| 固定矫治器粘结前后牙齿颊面菌斑pH值和变形链球菌附着的改变 |
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| 引用本文： | 潘一春,张丁,傅民魁. 固定矫治器粘结前后牙齿颊面菌斑pH值和变形链球菌附着的改变[J]. 口腔正畸学, 2003, 10(1): 23-26 |
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| 作者姓名： | 潘一春 张丁 傅民魁 |
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| 作者单位： | 100081,北京大学口腔医院正畸科 |
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| 摘 要： | 目的对固定矫治器粘结前后牙颊面菌斑pH值和变形链球菌附着量、比例进行研究,初步探讨固定矫治中菌斑微生态的变化。方法应用离子选择性微电极测定菌斑提取液的pH值,对变形链球菌和总厌氧菌进行培养,记数。结果固定矫治器粘结后牙面菌斑pH值有极显著的下降(p<0.001),粘结一周后下降了0.5,三周后下降了0.7。菌斑湿重在粘结后三周有显著增多(p<0.05)。变形链球菌附着量、比例有极显著的升高(p<0.001)。粘结后一周,变形链球菌的数目平均上升了8.85×1011CFU/g;粘结后三周,平均上升了4.20×1011CFU/g,比例增加了1.10％。结论固定矫治器粘结后颊面菌斑的致龋性增强,但并未转化为致龋性菌斑。固定正畸与龋易感性的关系有待进一步研究。
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| 关 键 词： | 固定矫治器 牙菌斑pH值 变形链球菌 |
| 修稿时间： | 2002-09-05 |
A study of pH and streptococcus mutans concentration changes in buccal plaque before and after fixed appliance bonding |
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| Pan Yichun,Zhang Ding,Fu Minkui. A study of pH and streptococcus mutans concentration changes in buccal plaque before and after fixed appliance bonding[J]. Chinese Journal of Orthodontics, 2003, 10(1): 23-26 |
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| Authors: | Pan Yichun Zhang Ding Fu Minkui |
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| Affiliation: | Pan Yichun,Zhang Ding,Fu MinkuiDepartment of Orthodontics,Peking University School of Stomatology,Bei jing 100081 |
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| Abstract: | The purpose of this study was to evaluate the changes in pH, microbial populations of streptococcus mutans before and after bonding. Thirty patients undergoing fixed appliance treatment were observed. The ion-selected microelectrode was used to measure pH. S. mutans and total anaerobic bacteria were cultured anaerobically. Statistically significant decrease of plaque pH and increases of the number and the percentage of S. mutans after bonding were noted. The finding suggested that the caries-associated capability of the plaque was increased after bonding, while it was still within the normal range. And the future improvement on the relationship of orthodontic treatment should be made. |
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| Keywords: | Fixed appliance Plaque pH Streptococcus mutans |
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