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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

October 1990
Volume 21 , Issue 10

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Characterization of two small-particle composite resins.

Pintado, Maria R.

PMID: 2082416

The in vitro occlusal wear of two recently introduced, small-particle composite resins was evaluated. Twelve disks of each material were opposed by maxillary third molars and subjected to 300,000 masticatory cycles in a servohydraulic model of the human masticatory apparatus. Before and after profiles of the surfaces of both the disks and the teeth were mapped and digitally recorded on magnetic disks. P-50 disks showed significantly (P < .05) less volume loss than did Herculite disks. Enamel that opposed P-50 disks showed significantly (P < .001) more near than did enamel that opposed Herculite disks.

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