Experimental studies on Gingival Response to Dental Restorations.

각종(各種) 금속치관(金屬齒冠)이 치간(齒齦)에 미치는 영향(影響)에 관(關)한 실질적(實驗的) 연구(硏究)

The purpose of this study was to determine the gingival response to the various restorations for 3 weeks, 5 weeks and 8 weeks respectively after they had been inserted in 36 tooth of 3 dogs. The histopathological observation was also performed to evaluate the effect of the various restorations on gingival tissue. They included gold, copper and nickel-chrome alloy. The following findings were obtained. 1. The gingivae adjacent to the well adapted and polished restorations and their margins with a level of gingival crest were grossly and histopathologically found no specific changes. 2. The gingive adjacent to the ill fitting and unpolished restorations and their margins with subgingival extension of 1 to 1.5mm were not grossly found any changes. 3. There were no obvious difference in gingival response among the various alloys in histopathological observation.