Observation of Clinical Course with Light-cured Fluoride Releasing Composite Resin UniFil^[○!R] F

• Published in: The Journal of the Kyushu Dental Society Vol. 57; no. 5; pp. 137 - 152
• Main Authors: Nishida, Ikuko, Kojima, Yukimi, Nishioka, Takahiro, Hidaka, Akiko, Maki, Kenshi, Kimura, Mitsutaka
• Format: Journal Article
• Language: English
• Published: KYUSHU DENTAL SOCIETY 25.10.2003
• Subjects: Clinical observation; Fluoride releasing composite resin; Primary teeth
• ISSN: 0368-6833; 1880-8719
• DOI: 10.2504/kds.57.137

A light-cured composite resin is widely used as a restorative material. Recently, it is expected that light-cured fluoride releasing composite resin facilitates the mineralization of caries. In this study, we selected a light-cured fluoride releasing composite resin "UniFil^[○!R] F" combined with "UniFil^[○!R] Bond" for the restoration of primary teeth, continuously observed for 3 years and 6 months after restoration. In one of the patients with primary anterior tooth restoration, the restorative material fell out after 3.5 years and six revealed gaps and steps that increased with time. In contrast, only four of the patients with deciduous molar restoration presented steps palpable with a probe and expanding with time while one patient revealed marginal fracture. Marginal staining was discovered in four of the restored primary anterior teeth and three of the primary posterior teeth. The primary anterior teeth restorations showed no evidence of morphological change as compared with the time of restoration. In contrast, the restored primary posterior teeth revealed partial morphological changes recognizable with the naked eye after restoration in four patients. No abnormalities were observed in the color stability and discoloration, pulpal reaction and secondary caries. SEM observation revealed that while the superficial condition of the restorations of the primary anterior teeth was relatively smooth there was evidence of defective parts in the margins with the enamel. In some patients it was found that the restorations of primary posterior teeth developed a rough surface with time and micro-fractures in the margin. The findings presented above indicate that while the clinical diagnoses and SEM observations generally showed favorable results over time there was evidence that with the passage of time the joint between the enamel and restorative material will develop certain defective locations that increase as time takes its course.