A radiographic study of the effect of various retrograde fillings on periapical healing after replantation.
Endod Dent Traumatol
; 10(6): 276-81, 1994 Dec.
Article
em En
| MEDLINE
| ID: mdl-7867616
ABSTRACT
An effective retrograde sealing procedure places great demands upon both technique and materials. Prevention of micro-leakage, biocompatibility and stability of the material in the apical tissues are very important. To evaluate potential retrograde filling materials, a replantation model has been developed in which extracted permanent molars were replanted in monkeys after apicectomy of each root, preparation of a 2-mm deep retrograde cavity and its sealing with various dental materials. Prior to retro-filling the remaining pulp was exposed to saliva. Apicected molars which were infected and did not receive retrograde fillings served as positive controls. Periapical healing was evaluated radiographically after 8 weeks based on planimetric measurements of the size of the periapical radiolucency. The following dental materials were tested amalgam, glass ionomer cement, calcium-hydroxide lining cement, AH 26 root canal sealer, various zinc oxide-eugenol cements, Cavit, and gutta-percha with various sealers. The materials which were associated with better apical healing than the infected controls were glass ionomer cement, Cavit, and the zinc oxide-eugenol cements. When plain zinc oxide-eugenol or IRM were combined with a gutta-percha core, healing was best and not statistically different from normal apices. It was concluded that radiographic assessment at 8 weeks of molar teeth retrograde filled prior to replantation could be a valuable method for discrimination of potentially useful materials in vivo.
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Base de dados:
MEDLINE
Assunto principal:
Tecido Periapical
/
Obturação Retrógrada
/
Materiais Restauradores do Canal Radicular
/
Cicatrização
/
Resinas Epóxi
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Endod Dent Traumatol
Ano de publicação:
1994
Tipo de documento:
Article
País de afiliação:
Dinamarca