石膏模型與數位化模型在分析上的比較

Comparison of Analysis in Plaster and Digital Models

吳佳隆(Chia-Lung Wu) ； 張川陽(Chuan-Yang Chang) ； 陳彥廷(Yen-Ting Chen) ； 蔡明媛(Min-Ywan Tsai) ； 劉佳觀(Jia-Kuang Liu) ； 鄭國順(Kuo-Sheng Cheng)

《中華民國齒顎矯正學雜誌》 20卷1期 (2008/03) Pp. 11-15

https://doi.org/10.30036/TJO.200803.0002

摘要

Space analysis and Bolton's analysis are two important parts of the orthodontic diagnostic and treatment planning procedures for malocclusions. Measuring data from plaster models with boley gauge or vernier caliper is a traditional method. Due to recent technologic advance, the models are allowed to be digitized and measured with software tools. The purpose of this study was to compare the differences between measurements done by software tools (Winceph) on digital models and those done directly on plaster models. Twenty-five models were randomly selected from pretreatment patient models without any missing teeth. The digital models were scanned by scanner (4800 Scanner-ICE) and stored in the computer. Space analysis and Bolton's analysis were each repeated four times on both the plaster models and digital models respectively and the operating time were recorded too. The data were analyzed by t-test. The results showed that there were no significant differences between these 2 groups in the space analysis and ant ”6” ratio in the Bolton's analysis. The differences between these 2 groups in ant ”12” ratio in the Bolton's analysis and operating time were significant. So digital models might be acceptable for clinical use in the space analysis and it could reduce the operating time.

關鍵字

石膏模型 ； 數位化模型 ； 空間分析 ； 波頓牙齒比值分析

並列摘要

Space analysis and Bolton's analysis are two important parts of the orthodontic diagnostic and treatment planning procedures for malocclusions. Measuring data from plaster models with boley gauge or vernier caliper is a traditional method. Due to recent technologic advance, the models are allowed to be digitized and measured with software tools. The purpose of this study was to compare the differences between measurements done by software tools (Winceph) on digital models and those done directly on plaster models. Twenty-five models were randomly selected from pretreatment patient models without any missing teeth. The digital models were scanned by scanner (4800 Scanner-ICE) and stored in the computer. Space analysis and Bolton's analysis were each repeated four times on both the plaster models and digital models respectively and the operating time were recorded too. The data were analyzed by t-test. The results showed that there were no significant differences between these 2 groups in the space analysis and ant ”6” ratio in the Bolton's analysis. The differences between these 2 groups in ant ”12” ratio in the Bolton's analysis and operating time were significant. So digital models might be acceptable for clinical use in the space analysis and it could reduce the operating time.

並列關鍵字

plaster model ； digital model ； space analysis ； Bolton's analysis