불소이온도입법에 의한 불소도포가 교정용 브라켓 인접 치면의 재석회화에 미치는 영향
The Effect of Fluoride Application by Fluoride lontoporesis on Enamel Rcmincralization around Orthodontic Bracket in vivo
송승달, 조구형, 송미연, 곽동호,
소속 상세정보
송승달 ( ) - 경북대학교 치과대학 교정학교실
조구형 ( ) - 경북대학교 치과대학 교정학교실
송미연 ( ) - 경북대학교 치과대학 교정학교실
곽동호 ( ) - 경북대학교 치과대학 예방치과학교실
KMID : 0355419970210040621
Abstract
The purpose of this study was to evaluate the ability of fluoride by means of fluoride iontophoresis to inhibit or reverse orthodontically related demineralization. Twelve orthodontic patients (12-16 years old) scheduled to have premolars extracted were randomly divided into two groups - fluoride one application and fluoride two application groups. The premolars (44 teeth) were bracketed using an acid-etch composite system; each patient was given precise oral hygiene instruction and supplied with an orthodontic toothbrush and nonfluoride containing toothpaste. 2.0% Sodium fluoride solution was applyed for 5 minutes by means of fluoride iontophoresis equipment. Fluoride 1 group received only one application of fluoride on the upper and lower premolars on one side, and the premolars of the other side were control 1. Fluoride 2 group received fluoride application two times at one week intervals on one side premolars and. the other side was adapted as control 2. All premolars were extracted after 4 weeks. Each tooth was sectioned, embedded in unsaturated polyester arid polished with silicon carbide paper (#1200 mesh). The slabs were tested using the Vicker´s microhardness tester (MXT- a 7) at three points from bracket base.
Results showed that the Vicker´s hardness numbers were higher in both fluoride 1 and fluoride 2 groups compared with the control groups (p<0.05). Surface microhardness values were smaller closer to the bracket base (p<0.05). Fluoride 2 group showed higher hardness value increases compared with the fluoride 1 group, but there was no statistically significant difference (p>0.05).
It was concluded that (1) measurable demineralization occurred around an orthodontic attachment after only 4 weeks and (2) this demineralization can be effectively inhibited and/or reversed by the use of fluoride iontophoresis.
키워드
불소인온도입법;교정용 브라켓;인접치면;재석회화
원문 및 링크아웃 정보
등재저널 정보