Case ReportOpen Access

ISW Treatment for Skeletal Class III Malocclusion with Poor Arch Coordination

Volume 8 - Issue 1

**Chih-Chieh LIN¹, Chien-Chih YU*², Chun-Shuo HUANG³ and Jian-Hong YU^3,4**

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- ¹Department of General Dentistry, China Medical University Hospital, Taiwan
- ²School of Pharmacy, China Medical University, Taiwan
- ³Department of Orthodontics, China Medical University Hospital, Taiwan
- ⁴School of Dentistry, College of Dentistry, China Medical University, Taiwan
*Corresponding author: Chien-Chih YU, School of Pharmacy, China Medical University, Taiwan

Received: August 07, 2018; Published: August 15, 2018

DOI: 10.26717/BJSTR.2018.08.001590

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Abstract

An adult female (30 years old) came to our clinic with a chief complaint about not able to chew food well and bilateral posterior crossbite. Clinical examination revealed skeletal Class III malocclusion with posterior crossbite and poor arch coordination. Due to her refusal to receive orthognathic surgery, non-surgical treatment was adopted. With successful width decrease of lower arch by two 1st molars extraction; then mesial drive of two 2nd and 3rd molars with closed coil spring, Class III malocclusion was corrected by ISW technique combined with Class III elastics. Treatment was completed in about 18 months and a desirable occlusion after the active treatment was achieved.

Keywords: ISW; Posterior Crossbite; Molar Mesial Drive; Intermaxillary Elastics (IME); Closed Coil Spring