Photodynamic Therapy (PDT) and Postendodontic Pain
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Enrollment
- 95
- Locations
- 1
- Primary Endpoint
- Postoperative Pain Intensity (Visual Analog Scale - VAS)
Study Overview
Brief Summary
To compare the intensity and trajectory of postoperative pain (0-72 hours) between (A) a conventional final irrigation protocol without activation and (B) a PDT-augmented final disinfection in mandibular molars and premolars.
Detailed Description
This retrospective controlled clinical cohort study investigated the effects of photodynamic therapy (PDT) on post-endodontic pain in mandibular molars and premolars treated by undergraduate students. Eligible patients were selected from the Istanbul Atlas University Faculty of Dentistry clinics. Inclusion criteria encompassed adult patients requiring endodontic treatment in posterior teeth, without systemic contraindications or signs of acute apical abscess.
Participants were assigned to one of two groups:
(A) conventional final irrigation without activation (control), and (B) PDT-augmented final disinfection (experimental).
All treatments were performed by undergraduate dental students under faculty supervision. Root canals were shaped using a standardized rotary instrumentation protocol. In both groups, final irrigation included 2.5% sodium hypochlorite (NaOCl), followed by 17% EDTA for smear layer removal.
In the experimental group, after completion of the same irrigation regimen, a methylene blue photosensitizer was introduced into the canal and allowed to remain for 60 seconds. The dye was subsequently activated using an intra-canal diode laser fiber for 60 seconds per canal, following manufacturer instructions for photodynamic therapy. All canals were obturated at the second visit using the single-cone technique.
Study Design
- Study Type
- Observational
- Observational Model
- Cohort
- Time Perspective
- Retrospective
Eligibility Criteria
- Ages
- 18 Years to 60 Years (Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Adults aged 18-60 years Patients requiring primary endodontic treatment of posterior teeth (premolars or molars) Patients without systemic diseases Patients treated at the Istanbul Atlas University Faculty of Dentistry student clinic Teeth with no intraoperative complications (no perforation, no instrument separation, no ledge formation) Treatments completed with either photodynamic therapy (PDT) activation or no activation (control group)
Exclusion Criteria
- •Teeth with previous root canal treatment Teeth with open apices Presence of severe periodontal disease Incomplete clinical or radiographic records Patients with systemic conditions that may influence postoperative pain perception Any intraoperative complications during treatment (perforation, ledge, instrument separation, etc.) Presence of acute apical abscess
Outcomes
Primary Outcomes
Postoperative Pain Intensity (Visual Analog Scale - VAS)
Time Frame: Time Frame: 6, 24, 48, and 72 hours after treatment Unit of Measure: VAS score (0-10)
Postoperative pain will be assessed using a 10-cm Visual Analog Scale (VAS), where 0 represents "no pain" and 10 represents "worst pain imaginable." Higher scores indicate greater pain intensity.
Secondary Outcomes
- Analgesic Consumption (Number of Tablets Taken)(Up to 72 hours after treatment)
Investigators
Ayfer Atav
Assoc Prof
Atlas University