중합방법이 다른 의치상 레진의 적합도 평가
Evaluation of the Accuracy of Denture Base Resin Cured by Different Processing Methods
소속 상세정보
이상건/Sang Gun Lee
송윤관/송광엽/이상건/송윤관/송광엽/Yun Gwan Song/Kwang Yeob Song/Sang Gun Lee/Yun Gwan Song/Kwang Yeob Song
KMID : 0362219990260030237
Abstract
결론
상악 무치악 유사모형에 제작된 40개의 납의치를 네가지 중합방법으로 중합하여 얻은 의
치상을 후방구개 폐쇄부의 중앙에서 의치상과 모형의 적합도를 비교하여 다음과 같은 결과
를 얻었다.
1. 취출 후의 크기 변화는 conventional heat-compression molding 방법이 가장 크고,
polycarbonate를 이용한 sulfone system, continuous-pressure injection 방법, microwave 중
합방법 순으로 작았고, conventional heat-compression molding 방법과 microwave 중합방
법 사이에 통계적으로 유의한 차가 있었다(p<0.05).
2. 연마가 완료된 후의 크기 변화는 conventional heat-compression molding 방법이 가장
크고, polycarbonate를 이용한 sulfone system, microwave 중합방법, continuous-pressure
injection 방법순으로 작았고, conventional heat-compression molding 방법과
continuous-ressure injection 방법사이에 통계적으로 유의한 차가 있었다(p<0.05).
3. 취출 후와 연마가 완료된 후의 크기 변화에 대한 paired sample t-test결과
continuous-pressure injection 방법을 제외한 나머지 3가지 방법에서 모두 통계적으로 유의
한 차가 있었다(p<0.05).
#초록#
In addition to continuing the search for more accurate and dimensionally stable
materials for denture bases, recently several processing methods for denture base resins
which may reduce dimensional change during fabrication has been developed.
The purpose of this study was to compare the dimensional accuracy of denture bases
cured by four denture base processing methods, using the conventional heat-compression
molding method, the continuous-pressure injection method, the microwave curing
processing method, and the Sulfone system.
A metal die simulating a maxillary edentulous arch and a polyvinylsiloxane impression
(Reprosil, L. D. Caulk Co. U.S.A.) were used to construct 40 simulated master casts and
denture bases with artificial teeth. Forty simulated denture bases 3 to 4㎜ thick were
processed by four denture base processing methods following the manufacturer's
instructions.
The processed denture bases and casts sectioned through the posterior palatal region
to allow measurement of its change by means of an travelling microscope. Observations
were made on center of posterior palatal sectioned region.
One-way ANOVA and paired samples t-tests were employed to compare the
differences in distortion after deflasking and after finishing and polishing.
The obtained results were as follows;
1. After deflasking, dimensional changes were diminished in order of conventional
heat-compression molding method, Sulfone system, continuous-pressure injection method,
microwave processing method. The significant difference was found between
conventional heat-compression molding method and microwave processing
method(p<0.05).
2. After finishing and polishing, dimensional changes were diminished in order of
conventional heat-compression molding method, Sulfone system, microwave processing
method, continuous-pressure injection method. The significant difference was found
between conventional heat-compression molding method and continuous-pressure
injection method(p<0.05).
3. The significant difference was found between after deflasking and after polishing in
all methods, except continuous-pressure injection method(p<0.05).
키워드
accuracy; denture base resin; processing methods;
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