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| Name | Class |
|---|---|
| Fundação de Amparo à Pesquisa do Estado de São Paulo | OTHER_GOV |
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To evaluate the efficacy of a castor bean-based solution (Ricinus communis) for removal of complete denture biofilm, comparing it with two products available on the market (sodium hypochlorite and alkaline peroxide). Fifty complete maxillary denture-wearers were instructed to brush their dentures after meals and once a day, for a period of 07 days, immerse them in the following solutions: A - Control: Physiological solution(20 minutes). B - Polident alkaline peroxide(3 minutes). C - 1% sodium hypochlorite(20 minutes). D - castor bean-based solution(20 minutes). The participants immersed their dentures in each of the solutions, according to a randomized sequence. For biofilm quantification, before (Baseline) and after the use of each product, the internal surfaces of maxillary complete dentures were revealed (1% neutral red), photographed and the stained biofilm was quantified with the aid of software (Image Tool 3.0). After concluding measurements of the areas (total and biofilm), the percentage of surface covered by biofilm of the complete denture was calculated .
The study sought to minimize the occurrence of bias, and whenever possible sought to "blind" the parties involved (researchers, volunteers and statisticians), since none of them had knowledge of the allocation of treatments. The present study also followed the criteria described in the CONSORT Declaration
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Physiological solution | Placebo Comparator | 1)Negative Control: physiological solution, for 20 minutes All the volunteers used one of the four chemical methods (interventions) in a random sequence for a period of 07 days each. Between each period of use, there was a one week wash out period during which the patient performed his/her habitual cleaning procedure, in order to avoid a carry-over effect. |
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| Sodium hypochlorite | Active Comparator | 2)active Comparator 1: Sodium hypochlorite, for 20 minutes All the volunteers used one of the four chemical methods (interventions) in a random sequence for a period of 07 days each. Between each period of use, there was a one week wash out period during which the patient performed his/her habitual cleaning procedure, in order to avoid a carry-over effect. |
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| Peroxide alkaline | Active Comparator | 2)Active Comparator 2: Alkaline peroxide (Polident), for 5 minutes All the volunteers used one of the four chemical methods (interventions) in a random sequence for a period of 07 days each. Between each period of use, there was a one week wash out period during which the patient performed his/her habitual cleaning procedure, in order to avoid a carry-over effect. |
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| Castor bean solution | Experimental | 3)Experimental: castor bean solution, for 20 minutes All the volunteers used one of the four chemical methods (interventions) in a random sequence for a period of 07 days each. Between each period of use, there was a one week wash out period during which the patient performed his/her habitual cleaning procedure, in order to avoid a carry-over effect. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Physiological solution | Other | The volunteers were instructed to brush the internal surface of complete dentures for 2 minutes, 3 times a day, after meals (breakfast, lunch and dinner) and use the following chemical immersion methods, only once a day after dinner: A - Control (Co): Physiological solution, for 20 minutes. B) 1% Sodium Hypochlorite, for 20 minutes. C) Polident Alkaline Peroxide, for 3 minutes. D) 2,0% Castor bean solution Ricinus communis, for 20 minutes. In addition, the participants were instructed to immerse their dentures in water during the night period, before going to sleep. |
| Measure | Description | Time Frame |
|---|---|---|
| Denture area covered with biofilm | The volunteers were instructed to brush their dentures ,3 times a day and use the following chemical immersion methods, only once a day after dinner: A)Physiological solution .B) 1% Sodium Hypochlorite .C) Polident Alkaline Peroxide .D) 2,0% Castor bean solution . All the volunteers used one of the four chemical methods in a random sequence for a period of 07 days each. Between each period of use, there was a one week wash out period during which the patient performed his/her habitual cleaning procedure.On the first day and after 07 days of using the interventions, the internal surfaces of dentures were revealed with 1% neutral red solution and photographed with a digital photographic camera. Biofilm was measured on the photographic images of the complete dentures, using the computerized quantitative method "ImageTool". After concluding measurements of the areas (total and biofilm), the percentage of surface covered by biofilm of the complete denture was calculated . | 8 weeks |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Ingrid M Andrade, PhD | University of Sao Paulo | Principal Investigator |
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| ID | Term |
|---|---|
| D000077330 | Saline Solution |
| D012973 | Sodium Hypochlorite |
| C102654 | Polident |
| ID | Term |
|---|---|
| D000077324 | Crystalloid Solutions |
| D007552 | Isotonic Solutions |
| D012996 | Solutions |
| D004364 | Pharmaceutical Preparations |
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| Sodium hypochlorite | Other | The volunteers were instructed to brush the internal surface of complete dentures for 2 minutes, 3 times a day, after meals (breakfast, lunch and dinner) and use the following chemical immersion methods, only once a day after dinner: A - Control (Co): Physiological solution, for 20 minutes. B) 1% Sodium Hypochlorite, for 20 minutes. C) Polident Alkaline Peroxide, for 3 minutes. D) 2,0% Castor bean solution Ricinus communis, for 20 minutes. In addition, the participants were instructed to immerse their dentures in water during the night period, before going to sleep. |
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| Alkaline Peroxide | Other | The volunteers were instructed to brush the internal surface of complete dentures for 2 minutes, 3 times a day, after meals (breakfast, lunch and dinner) and use the following chemical immersion methods, only once a day after dinner: A - Control (Co): Physiological solution, for 20 minutes. B) 1% Sodium Hypochlorite, for 20 minutes. C) Polident Alkaline Peroxide, for 3 minutes. D) 2,0% Castor bean solution Ricinus communis, for 20 minutes. In addition, the participants were instructed to immerse their dentures in water during the night period, before going to sleep. |
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| Castor bean solution | Other | The volunteers were instructed to brush the internal surface of complete dentures for 2 minutes, 3 times a day, after meals (breakfast, lunch and dinner) and use the following chemical immersion methods, only once a day after dinner: A - Control (Co): Physiological solution, for 20 minutes. B) 1% Sodium Hypochlorite, for 20 minutes. C) Polident Alkaline Peroxide, for 3 minutes. D) 2,0% Castor bean solution Ricinus communis, for 20 minutes. In addition, the participants were instructed to immerse their dentures in water during the night period, before going to sleep. |
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| D006997 |
| Hypochlorous Acid |
| D017606 | Chlorine Compounds |
| D007287 | Inorganic Chemicals |
| D010087 | Oxides |
| D017601 | Oxygen Compounds |
| D017670 | Sodium Compounds |