Postoperative Pain After Root Canal Disinfection Via Diode Laser

Study Overview
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Brief Summary
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The prevention and control of post-treatment pain is of great importance for the comfort of the patient as well as for the clinician's prestige. In this study, the effect of 940 nm diode laser disinfection on the postoperative pain of retreatment cases was evaluated.

Detailed Description
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From the fact that microorganisms are the most common factors causing pain, this study aimed to evaluate effect of 940 nm diode laser disinfection performed in addition to conventional irrigation on postoperative pain of retreatment cases. Eighty-four patients with chronic apical periodontitis were treated. Root canal fillings were removed using rotary files. Root canals were irrigated using sodium hypochlorite between instrument changes. Final irrigation was performed using sodium hypochlorite and ethylenediaminetetraacetic acid (EDTA). The cases were randomly allocated into 2 groups: Group 1: Diode laser disinfection group, Group 2: control group. Root canal fillings were applied and crowns were restored. All treatments were completed in a single appointment. Patients were given a pain scale and they were requested to mark the code that reflects their pain intensity during 3 days.

Official Title
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Effect of Diode Laser Disinfection on Postoperative Pain in Retreatment Cases

Conditions
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Root Canal Infection, Pain

Intervention / Treatment
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* Device: Diode laser disinfection
* Device: Pseudo diode laser disinfection


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Only asymptomatic single rooted teeth that had an initial root canal filling diagnosed with chronic periodontitis (minimum size 2x2 mm) Exclusion Criteria: teeth with root canal fillings newer than 4 years, overfilled teeth, teeth with intraradicular posts, existence of a sinus tract, consumption of antibiotics within 1 month, consumption of analgesics in last 5 days, systemic disease, pregnancy, history of trauma, traumatic occlusion

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 52 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Diode Laser disinfection<br>Diode laser disinfection Laser type: 940 nm diode laser Power: 1 Watt Tip: 200 micrometer fibre tip | Device: Diode laser disinfection<br>* Root canal disinfection using a 940 nm dental laser after the removal of root canal filling of failed endodontic cases.<br>|
| Placebo Comparator: Pseudo Diode Laser Disinfection<br>Inactivated Diode laser application in root canal | Device: Pseudo diode laser disinfection<br>* Without activating laser energy, same procedure as experimental group was performed (Sham laser application)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Post-endodontic pain after diode laser disinfection in retreatment cases | Pain intensity was evaluated at 24 hours after retreatment procedures. An 11-item numerical rating scale (NRS) was used to assess the pain. This NRS is a segmented numeric version of the visual analog scale (VAS) in which a respondent selects a whole number (0 -10 integers) that best reflects the intensity of their pain. Number 0 represents 'no pain' whereas number 10 represents 'pain as bad as someone can imagine'.All patients were requested to mark a number corresponding to their average pain. | 24 hours postoperatively | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Post-endodontic pain after diode laser disinfection in retreatment cases | Pain intensity was evaluated at 48 hours after retreatment procedures. An 11-item numerical rating scale (NRS) was used to assess the pain. This NRS is a segmented numeric version of the visual analog scale (VAS) in which a respondent selects a whole number (0 -10 integers) that best reflects the intensity of their pain. Number 0 represents 'no pain' whereas number 10 represents 'pain as bad as someone can imagine' . All patients were requested to mark a number corresponding to their average pain. | 24 to 48 hours postoperatively | 
| Post-endodontic pain after diode laser disinfection in retreatment cases | Pain intensity was evaluated at 72 hours after retreatment procedures. An 11-item numerical rating scale (NRS) was used to assess the pain. This NRS is a segmented numeric version of the visual analog scale (VAS) in which a respondent selects a whole number (0 -10 integers) that best reflects the intensity of their pain. Number 0 represents 'no pain' whereas number 10 represents 'pain as bad as someone can imagine'. All patients were requested to mark a number corresponding to their average pain. | 48 to 72 hours postoperatively | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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postoperative pain, Diode laser, retreatment