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Reinforcing effect of a resin glass ionomer in the restoration of immature roots in vitro
Author(s) -
Goldberg Fernando,
Kaplan Andrea,
Roitman Marcela,
Manfré Susana,
Picca Mariana
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.1600-9657.2002.00083.x
Subject(s) - glass ionomer cement , dentistry , apexification , maxillary central incisor , root canal , crown (dentistry) , universal testing machine , materials science , significant difference , gutta percha , orthodontics , medicine , composite material , ultimate tensile strength
– Fifty‐six extracted maxillary central incisors were used for this study. The crown of each tooth was removed in order to obtain a standard length of 13 mm. Root canals were enlarged to simulate immature teeth after apexification. The apical 2 mm of the root canal was obturated with gutta‐percha and AH26 sealer. The specimens were divided into two groups. Group A was unrestored and served as positive control. In group B, the canal walls were reinforced with a resin modified glass ionomer using a translucent curing post. All teeth were subjected to compressive force using an Instron testing machine until fracture occurred. Group B showed an increased resistance to fracture (456.02 ± 172.47 N) compared with group A (263.46 ± 98.00 N). The difference between groups was statistically significant ( P < 0.005).