薄型の歯科用磁性アタッチメントの開発  [in Japanese] Development of a Thin Dental Magnetic Attachment with a Capped Magnetic Circuit  [in Japanese]

A dental magnetic attachment is a unique denture retainer applicable to teeth in poor condition. Miniaturization of these attachments has made remarkable progress through improvement of the magnetic circuit since 1992, when they were developed in Japan. There are two kinds of magnetic circuit, called the capped type and the sandwiched type, whose relative merits are disputed. This study concluds the duspute by showing that the capped type is superior, with a height of less than 1.5mm. In line with this conclusion, an advanced thin magnaetic attachment with a capped magnetic circuit was successfully designed to have a diameter of 4.4mm and a height of 1.3mm with an attractive force of 8 N. It is well suited to molar teeth.