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VOLUME 14 , ISSUE 2 ( February, 2023 ) > List of Articles

REVIEW ARTICLE

Effect of Herbst Treatment on Mandibular Length (Co-Gn) in Patients with Class II Malocclusion: A Systematic Review and Meta-analysis

Sugath B Goonetilleke, Florenly, Gilbert Lister, Osama Sayed, Fioni

Keywords : Class II malocclusion, Condylion Gnathion, Herbst appliance, Mandibular length, Meta-analysis, Systematic review

Citation Information : Goonetilleke SB, Florenly, Lister G, Sayed O, Fioni. Effect of Herbst Treatment on Mandibular Length (Co-Gn) in Patients with Class II Malocclusion: A Systematic Review and Meta-analysis. World J Dent 2023; 14 (2):176-181.

DOI: 10.5005/jp-journals-10015-2181

License: CC BY-NC 4.0

Published Online: 17-04-2023

Copyright Statement:  Copyright © 2023; The Author(s).


Abstract

Aim: This systematic review and meta-analysis were conducted to assess the effectiveness of Herbst appliances on mandibular length (Co-Gn) in patients with class II malocclusion. Background: Mandibular skeletal retrusion is the most consistent diagnostic feature in class II malocclusion. According to a recent meta-analysis, the Herbst appliance effectively treats class II malocclusions. There is currently little evidence about the effect of Herbst treatment on different facial measurements, for which stems from the rationale of this review. Review results: A total of 13 studies were included in this systematic review and meta-analysis with 355 patients who underwent Herbst appliance. Authors used review manager 5.4 to conduct quantitative data synthesis, and random-effects meta-analysis was used to assess the effect of Herbst treatment on mandibular length (Co-Gn). As part of the pooled meta-analysis, heterogeneity was assessed using an I2 statistic. The funnel plot and funnel plot symmetry metrics were used to quantify publication bias. Conclusion: We demonstrated that Herbst treatment significantly increases the mandibular length Condylion Gnathion (Co-Gn). According to our findings, the Herbst appliance is effective for patients with class II malocclusion. Clinical significance: The effect of Herbst treatment in terms of increasing the mandibular length must be considered while planning treatment for individuals with class II malocclusion. The findings should be interpreted with caution due to the low quality of evidence and publication bias. The variations in observation/treatment durations may also affect and bias the findings. We recommend future high quality studies to be conducted on subjects with Herbst appliances to accurately measure and report on cephalometric changes.

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