불소방출 레진의 합성과 충전된 치질내의 불소농도 변화에 관한 연구
SYNTHESIS OF FLUORIDE RELEASING RESIN AND FLUORIDE LEVEL CHANGES OF THE TOOTH STRUCTURE
박영준, 양홍서,
소속 상세정보
박영준 ( ) - 전남대학교
양홍서 ( ) - 전남대학교 치과대학 치과재료학교실
KMID : 0362219870140010035
Abstract
결론
복합레진은 치아와의 결합이 물리적인 결합에 의존하기 때문에 변연누출에 의한 충전물
주위의 이차 우식과 수복 후 치수과민 현상이 발생할 수 있는 큰 단점이 있다 .
된 연구는 우식예방 능력이 있는 불소가 충전물로부터 치아내로 유리되며 치아와 레진간
열팽창률의 차이를 줄일 수 있는 fp진을 제작하기 위해 시행되었다.
불소방출 단량체를 합성하여 적외선 분광분석적으로 확인한 후 이를 사용한 치과용 레진
을 제작, 치아에 충전하여 1개월 시효처리 후의 치질내 불소농도 변화를 x-선 광전자 스펙
트럼으로 분석하였다. 또한 실리카 filler의 표면을 γ-methacr-yloxypropyl
trimethoxysilane으로 코팅하여 복합레진을 제작한 후 filler의 표면처리 효과를 주사전자현
미경으로 관찰하였고, 레진기질내 ethyleneglycol dimethacrylate(EGDMA)의 함량을 29%,
17% 및 12% 무게비로 조절할 때 강도 및 열팽창계수를 만능물성 시험기와 열기 계적 분석
장치로써 관찰하여 다음과 같은 결론을 얻었다.
1. t-Butylaminoethanol을 triethylamine 존재하에서 methacryloyl chloride와 반응시켜
t-butylam-inoethyl methacrylate출 합성하였고, 합성된 반응생성물에 50% 불화수소 용액을
동일 mole량 적 가시킴으로써 t-butylaminoethyl methacrylate-HF salt를 합성하였다.
2. 불소레진 충전물 주변 치질내 불소농도가 크게 증가하였고 불소레진 충전물로부터 먼
부인일수록 불소농도 증가의 폭은 감소하였다.
3. Siane 처리 한 filler를 사용한 불고방출 복합레진의 파절면의 주사전자현미경상은 filler
와 레진기 질간이 분리되지 않은 상을 보이고, silane 처리가 안된 filler와 함께 제작한 시편
의 파절련은 filler와 레진기질이 분리된 상을 보였다.
4. EGDMA의 농도가 12%일때 가장 강도가 우수하였고(P<0.01), EGDMA의 함량변화와
강도간에는 상관관계가 있었다(P<0.05)
5. EGDMA의 함량이 증가함에 따라 열팽창계수는 감소하여 그 농도가 29% 일때 치아의
열팽창계수와 가장 유사하였다
#초록#
Adhesion between the resin and the tooth structure depends only on the mechanical
bonding. Thus, the susceptibility of the restored tooth to the secondary caries and to the
post operative sensitivity is a significant weakpoint of the dental composite resin.
This study was undertaken to synthesize the resin that releases the anti cariogenic
fluoride and reduces the marginal leakage.
Fluoride releasing monomer was synthesized and it was identified by the infra red
spectrophotometry.
The tooth was restored with the prepared dental resin containing the synthesized
monomer. After one month's aging treatment, the changes of the fluoride concentration
in the tooth structure were analysed with x-ray photoelectron spectroscopy.
The effectiveness of the surface treatment of the filler using γ-methacryloxypropyl
trimethoxysilane was evaluated with the scanning electron microscopy.
With the variation of the ethyleneglycol dimethacrylate (EGDMA) concentration in the
resin matrix phase, the strength and thermal expansion coefficient of the resins were
evaluated with the universal testing machine and the thermomechanical analyzer.
The results were as follows :
1. t-Butylaminoethyl methacrylate anion exchange resin was synthesized by the
reaction of the t-butylaminoethanol and methacryloyl chloride under the presence of the
triethylamine. Reacting of the equimolar 50% HF solution to the synthesized reaction
product produced the t-butylaminoethyl methacrylate HF salt.
2. Fluoride concentration in the tooth structure around the fluoride releasing resin
restoration was significantly increased, and the degree of the fluoride concentration
increase was decreased with the distance from the restoration.
3. The fractured surface of the fluoride releasing composite resin prepared with the
silane treated filler showed that the fillers are not separated from the resin matrix on
the SEM feature. On the other hand, the fractured surface of the specimen prepared
with the non silane treated filler showed that the silica-fillers are separated from the
resin matrix.
4. The strength of the composite resin containing 12% ethyleneglycol dimethacrylate
(EGDMA) in the matrix phase was greatest (p < 0.01), and the variation of the
EGDMA concentration was negatively correlated with the compressive strength
(r=0.3993, p<0.05).
5. The thermal expansion coefficients of the specimens were decreased as the
EGDMA concentration in the matrix phase increases form 12% to 29%, and the thermal
expansion coefficient of the resin was well matched with that of the tooth structure
When the EGDMA concentration in the matrix phase is 29%.
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