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KMID : 0362420230610040344
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Journal of Korean Academy of Prosthodontics
2023 Volume.61 No. 4 p.344 ~ p.355
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A comparative study of impression methods using stock tray and intraoral scanner in a completely edentulous patient with an atypical arch shape: a case report
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Park Jae-Hoon
Kim Ji-Hyun
Seo Jae-Min
Lee Jung-Jin
Park Yeon-Hee
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Abstract
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In complete denture fabrication, accurate preliminary impressions are crucial for obtaining an accurate final impression. However, it can be challenging in cases of atypical arch shapes. This case report compares diagnostic casts made with a stock tray and an intraoral scanner (IOS) in a patient with an atypical arch shape. A 58-year-old edentulous male patient with long, narrow, atypical arches was referred to the Oral and Maxillofacial Surgery department for complete denture fabrication. Compared to the diagnostic cast obtained using IOS with adequately captured anatomical parameters, the primary model obtained using a stock tray showed prominent overextended flanges on the labial and buccal sides of the maxillary arch and less prominent overextended flanges in the mandibular arch with pressure spots in the posterior palatal seal area. The custom tray fabricated from such a model required additional adjustment resulting in increased chair time during the final impression procedure.
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KEYWORD
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디지털 인상채득, 무치악궁, 예비 인상채득, 총의치, 3차원 (3D) 분석
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