臺灣博碩士論文加值系統

研究背景及目的：
咀嚼無糖口香糖尤其是含木糖醇（xylitol）之口香糖，因可刺激唾液分泌，提升口腔酸鹼值抑制去礦化，促進牙齒再礦化，去除牙菌斑殘屑及減少牙菌斑堆積量減少牙齦炎發生，而成為另一種可考慮推行的替代性潔牙方法。本研究目的是探討餐後嚼食含木糖醇口香糖與刷牙移除牙菌斑效 果。
材料與方法：
研究對象為高雄市某國小低、中、高年級學童各70人。分為二組，一組為刷牙組，一組為嚼食口香糖組。 將兩組做牙菌斑指數比較及探討學童咀嚼口香糖是否有移除牙菌斑之效果，並了解牙菌斑移除效果之部位。使用O，Leary et al（1972） ：Plaque Control Record.（PCR）的方式檢測口腔內所有既存牙齒的牙菌斑指數，在學童餐後潔牙前先塗以顯示劑，檢測學童餐後潔牙前之牙菌斑，之後口香糖組給予每人一片含木糖醇口香糖嚼食十分鐘，刷牙組按常規刷牙，再予以檢查牙菌斑。以JMP統計套裝軟體進行資料統計分析。
結果：
本次受檢男生106人（50.78％）、女生104人（49.52％）；年級別則為低、中、高年級各占1/3（33.33％）。依移除牙菌斑效果而言，刷牙組比口香糖組好32.28±17.83,20.15±12.84，但嚼食口香糖仍有移除作用。性別方面男生與女生在刷牙組無顯著性差異 （p＝ 0.4116 ）， 但在口香糖組男生與女生有顯著差異（p＜0.0078 ）男生比女生好25.63±11.75,18.16±12.71。依年級而言刷牙組、口香糖組的移除牙菌斑效果有顯著差異刷牙組（p＜0.0001；口香糖組p＜0.0262 ）；刷牙組隨年級增加而有改善，低、中、高年級18.92±11.19,31.59±13.83,46.32±16.47，但口香糖組並不隨年級增加而有改善，低年級比高年級好，高年級比中年級好低、中、高年級21.15±12.10,15.64±11.74,23.67±13.62。口香糖組在全口舌側牙菌斑移除效果於各年級間有顯著性差異，全口頰側則無差異（全口牙舌側p＜0.0003；全口牙頰側p＝0.7250 ）
結論：
刷牙為移除牙菌班之最佳方法，但口香糖在舌側牙菌斑仍有不錯的移除效果，如果在出外旅遊時、潔牙時間、地點因有所限制無法正常執行潔牙步驟時，以透過嚼食含木糖醇口香糖來降低牙菌斑指數，不失為替代性潔牙方法。

Background and Purpose: Chewing xylitol chewing gum can prevent caries due to increase saliva secretion, increase pH value to inhibit demineralization, remove dental plaque and reduce gingivitis.The aim of this study was to evaluate the effect of reducing dental plaque by chewing xylitol chewing gum compared to that by brushing teeth after meals .
Material and Method：Three target groups were selected from primary, junior and senior grade in an elementary school. Each grade had 70 students and was divided into control and experimental group; one for brushing teeth and the other for chewing xylitol gum. Prior to oral examination, Red Code indicator was painted on teeth and the effect of reduction of dental plaque was evaluated by the “ O’Leary et al. (1972): Plaque Control Record (PCR)” method before and after meal; either by brushing teeth or chewing xylitol gum 10 minutes after meals. Then data were analyzed by JMP statistic soft ware.
Results: The number of target sampls consisted of 106 boys (50.78%) and 104 girls (49.52%) with an equal number of students selected from primary, junior and senior grades. The effect of removing dental plaque by brushing teeth was better than by chewing xylitol gum ( 32.28±17.83 and 20.15±12.84; respectively ), but the effect of chewing xylitol gum was still impressive. There was no statistical difference between genders in the brushing teeth group (p ＝0.4116). On the other hand, a significantly statistical difference was found in chewing gum group (p＜0.0078); boys had a better effect than girls ( 25.63±11.75 and 18.16±12.71; espectively ). The effect of reducing dental plaque either by brushing teeth or by chewing gum group showed significant differences as the grade goes higher (p＜0.0001 and p＜0.0262; respectively). A positive correlation indicated an improvement among primary, junior and senior students for the brushing teeth group (18.92±11.19 ,31.59±13.83 and 46.32±16.47; respectively). But there was no evidence of improvement among primary, junior and senior students for the chewing gum group ( 21.15±12.10, 15.64±11.74 and 23.67±13.62; respectively). Further-more, the effect of reducing dental plaque on both lingual sides showed significant differences among grades compared to dental plaque on buccal sides for chewing gum group (p value＜0.0003 and p ＝0.7250; respectively).
Conclusion: Brush teeth is the best way to reduce dental plaque . But still, chewing xylitol gum has an impressive effect in removing dental plaque on lingual sides. When traveling in a situation, not in proper time or confined to a location that makes oral care maintenance impossible, chewing xylitol gum to reduce dental plaque is a possible option.

目 錄
頁次
致謝……………………………………………………………… i
中文摘要…………………………………………………………ii
英文摘要…………………………………………………………iv
第一章 緒論
第一節 研究背景………………………………………………1
第二節 研究目的………………………………………………3
第二章 文獻探討
第一節 嚼食口香糖防治齲齒相關文獻………………………4
第二節 文獻綜合結論…………………………………………10
第三章 材料與方法
第一節 研究對象………………………………………………12
第二節 研究設計………………………………………………12
第三節 研究架構………………………………………………17
第四節 資料統計分析…………………………………………18
第四章 結果
第一節 社會人口學基本資料…………………………………19
第二節 前測牙菌斑移除效……………………………………19
第三節 刷牙前後與嚼食口香糖前後牙菌班指數移除效……21
第四節 性別與刷牙及嚼食口香糖牙菌班指數移除效果……23
第五節 年級別與刷牙及嚼食口香糖牙菌班指數移除效果
.…………………………………………………………………26
第五章 討論
第一節 刷牙前後與嚼食口香糖前後牙菌班指數移除效果分析
…………………………………………………………………31
第二節 性別與刷牙及嚼食口香糖牙菌班指數移除效果……32
第三節 級別與刷牙及嚼食口香糖牙菌班指數移除…………32第六章 結論與建議……………………………………………34
參考文獻 …………………………………………………………36
中文表格目錄 ……………………………………………………39
圖表 ………………………………………………………………51
英文表格目錄 ……………………………………………………53

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