Shaping ability of nickel-titanium rotary instruments in simulated S-shaped root canals.
| Title: | Shaping ability of nickel-titanium rotary instruments in simulated S-shaped root canals. |
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| Authors: | Madureira RG; Centro de Investigação em Ciências da Saúde, Instituto Superior de Ciências da Saúde-Norte, CESPU, Gandra, Portugal. ruimad@sapo.pt; Forner Navarro L; Llena MC; Costa M |
| Source: | Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics [Oral Surg Oral Med Oral Pathol Oral Radiol Endod] 2010 Feb; Vol. 109 (2), pp. e136-44. Date of Electronic Publication: 2009 Dec 06. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: Elsevier Country of Publication: United States NLM ID: 9508562 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1528-395X (Electronic) Linking ISSN: 10792104 NLM ISO Abbreviation: Oral Surg Oral Med Oral Pathol Oral Radiol Endod Subsets: MEDLINE |
| Imprint Name(s): | Publication: 2004- : St. Louis, MO : Elsevier; Original Publication: St. Louis, MO : Mosby-Year Book, Inc., c1995- |
| MeSH Terms: | Dental Pulp Cavity/*anatomy & histology ; Root Canal Preparation/*instrumentation ; Root Canal Preparation/*methods ; Tooth Root/*anatomy & histology; Analysis of Variance ; Dental Alloys ; Dental Instruments ; Dental Stress Analysis ; Equipment Failure ; Humans ; Models, Dental ; Nickel ; Normal Distribution ; Pliability ; Stainless Steel ; Titanium |
| Abstract: | Objective: The aim of this study was to compare the shaping ability of 4 nickel-titanium rotary techniques and 1 hand technique in simulated S-shaped curved root canals.; Study Design: Seventy-five simulated double-curved resin root canals were divided into 5 groups (n = 15). The canals were compared at 12 different levels and at 3 different times: before preparation and after preparation to master apical 25 and 35. Data were statistically analyzed by performing 2-by-2 comparisons with the Tukey parametric test of variance analysis using a confidence interval of 95%.; Results: All of the 75 resin blocks presented transportation of the root canals by transforming the apical curvature into a straight zone and straightening the first curvature. When increasing the diameter from 25 to 35, both curvatures were straightened.; Conclusions: Based on the conditions of this study, we can say that the flexibility of the instruments is inversely related with the transportation of the root canals, and that in the double-curved root canals, the apical curvature is always straightened.; (Copyright (c) 2010 Mosby, Inc. All rights reserved.) |
| Substance Nomenclature: | 0 (Dental Alloys); 12035-60-8 (titanium nickelide); 12597-68-1 (Stainless Steel); 7OV03QG267 (Nickel); D1JT611TNE (Titanium) |
| Entry Date(s): | Date Created: 20091209 Date Completed: 20100503 Latest Revision: 20211203 |
| Update Code: | 20260130 |
| DOI: | 10.1016/j.tripleo.2009.09.020 |
| PMID: | 19969482 |
| Database: | MEDLINE |
Journal Article