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Acidulated phosphate fluoride에 의한 치면열구전색제의 미세 표면 변화

Other Titles
 Changes in the microsurface of sealant caused by Acidulated phosphate fluoride 
Authors
 한윤범 
Issue Date
2009
Description
치의학과/석사
Abstract
[한글]

치면열구전색제와 불소 제재는 치아우식증을 예방하는데 그 효능이 입증되었으며, 보다 효과적으로 치아우식증을 예방하기 위해서 흔히 병용된다. 최근에는 치면열구전색제의 물리적인 성질을 개선하기 위하여 filler를 첨가하여 사용하고 있다. 그러나, 산성 불소 제재가 filler를 포함하고 있는 치면열구전색제의 표면 양상을 변화시킬 수 있으며, 이는 미생물이 서식할 조건을 형성하여 전색제의 변색 및 탈락, 이차 우식을 야기하고, 전색제의 수명을 단축시켜서 치아우식증의 예방 효과가 감소될 수 있다. 이번 연구는 산성 불소 제재인 acidulated phosphate fluoride가 치면열구전색제의 표면 구조에 미치는 영향을 평가하기 위하여, filled형과 unfilled형 치면열구전색제에 APF를 적용하지 않은 대조군과 APF를 1분, 4분, 10분 간 적용한 실험군으로 분류하여, 불소 적용 후의 무게와 표면 거칠기 변화를 측정하였고, 주사전자현미경을 이용하여 표면 구조의 변화를 관찰하여 다음과 같은 결론을 얻었다. 1.Filled형 치면열구전색제에 1.23% APF gel을 1분, 4분, 10분 간 적용한 실험군에서 대조군에 비하여 무게가 감소하였고 표면 거칠기는 높아졌으며 통계학적으로 유의성이 있었다(P<0.05). 그러나, 실험군 간의 무게 및 표면거칠기는 차이가 없었으며 통계학적으로 유의성이 없었다. 2.Unfilled형 치면열구전색제에 1.23% APF gel을 적용한 실험군과 대조군 간의 무게 및 표면거칠기는 차이가 없었다. 3.주사전자현미경 소견에서, filled형 치면열구전색제는 대조군에 비하여 APF을 적용한 실험군에서 거친 다공성의 표면이 관찰되었다. 그러나, unfilled형 치면열구전색제는 실험군과 대조군 간의 표면 변화에 차이가 없었다. 이상의 결과로, 치아 우식증을 예방하기 위하여 산성 불소 제재와 filled형 치면열구전색제를 병용할 경우 전색제의 표면 변화를 야기할 수 있고 변색 및 탈락, 이차 우식 등이 발생할 수 있으며, 이는 치아 우식증의 예방 효과를 저하시킬 수 있으므로 불소 제재와 치면열구전색제를 병용할 경우 임상적으로 주의해야 할 것으로 사료된다.





[영문]Sealants and topical fluorides are known for their preventive effects of dental caries, and they are frequently used together to enhance the effects of caries prevention. Recently, filler particles have been included to improve the physical properties of sealants. However, application of acidic fluorides, such as acidulated phosphate fluoride(APF), to filled sealant may cause changes on the microsurface of sealant, resulting in conditions favorable for bacterial inhalation. These surface changes may lead to discoloration, secondary dental caries, or even dropout of sealant, decreasing its longevity and reducing its preventive effectiveness. The purpose of this study was to evaluate the changes on the microsurface of sealant caused by the application of acidulated phosphate fluoride. Filled sealant and unfilled sealant were used, and each was divided into control group and three experimental groups. Three experimental groups of filled sealant and unfilled sealant specimens were immersed in APF gel for 1, 4, and 10 minutes, respectively, while the control groups were not immersed. Then, weight loss of each specimen and changes on the surface roughness were measured, and each specimen was examined under the scanning electron microscope. The results of this study were as follows: 1.In filled sealant groups, there was significant weight loss and increased surface roughness in experimental groups, which were immersed in APF gel for 1, 4, and 10 minutes, compared to the control group(P<0.05). However, there was no statistical difference among the experimental groups. 2.In unfilled sealant groups, there was no significant difference in weight loss and surface roughness between the control group and experimental groups after the application of APF. 3.Under the scanning electron microscope, more rough and porous surface was observed in the experimental groups of the filled sealant compared to its control group. In contrast, the surface of the control and experimental groups of unfilled sealant presented similar roughness and porosity. Based on these results, we could conclude that combined use of filled sealant and acidic topical fluorides may cause changes on the microsurface of sealant, which can lead to discoloration or dropout of sealant and secondary dental caries, decreasing their preventive effects of dental caries. Therefore, special cares need to be given in clinics, when sealant and acidic fluoride are to be used together for preventive purpose.
Files in This Item:
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 2. Thesis
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/124705
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