Comparison of vibration characteristics of file systems for root canal shaping according to file length

It is well described that the presence of microbial flora in the pulp space of the tooth, and the inability of the immune system to remove these pathogens, are the major sources of peri-apical and radicular inflam-mation.1 Eradication of these pathogens from the pulp and root canal space by means of cleaning, shaping, disinfecting and complete obturation is necessary to safeguard the health of the periodontal tissues from endodontic infection and subsequent breakdown.2,3 The basic objectives of cleaning and shaping of root canals include: (1) removal of all infected soft and hard tissues; (2) creating space for delivery of disinfectants and medicaments to the apical part of the canal; (3) facilitating three dimensional obturation and (4) preservation of radicular structures.4 Even modern endodontic file systems leave untouched areas on the root canal walls after preparation and show compaction of hard tissue debris.5 This debris consists of pulp tissue remnants, bacteria and dentine chips of which most is found in the apical part of the prepared root canal system.6 Aiming for a centred preparation that corresponds to the original canal anatomy accompanied by the lowest amount of canal transportation, especially in middle and apical parts of curved canals, will result in the most favourable post instrumented canal shape. The four optimal canal shaping objectives are: (1) to have a tapered funnel from orifice to apex, (2) maintenance of original anatomical canal pathway, (3) apical foramen position should remain constant and (4) leaving the apical opening as small as possible.2,7

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Debris Evaluation after Root Canal Shaping with Rotating and Reciprocating Single-File Systems

Journal of Functional Biomaterials ◽

10.3390/jfb7040028 ◽

2016 ◽

Vol 7 (4) ◽

pp. 28 ◽

Cited By ~ 1

Author(s):

Alberto Dagna ◽

Giulia Gastaldo ◽

Riccardo Beltrami ◽

Claudio Poggio

Keyword(s):

Root Canal ◽

File Systems ◽

Single File ◽

Canal Shaping

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Evaluation of preparation times of WaveOne Gold reciprocating instruments compared to two analogous counterparts

South African Dental Journal ◽

10.17159/2519-0105/2021/v76no6a2 ◽

2021 ◽

Vol 76 (06) ◽

pp. 315-319

Author(s):

Christiaan Victor ◽

Peet J Van der Vyver ◽

Martin Vorster ◽

Farzana Paleker ◽

Zunaid I Vally

Keyword(s):

New Mexico ◽

Root Canal ◽

Ex Vivo ◽

File Systems ◽

Clinical Importance ◽

Performance Comparison ◽

Glide Path ◽

Group 2 ◽

Canal Shaping ◽

The Cost

Manufacturers are constantly developing new products to optimise endodontic treatment. These newer file systems are often associated with increasing expenditure of instrumentation and can affect the cost effectiveness of root canal treatment. Recently, companies have emerged that claim to have successfully reproduced many of the more established endodontic file systems manufactured by Dentsply Sirona (Ballaigues, Switzerland). EdgeEndo (Albuquerque, New Mexico, USA) and PacDent (Brea, CA, USA), which manufacture files similar in design to that of Dentsply Sirona, claim that they are similar and sell them at a lower price. A performance comparison of the replica file systems to their original is of clinical importance. The aim of this ex vivo study was to compare the total glide path and canal preparation times of WaveOne Gold Glider (Dentsply Sirona) combined with the Primary WaveOne Gold (Dentsply Sirona), Edge GlidePath (Edge Endo, Albuquerque, New Mexico, USA) followed by the Primary EdgeOne Fire (EdgeEndo); and One File G Glide Path (Pac-Dent, Brea, CA, USA) file combined with the Primary One File G (Pac-Dent) Shaping file. Sixty curved untreated canals of extracted, human, mandibular molars were randomly divided into three groups of 20 canals each for mechanical glide path enlargement and root canal shaping. Group 1 (WaveOne Gold Glider + Primary WaveOne Gold); Group 2 (Edge GlidePath + Primary EdgeOne Fire); and Group 3 (One File G Reciprocating Glide Path File + Primary One File G Reciprocating shaping file). The total time taken to prepare a glide path and to complete the root canal preparation of each canal was recorded (in seconds) by means of an iPhone stopwatch (Apple Inc., Cupertino, California). The time taken to change files was not recorded. Throughout the instrumentation process, RC Prep was used as a lubricant, and5 mL 3% sodium hypochlorite was used as irrigation solution. Mean and standard deviations were determined for each group, and analysis of variance was used to statistically compare the mean glide path preparation times for the three groups. The fastest final canal preparation time was achieved by WOGG/PWOG (41.78 ± 10.58 s), followed by OFGP/ POFS (42.02 ± 12.16 s) and then EGP/PEOF (42.49 ± 10.44 s). There were no statistically significant differences between the canal preparation times of the three combination groups (p>0.05).

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Impact on Quality of Life of Patients Treated by Different File Systems for Root Canal Treatment

Journal of Health and Allied Sciences NU ◽

10.1055/s-0040-1722108 ◽

2021 ◽

Author(s):

L.S. Priyanka ◽

Lakshmi Nidhi Rao ◽

Aditya Shetty ◽

Mithra N. Hegde ◽

Chitharanjan Shetty

Keyword(s):

Quality Of Life ◽

Oral Health ◽

Postoperative Pain ◽

Root Canal ◽

File Systems ◽

Study Groups ◽

Significant Difference ◽

Related Quality ◽

The Impact

Abstract Introduction The outcomes of oral health conditions and therapy for those conditions are described by the term “oral health-related quality of life.” Oral health-related quality of life is recognized by the World Health Organization as an important part of the Global Oral Health Program. The study aims to compare the impact of three root canal preparation systems on patients’ quality of life and correlate postoperative pain with the impact on the quality of life. Materials and Methods A survey was performed in which 90 patients were randomly assigned to three groups based on the root canal preparation system: (1) ProTaper Gold (Dentsply, Tulsa Dental Specialties, Tulsa, Oklahoma, United States), (2) Neoendo flex (Neoendo, India),and (3) Hyflex EDM/CM (Coltene Whaledent) that included 30 participants in each group. Data collection included the implementation of a demographic data questionnaire, Oral Health Impact Profile 14 (quality of life), and visual analogue scale(pain). The questionnaire was given after root canal treatment in the first 24 hours. The data obtained were statistically analyzed. Results No significant differences were found in the quality of life among study groups. Group 1 demonstrated a highly significant difference in the postoperative pain with p value of 2.67. Conclusion Within the limitations of the present study, Protaper Gold showed a highly significant difference in postoperative pain when compared with other file systems. No significant differences were found in the quality of life among the study groups.

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Root Canal Penetration of a Sodium Hypochlorite Mixture Using Sonic or Ultrasonic Activation

Brazilian Dental Journal ◽

10.1590/0103-6440201300209 ◽

2014 ◽

Vol 25 (6) ◽

pp. 489-493 ◽

Cited By ~ 9

Author(s):

Marta Sáinz-Pardo ◽

Roberto Estevez ◽

Óliver Valencia de Pablo ◽

Giampiero Rossi-Fedele ◽

Rafael Cisneros

Keyword(s):

Sodium Hypochlorite ◽

Root Canal ◽

Ex Vivo ◽

Positive Pressure ◽

Ultrasonic Activation ◽

Penetration Length ◽

Working Length ◽

Closed Systems ◽

Canal Shaping ◽

Ex Vivo Study

The purpose of this ex vivo study was to determine, in "open" and "closed" systems, whether the design has an influence on the penetration length of sodium hypochlorite mixed with a radiopaque contrast medium, measured in millimeters, when delivered using positive pressure (PP) and using sonic (SI) or passive ultrasonic (PUI) activation. Sixty single-rooted teeth were divided into two groups: open and closed systems (n=30). Root canal shaping was performed to a working length of 17 mm. The samples were divided into three sub-groups (n=10) according to irrigant delivery and activation: PP, and SI or PUI activation. By using radiographs, penetration length was measured, and vapor lock was assessed. For the closed group, the penetration distance means were: PP 15.715 (±0.898) mm, SI 16.299 (±0.738) mm and PUI 16.813 (±0.465) mm, with vapor lock occurring in 53.3% of the specimens. In the open group, penetration to 17 mm occurred in 97.6% of the samples, and no vapor lock occurred. Irrigant penetration and distribution evaluation using open and closed systems provide significantly different results. For closed systems, PUI is the most effective in delivering the irrigant to working length, followed by SI.

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