https://scholars.lib.ntu.edu.tw/handle/123456789/162630
標題: | 活動義齒之軟硬食咀嚼效率評估 | 作者: | 蕭裕源 | 關鍵字: | 口香糖咀嚼;咀嚼效率;頦皮膚貼片;口內夾具;部分義齒;Chewing gum chewing;Chewing efficiency;Dental clutch tracing;Chin marks;Free end denture | 公開日期: | 2003 | 出版社: | 臺北市:國立臺灣大學醫學院口腔生物科學研究所 | 摘要: | 咀嚼硬物時下顎運動及咀嚼速率已於本實 驗室及國外實驗室中充分研究過,而軟食 之咀嚼效率觀測法也已於前年度計畫中研 究過。這些研究成果都針對完整齒列者之 咀嚼功能,本次研究乃在於使用所創用之 含氫氧磷酸鈣(HA)口香糖塊研究完整及 缺牙後使用局部活動義齒者之口香糖咀嚼 效率。 參與之受測者為年齡自18 至25 歲無缺牙 且咀嚼肌無疼痛者14 人(7 男7 女),於咀 嚼口香糖塊30 次後,吐出做切片及觀察切 片X 光影像中HA 分布之均勻度為其咀嚼 效率。另外測取兩名單顎單測無後牙且裝 置合適活動義齒之男性病患2 人進行相同 實驗。由於在初步實驗中,發現觀測下顎 運動時帶著傳統牙齒夾具的義齒受測者有 較不穩定的觀測值,遂優先處理顎運動觀 測之矯正,比較皮膚上貼片法及口內夾具 法在觀測值上之差異。 結果發現,口內夾具觀測法在最大開口情 況時較頦上貼點之運動範圍小,但在下顎 運動速度方面率及咀嚼速率方面則無異。 帶夾具時口香糖咀嚼效率較僅有頦貼點之 咀嚼效率為差。同樣以頦貼點觀測時,戴 假牙者之咀嚼效率比有齒列者稍低,但並 不顯著。 關鍵詞:口香糖咀嚼,咀嚼效率,頦皮膚 貼片,口內夾具, 部分義齒。 The chewing efficiency of hard food mastication had been studied in our previous projects, and that of soft food chewing has also been intensively studied in our project of 2001. All the previous studies were on human subjects with complete dentition. The purpose of this study was to apply a hydroxyapatite(HA) containing chewing gum to observe the chewing efficiency of soft food in both complete dentition subjects and subjects with partial removable dentures. Fourteen young subjects (7 males and 7 females, aged from 18 to 25 years old) having complete dentition and healthy TMJ and facial muscles were observed. They were asked to chew an HA containing chewing gum block for 30 times. The gum boluses were then frozen and sectioned and the distribution the HA in a bolus section was observed and compared. Another 2 subjects having missing posterior teeth in one quardant and restored with a unilateral removable partial denture were also observed for comparison. In this report, dental clutch attachment and skin surface marks were applied on each subject during chewing observation. The comparison of measurement accuracy was compared first. It was found that tracing skin mark on the chin showed significantly wider opening range, while not in lateral movement and chewing rate. However, the gum chewing efficiency in subjects with dental clutch was not significantly lower than in subjects with chin marks only. In 30th chewing stroke, 50% HA homogeneity was found. The chewing efficiency of the denture wearers was significantly lower than that of natural 2 dentition subjects. Based on those findings, it can be concluded that dental clutch may affect the maximum jaw opening movement, but the lateral movement and rhythm and velocity of jaw movement are not affected. The preliminary results also showed that the stability of the denture is the key factor for gum chewing ability. The attachment of dental clutch on lower incisors might cause incomplete sealing of the lips during chewing, while it would not affect the ability of gum chewing significantly. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/22666 | 其他識別: | 912314B002165 | Rights: | 國立臺灣大學醫學院口腔生物科學研究所 |
顯示於: | 口腔生物科學研究所 |
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912314B002165.pdf | 102.96 kB | Adobe PDF | 檢視/開啟 |
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