Evaluation of the Effect of Different Curing Units and Exposure Times on Pulp Chamber Temperature Using Simulated Pulpal Microcirculation

Objective: To compare the elevations in physiological pulp chamber temperature and blood microcirculation during light curing using four different light sources at two different exposure times. Materials and Methods: The study was performed on eighty Class-V cavities divided into eight groups of ten experiments each, according to the curing unit and exposure time. Short-term curing was performed in four groups: quartz-tungstenhalogen (QTH)-20 seconds (s) (XL3000, 3M ESPE, St. Paul, MN, USA); Woodpecker (WP)-15s (Lux V Light Cure Unit, WP, Apexion Dental Products); KR-10s (Demi Plus Dental Curing Light, Kerr Dental) and VL-3s (VALO light-emitting diode Curing Light Xtra Power mode, Ultradent Products, South Jordan, UT, USA). The same units were used for long-term curing at double the exposure time (i.e., QHT-40s, WP-30s, KR20s, VL-3+3s). Composite material (Filtek Ultimate, 3M/ESPE) was placed into the cavities, followed by light curing performed at a distance of 1 mm. Temperature changes in the pulp chamber were recorded. The Kruskal-Wallis test, followed by Mann-Whitney U multiple comparisons test, were used for statistical analyses, with p

Yapay Pulpal Mikrosirkülasyonu Kullanılarak Farklı Işınlama Üniteleri ve Işınlama Sürelerinin Pulpa Odası Sıcaklığına Etkisinin Değerlendirilmesi

Amaç: İki farklı ışınlama süresinde dört farklı ışık kaynağı kullanılarak ışıkla sertleştirme sırasında fizyolojik kan mikrosirkülasyonu ile birlikte pulpa odası sıcaklık artışlarını karşılaştırmak. Gereç ve Yöntemler: Çalışma, farlı ışık kaynakları ve farklı ışınlama süresine göre, her biri 10 deneyden oluşan sekiz grupla seksen Sınıf-V kavite üzerinde gerçekleştirilmiştir. Kısa süreli kürleme dört grupta gerçekleştirildi: kuvars-tungsten-halojen (QTH) 20 saniye (XL3000, 3M ESPE, St. Paul, MN, ABD); Woodpecker (WP) -15s (Lux V Işık Tedavi Ünitesi, WP, Apexion Dental Ürünleri); KR-10s (Demi Plus Dental Kür Işık, Kerr Dental); ve VL-3s (VALO ışık yayan diyot Kür Işık Xtra Güç modu, Ultradent Ürünler, South Jordan, UT, ABD). Aynı birimler, pozlama süresinin iki katı uzun süreli ışınlama için kullanılmıştır (yani, QHT-40s, WP-30s, KR-20s, VL-3+3s). Kompozit malzeme (Filtek Ultimate, 3M/ESPE) boşluklara yerleştirildi, ardından 1 mm mesafede ışıkla sertleştirme yapıldı. Pulpa odasındaki sıcaklık değişimleri kaydedildi. Kruskal-Wallis testi, ardından Mann-Whitney U çoklu karşılaştırma testi uygulanmış, istatistiksel analizlerde p

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