Orthodontic Management of Chin Projection and Height in Class III Malocclusion - Prof. Eric Liou - HỘI NGHỊ KHOA HỌC HỘI NẮN CHỈNH RĂNG VIỆT NAM LẦN THỨ VII

TURNING CHALLENGES INTO FACIAL BALANCE – CLASS III SOLUTIONS FROM ONE OF ASIA’S LEADING EXPERTS

Class III malocclusion with chin protrusion remains one of the most complex challenges in clinical orthodontics.

At VAO-WIOC 2025, Prof. Eric Liou (Graduate Institute of Craniofacial Medicine, Chang Gung University, Taoyuan, Taiwan) – a pioneer in dentofacial orthopedics and the author of numerous groundbreaking techniques and clinical studies – will deliver an insightful lecture:

Orthodontic Management of Chin Projection and Height in Class III Malocclusion

Abstract of Eric Liou’s Presentation at VAO-WIOC 2025

The combination of bite raiser/block/turbo and intermaxillary vertical elastics is one of the common techniques used to decrease chin projection through orthodontic posterior repositioning of the mandible, achieved by extrusion of both upper and lower dentitions.

However, due to the extrusion of the lower dentition, this technique also increases the lower facial height and chin height. The increase in chin height results in a more slender facial appearance, which could be beneficial for Class III patients with a low-angle, square face.

In contrast, for Class III patients with a high-angle, long face, this technique may exacerbate lower incisor display, lip incompetence, and excessive chin height.

The objective of this presentation is to propose a viable solution for reducing chin height by intruding the lower anterior teeth using TADs.