کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3146463 1197275 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of the marginal fit of three margin designs of resin composite crowns using CAD/CAM
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی دندانپزشکی، جراحی دهان و پزشکی
پیش نمایش صفحه اول مقاله
Evaluation of the marginal fit of three margin designs of resin composite crowns using CAD/CAM
چکیده انگلیسی

ObjectivesTo examine the marginal fit of resin composite crowns manufactured with the CEREC 3 system employing three different margin designs; bevel, chamfer and shoulder, by means of a replica technique and a luting agent.MethodsThree master casts were fabricated from an impression of a typodont molar tooth and a full-coverage crown prepared with a marginal finish of a bevel, a chamfer and a shoulder. Each cast was replicated 10 times (n = 10). Scanning of the replicas and crown designing was performed using the CEREC Scan™ system. The crowns were milled from Paradigm MZ100™ composite resin blocks. The marginal fit of the crowns was evaluated with a replica technique (Aquasil™ LV, Dentsply), and with a resin composite cement (RelyX™ Unicem, Aplicap™) and measured with a travelling microscope. Statistical analysis was performed using two-way ANOVA.ResultsFor the replica technique the average marginal gaps recorded were: Bevel Group 105 ± 34 μm, Chamfer Group 94 ± 27 μm and Shoulder Group 91 ± 22 μm. For the resin composite cement the average marginal gaps were: Bevel Group 102 ± 28 μm, Chamfer Group 91 ± 11 μm and Shoulder Group 77 ± 8 μm. Two-way ANOVA analysis showed that there was no statistically significant difference between the three groups of finishing lines regardless of the cementation technique used.ConclusionsThe marginal gap of resin composite crowns manufactured with the CEREC 3 system is within the range of clinical acceptance, regardless of the finishing line prepared or the cementation technique used.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dentistry - Volume 35, Issue 1, January 2007, Pages 68–73
نویسندگان
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