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Transmission of Curing Light through Moist, Air-Dried, and EDTA Treated Dentine and Enamel
المؤلفون المشاركون
Varrela, Juha
Lassila, Lippo V. J.
Uusitalo, E.
Vallittu, Pekka K.
المصدر
العدد
المجلد 2016، العدد 2016 (31 ديسمبر/كانون الأول 2016)، ص ص. 1-6، 6ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2016-06-30
دولة النشر
مصر
عدد الصفحات
6
التخصصات الرئيسية
الملخص EN
Objective.
This study measured light transmission through enamel and dentin and the effect of exposed dentinal tubules to light propagation.
Methods.
Light attenuation through enamel and dentin layers of various thicknesses (1 mm, 2 mm, 3 mm, and 4 mm) was measured using specimens that were (1) moist and (2) air-dried ( n = 5 ).
Measurements were repeated after the specimens were treated with EDTA.
Specimens were transilluminated with a light curing unit (maximum power output 1869 mW/cm2), and the mean irradiance power of transmitting light was measured.
The transmission of light through teeth was studied using 10 extracted intact human incisors and premolars.
Results.
Transmitted light irradiance through 1 mm thick moist discs was 500 mW/cm2 for enamel and 398 mW/cm2 for dentin ( p < 0.05 ).
The increase of the specimen thickness decreased light transmission in all groups ( p < 0.005 ), and moist specimens attenuated light less than air-dried specimens in all thicknesses ( p < 0.05 ).
EDTA treatment increased light transmission from 398 mW/cm2 to 439 mW/cm2 (1 mm dentin specimen thickness) ( p < 0.05 ).
Light transmission through intact premolar was 6.2 mW/cm2 (average thickness 8.2 mm) and through incisor was 37.6 mW/cm2 (average thickness 5.6 mm).
Conclusion.
Light transmission through enamel is greater than that through dentin, probably reflecting differences in refractive indices and extinction coefficients.
Light transmission through enamel, dentin, and extracted teeth seemed to follow Beer-Lambert’s law.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Uusitalo, E.& Varrela, Juha& Lassila, Lippo V. J.& Vallittu, Pekka K.. 2016. Transmission of Curing Light through Moist, Air-Dried, and EDTA Treated Dentine and Enamel. BioMed Research International،Vol. 2016, no. 2016, pp.1-6.
https://search.emarefa.net/detail/BIM-1098174
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Uusitalo, E.…[et al.]. Transmission of Curing Light through Moist, Air-Dried, and EDTA Treated Dentine and Enamel. BioMed Research International No. 2016 (2016), pp.1-6.
https://search.emarefa.net/detail/BIM-1098174
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Uusitalo, E.& Varrela, Juha& Lassila, Lippo V. J.& Vallittu, Pekka K.. Transmission of Curing Light through Moist, Air-Dried, and EDTA Treated Dentine and Enamel. BioMed Research International. 2016. Vol. 2016, no. 2016, pp.1-6.
https://search.emarefa.net/detail/BIM-1098174
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1098174
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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