Economic analysis to promote the resource circulation of end-of-life vehicles in Korea.

This study explores how Korea's ELV recycling policy can be improved to meet the targeted ELV recycling rate by reviewing the characteristics of the recycling policies adopted in Korea and abroad and conducting an economic analysis of each step of the ELV recycling process, namely, dismantling (including waste gas treatment), shredding, and ASR recycling. The costs and revenues of each ELV treatment process was computed using the data from operators in Korea to estimate their economic feasibility. The findings indicated that, in the case of Korea, dismantling accounted for the largest portion of the ELV recycling process, pointing to the need for policies providing financial support to ELV dismantlers to enhance the overall ELV recycling rate.

Miniscrew-assisted rapid palatal expansion for managing arch perimeter in an adult patient.

Introduction:: Etiology of dental crowding may be related to arch constriction in diverse dimensions, and an appropriate manipulation of arch perimeter by intervening in basal bone discrepancies cases, may be a key for crowding relief, especially when incisors movement is limited due to underlying pathology, periodontal issues or restrictions related to soft tissue profile.

Objectives:: This case report illustrates a 24-year old woman, with maxillary transverse deficiency, upper and lower arches crowding, Class II, division 1, subdivision right relationship, previous upper incisors traumatic episode and straight profile. A non-surgical and non-extraction treatment approach was feasible due to the miniscrew-assisted rapid palatal expansion technique (MARPE).