Postoperative pain after nonsurgical endodontic retreatment: Hand files versus R-Endo rotary instruments

Background/Aim. Apical extrusion of material is considered as one of the very important factor for endodontic treatment success. Microorganisms, necrotic tissue, filling material and irrigants, which can be extruded apically during endodontic retreatment, may jeopardize the success of the therapy. The aim of this in vitro study was to quantitatively evaluate the amount of apically extruded debris during endodontic retreatment of teeth obturated with two different materials, using one hand and three rotary instrumentation techniques. Methods. Ninety-six extracted single-rooted teeth were endodontically treated and enlarged to size 40 using BioRaCe system, and then randomly divided into 8 groups of 12 specimens each. Half of the specimens were obturated with gutta-percha and AH Plus? sealer and another half with RealSeal SE system, using lateral condensation technique. Retreatment was performed using: Hedstr?m files; ProFile rotary files; ProTaper Retreatment system and D-RaCe system. Apically extruded debris was collected in pre-weighed Eppendorf tubes and evaluated using an electronic microbalance. Data were analyzed statistically using t-test and analysis of variance. Results. In the AH Plus/gutta-percha group, all tested rotary instruments gave significantly less extruded debris compared with Hedstr?m files (p < 0.05). In theRealSeal group, there was significant difference between DRaCe and Hedstr?m instruments (p < 0.05). Conclusion. All retreatment techniques resulted in apical extrusion. DRaCe system produced significantly less extruded debris compared to hand files. No significant difference was found when comparing two instruments specially designed for retreatment: D-RaCe and ProTaper systems.

Download Full-text

Evaluation of pain after endodontic retreatment using reciprocating files or ultrasonic inserts for the desobturation of root canals: a randomized clinical study

Research Society and Development ◽

10.33448/rsd-v10i2.12649 ◽

2021 ◽

Vol 10 (2) ◽

pp. e32210212649

Author(s):

Rafael Marassi ◽

Ana Grasiela da Silva Limoeiro ◽

Rina Andrea Pelegrine ◽

Carlos Eduardo da Silveira Bueno ◽

Augusto Shoji Kato ◽

...

Keyword(s):

Postoperative Pain ◽

Pain Intensity ◽

Significance Level ◽

Exact Test ◽

Root Canals ◽

Randomized Clinical Study ◽

Ordinal Logistic Regression Analysis ◽

Friedman's Test ◽

Pain Duration ◽

Endodontic Retreatment

This randomized clinical trial aimed to evaluate the endodontic retreatment techniques influence using reciprocating files and ultrasonic inserts in relation to the incidence, intensity, and postoperative pain duration. Forty-six patients were randomly assigned into two groups: Reciprocant files (RC group); or the Clearsonic Ultrasonic Insert (CL group;). Participants were asked to report the incidence, duration, and postoperative pain intensity using a visual analog scale (VAS) at 24, 48 and 72 h after retreatment. Fisher’s exact test was used to compare the two methods used regarding postoperative pain. The Mann-Whitney test was used to compare pain intensity, and Friedman’s test was used to assess the time effect on pain intensity. Finally, ordinal logistic regression analysis was used to assess the odds ratio for pain occurrence at a significance level of 5%. The postoperative pain incidence was significantly lower in the CL group in all experimental periods. Comparing the two techniques, pain intensity was significantly lower in the CL group after 24 and 48 h. For the RC group, pain intensity was significantly greater at 24 h compared with the other periods. The technique used in endodontic retreatment can influence postoperative pain.

Download Full-text

Removal of Gutta-Percha from the Root Canals using Three Different Rotary Files

Dental Journal of Advance Studies ◽

10.1055/s-0038-1671972 ◽

2013 ◽

Vol 01 (03) ◽

pp. 159-162

Author(s):

Harleen Gill ◽

Ajay Chhabra ◽

Varun Jindal ◽

Ankur Vats ◽

Gurkirat Grewal

Keyword(s):

Root Canal ◽

Root Canal Treatment ◽

Canal System ◽

Root Canals ◽

Gutta Percha ◽

Rotary Instruments ◽

Debris Removal ◽

Ah Plus ◽

Root Canal System ◽

Endodontic Retreatment

AbstractIn case of failed root canal treatment endodontic retreatment of the root canal system is necessary. The aim of the present study was to compare the gutta-percha removal with Protaper retreatment files (Dentsply Maillefer, Ballaigues, Switzerland), K3 (SybronEndo) and Hero Shapers (MicroMega, Besancon, France). Method: Thirty freshly extracted human single rooted teeth were prepared with ProTaper rotary instruments up to file F3 andfilled with 30 # GP cones and AH plus sealer. The teeth were then stored for 1 week. The teeth were divide into 3 retreatment groups (n=10). The gutta-percha was removed using Protaper retreatment files, K3 and Hero Shapers. Teeth were then evaluated using radiographs. Results: Comparing the ratio between clean canals Protaper and K3 showed better debris removal as compared to Hero shaper. But no significance difference was found.

Download Full-text

Effectiveness of ProFile .04 Taper Rotary Instruments in Endodontic Retreatment

Journal of Endodontics ◽

10.1097/00004770-200002000-00010 ◽

2000 ◽

Vol 26 (2) ◽

pp. 100-104 ◽

Cited By ~ 70

Author(s):

V SAELIM ◽

I DORAJAMANICKAM ◽

B LIM ◽

H LEE

Keyword(s):

Rotary Instruments ◽

Endodontic Retreatment

Download Full-text

Postoperative Pain after Endodontic Retreatment Using Rotary or Reciprocating Instruments: A Randomized Clinical Trial

Journal of Endodontics ◽

10.1016/j.joen.2017.02.010 ◽

2017 ◽

Vol 43 (7) ◽

pp. 1084-1088 ◽

Cited By ~ 18

Author(s):

Daniel Comparin ◽

Edson Jorge Lima Moreira ◽

Erick M. Souza ◽

Gustavo De-Deus ◽

Ana Arias ◽

...

Keyword(s):

Clinical Trial ◽

Postoperative Pain ◽

Randomized Clinical Trial ◽

Reciprocating Instruments ◽

Endodontic Retreatment

Download Full-text

Efficacy of five rotary systems versus manual instrumentation during endodontic retreatment

Brazilian Dental Journal ◽

10.1590/s0103-64402011000400006 ◽

2011 ◽

Vol 22 (4) ◽

pp. 294-298 ◽

Cited By ~ 9

Author(s):

Luiz Fernando Fariniuk ◽

Vânia Portela Dietzel Westphalen ◽

Ulisses Xavier da Silva-Neto ◽

Everdan Carneiro ◽

Flares Baratto Filho ◽

...

Keyword(s):

Digital Images ◽

Filling Material ◽

Flatbed Scanner ◽

Gutta Percha ◽

Rotary Instruments ◽

Significant Difference ◽

Ah Plus ◽

Endodontic Retreatment

The purpose of this study was to evaluate the efficiency of ProFile, GT, ProTaper, Race and K3 rotary instruments compared with hand K-files for removal of gutta-percha during retreatment. Sixty mandibular premolars were instrumented with GT rotary files and filled by thermomechanical compaction of gutta-percha and AH Plus sealer. The teeth are randomly divided into 6 groups of 10 specimens each. The roots were split longitudinally, digital images were created using a flatbed scanner, and the areas with remaining filling material were demarcated using Image Tool 1.21 software. The results indicate that GT left significantly less (p<0.05) remaining filling material (1.18 ± 1.47) than hand (3.70 ± 3.16) and Hero instruments (2.99 ± 2.58). There was no statistically significant difference (p<0.05) among the others techniques: ProFile (1.99 ± 2.66), ProTaper (2.00 ± 1.99) and K3 (2.71 ± 2.87) when compared with GT. In conclusion, GT, ProFile, ProTaper and K3 were more effective in removing gutta-percha than manual and Hero instruments.

Download Full-text