成犬의 象兒質 酸腐蝕이 齒隨에 미치는 影響 = Pulpal Response to Acid Etching on the Dentin of Dog's Tooth

다국어 초록 (Multilingual Abstract)

The purpose of this study was to evaluate the effect of 37% orthophosphoric acid on dog's dental pulp when the acid was applied to exposed dentin.
The experimental group was that the 37% orthophosphoric acid was applied to the dentin exposed by cavity preparation for 60, 90 seconds, and copalite and zinc phosphate cement were placed as temporary restorations. The control group received the same treatment, except saline solution instead of acid has placed on exposed dentin. The specimens were routinely prepared and stained by Hematoxylin-Eosin.
The results of this study were as follows:
The vacuolization, derangement of odontoblastic layer under prepared cavity and no definite formation of secondary dentin without definite difference in each interval was observed at the control group.
The formation of secondary dentin and thickening of the predentin were prominent in 60 sec. acid etching at 5 weeks, but were observed in 90 sec. acid etching group at 8 weeks.
Severe hemorrhage and reticular degeneration were observed in both 60 sec. and 90 sec. etching group at the early stage, but recovered gradually with the fibrous pupal tissue according to time elapse.