SATO KOICHI,佐藤浩一,NEGORO NORIYUKI,根來紀行,FUJII NORIHIRO,藤井法博
申请号：
JP2013034307
公开号：
JP2013135875A
申请日:
2013.02.25
申请国别(地区):
JP
年份:
2013
代理人:
摘要：
PROBLEM TO BE SOLVED: To provide an artificial tooth in which favorable handling properties in the arrangement can be established by clarifying the three-dimensional positional relationship between a cusp tip and a cavity and the contact areas thereof, the cusp tip and cavity being in contact with each other on an occlusal surface, in maxillary and mandibular artificial molar teeth opposing each other at the cusp tip and cavity.SOLUTION: In an artificial tooth serving as a mandibular first premolar having a buccal cusp tip, a lingual cusp tip, a mesial pit and a distal pit, the orientation with the origin at the distal pit, the ratio of the distances from the origin to a mesial surface, a distal surface, a buccal side surface and a lingual side surface, and the positional relationship between the cusp tip and the pit are appropriately set. In an artificial tooth serving as a maxillary first premolar having the buccal cusp tip, the lingual cusp tip, the mesial pit and the distal pit, the orientation with the origin at the lingual cusp tip, the ratio of the distances from the origin to the mesial surface, the distal surface, the buccal side surface and the lingual side surface, and the positional relationship between the cusp tip and the pit are appropriately set. Then, the distal pit of the artificial tooth serving as the mandibular first premolar is brought into contact with the lingual cusp tip of the artificial tooth serving as the maxillary first premolar. Moreover, the buccal cusp tip of the artificial tooth serving as the mandibular first premolar is brought into contact with the mesial pit of the artificial tooth serving as the maxillary first premolar.COPYRIGHT: (C)2013,JPO&INPIT【課題】咬頭頂と窩で対合する上下顎人工臼歯において、咬合面上の接触させるべき咬頭頂と窩の3次元的位置関係と接触領域を明確にすることにより排列の操作性の良い人工歯を提供する。【解決手段】頬側咬頭頂・舌側咬頭頂・近心小窩・遠心小窩を有する下顎第一小臼歯の人工歯において、遠心小窩を原点とする方位、原点から近心面、遠心面、頬側面、舌側面までの距離の比、及び喉頭と小窩の位置関係を適切に設定した。また、頬側咬頭頂・舌側咬頭頂・近心小窩・遠心小窩を有する上顎第一小臼歯の人工歯において、舌側咬頭頂を原点とする方位、原点から近心面、遠心面、頬側面、舌側面までの距離の比、及び喉頭と小
