Antimicrobial Photodynamic Therapy Applied in Orthodontic. Orthodontic Patients.

University of Sao Paulo

Status and phase: Completed; Phase 1

Conditions: Dentist-Patient Relations

Treatments: Drug: DMSO + water; Drug: Curcumin; Device: LED; Drug: Chlorhexidine gluconate; Drug: Surfactant

Study type: Interventional

Funder types: Other

Identifiers

NCT02337192

orto14

Details and patient eligibility

About

We demonstrated the use of the Antimicrobial Photodynamic Therapy as a coadjutant oral decontamination agent. It was also shown that SDS surfactant improves the antibacterial action of APDT when using Curcumin as the photosensitizer. The decontamination levels obtained with APDT are comparable with the levels observed with the use of Chlorhexidine. The clinical relevancy is the control of oral microbial load which will improve the patients' quality of life and will decrease the possibility of cross contamination in the dental office.

Full description

The installation of the orthodontic appliances promotes an increase in the retentive area available for microbial aggregation, difficult the oral health promotion and, in addition, promotes the artificial selection of biofilms containing a higher load of pathogenic microorganisms. In this way, it becomes of critical importance, the development of techniques that might aid in the reduction of the oral microbial load. One possible approach is the use of the Antimicrobial Photodynamic Therapy (APDT). In this direction, the objective of this study was to assess the clinical utility of the APDT and the association of the APDT with the SDS surfactant as oral decontamination agents in orthodontic patients. The selected patients (n=24) were randomly distributed within seven experimental groups: G1 - Negative control, G2 - Curcumin mouthwash, G3 - Curcumin mouthwash+SDS, G4 - light irradiation, G5 - APDT, G6 - APDT+SDS and G7 - Positive Control (Chlorhexidine mouthwash). Nonstimulated saliva samples were collected from each one of the patients in three steps (S), as follows: S1- Initial condition, S2 - Treatment with mouthwashes (water, Chlorhexidine or Curcumin) and S3 - After APDT treatment. The efficacy of the proposed treatment protocols was assessed in function of the survival fraction observed in each group. The obtained results were statistically analyzed using variance analysis (ANOVA) and the Kruskal-Wallis test.

Enrollment: 24 patients

Sex: All

Ages: 18 to 50 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Inclusion criteria were: being under fixed orthodontic treatment, absence of clinical signs of periodontal disease, not used antibiotics 90 days prior to the participation on this study and not use fluoride mouthwashes.

Exclusion criteria

• Exclusion criteria were: signs of uncontrolled systemic diseases (diabetes, high blood pressure and heart conditions), breast feeding or pregnant women, patients with oral tumors and patients with history of allergy to any of the materials used, such as Curcumin and Chlorhexidine.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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24 participants in 7 patient groups

Group 1

Experimental group

Description:

Negative control - Moutwash with 1,5mL of dimethyl sulfoxide at 5% (DMSO) in water solution - During 2 minutes.

Treatment:

Drug: DMSO + water

Group 2

Experimental group

Description:

Mouthwash with Swish with Curcumin

Treatment:

Drug: Curcumin

Group 3

Experimental group

Description:

Moutwash with Swish with Curcumin + SDS

Treatment:

Drug: Curcumin

Drug: Surfactant

Group 4

Experimental group

Description:

Experiment use dental irradiation with blue light (LED) only.

Treatment:

Device: LED

Group 5

Experimental group

Description:

Antimicrobial Photodynamic Therapy (APDT) with blue light and Curcumin salt.

Treatment:

Device: LED

Drug: Curcumin

Group 6

Experimental group

Description:

Antimicrobial Photodynamic Therapy (APDT) with blue light, Curcumin salt and surfactant.

Treatment:

Device: LED

Drug: Curcumin

Drug: Surfactant

Group 7

Experimental group

Description:

Positive control - Use of mouthwash with Chlorhexidine only

Treatment:

Drug: Chlorhexidine gluconate