Dental and Medical Problems

Dent Med Probl
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ISSN 1644-387X (print)
ISSN 2300-9020 (online)
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Dental and Medical Problems

2012, vol. 49, nr 4, October-December, p. 487–494

Publication type: editorial article

Language: English

The Methods and Metering Equipment Used for Evaluating the Effectiveness of the Photopolymerization Process

Metody i urządzenia pomiarowe oceniające skuteczność procesu fotopolimeryzacji

Elżbieta Jodkowska1,A-F

1 Department of Conservative, Dentistry Medical University of Warsaw, Poland

Abstract

The apparatus emitting polymerizing light has been developed concurrently with the modernisation and the improvement of composite materials. Polymerization lamps differ from each other in many respects depending on the course of photopolymerization process. This process is influenced by many factors such as: the monomer’s structure and functionality, composition and properties of resins, the temperature of the reaction, the presence of the oxygen, viscosity etc. The intensity of the light of photopolymerization lamps gradually decreases so it should be checked with the special metering equipment: radiometers, testers fixed in polymerization lamps, thermopiles. Devices evaluating the polymerization process can assess, for example, remains of unreacted form of the monomer and real-time physicochemical changes: loss of function groups responsible for polymerization, photocrosslinking, polimerization shrinkage, index of light refraction.

Streszczenie

Wraz z modernizacją i doskonaleniem materiałów złożonych produkuje się coraz lepsze urządzenia emitujące światło, czyli lampy polimeryzacyjne. Lampy polimeryzacyjne różnią się między sobą wieloma cechami. Cechy te decydują o przebiegu procesu fotopolimeryzacji, który zależy od wielu czynników, takich jak: struktura monomeru i jego funkcyjność, skład i właściwości żywic, temperatura reakcji, obecność tlenu, lepkość itp. Intensywność światła lamp polimeryzacyjnych stale się zwiększa, należy je sprawdzać za pomocą specjalnych urządzeń pomiarowych, takich jak: radiometry, testery wmontowane w lampy polimeryzacyjne, termostosy. Do oceny procesu fotopolimeryzacyjnego służą urządzenia określające np.: pozostałości nieprzereagowanego monomeru, monitorowanie w czasie rzeczywistym zmian fizykochemicznych, np. zaniku grup funkcyjnych odpowiedzialnych za polimeryzację, przebieg procesu fotosieciowania, pomiar skurczu polimeryzacyjnego, pomiar zmian współczynnika załamania światła.

Key words

photopolymerization, curing lamps, light intensity, measuring instruments, test methods of the photopolymerization process

Słowa kluczowe

fotopolimeryzacja, lampy polimeryzacyjne, intensywność światła, urządzenia pomiarowe, metody badania procesu fotopolimeryzacji

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