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دراسة مخبريّة للانطباق الحفافيّ لطريقتي صنع الجسور الزيركونيّة CAD\CAM و Slip-Casting

دراسة مخبريّة للانطباق الحفافيّ لطريقتي صنع الجسور الزيركونيّة CAD\CAM و Slip-Casting

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 Publication date 2015
  fields Dentistry
and research's language is العربية
 Created by Shamra Editor




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Recent development in dental materials had led to the fabrication of metal free fixed prosthodontics to improve the mechanical and aesthetic properties to restore posterior teeth depending on many techniques, therefore came the propose of this study to compare the marginal fit of Zirconia bridges made by CAD/CAM and Slip-Cast techniques. 30 Bridges were fabricated to restore missing first lower molar, they were divided into two groups (15 CAD\CAM, 15 Slip-Cast). The marginal fit was evaluated by measuring the thickness of light body silicone that made using Replica technique. Depending on T-test, the mean marginal discrepancy for CAD/CAM groups was 13.92μ and 11.30μ for Slip-Cast techniques. Therefore, it was concluded that the marginal fit of Slip-Cast techniques was significantly better than CAD/CAM techniques.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة المقارنة بين تقنيتين لصنع الجسور الزيركونية الخلفية: Slip-Casting و CAD/CAM. تم تصنيع 30 جسرًا خزفيًا لتعويض رحى أولى سفلية مفقودة، حيث تم تقسيمها إلى مجموعتين: 15 جسرًا بتقنية CAD/CAM و 15 جسرًا بتقنية Slip-Casting. تم تقييم الانطباق الحفافي من خلال قياس سماكة السيليكون الخفيف باستخدام تقنية النسخ المضاعف. أظهرت النتائج أن متوسط الفراغ الحفافي لجسور CAD/CAM كان 13.92 ميكرون، بينما كان 11.30 ميكرون لجسور Slip-Casting. خلصت الدراسة إلى أن الانطباق الحفافي لجسور Slip-Casting كان أفضل بشكل ملحوظ من جسور CAD/CAM. تشير النتائج إلى أن تقنية Slip-Casting توفر انطباقًا أفضل للجسور الخلفية مقارنة بتقنية CAD/CAM، مما يجعلها الخيار الأفضل في سياق الدراسة الحالية.
Critical review
دراسة نقدية: على الرغم من أن الدراسة تقدم مقارنة شاملة بين تقنيتي Slip-Casting و CAD/CAM، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن توسيع حجم العينة لتشمل عددًا أكبر من الجسور لتحسين دقة النتائج. ثانيًا، لم يتم مناقشة تأثير العوامل السريرية الأخرى مثل نوع المادة المستخدمة في الطباعة أو مهارة الطبيب في تحضير الأسنان، والتي قد تؤثر على النتائج. ثالثًا، كان من الممكن تضمين مقارنة مع تقنيات أخرى لصنع الجسور الزيركونية للحصول على صورة أكثر شمولية. أخيرًا، لم يتم التطرق إلى التكلفة والوقت المستغرق لكل تقنية، وهو ما يمكن أن يكون عاملًا مهمًا في اختيار التقنية المناسبة في الممارسة السريرية.
Questions related to the research
  1. ما هي التقنيتان المستخدمتان في الدراسة لصنع الجسور الزيركونية؟

    التقنيتان المستخدمتان هما Slip-Casting و CAD/CAM.

  2. ما هو متوسط الفراغ الحفافي لجسور CAD/CAM حسب الدراسة؟

    متوسط الفراغ الحفافي لجسور CAD/CAM كان 13.92 ميكرون.

  3. ما هي التقنية التي أظهرت نتائج أفضل في الانطباق الحفافي؟

    تقنية Slip-Casting أظهرت نتائج أفضل في الانطباق الحفافي.

  4. ما هي العوامل التي لم يتم مناقشتها في الدراسة والتي قد تؤثر على النتائج؟

    العوامل التي لم يتم مناقشتها تشمل نوع المادة المستخدمة في الطباعة، مهارة الطبيب في تحضير الأسنان، التكلفة، والوقت المستغرق لكل تقنية.


References used
BADER, J; ROZIER, R; MC FALL, W. Effect of Crown Margins on Periodontal Conditions in Regulary Attending Patients. J Prosthet Dent 1991;65:75
BALKAYA, M.C; CINER, A ; PAMUK, S. Influence of Firing Cycles on the Margin Distortion of 3 All-Ceramic Crown Systems. J Prosthet Dent 2005;93:346-355
BESCHNIDT, S.M ; STRUB, J.R . Evaluation of the Marginal Accuracy of Different All Ceramic Crown Systems After Simulation in the Artificial Mouth. J Oral Rehabil 1999;26:582-93
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