Aoki S, Ishikawa T
Tokyo Dental College.
Bull Tokyo Dent Coll. 1990 Nov;31(4):333-44.
This histopathological study investigated the pulp reaction to a restoration system employing a posterior composite resin with or without the pulp protection of visible light curing calcium hydroxide composition and alpha-TCP cement lining to dentin. Black's class V cavities were prepared in 120 adult dog teeth. They were then extracted for histological examination. As a result of this study, their lining materials were found to be effective in pulp protection. To understand the pathological finding, the pH values of "Fulfil", "Universal bond", "VLC Dycal" and "Vitacemen Type II" were measured. The pH levels of "Fulfil" and "Universal Bond" were mildly acidic (4.79-5.18) before polymerization, with no subsequent changes. "VLC Dycal" was initially a strongly alkaline (11.75) and remained this condition. "Vitacemen Type II" was initially acidic (3.78), but eventually reached the milder acidity of 5.12 after 24 hours.
这项组织病理学研究调查了牙髓对一种修复系统的反应，该修复系统采用了一种后牙复合树脂，有无可见光固化氢氧化钙组合物和α-TCP水门汀衬层对牙本质的牙髓保护作用。在120颗成年犬牙上制备了Black V类洞。然后将牙齿拔除进行组织学检查。这项研究的结果表明，它们的衬层材料在牙髓保护方面是有效的。为了解病理发现，测量了“Fulfil”“通用粘结剂”“可见光固化Dycal”和“Vitacemen II型”的pH值。“Fulfil”和“通用粘结剂”在聚合前呈弱酸性（4.79-5.18），之后无变化。“可见光固化Dycal”最初呈强碱性（11.75），并保持这一状态。“Vitacemen II型”最初呈酸性（3.78），但24小时后最终达到较弱酸性5.12。
