Marginal adaptation of zirconia CAD-CAM copings with two cervical finish lines
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
View: 156
This Paper With 6 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JDMT-12-1_003
تاریخ نمایه سازی: 15 فروردین 1402
Abstract:
Introduction: Marginal adaptation is important for the long-term success of restorations. The finish line design can influence the marginal integrity. This study aimed to evaluate the effect of radial shoulder and deep chamfer finish line designs on the marginal adaptation of zirconia copings fabricated by the CAD-CAM system. Methods: In this experimental study, a standard chrome-cobalt die (height: ۷mm, diameter: ۵mm) was designed by software. The data were sent to a ۳D printer device, and the resin pattern of the standard die was fabricated. After casting the resin pattern, a standard chrome-cobalt die was obtained with a ۱-mm radial shoulder finish line and a ۰.۸-mm deep chamfer finish line. The walls were ۱۲° converge (۶° each) towards the occlusal surface. The standard die was replicated ۹ times with a polyvinyl siloxane elastomeric material and poured with type IV dental stone. Zirconia copings were fabricated, and the vertical gap at ۸ points was measured by a stereo microscope. Data were analyzed by the t-test, and statistical significance was set at α=۰.۰۵.Results: The vertical gap values were ۱۰۲.۹۱ µm for deep chamfer and ۸۲.۴۲ µm for radial shoulder finish lines. There was no significant difference between the two preparation designs in terms of the mean vertical gap (P=۰.۰۹۸).Conclusion: The results of this study showed clinically acceptable marginal adaptation values for both deep chamfer and radial shoulder preparation designs without a statistically significant difference. (J Dent Mater Tech ۲۰۲۳;۱۲(۱): ۱۶-۲۱)
Keywords:
Authors
Maryam Moslemioon
Department of Prosthodontics, School of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran.
Faeze Zanjani Jam
Undergraduate Student, Zanjan University of Medical Sciences, Zanjan, Iran
Rasoul Moharami
Mechanical Department, University of Zanjan, Zanjan, Iran.
Atefeh Yousefi Jordehi
Department of Operative Dentistry, School of Dentistry, Zanjan University of Medical Sciences, Zanjan, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :