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KMID : 0362319970220020702
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Journal of Korean Academy of Operative Dentistry
1997 Volume.22 No. 2 p.702 ~ p.709
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A COMPARATIVE STUDY ON MARGINAL LEAKAGE OF CAD/CAM-FABRICATED CERAMIC INLAY
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1조병훈/1Byeong Hoon Cho
1이명종/1손호현/2임미경/3이광원/1Myung Jong Lee/1Ho Hyun Son/2MI Kyung Im/3Kwang Won Lee
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Abstract
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To compare the marginal leakage of CAD/CAM-fabricated ceramic inlay, gold inlay
and amalgam, forty extracted caries-free premolars were prepared with Class II MO
cavity design. The teeth were divided into four groups of ten samples each. Group 1
was restored with CAD/CAM-fabricated ceramic inlays cemented with Scotchbond Resin
Cement / Scotchbond Multi-purpose plus. Group 2 was restored with gold inlays
cemented with Scotchbond Resin Cement / Scotchbond Multi-purpose plus. Group 3 was
restored with gold inlays cemented with zinc phosphate cement. And, Group 4 was
restored with amalgam. All samples were thermocycled. and stored in 1% methylene
blue. Marginal leakage was examined at four margins, that is, occlusal distal, priximal
gingival, occlusal facial and occlusal lingual margins from sectioned samples under
stereomicroscope(x15).
The results were as follows : 1. Group 1 and 2 showed no statistically significant
difference among marginal leakage at all four examined margins(p>0.05).
2. Group 3 and 4 showed significant marginal leakage at proxiaml gingival margin
compared with other margins(p<0.05).
3. Significantly increased marginal leakage at priximal gingival, occlusal facial and
occlusal lingual margins in group 3 were observed compared with other groups(p<0.05).
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