PubMed · 5244261
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H Tschamer. 1968-07-16. [Root canal obturation].. https://pubmed.ncbi.nlm.nih.gov/5244261/
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Allergic reactions can develop to any of the drugs or materials commonly used in dentistry. They exhibit a broad range of clinical signs and symptoms ranging from mild, delayed reactions to immediate and life-threatening reactions developing within seconds. Allergies usually manifest themselves in reactions that are related to histamine release in one of three ways: skin reactions, respiratory problems and anaphylaxis. Anaphylaxis is the most critical allergic reaction in the dental environment. Measures such as airway management, oxygen supplementation, antihistamine, adrenaline and corticosteroid medication, cardiopulmonary resuscitation and evacuation to the emergency room, may be necessary.
Scanning acoustic microscopy (SAM) was used in the burst mode at 400 MHz, nominal lateral resolution 2.5 microm, to study the micromechanical properties of the dentin/adhesive interface. Corresponding specimens from the same tooth were investigated using mu Raman spectroscopy, light microscopy, and scanning electron microscopy.12 The elastic moduli of the components of the dentin/adhesive interface were determined by comparing the recorded acoustic impedance values to a calibration curve generated on standard materials. The standard materials, which include polypropylene, Teflon, PMMA, pyrex glass, aluminum, titanium, and stainless steel, provide the appropriate range of acoustic impedance values. The elastic moduli of the components of the dentin/adhesive interface are: partially demineralized dentin, 13 Gpa; mineralized dentin, 28 GPa; adhesive, 5.0 GPa; and unprotected protein at the interface < 2.0 GPa.
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