METHOD FOR ESTIMATING AND RESTORING CHANGED EDGE PORTION OF TOOTH BY SCANNING
To improve quality of scan data of a tooth.SOLUTION: A method according to the present invention includes the steps of: acquiring scan data of a tooth; drawing a closed edge line; deleting scan data of an edge portion of the tooth; arranging data in which a plurality of plates are arranged along the...
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Main Authors | , , |
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Format | Patent |
Language | English Japanese |
Published |
07.03.2024
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Subjects | |
Online Access | Get full text |
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Summary: | To improve quality of scan data of a tooth.SOLUTION: A method according to the present invention includes the steps of: acquiring scan data of a tooth; drawing a closed edge line; deleting scan data of an edge portion of the tooth; arranging data in which a plurality of plates are arranged along the edge line so as to overlap the scan data; creating first and second cross-sectional curves indicating a contour line of the scan data having therebetween a deleted portion in each of a cross section of scan data cut by the plurality of plates of the data; extending the first and second cross-sectional curves in a direction of compensating the scan data in the deleted portion in each of the cross section of the scan data cut by the plurality of plates of the data; and restoring the edge portion of the tooth on the basis of the extended first cross-sectional curve and the extended second cross-sectional curve in each of the cross section of the scan data cut by the plurality of plates of the data.SELECTED DRAWING: Figure 29
【課題】歯のスキャンデータの品質を向上させる。【解決手段】本発明に係る方法は、歯のスキャンデータを取得するステップ、閉じたエッジラインを描画するステップ、歯のエッジ部分のスキャンデータを削除するステップ、エッジラインに沿って複数の板が配置されたデータをスキャンデータに重ねて配置するステップ、データの複数の板によって切断されたスキャンデータの断面のそれぞれにおいて削除した部分を間に挟んでスキャンデータの外形ラインを示す第1及び第2断面曲線を作成するステップ、データの複数の板によって切断された前記スキャンデータの断面のそれぞれにおいて削除した部分のスキャンデータを補う方向に第1及び第2断面曲線を延長するステップ、データの複数の板によって切断されたスキャンデータの断面のそれぞれにおいて延長した第1断面曲線と延長した第2断面曲線とに基づいて歯のエッジ部分を復元するステップ、を含む。【選択図】図29 |
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Bibliography: | Application Number: JP20220134415 |