Efficacy of Prabotulinum and Onabotulinum Toxin-A for Facial Wrinkles

Face Clinical Trial

Official title: Efficacy of Prabotulinum Toxin-A and Onabotulinum Toxin-A for the Treatment of Expression Lines in the Upper Third of the Face.

Status Completed

Clinical Trial Summary

The appearance of facial wrinkles, lines, or folds is a natural phenomenon during aging. Different scales help classify wrinkles objectively, such as the Facial Wrinkle Scale. Others help classify patients' subjective perspectives, like the Face-Q questionnaire. The application of Botulinum Toxin is the most performed non-surgical aesthetic procedure in the world to treat facial expression lines. The present study aims to compare the efficacy of onabotulinum toxin-A (BOTOX®) and prabotulinum toxin-A (NABOTA®) to treat expression lines in the upper third of the face, based on objective and subjective follow-up, using the FWS scale and FACE-Q questionnaire, respectively.

Clinical Trial Description

This is an experimental, comparative, longitudinal, open-label, prospective study at the Instituto de Oftalmología Fundación Conde de Valenciana I.A.P, Mexico City, Mexico.

The investigators used a proportion formula to calculate the sample size, with an alpha value of 0.05, and a precision of 3%. The difference in the effect between the two toxins is 20%, considering a 20% loss, with a total of 18 patients. A nonprobabilistic sampling of consecutive cases was performed. Once patients were selected and included in the study, they were randomly assigned to a group.

After inclusion, simple randomization was performed in the Onabotulinum and Prabotulinum groups. Each group received intramuscular administration of onabotulinum toxin-A and prabotulinum toxin-A in the upper facial third.

The investigators used descriptive statistics to analyze the demographic variables and employed the Mann-Whitney U test to assess differences in the quantitative and ordinal outcome variables between the groups before and at the end of the study. Additionally, the investigators employed the chi-square test to compare the intergroup results before and at the end of the study for nominal variables. To compare intragroup results over time, the investigators conducted a repeated measures ANOVA test for continuous variables, Friedman test for ordinal variables, and Cochran's Q test for nominal variables. We used SPSS Version 20 (Chicago, IL, USA) for analysis and considered a value of p<0.05 as statistically significant. ;

Related Conditions & MeSH terms

• Face
• Rejuvenation

• NCT number: NCT05840445
• Study type: Interventional
• Source: Instituto de Oftalmología Fundación Conde de Valenciana
• Status: Completed
• Phase: Phase 4
• Start date: June 15, 2020
• Completion date: January 15, 2021