Effects of a new type of clear overlay retainer on occlusal contacts
김경연, 안효원, 김성훈, Nelson Gerald,
소속 상세정보
김경연 ( Kim Kyoung-Yeon ) - Kyung Hee University Graduate School Department of Orthodontics
안효원 ( Ahn Hyo-Won ) - Kyung Hee University Graduate School Department of Orthodontics
김성훈 ( Kim Seong-Hun ) - Kyung Hee University Graduate School Department of Orthodontics
( Nelson Gerald ) - University of California Department of Orofacial Science Division of Orthodontics
KMID : 0361920170470030207
Abstract
The popularity of clear overlay retainers (CORs) has increased recently because of their advantages such as better esthetics, cost effectiveness, easy fabrication, and good compliance. However, a deficiency in posterior occlusal settling is a reported limitation of CORs. The aim of this study was to evaluate the posterior occlusal contact changes in a new type of clear orthodontic retainer called Oral-treaper (OTP), which consists of three layers and has stronger mechanical characteristics than do conventional retainers. Three patients who completed fixed orthodontic treatment received OTP as a removable retainer. Cast models were fabricated after the removal of fixed appliances (T1) and after 4 to 11 months of using the retainers (T2). We evaluated all the cast models to compare the post-orthodontic settling pattern during the use of the OTPs. The depth of occlusal contacts was evaluated using color maps. The OTP did not prevent vertical settling in all patients but resulted in an improvement in posterior occlusal contact points.
키워드
Clear overlay retainer; Occlusal contacts; Settling
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