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Consequences of crown fractures with pulpal exposure: histopathological evaluation in dogs
Author(s) -
HarránPonce Elías,
Holland Roberto,
BarreiroLois Andrés,
LópezBeceiro Ana María,
PereiraEspinel José Luis
Publication year - 2002
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1034/j.1600-9657.2002.00075.x
Subject(s) - crown (dentistry) , pulp (tooth) , medicine , dentistry , histopathological examination , inflammation , histopathology , pulpitis , tooth fracture , pathology
– When a crown fracture involving pulpal exposure is produced, the therapeutic treatment to be applied depends to a great extent on the general histopathological condition of the exposed pulp. Hence, the objective of this study was to evaluate histopathological and bacteriological changes occurring in dental tissue and periradicular tissue of crown‐fractured teeth with pulpal exposure. Twenty‐four anterior teeth (central and lateral incisors) from the maxillary teeth of four young, adult Mongrel dogs were used. At 48 and 72 h after performing the crown fractures, the animals were sacrificed and the results evaluated. Both observation periods revealed the existence of an area of superficial inflammation with the formation of hyperplastic tissue towards the external surface. Intense neutrophilic infiltrate was observed below it. Mean depth of inflammation was greater at 48 h (4633.33 µm) than at 72 h (3933.33 µm), perhaps coinciding with the bigger pulp chamber opening (×1332.14 µm at 48 h vs. ×479.52 µm at 72 h). Upon approaching the cervical portion, the inflammation became less. Bacterial contamination was constant in all the cases evaluated, worsening the histopathological findings with exposure time. This study demonstrates that when a crown fracture with pulpal exposure is produced, the success in treating it depends partly on how quickly therapeutic treatment is administered.