Journals / Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi / 2019 / Cilt: 29 - Sayı: 2

EFFECT OF DIFFERENT MARGINAL FINISH LINES AND COPING DESIGNS ON THE FRACTURE RESISTANCE OF VENEERING PORCELAIN ON VARIOUS ZIRCONIA FRAMEWORKS

FARKLI KENAR BİTİM VE ALT YAPI DİZAYNLARININ ÇEŞİTLİ ZİRKONYUM ALT YAPILAR ÜZERİNDEKİ VENER PORSELENİN KIRILMA DİRENCİNE ETKİSİNİN İNCELENMESİ

Pages
268–276
Publication Date
2022-10-10
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: The highest fracture resistance values of veneer porcelain was seen in chamfer line White Peaks crowns prepared anatomically, whereas the framework of the lowest fracture resistance values was seen in the chamfer line Lava crowns.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Aim: In this in vitro study, the effect of finish line and coping design on the fracture resistance of veneer porcelains on the zirconia frameworks prepared through various methods was analyzed.
📊
Key Findings & Data:Material and Methods: To standardization, the dies representing the upper first premolar tooth were prepared in the CNC turning machine as: the first die; with a 6 mm crown length and at 60 taper angle, having an anatomic occlusal surface with a 1 mm shoulder line, the second die; with a 6 mm crown length and at 60 taper angle, having an anatomic occlusal surface with a 1 mm chamfer line, the third die; with a 6 mm crown length and at 60 taper angle, having a flat occlusal surface with a 1 mm shoulder line, and the fourth die; with a 6 mm crown length and at 60 taper angle, having a 1 mm chamfer line with a flat occlusal surface. 60 pieces of epoxy resin dies were obtained from the measurements taken from the dies.
💡
Conclusion & Impact:Conclusion: The highest fracture resistance values of veneer porcelain was seen in chamfer line White Peaks crowns prepared anatomically, whereas the framework of the lowest fracture resistance values was seen in the chamfer line Lava crowns.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: In this in vitro study, the effect of finish line and coping design on the fracture resistance of veneer porcelains on the zirconia frameworks prepared through various methods was analyzed. Material and Methods: To standardization, the dies representing the upper first premolar tooth were prepared in the CNC turning machine as: the first die; with a 6 mm crown length and at 60 taper angle, having an anatomic occlusal surface with a 1 mm shoulder line, the second die; with a 6 mm crown length and at 60 taper angle, having an anatomic occlusal surface with a 1 mm chamfer line, the third die; with a 6 mm crown length and at 60 taper angle, having a flat occlusal surface with a 1 mm shoulder line, and the fourth die; with a 6 mm crown length and at 60 taper angle, having a 1 mm chamfer line with a flat occlusal surface. 60 pieces of epoxy resin dies were obtained from the measurements taken from the dies. Zirconia frameworks had been prepared through different methods, then crowns were completed by applying the body porcelain. After cementation the crowns on the epoxy resin dies, the fracture resistance of veneer porcelains was measured by the Universal Test device. Results: The data were analyzed by three-way variance analysis (ANOVA). It was statistically determined that the interaction between the finish line, coping design and materials; and the materials and coping design, and the finish line and the materials. However; no significant interaction was observed between the finish line and coping design; and the materials, coping design and the finish line. Conclusion: The highest fracture resistance values of veneer porcelain was seen in chamfer line White Peaks crowns prepared anatomically, whereas the framework of the lowest fracture resistance values was seen in the chamfer line Lava crowns.

Özet

Amaç: Bu çalışmada, kenar bitim ve alt yapı şekillerininçeşitli zirkonyum alt yapılar üzerindeki venerporselenlerinin kırılma direncine etkisi in vitro olarakincelenmiştir.Gereç ve Yöntem: Örneklerin elde edileceği kesilmiş üst1. küçük azı dişini temsil eden güdükler; 1. Güdük; 6mm kuron boyu ve 60taper açısında 1 mm shoulderbasamak ile anatomik oklüzal yüzeyli, 2. Güdük; 6 mmkuron boyu ve 60taper açısında 1 mm chamfer basamakile anatomik oklüzal yüzeyli, 3. Güdük; 6 mm kuron boyuve 60taper açısında, 1 mm shoulder basamak ile düzoklüzal yüzeyli, 4. Güdük; 6 mm kuron boyu ve 60taperaçısında 1 mm chamfer basamak ile düz oklüzal yüzeyliolarak standardizasyonun sağlanması amacıyla CNC tornatezgahında hazırlanmıştır. Güdüklerden alınan ölçülerden60 adet epoksi rezin güdük elde edilmiştir. Zirkonyum altyapılar farklı yöntemlerle hazırlandıktan sonra üst yapıporseleni uygulanarak kuronlar tamamlanmıştır. Kuronlarepoksi rezin güdükler üzerine simante edildikten sonravener porselenlerinin kırılma dirençleri Universal testcihazında saptanmıştır.Bulgular: Veriler üç yönlü varyans analizi (ANOVA) iledeğerlendirilmiştir. Kenar bitim şekli, alt yapı şekli vemateryallerin, materyaller ile alt yapı şekli, materyaller ilekenar bitim şekli arasındaki etkileşimin anlamlı olduğu,kenar bitim şekli ile alt yapı şekli, materyaller ile alt yapışekli ve kenar bitim şekli arasındaki etkileşimlerin iseanlamlı olmadığı istatistiksel olarak tespit edilmiştir.Sonuç: En yüksek vener porselen kırılma direncideğerlerinin alt yapısı anatomik şekilde hazırlananchamfer basamaklı White Peaks kuronlarda, en düşükkırılma direnci değerlerinin ise alt yapısı düz şekildehazırlanan chamfer basamaklı Lava kuronlarda olduğugörülmüştür.

🔖

Cite This Article

ALKURT, M., DUYMUŞ, Z. Y. (2022). EFFECT OF DIFFERENT MARGINAL FINISH LINES AND COPING DESIGNS ON THE FRACTURE RESISTANCE OF VENEERING PORCELAIN ON VARIOUS ZIRCONIA FRAMEWORKS. Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi, Cilt: 29 - Sayı: 2, 268–276. https://ajindex.com/articles/451887

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (13)

  1. Mıura S, Kasahara S, Yamauchı S, Okuyama Y, Izumıda A, Aıda J, Egusa H. Clinical Evaluation of zirconia-basedall-ceramic single crowns: an up to 12-year retrospectivecohort study. Clin Oral Invest 2018; https://doi.org/10.1007/s00784-017-2142-y.
  2. Tinschert J, Zwez D, Marx R, Anusavice KJ. Structural reliability of alumina-, feldspar-leucitemica-and zirconia-based ceramics. J Dent 2000; 28: 529-35.
  3. Oılo M, Gjerdet NR. Fractographic analyses of allceramiccrowns: a study of 27 clinically fractured crowns. Dent Mater 2013; 29: e78-84. Dogan S, Raıgrodskı AJ, Zhang H, Mancl LA. Prospectivecohort clinical study assessing the 5- year survival and successof anterior maxillary zirconia-based crowns with customizedzirconia copings. J Prosthet Dent 2017; 117: 226-32.
  4. Omori S, Komada W, Yoshida K, Miura H. Effect of thickness of zirconia-ceramic crown frameworks on strength and fracture pattern. Dent Mater J 2013; 32: 189-94.
  5. Rafferty BT, Janal MN, Zavanellı RA, Sılva NR, Rekow ED, Thompson VP, Coelho PG. Design features of a three-dimensional molar crown and related maximum principalstress. A finite element model study. Dent Mater 2010; 26: 156-63.
  6. Llobell A, Nicholls JI, Kois JC, Daly CH. Fatigue life of porcelain repair systems. Int J Prosthodont 1992; 5: 205-13.
  7. Pjetursson BE, Tan WC, Tan K, Bragger U, Zwahlen M, Lang NP. A systematic review of the survival and complication rates of resin-bonded bridges after an observation period of at least 5 years. Clin Oral İmplants Res 2008; 19: 131-41.
  8. Nejatıdanesh F, Moradpoor H, Savabı O. Clinical outcomesof zirconia-based implant- and toothsupported single crowns. Clin Oral Investig 2016; 20: 169-78.
  9. Piwowarczyk A, Ottl P, Lauer HC, Kuretzky T. A clinical report and overview of scientific studies and clinical procedures conducted on the 3M ESPE Lava all-ceramic system. J Prosthodont 2005; 14: 39-45.
  10. Besimo CE, Spielmann HP, Rohne, HP. Computedassisted generation of all-ceramic crowns and fixed partial dentures. Int. J Comput Dent 2001; 4: 243-62.
  11. Lawn BR, Pajares A, Zhang Y, Deng Y, Polack MA, Lloyd IK, Rekow ED, Thompson VP. Materials design in the performance of all-ceramic crowns. Biomaterials 2004; 25: 2885-92.
  12. Sundh A, Sjogren G. A comparison of fracture strength of yttrium-oxide- partially-stabilized zirconia ceramic crowns with varying core thickness, shapes and veneer ceramics. J Oral Rehabil 2004; 31: 682-8.
  13. Goodacre CJ, Campagni WV, Aquilino SA. Tooth preparations for complete crowns: an art form based on scienti