One-visit Root Canal Treatment Using Chlorhexidine as a Final Irrigant

Study Overview
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Brief Summary
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A hundred asymptomatic molar teeth with periapical lesions were treated in single versus multiple visit root canal treatment. Half of the teeth were randomly assigned to the one-visit (OV) group and received an additional final rinse with 2% CHX before obturation. The other teeth were treated in two visits (TV) with calcium hydroxide dressing. All patients were recalled and investigated clinically and radiographically for 48 months

Detailed Description
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The aim of the study was to evaluate the radiographic evidence of periapical healing in teeth with apical periodontitis treated in a single visit with an additional final irrigation using 2% chlorhexidine and to compare the results with conventional multiple-visit root canal treatment (RCT) with an intracanal calcium hydroxide dressing as a control group. 100 asymptomatic molar teeth with periapical lesions were treated using engine-driven nickel-titanium (NiTi) instrumentation with 2.5% sodium hypochlorite (NaOCl) and 5% ethylenediaminetetraacetic acid (EDTA) as irrigants. Half of the teeth were randomly assigned to the one-visit (OV) group and received an additional final rinse with 2% chlorhexidine (CHX) before obturation. The other teeth were treated in two visits (TV), after completion of root canal instrumentation calcium hydroxide paste was placed into the root canal and root canal obturation was performed in second visit. All patients were recalled and investigated clinically and radiographically for 48 months. Changes in apical bone density indicating radiographic healing were evaluated.

Official Title
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Comparison of One-visit Root Canal Treatment Using Chlorhexidine as a Final Irrigant and Conventional Two-visit Root Canal Treatment

Conditions
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Root Canal Infection

Intervention / Treatment
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* Other: One visit root canal treatment
* Other: Two visit root canal treatment


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: with a non-contributory medical history, mature molar teeth with periapical lesions, diagnosed as asymptomatic apical periodontitis Exclusion Criteria: clinical symptoms, drainage, more than 5 mm loss of periodontal attachment, previous endodontic treatment, non-restorable tooth

Ages Eligible for Study
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Minimum Age: 18 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: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: One visit root canal treatment with CHX<br>The teeth were treated in one-visit (OV) root canal treatment. Final root canal irrigation was performed with 5% EDTA, followed by 2.5% NaOCl and received an additional final rinse with 2% CHX before obturation. | Other: One visit root canal treatment<br> <br> * Other names: CHX;|
| Active Comparator: Two visit root canal treatment with CH<br>The teeth were treated in two visit (TV) root canal treatment. After completion of root canal instrumentation, calcium hydroxide (CH) paste was placed into the root canal. In second visit, all root canals were irrigated with 5% EDTA followed by 2.5% NaOCl before obturation. | Other: Two visit root canal treatment<br> <br> * Other names: Calcium hydroxide;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Clinical healing according to presence of clinical symptoms | All patients were called for follow up visits. The clinical healing was determined by examining clinical symptoms including presence of pain, tenderness to percussion and palpation, presence of sinus tract or swelling, and mobility. If one of these symptoms occurs, it is considered as failure.. | 12 months | 
| Clinical healing according to presence of clinical symptoms | All patients were called for follow up visits. The clinical healing was determined by examining clinical symptoms including presence of pain, tenderness to percussion and palpation, presence of sinus tract or swelling, and mobility.If one of these symptoms occurs, it is considered as failure.. | 24 months | 
| Clinical healing according to presence of clinical symptoms | All patients were called for follow up visits. The clinical healing was determined by examining clinical symptoms including presence of pain, tenderness to percussion and palpation, presence of sinus tract or swelling, and mobility.If one of these symptoms occurs, it is considered as failure.. | 48 months | 
| Changes in the size and the PAI score of the periapical lesion | The rate of radiographic healing of the periapical lesion. Follow-up visits were performed for all patients in order to evaluate radiographic status. Changes in apical bone density indicating radiographic healing was assessed using Periapical Index (PAI)(Orstavik 1986) as the scoring system. | 12 months | 
| Changes in the size and the PAI score of the periapical lesion | The rate of radiographic healing of the periapical lesion. Follow-up visits were performed for all patients in order to evaluate radiographic status. Changes in apical bone density indicating radiographic healing was assessed using Periapical Index (PAI)(Orstavik 1986) as the scoring system. | 24 months | 
| Changes in the size and the PAI score of the periapical lesion | The rate of radiographic healing of the periapical lesion. Follow-up visits were performed for all patients in order to evaluate radiographic status. Changes in apical bone density indicating radiographic healing was assessed using Periapical Index (PAI)(Orstavik 1986) as the scoring system. | 48 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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chlorhexidine, one visit root canal treatment