کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1423292 986497 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bonding to ground versus unground enamel in fluorosed teeth
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Bonding to ground versus unground enamel in fluorosed teeth
چکیده انگلیسی

ObjectivesTo determine the effect of grinding on the bonding effectiveness of a self-etch and an etch-and-rinse adhesive to fluorosed enamel.MethodsThe teeth were classified using the Thylstrup and Fejerskov index (TFI). Fluorosed teeth (TFI = 5) obtained from Isparta (Turkey) and control teeth (TFI = 0) obtained from Leuven (Belgium) were used. Using a depth-marking diamond bur, 0.3 mm of enamel was removed from mid-buccal and mid-palatal/lingual surfaces of the teeth, whereas the area adjacent to the ground area was left unprepared. A two-step self-etch (Clearfil Protect Bond, Kuraray) and a three-step etch-and-rinse adhesive (Optibond FL, Kerr) were used to bond the resin composite to the ground and unground enamel. Rectangular micro-specimens were prepared using the slow-speed diamond saw and tested in tensile to determine the micro-tensile bond strength (μTBS).ResultsThe μTBS to unground fluorosed enamel was significantly lower than to ground fluorosed enamel for Clearfil Protect Bond (15.8 ± 15.2 and 45.0 ± 12.4 MPa, p < 0.0001) and for Optibond FL (35.5 ± 21.4 and 50.5 ± 12.3 MPa, p < 0.05), respectively. In control teeth, Clearfil Protect Bond bonded better to ground enamel (p < 0.01), whereas OptiBond FL exhibited a similar bonding effectiveness to ground and unground enamel (p = 0.0634).SignificancePreparation of enamel improved the resin–enamel bond strength in fluorosed teeth. The bonding effectiveness to unground enamel was lower in fluorosed teeth than in control teeth for the self-etch adhesive tested.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dental Materials - Volume 23, Issue 10, October 2007, Pages 1250–1255
نویسندگان
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