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Clinical Trial Summary

The aim of the proposed study is to assess the clinical effect of photodynamic therapy (PDT) on dentin with carious lesions in primary teeth. Patients with primary molars exhibiting deep carious lesions on the occlusal surface indicated for restorative treatment will be randomly allocated to three groups: Group 1 - traditional caries removal with a low-speed drill; Group 2 - PDT + PapaMblue (carious tissue removal agent) modified with methylene blue; and Group 3 - PDT with methylene blue 0.05%. PDT will be performed with low-level laser for the treatment of the carious tissue. Dentin samples will be removed before and after PDT for microbiological analysis. The microbiological samples will be cultured in Brucella blood agar, Mitis Salibarius-bacitracin agar and Rogosa SL agar. The teeth will then be restored using high-viscosity glass ionomer cement, with clinical and radiographic follow up at six, 12 and 24 months. The data will be submitted to descriptive statistics.


Clinical Trial Description

The groups of study (Group 1)- Conventional caries removal with low-speed drill (Group 2)- PDT combined with PapaMblue (Group 3)- PDT combined with methylene blue

The data in descriptive statistics will be used The chi-squared test and Fisher's exact test will be used for the comparison of categorical variables (age and gender). The Student's t-test and analysis of variance will be used for the comparison of signs and symptoms of reversible pulpitis. Pearson's correlation coefficients will be calculated to determine the strength of correlations among the continuous variables. ;


Study Design

Allocation: Randomized, Endpoint Classification: Bio-availability Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Caregiver, Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT02734420
Study type Interventional
Source University of Nove de Julho
Contact Zenildo S Junior, Dentist
Phone 0055 11949759639
Email zenildo-junior@hotmail.com
Status Recruiting
Phase Phase 1
Start date September 2013
Completion date October 2016

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