Histo-pathological study of pulp response to a composite resin restoration with two lining materials.
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.
Aoki
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S
Tokyo Dental College.
Ishikawa
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T
D000269:Adhesives; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate; D002126:Calcium Hydroxide; D002130:Calcium Phosphates; D003188:Composite Resins; D003736:Dental Cavity Lining / Q000379:methods*; D003782:Dental Pulp / Q000187:drug effects* / Q000382:microbiology; D017220:Dentin-Bonding Agents; D004285:Dogs; D006863:Hydrogen-Ion Concentration; D008903:Minerals; D011109:Polymethacrylic Acids; D011140:Polyurethanes; D019279:Resin Cements
D000269:Adhesives; D002130:Calcium Phosphates; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008903:Minerals; D011109:Polymethacrylic Acids; D011140:Polyurethanes; D019279:Resin Cements; C072676:Vitacemen Type II; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C062652:Prisma Universal Bond; D017438:Bisphenol A-Glycidyl Methacrylate; C025702:Dycal; C485838:calcium phosphate, monobasic, anhydrous; C046503:formula F 70; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous; D002126:Calcium Hydroxide