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The effect of pulp capping and pulpotomy on hard tissue bridges of contaminated pulps
Author(s) -
HEIDE S.
Publication year - 1991
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/j.1365-2591.1991.tb00118.x
Subject(s) - pulpotomy , pulp capping , pulp (tooth) , hard tissue , dentistry , contamination , materials science , pulp and paper industry , medicine , engineering , biology , ecology
Summary. The pulp and dentine of permanent incisors in 13 young monkeys were exposed by grinding. The pulpat perforations were treated by partial pulpotomy with a tungsten carbide fissure bur after exposure for 4, 48, or 168 hours in nine animals, and by direct pulp capping after exposure for 4 or 48 hours in the remaining four animals. After haemostasis, the pulpal wounds were covered with calcium hydroxide (Dycal), followed by conventional amalgam (Revalloy). Initial and subsequent formation of hard tissue bridges over the wounds was studied by conventional histology after 1–6 months. Screening showed three categories of initial bridging development, differing in nature and rate of formation. A significant difference in the distribution of the two main categories was found between the two methods of treatment( P <0.02). A similar difference was observed when partial pulpotomy was performed after 168 hours compared with that performed after 4 hours ( P =0.055). No relationship was found between the initial bridging category and the eventual development of complete dentine bridges.