Abstract
The purpose of this study was to evaluate the effectiveness of the lingual bladed tooth in the practical use. The questionnaires were then sent to 36 patients wearing complete dentures with lingual bladed teeth.
The following results were obtained through the answers received from 23 among 36 patients and several recalled patients:
1. The lingual bladed tooth seemed to be effective for mastication, especially excellent in ability of cutting food.
2. By wearing the denture with lingual bladed teeth, crushing type of foods such as a piece of hard buiscuit and okoshi (millet-and rice cake), and shearing type of foods such as kamaboko (a piece of boiled fish paste), a piece of raw cuttlefish and abalone became to be masticated more easily, but type of sticky foods such as zouni (rice-cakes boiled in soup) and a piece of chewinggum were little effective.
3. Lingual bladed teeth seemed to be most suitable when the setting position of artificial teeth were decided through a neutral-zone technique, because they were arranged by the linguali zed occlusion.
4. The lingual bladed tooth seemed to exhibit more effectiveness in such patients who had good alveolar ridges and were given stable occlusions.
5. In patients who had poor ridges and unstable occlusions, it seemed that the lingual bladed tooth should not be used because of more frequent soreness in the patients.
