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Clinical Trial Summary

Caries is a biofilm-mediated global public health problem causing health, social and economic consequences for individuals, communities and countries. Treatment with fixed orthodontic appliances is associated with impaired oral hygiene. This results in a demineralization of the enamel (white spot lesions). The prevalence is fairly high (30-50%) among adolescents and self-applied fluorides cannot completely prevent such lesions. It is therefore important to investigate novel approaches to combat these unwanted adverse effects. A systematic review has suggested that mouthwashes may be suitable technology to control biofilm accumulation in orthodontic patients. The aim of the present pilot study is to evaluate the effect of a novel mouth rinse containing a blend of natural enzymes in addition to fluoride on the presence of oral biofilm in patients undergoing treatment with fixed orthodontic appliances.

Clinical Trial Description

Study design A randomized, double-blind placebo-controlled design with two parallel groups will be performed. The null hypothesis is that the effect on the dental biofilm of the experimental mouth rinse will not differ from that of a placebo rinse without active enzymes. Patients Adolescent patients (14-18 years) attending the Orthodontic specialist clinic in Karlshamn, Sweden will be invited. Methods The patients are randomly allocated to the test group or the control group with aid of computer-generated random number. After the baseline clinical registration, the participants are instructed to thoroughly rinse their mouth by swishing the mouth rinse around the teeth twice daily (morning and evening) for 30 seconds. 10 mL of the assigned solution should be used at each occasion. After rinsing, the subjects should spit out but no additional rinsing with water is allowed afterwards. The duration of the intervention is one week and the patients are instructed to brush their teeth twice daily using a 1,450 ppm fluoride toothpaste. The test and the placebo mouth rinses should be separated from the daily tooth brushing with at least 30 minutes. The patients are provided with a standardized enzyme-free toothpaste to be used during the intervention. Intervention The water-based test rinse contains a blend of enzymes in an aqueous solution. The safety evaluation of the three enzymes is tested. The control (placebo) rinse has an identical taste, color and texture but contains no enzymes. The solutions are provided in color-coded tubes, each containing exactly 10 mL of the test or placebo mouth rinse. An independent monitor based at Malmö University but not involved in the project will guarantee the allocation concealment. Statistical methods All clinical data are processed with the IBM-SPSS software (version 25.0, Chicago, USA). Descriptive analyses will be performed with continuous and categorical data. Differences between and within the groups are compared with unpaired and paired tests, respectively. A p-value less than 0.05 is regarded as statistically significant. The statistical calculations are completed before the group allocation is unveiled. Power calculation There are no previous clinical data available on the biofilm response to the experimental mouth rinse and this pilot study will form the basis of future sample-size calculations. A mean difference of 0.5 units (SD 0.4) is considered as clinically meaningful and an estimation based on α=0.05 and β=0.8 indicate that 20 patients in each group needs to be enrolled to the pilot project. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT05033015
Study type Interventional
Source Malmö University
Status Active, not recruiting
Phase N/A
Start date March 1, 2021
Completion date December 7, 2021

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