Effect of Root Canal Disinfection with a Diode Laser on Postoperative Pain After Endodontic Retreatment

Abstract Background: This study aims to assess the effect of root canal disinfection with a 980 µm diode laser following chemomechanical root canal preparation on the severity of pain after root canal treatment (RCT).Methods: In present study, asymptomatic, single-rooted teeth with periapical index (PAI) score 3 or 4 were included. All patients were treated with two visits of root canal treatment including dressing with calcium hydroxide. Patients were randomly divided into two groups (n: 28). ‘Control (no laser)’: The final irrigation was performed using 5ml 2.5% NaOCI, followed by 5 ml 17% EDTA and 5 ml distilled water. ‘Laser Disinfection (LD)’: Root canals were irradiated with 980 µm diode laser after final irrigation at both visits. The pain levels were evaluated using visual analog scale (VAS) after 8, 24, 48 hours and 7 days. In addition, analgesic intake and time intervals were recorded by patients. The collected data were statistically analyzed with the Chi-square and Mann-Whitney U test (p<0.05).Results: The average pain level in the control group after 24 hours was significantly higher than that in the laser group after the first appointment (p<0.05). The average pain level after the second appointment was statistically higher at 24 h and 48 h in the control group (p<0.05). PP levels at 24-hs after the first appointment were higher than the second appointment only in the control group (p<0.05). After first appointment, analgesic use in the control group at 8 h (40%) and 24 h (23%) were significantly higher than LD group (p<0.05).Conclusions: Root canal disinfection with diode laser may reduce PP in single-rooted teeth with PAI score 3 or 4.Trial registration: Effect of the Diode Laser on Post-operative Pain After Endodontic Treatment in Teeth with Apical Periodontitis: NCT04486196. Registered 24 July 2020 - Retrospectively registered, http://clinicaltrials.gov/ct2/show/NCT04486196Clinical Trials ID: NCT04486196

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Comparative evaluation of antibacterial efficacy of Allium sativum extract, aqueous ozone, diode laser, and 3% sodium hypochlorite in root canal disinfection: An in vivo study

Journal of Conservative Dentistry ◽

10.4103/jcd.jcd_405_20 ◽

2020 ◽

Vol 23 (6) ◽

pp. 577

Author(s):

Namrata Mehta ◽

Alpa Gupta ◽

Shakila Mahesh ◽

Dax Abraham ◽

Arundeep Singh ◽

...

Keyword(s):

Diode Laser ◽

Sodium Hypochlorite ◽

Root Canal ◽

Comparative Evaluation ◽

Allium Sativum ◽

In Vivo Study ◽

Antibacterial Efficacy ◽

Root Canal Disinfection

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In Vivo Efficacy of Diode Laser as a Monotherapy in Root Canal Disinfection: A Systematic Review and Meta-Analysis

Photobiomodulation Photomedicine and Laser Surgery ◽

10.1089/photob.2021.0073 ◽

2021 ◽

Author(s):

Ali Azhar Dawasaz

Keyword(s):

Systematic Review ◽

Diode Laser ◽

Root Canal ◽

Meta Analysis ◽

In Vivo Efficacy ◽

Root Canal Disinfection

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Effect of an 810 nm Diode Laser on the Healing of a Periapical Abscess

Journal of lasers in medical sciences ◽

10.34172/jlms.2021.03 ◽

2021 ◽

Vol 12 ◽

pp. e3-e3

Author(s):

Fahimeh Anbari ◽

Mehrnaz Asfia ◽

Gelareh Forouzani ◽

Katayoun Talebi Rafsanjan

Keyword(s):

Diode Laser ◽

Root Canal ◽

Surgical Excision ◽

Root Canal Therapy ◽

Periapical Lesions ◽

Root Canals ◽

Root Canal Disinfection ◽

Disinfection Process ◽

Working Length ◽

Golden Standard

Introduction: The golden standard of the treatment of radicular cysts is mainly root canal therapy or surgical excision with apicectomy. The root canals are usually disinfected by the mechanical and chemical actions of instruments and chemical irrigating solutions respectively. To improve the efficacy of the root canal disinfection process, many techniques have been used and many researchers are still trying to reach the quickest and most convenient way to achieve this goal. Diode lasers have shown antibacterial activity on dentinal tubules, and they can penetrate more than 1000 μm into the dentin. Case Presentation: Our patient was a 25-year-old female with an infraorbital abscess caused by a non-vital maxillary canine with periapical radiolucency. After completing the conventional treatment, the optical fiber was inserted into the canal according to the working length previously measured. An 810 nm diode laser at the output power of 4 W was used to irradiate the root canals, with a 300 μm fiber. The patient was free of pain within a few days. The lesion was resolved in radiographic follow-ups, 3 and 6 months after the root canal treatment. Conclusion: A combination of conventional root canal therapy and an 810 nm diode laser is an effective treatment for non-vital teeth with periapical lesions.

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Postoperative pain and antibacterial effect of 980 nm diode laser versus conventional endodontic treatment in necrotic teeth with chronic periapical lesions: A randomized control trial

F1000Research ◽

10.12688/f1000research.16794.1 ◽

2018 ◽

Vol 7 ◽

pp. 1795 ◽

Cited By ~ 3

Author(s):

Dina A. Morsy ◽

Maged Negm ◽

Alaa Diab ◽

Geraldine Ahmed

Keyword(s):

Postoperative Pain ◽

Diode Laser ◽

Root Canal ◽

Bacterial Count ◽

Endodontic Treatment ◽

Control Group ◽

Periapical Lesions ◽

Anterior Teeth ◽

Significant Difference ◽

Aerobic And Anaerobic

Background: Many challenges encounter the endodontist, especially when dealing with necrotic teeth with chronic periapical lesions. Postoperative pain may be induced following conventional endodontic therapy and total eradication of the bacteria is almost unachievable even with recently available techniques. In recent years, diode laser usage in the endodontic field has gained acceptance. Thus, this study aimed to investigate the ability of the diode laser (DL) to decrease postoperative pain and achieve root canal sterility. Methods: 56 patients with anterior teeth with chronic periapical lesions in upper anterior teeth were randomly divided into two groups (n = 28). All patients were treated with two visits of conventional root canal treatment with ProTaper Universal. The DL group: root canals were irradiated with 200 µm fiber optic at both visits; the control group (Endo): the DL fiber was placed in root canal with no activation. Bacterial samples were collected from all the cases at each step of the treatment. Pain levels were evaluated using a numerical rating scale preoperatively, and after 6, 12, 24, 48 hours and 7 days. Bacterial count was used to detect both aerobic and anaerobic bacterial load. Results: The qualitative pain scores revealed statistically significant lower pain levels in the DL group compared with the Endo group at all time intervals (P<0.001), except preoperatively where there was no significant difference. There was a statistically significant lower bacterial count for both aerobic and anaerobic bacteria in the DL group compared with the Endo group in both S3 samples (after laser application) and S4 samples (bacterial colonization) (P<0.001). Conclusion: The 980 nm diode laser may be a successful adjunct to conventional endodontic treatment of necrotic cases with chronic periapical lesions in terms of postoperative pain and root canal disinfection. Trail registration: PACTR201511001275414 (date: 23rd September 2015)

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