Three-Dimensional Evaluation of Condyle-Glenoid Fossa Complex Following Treatment with Herbst Appliance

Jasmine Nindra; Maninder Singh Sidhu; Anuraj Singh Kochhar; Ashish Dabas; Rosa Valletta; Roberto Rongo; Gianrico Spagnuolo

doi:10.3390/jcm10204730

Three-Dimensional Evaluation of Condyle-Glenoid Fossa Complex Following Treatment with Herbst Appliance

J Clin Med. 2021 Oct 15;10(20):4730. doi: 10.3390/jcm10204730.

Authors

Jasmine Nindra¹, Maninder Singh Sidhu¹, Anuraj Singh Kochhar², Ashish Dabas¹, Rosa Valletta³, Roberto Rongo³, Gianrico Spagnuolo^{3

4}

Affiliations

¹ Department of Orthodontics, Faculty of Dental Sciences, SGT University, Gurgaon 122505, India.
² Faculty of Dentistry, University of Toronto, Toronto, ON M5G 0C1, Canada.
³ Department of Neurosciences, Reproductive and Odontostomatological Sciences, Federico II University of Naples, 80131 Naples, Italy.
⁴ Department of Therapeuthic Dentistry, I.M. Sechenov First Moscow State Medical University, 119991 Moscow, Russia.

Abstract

The purpose of the present retrospective observational study was to compare the effects of treatment with Herbst appliance and fixed therapy with elastics on the condyle and glenoid fossa complex. Thirty patients aged between twelve and sixteen years with skeletal Class II malocclusion who met the inclusion criteria were included in the study: fifteen patients treated with Herbst appliance (Group 1), and fifteen patients treated with orthodontic camouflage using MBT prescription (MBT^TM Versatile+ Appliance System) (Group 2). For Group 2, patients had CBCT scans taken before treatment either after Herbst appliance removal or at the end of treatment. CBCT scans were evaluated for changes in condyle-glenoid fossa complex using the In Vivo Dental 5.1 software. Statistical significance was set at p ≤ 0.05. On inter-group comparison, the Herbst group showed statistically significant increases in the condylar height of 1.35 mm (p ≤ 0.001) on the right and 1.21 mm (p ≤ 0.01) on the left side, and a condylar volume of 111.03 mm³ (p ≤ 0.01) on the right and 127.80 mm³ (p ≤ 0.001) on the left side. The Herbst group showed anterior remodelling on the postero-superior aspect of glenoid fossa. Herbst appliance treatment induced growth at the condylar head and anterior remodelling of glenoid fossa, thereby improving the maxilla-mandibular relationship in growing skeletal Class II patients.

Keywords: CBCT; Herbst; condylar volume; condyle-glenoid fossa complex; skeletal Class II malocclusion.