Leaching of additives and degradation products from cold-cured orthodontic resins

Authors

  • Henning Lygre Department of Dental Biomaterials, Department of Orthodontics and Facial Orthopedics, School of Dentistry, and Department of Clinical Biology, Section of Oral Pharmacology, School of Medicine, University of Bergen, Bergen, Norway
  • Knut N. Klepp Department of Dental Biomaterials, Department of Orthodontics and Facial Orthopedics, School of Dentistry, and Department of Clinical Biology, Section of Oral Pharmacology, School of Medicine, University of Bergen, Bergen, Norway
  • Einar Solheim Department of Dental Biomaterials, Department of Orthodontics and Facial Orthopedics, School of Dentistry, and Department of Clinical Biology, Section of Oral Pharmacology, School of Medicine, University of Bergen, Bergen, Norway
  • Nils Roar Gjerdet Department of Dental Biomaterials, Department of Orthodontics and Facial Orthopedics, School of Dentistry, and Department of Clinical Biology, Section of Oral Pharmacology, School of Medicine, University of Bergen, Bergen, Norway

DOI:

https://doi.org/10.3109/00016359409027589

Keywords:

Chemical analysis, cold-cured resins, saliva

Abstract

Unstimulated saliva was collected from orthodontic patients and subjected to combined gas-chromatography and gas-chromatography/mass-spectrometry analyses. Saliva was collected before insertion of removable orthodontic appliances made of cold-cured resins. Saliva was then collected 1-2 months after insertion of the appliances and 1 week after they had been removed. Phenyl benzoate (PB) and phenyl salicylate (PS) were identified in pooled saliva samples from patients wearing the appliances. Biphenyl and 2-methoxy-4-hydroxy-beilzo-phenone in addition to PB and PS were identified in a study with in vitro specimens made of orthodontic resin. The leaching of compounds from these test specimens processed by a powdering technique and a pre-mix technique was compared.

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Published

1994-01-01

Issue

Vol. 52 No. 3 (1994): Acta Odontologica Scandinavica

Section

Articles