Evaluating Measurements: A Comparative Study of Digital and Plaster Models for Orthodontic Applications in Mixed Dentition
신서영, 채용권, 이고은, 김미선, 남옥형, 이효설, 최성철,
소속 상세정보
신서영 ( Shin Seo-Young ) -
채용권 ( Chae Yong-Kwon ) -
이고은 ( Lee Ko-Eun ) -
김미선 ( Kim Mi-Sun ) - Kyung Hee University School of Dentistry Department of Pediatric Dentistry
남옥형 ( Nam Ok-Hyung ) -
이효설 ( Lee Hyo-Seol ) -
최성철 ( Choi Sung-Chul ) -
Abstract
This study aimed to assess the accuracy of tooth widths, intermolar widths, and arch lengths acquired through two intraoral scanners, including iTero Element Plus Series (Align Technology, Santa Clara, CA, USA) and Trios 4 (3Shape, Copenhagen, Denmark), specifically on mixed dentition. A total of 30 subjects were divided into 2 groups, each undergoing both alginate impressions and intraoral scanning using either the iTero or Trios scanner. The plaster models were measured with a caliper, while the digital models were measured virtually. In the iTero group, all tooth width measurements exhibited differences compared to the plaster values, except for maxillary left lateral incisors (p = 0.179), mandibular right (p = 0.285), and left (p = 0.073) central incisors. The Trios group did not display significant differences in any of the tooth width measurements. Intermolar width comparisons for both groups indicated differences, except for mandibular primary canine to primary canine values (p = 0.426) in the iTero group. Regarding arch length, the mandibular anterior, maxillary right, and left arch lengths in the iTero group demonstrated larger caliper values than those of iTero. Conversely, in the Trios group, all parameters showed smaller caliper values, especially in upper anterior, maxillary right, mandibular right, and mandibular left arch lengths with significance (p = 0.027, 0.007, 0.003, and 0.047, respectively). Despite the differences between the two groups, digital models might be clinically suitable alternatives for plaster models. Pediatric dentists should carefully assess these differences, as a comprehensive evaluation would result in precise orthodontic treatment planning and favorable outcomes for young patients with mixed dentition.
키워드
Intraoral scanned digital model; Caliper measurement; Digital measurement; Tooth width; Intermolar width; Arch length
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