An interventional study of Cotinus Coggygria mouthwash and Placebo mouthwash in Orthodontic Appliance Complication and Halitosis, sponsored by University of Athens. Completed at 1 site in Greece. Open to participants aged 13 Years to 18 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-12-18.
Sponsored by University of Athens · Not applicable, Interventional, and Prevention
The aim of this trial was to investigate the effect of Cotinus Coggygria mouthwash on halitosis using as proxy the levels of the Volatile Sulfur Compounds (VSCs), and the effect on plaque and gingival indices in adolescents undergoing orthodontic treatment with fixed conventional labial appliances.
93 studies on the registry are indexed under Halitosis; 17 are open to participants now.
This study's enrollment of 30 is below the median of 45 across 79 interventional studies indexed under Halitosis.
Browse Halitosis studies →University of Athens is the lead sponsor of 139 studies on the registry; 19 are open to participants now.
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Patients eligible for the trial must comply with all of the following at randomization:
This age group represents the majority of patients seeking orthodontic treatment and is homogeneous regarding occupational status (high-school and lyceum students in Greece). Younger patients might present with cooperation problems.
Exclusion Criteria:
Patients will be excluded for any of the following reasons:
Experimental Group: patients, age 13-18, conventional brackets, Cotinus Coggygria mouthwash 15 patients, with conventional brackets
Dietary Supplement: Cotinus Coggygria mouthwash
Control Group: patients, age 13-18, conventional brackets, Placebo mouthwash 15 patients, with conventional brackets
Dietary Supplement: Placebo mouthwash
All 30 patients will be randomly assigned to either the Cotinus Coggygria mouthwash group A (Natural Smoke Tree Hydrolina, Ina Essentials) (n = 15) or the placebo Mouthwash group B (from the same manufacturer) (n = 15). All patients will be asked to use the mouthwash twice a day for 14 days and to maintain their usual oral hygiene routine. The measurements will be done in the morning and at least three hours after brushing and without the use of the mouthwash by the participant on the day of the assessments.
All 30 patients will be randomly assigned to either the group A (Cotinus Coggygria mouthwash ) (n = 15) or the placebo Mouthwash group B (from the same manufacturer) (n = 15). All patients will be asked to use the mouthwash twice a day for 14 days and to maintain their usual oral hygiene routine. The measurements will be done in the morning and at least three hours after brushing and without the use of the mouthwash by the participant on the day of the assessments.
Hydrogen Sulfide (H2S) Levels
Halitosis can be assessed using Gas chromatography that offers highly accurate qualitative and quantitative analysis of the individual VSCs, making it the preferred method for comprehensive diagnostic evaluation in both routine and complex cases. Halitosis is typically defined by a total VSCs concentration of ⩾150 ppb, a threshold supported across multiple clinical studies. The malodor results from the degradation of organic components in saliva, leading to the production of volatile sulfur compounds (VSCs), including hydrogen sulfide (H2S). H2S has been linked to increased gingival cell apoptosis and susceptibility to periodontitis.
Time frame: baseline
Hydrogen Sulfide (H2S) Levels
Halitosis can be assessed using Gas chromatography that offers highly accurate qualitative and quantitative analysis of the individual VSCs, making it the preferred method for comprehensive diagnostic evaluation in both routine and complex cases. Halitosis is typically defined by a total VSCs concentration of ⩾150 ppb, a threshold supported across multiple clinical studies. The malodor results from the degradation of organic components in saliva, leading to the production of volatile sulfur compounds (VSCs), including hydrogen sulfide (H2S). H2S has been linked to increased gingival cell apoptosis and susceptibility to periodontitis.
Time frame: 2 weeks
Modified plaque index (PI-M)
The Silness and Löe index (Silness and Löe, 1964) does not take into account the pattern of plaque accumulation in orthodontic patients. To overcome this problem, Williams et al. (1991) divided the tooth into mesial, distal, gingival, and incisal regions in relation to the bracket and scored plaque in each region using the four codes of the original index (0 to 3). The values are summed to obtain a total score, which ranges from 0 to 12 for each tooth. This modified index is recommended for patients with fixed orthodontic appliances because it acknowledges the usual effects of orthodontic appliances on plaque distribution and has much greater categorical discrimination.
Time frame: baseline
Modified plaque index (PI-M)
The Silness and Löe index (Silness and Löe, 1964) does not take into account the pattern of plaque accumulation in orthodontic patients. To overcome this problem, Williams et al. (1991) divided the tooth into mesial, distal, gingival, and incisal regions in relation to the bracket and scored plaque in each region using the four codes of the original index (0 to 3). The values are summed to obtain a total score, which ranges from 0 to 12 for each tooth. This modified index is recommended for patients with fixed orthodontic appliances because it acknowledges the usual effects of orthodontic appliances on plaque distribution and has much greater categorical discrimination.
Time frame: 2 weeks
Gingival Index (GI)
The original Silness and Löe Plaque Index (1964) was not designed for orthodontic patients. The present study adopted a widely used modification of this index, in which the teeth are divided into incisal, distal, and mesial areas relative to the bracket, and plaque is graded in each area using values from 0 to 3.
Time frame: baseline
Gingival Index (GI)
The original Silness and Löe Plaque Index (1964) was not designed for orthodontic patients. The present study adopted a widely used modification of this index, in which the teeth are divided into incisal, distal, and mesial areas relative to the bracket, and plaque is graded in each area using values from 0 to 3.
Time frame: 2 weeks
Dimethyl Sulfide [ (CH3)2S] Levels
Halitosis can be assessed using Gas chromatography that offers highly accurate qualitative and quantitative analysis of the individual VSCs, making it the preferred method for comprehensive diagnostic evaluation in both routine and complex cases. Halitosis is typically defined by a total VSCs concentration of ⩾150 ppb, a threshold supported across multiple clinical studies. The malodor results from the degradation of organic components in saliva, leading to the production of volatile sulfur compounds (VSCs), including Dimethyl Sulfide \[ (CH3)2S\] Levels.
Time frame: baseline
Dimethyl Sulfide [ (CH3)2S] Levels
Halitosis can be assessed using Gas chromatography that offers highly accurate qualitative and quantitative analysis of the individual VSCs, making it the preferred method for comprehensive diagnostic evaluation in both routine and complex cases. Halitosis is typically defined by a total VSCs concentration of ⩾150 ppb, a threshold supported across multiple clinical studies. The malodor results from the degradation of organic components in saliva, leading to the production of volatile sulfur compounds (VSCs), including Dimethyl Sulfide \[ (CH3)2S\] Levels.
Time frame: 2 weeks
Methyl-mercaptan (CH3SH) Levels
Halitosis can be assessed using Gas chromatography that offers highly accurate qualitative and quantitative analysis of the individual VSCs, making it the preferred method for comprehensive diagnostic evaluation in both routine and complex cases. Halitosis is typically defined by a total VSCs concentration of ⩾150 ppb, a threshold supported across multiple clinical studies. The malodor results from the degradation of organic components in saliva, leading to the production of volatile sulfur compounds (VSCs), including Methyl-mercaptan (CH3SH) levels.
Time frame: baseline
Methyl-mercaptan (CH3SH) Levels
Halitosis can be assessed using Gas chromatography that offers highly accurate qualitative and quantitative analysis of the individual VSCs, making it the preferred method for comprehensive diagnostic evaluation in both routine and complex cases. Halitosis is typically defined by a total VSCs concentration of ⩾150 ppb, a threshold supported across multiple clinical studies. The malodor results from the degradation of organic components in saliva, leading to the production of volatile sulfur compounds (VSCs), including Methyl-mercaptan (CH3SH) levels.
Time frame: 2 weeks
Plan to share: No
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Ran from Dec 2025 to primary completion in Dec 2025, 0 months.
Of 35 non-industry interventional studies with no phase under Halitosis, half reached primary completion within 10 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 18. This study's 0 months is below that.
Counting every sponsor, half of 43 studies reached it within 10 months; a quarter within 3 and three quarters within 18.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.
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