跳转至内容
Merck
  • Leaching of additives and degradation products from cold-cured orthodontic resins.

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

Acta odontologica Scandinavica (1994-06-01)
H Lygre, K N Klepp, E Solheim, N R Gjerdet
摘要

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-benzophenone 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.

材料
货号
品牌
产品描述

Sigma-Aldrich
联苯-4-羧酸, 95%
Sigma-Aldrich
水杨酸苯酯, ReagentPlus®, 99%
Sigma-Aldrich
水杨酸苯酯, ≥99%, FG
Supelco
水杨酸苯酯熔点标准品, Pharmaceutical Secondary Standard; Certified Reference Material
Supelco
Mettler-Toledo 校准物质 ME 30034252,水杨酸苯酯, traceable to primary standards