Turkish Journal of Orthodontics
Original Article
Comparative Evaluation of Soft Tissue Profile Changes with Herbst and Twin Block Appliances in Class II Malocclusion Patients: A Perception Study

Comparative Evaluation of Soft Tissue Profile Changes with Herbst and Twin Block Appliances in Class II Malocclusion Patients: A Perception Study

1.

Department of Orthodontics and Dentofacial Orthopaedics, Sri Ramachandra Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, India

Turk J Orthod 2022; 35: 173-179
DOI: 10.5152/TurkJOrthod.2022.21072
Read: 154 Downloads: 88 Published: 23 September 2022

Objective: To comparatively evaluate the perception of patients’ soft tissue profiles treated with Herbst and Twin Block appliances and correlate the perception with cephalometric parameters.

Methods: The record of 30 patients (15 Herbst and 15 Twin Block) treated for a period of 6 months (±1.1 months) was included in the study. A total of 60 resulting profile silhouettes (from pre- and post-functional profile photographs) were evaluated by 30 examiners and were divided into 3 groups: orthodontists, general dentists, and laypersons. The profiles were arranged in a randomized order, and the examiners rated the profiles using a visual analog scale. Paired t-test and independent t-test were performed to find a significant difference within and between the appliances, respectively. A treatment outcome correlation was done using Pearson’s correlation test between the visual analog scale scores and cephalometric parameters.

Results: Within the appliances, the orthodontist perceived a difference with only the Twin Block appliance (P = .02). The general dentists perceived a significant difference with both Herbst (P = .02) and Twin Block (P = .001) appliances, whereas the laypersons did not perceive any profile improvement on treatment with functional appliances. However, between the appliances, no statistically significant profile difference was seen with all 3 groups of examiners. The ANB angle had a significant negative correlation (P = .007) to the visual analog scale scores given by the orthodontists for the Herbst appliance.

Conclusion: No perceptible difference was found in the profile enhancement between Herbst and Twin Block appliances with all 3 groups of examiners. The ANB angle contributed to the difference in profile perception between the appliances for the orthodontists.

Cite this article as: Kannan A, Padmanabhan S. Comparative evaluation of soft tissue profile changes with herbst and twin block appliances in class II malocclusion patients: A perception study. Turk J Orthod. 2022;35(3):173-179.

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