomplish that (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). However, those methods present some limitations related to canal morphology, reduction of root strength, and operator ability (6,7,16,19,(21)(22)(23)(24)(25)(26)(27). Consequently, a less complex retrieval method that causes minimum damage to the dental structures is necessary.…”

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confidence: 99%

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An Initial Investigation of the Electrochemical Dissolution of Fragments of Nickel-Titanium Endodontic Files

Ormiga

Gomes

Araújo

et al. 2011

Journal of Endodontics

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Introduction: A recent study presented the concept of an electrochemical-induced dissolution technique of fractured instruments. The purpose of this study was to test the ability to dissolve embedded fragments of K3 nickel-titanium (NiTi) files. The surface of the fragment exposed to the electrolytic solution was the main parameter evaluated as an interfering factor on the dissolution process. Methods: Three types of K3 NiTi 30.06 file fragments were produced, resulting in different exposed cross-section areas. Anodic current was recorded and used as a reference to evaluate the dissolution process of the fragments. Analysis of variance (P < .05) was used to compare the total electrical charge obtained from current versus time records among the fragments of the 3 groups. Radiographic analysis was carried out before and after the tests to observe the extension of dissolution achieved. Results: The total electrical charge values generated during the tests evidence a statistical difference among the 3 groups of fragments (analysis of variance, P < .05). The larger is the diameter of the exposed surface cross section, the higher is the total value of electrical charge. The radiographic images obtained before and after the tests showed a significant reduction of the fragment length as a result of the polarization imposed. Conclusions: The results presented here showed that it is possible to obtain a significant dissolution of K3 NiTi endodontic instrument fragments. The diameter of the surface of fragment exposed to the medium affects the current levels used to promote the dissolution. (J Endod 2011;37:526-530)

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mentioning

confidence: 99%

An Initial Investigation of the Electrochemical Dissolution of Fragments of Nickel-Titanium Endodontic Files

Ormiga

Gomes

Araújo

et al. 2011

Journal of Endodontics

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“…6 Meskipun efektif, cara ini memerlukan waktu lama dan keahlian dari dokter gigi, serta cukup banyak mengambil dentin radikuler. 7 Pada laporan kasus ini, lentulo yang patah dapat diambil menggunakan jarum Miller yang dihubungkan dengan tip ultrasonik endo dikombinasi dengan penggunaan Hedstroem file no 25. Penggunaan tip ultrasonik secara tunggal tidak mampu mengeluarkan lentulo yang patah.…”

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Pengambilan Lentulo Patah Pada Perawatan Saluran Akar Gigi Molar Satu Kiri Bawah Nekrosis Pulpa

Syafri

Nugraheni

2013

Majalah Kedokteran Gigi Indonesia

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ABSTRAKSelama prosedur preparasi saluran akar, kemungkinan patahnya instrumen selalu ada. Saat ini instrumen yang patah dapat dikeluarkan dengan menggunakan alat ultrasonik seperti jarum Miller yang dihubungkan dengan tip ultrasonik endo, selain itu diperlukan juga akses dan visibilitas yang baik sehingga memudahkan operator untuk mengeluarkan instrumen yang patah tersebut. Tujuan laporan kasus ini adalah untuk melaporkan keberhasilan pengambilan lentulo patah di dalam saluran akar menggunakan jarum miller yang dihubungkan dengan tip ultrasonik endo dikombinasikan dengan hedstroem no 25. Dalam makalah ini dilaporkan satu kasus perawatan saluran akar gigi molar satu kiri bawah pulpitis irreversibel pada pasien wanita 20 tahun, namun terjadi patah lentulo saat pengaplikasian bahan sterilisasi saluran akar. Pengambilan lentulo berhasil dilakukan pada kunjungan kedua dengan menggunakan jarum miller yang dihubungkan dengan tip ultrasonik endo serta hedstroem file no 25. Visibilitas didapatkan dengan melakukan coronal flaring menggunakan heroshaper dari mikro mega yang dihubungkan dengan alat rotary. Setelah 1 minggu, gigi diobturasi dengan teknik single cone pada saluran akar distal dan teknik kondensasi lateral pada saluran akar mesiobukal dan mesiolingual. Pada kunjungan berikutnya, gigi direstorasi dengan resin komposit disertai pasak dentatus screw. Setelah 2 bulan diamati secara radiografis dan klinis, tidak ada keluhan dari pasien. ABSTRACT: Broken Lentulo Removal During Root Canal Treatment On The First Molar Mandible Sinistra With Pulp Necrosis. During root canal preparation procedure, there is always potential for instrument breakage. Nowadays, broken instruments can be removed using ultrasonic instruments such as a needle miller connected to endo ultrasonic tip, but it needs good access and visibility in order to make it easier for the operator to remove the broken instruments. The aim of this case report is to present the successful removal of a broken lentulo left in a root canal by using smooth broach connected to a ultrasonic endo tip combined

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“…The clinician needs to balance between the advantages and disadvantages of retrieval of separated files because this could lead to the excessive removal of root dentin, which caused reduced root strength by 30% to 40% and predisposed the teeth to vertical root fracture (Alomairy, 2009). The overall success rate was found 93.3% with ultrasonics techniques and 66.6% when only conventional methods were used in curved canals (Gencoglu & Helvacioglu, 2009).…”

Section: Introductionmentioning

confidence: 99%

Retrieval of Fractured Files Based on Electrochemical Dissolution

Dufeu¹,

Peña-Farfal²,

Muñoz³

2013

Int. J. Odontostomat.

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ABSTRACT:The purpose of this study was to investigate whether the Electrochemical Dissolution (DE) facilitates the retrieval of fractured files, from Endo-Training block with an artificial root canal, by using ultrasonic techniques (US). Twenty Endo-Training block with an artificial single canal with working length 16 mm and twenty nickel-titanium (NiTi) Protaper Universal rotary files were used. 10 Shaping S1 files and 10 Shaping S2 files, were sectioned transversally within the conduit, to 5mm of the apical tip. Twenty samples were divided into four groups: Group1 and 3 received the action of DE and US, and groups 2 and 4 received the action of US. To remove the fragments we used Staging Platform and Dental Microscope. Outcome was analyzed statistically by Student t test. Statistical Analysis showed a significant difference in retrieval time of the fragments and weight loss mass of Endo training block ultrasonic tips were used, between groups that applied Ultrasonic with electrochemical dissolution and the group using only ultrasonic. It can be concluded that there was weight loss mass of separated fragment by electrochemical action, however, it was not sufficient and its use alone was inconclusive to retrieve the fragments. The procedure needs to be complemented with the use of the staging platform, ultrasonic tips and Dental Microscope.

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Evaluating Two Techniques on Removal of Fractured Rotary Nickel-Titanium Endodontic Instruments from Root Canals: An In Vitro Study

Cited by 48 publications

References 31 publications

An Initial Investigation of the Electrochemical Dissolution of Fragments of Nickel-Titanium Endodontic Files

An Initial Investigation of the Electrochemical Dissolution of Fragments of Nickel-Titanium Endodontic Files

Pengambilan Lentulo Patah Pada Perawatan Saluran Akar Gigi Molar Satu Kiri Bawah Nekrosis Pulpa

Retrieval of Fractured Files Based on Electrochemical Dissolution

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