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Histopathologic Evaluation of three Ultraviolet‐Activated Composite Resins on Monkey pulps
Author(s) -
Heys R. J.,
Heys D. R.,
Cox C. F.,
Avery J. K.
Publication year - 1977
Publication title -
journal of oral pathology and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 83
eISSN - 1600-0714
pISSN - 0904-2512
DOI - 10.1111/j.1600-0714.1977.tb01797.x
Subject(s) - pulp (tooth) , dentin , dentistry , inflammatory response , odontoblast , dentinal tubule , medicine , posterior teeth , vacuolization , ultraviolet light , endodontics , chemistry , pathology , inflammation , photochemistry
. The pulpal responses of three ultraviolet‐activated composite resins, Nuva‐Fil®, Experimental UV #1® and Experimental UV #2®, were tested on adult monkey teeth using silicate and zinc oxide eugenol (ZOE) as positive and negative controls. All materials were placed in Class V cavity preparations in Rhesus monkey teeth using approximately 48 anterior and 63 posterior teeth of both the maxillary and mandibular arches. A total of 111 teeth were utilized and all materials were evaluated at 3 days, 5 and 8 weeks. Following left ventricular perfusion, the teeth were prepared for microscopic evaluation using routine histological procedures. The 3‐day pulpal response of all the ultraviolet‐activated composites was slight with some disruption and vacuolization in the odontoblastic layer and a slight inflammatory response. At 5 weeks there was a reduction of the inflammatory response and the formation of reparative dentin was noted for all ultraviolet composites. The 8‐week pulp response was slight, characterized by a minimal inflammatory response adjacent to the zone of reparative dentin. Generally, ZOE produced the mildest response while silicate produced the most severe response at the three time intervals.