Journals / Clinical Dentistry and Research / 2015 / Cilt: 39 - Sayı: 1

ORAL SICAKLIK DEĞİŞİKLİKLERİNİN FARKLI YAPIDAKİ RESTORATİF POST VE KOR MATERYALLER ÜZERİNDEKİ TERMAL STRES ETKİSİNİN ÜÇ BOYUTLU SONLU ELEMANLAR ANALİZİ İLE KARŞILAŞTIRILMASI

COMPARISON OF THERMAL STRESS ON VARIOUS RESTORATIVE POST AND CORE MATERIALS GENERATED BY ORAL TEMPERATURE CHANGES USING THREE DIMENSIONAL FINITE ELEMENT ANALYSIS

Pages
27–35
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)

Conclusions: Cast gold post-core or non-metallic prefabricated posts-composite core materials generated better thermal stress distribution and their use in clinical practice could be recommended.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Background and Aim: The purpose of this study was to compare thermal stress on various restorative post and core materials generated by oral temperature changes using three dimensional finite element analysis.
📊
Key Findings & Data:The thermal load applied to the three dimensional tooth model simulated the draught of hot (60°C) and cold (15°C) food or beverages for 5 seconds.
💡
Conclusion & Impact:Conclusions: Cast gold post-core or non-metallic prefabricated posts-composite core materials generated better thermal stress distribution and their use in clinical practice could be recommended.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Background and Aim: The purpose of this study was to compare thermal stress on various restorative post and core materials generated by oral temperature changes using three dimensional finite element analysis. Materials and Methods: Three dimensional model of a mandibular right first premolar restored with a metal-ceramic crown and a dowel – core system was constructed. The thermal load applied to the three dimensional tooth model simulated the draught of hot (60°C) and cold (15°C) food or beverages for 5 seconds. Temperature distribution and thermal stress was calculated at 8 points in von Mises value of MPa, determined on the buccolingual plane using thermal loading function of finite element analysis programme. Results: The temperature gradient of the metal post and cores was smaller than that of the resin cores because of the high thermal conductivity of the former materials. Thermal changes and post-core materials have a significant effect on the thermal stress concentrations particularly located in the restorations. The gold post and core system showed the smallest thermal stress. The combination of prefabricated stainless steel post and amalgam core generated the highest thermal stress in the restoration and dentin. Cast post-core systems generated lower thermal stress when compared to prefabricated dowel and core materials. Conclusions: Cast gold post-core or non-metallic prefabricated posts-composite core materials generated better thermal stress distribution and their use in clinical practice could be recommended.

Özet

Amaç: Bu çalışmanın amacı, oral sıcaklık değişikliklerinin farklı yapıdaki restoratif post ve kor materyaller üzerinde meydana getirdiği termal stresleri üç boyutlu sonlu elemanlar analizi ile karşılaştırmaktır. Gereç ve Yöntem: Termal stres analizi için, içinde post ve kor bulunan alt sağ 1. premolar dişe ait anatomik ve protetik yapılar ile birlikte, dişi çevreleyen sert ve yumuşak dokuların üç boyutlu sonlu elemanlar modeli oluşturulmuştur. Modele 5 saniye süreyle soğuk (15°C) ve sıcak (60°C) olmak üzere iki farklı sıcaklık koşulu uygulanmış ve sıcaklık dağılım ve termal stres analizi gerçekleştirilmiştir. Sıcaklık dağılım ve termal stres ölçümleri von Mises MPa değeri ile bukko-lingual model kesiti üzerinde belirlenen 8 noktada sonlu eleman analizi metodunun termal yükleme fonksiyonu kullanılarak yapılmıştır. Bulgular: Tek parça döküm post-kor ve prefabrik metal postamalgam kor sistemleri, yüksek termal iletkenlik katsayıları sebebiyle, metal post-kompozit kor ve metal olmayan postkompozit kor sistemlerine göre, incelenen model katmanları arasında daha düşük sıcaklık farklılıklarının oluşmasına yol açmışlardır. En düşük termal stres oluşumu, döküm altın post ve altın kor sisteminde, en yüksek termal stres oluşumu, prefabrik paslanmaz çelik post ve amalgam kor sisteminde meydana gelmiştir. Tek parça döküm post-kor sistemleri, iki parça prefabrik post–kor sistemlerine kıyasla, daha avantajlı termal stres sonuçları vermektedir. Sonuçlar: Döküm altın post-kor ve metal olmayan postkompozit kor kombinasyonu daha olumlu termal stres dağılımı göstermişlerdir. Bu sebeple klinikte kullanımları tavsiye edilebilir

🔖

Cite This Article

ÇAKAN, U., SAYGILI, G. (2015). ORAL SICAKLIK DEĞİŞİKLİKLERİNİN FARKLI YAPIDAKİ RESTORATİF POST VE KOR MATERYALLER ÜZERİNDEKİ TERMAL STRES ETKİSİNİN ÜÇ BOYUTLU SONLU ELEMANLAR ANALİZİ İLE KARŞILAŞTIRILMASI. Clinical Dentistry and Research, Cilt: 39 - Sayı: 1, 27–35. https://ajindex.com/articles/147367

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (16)

  1. Mancebo JC, Jiménez-Castellanos E, Cañadas D. Effect of tooth type and ferrule on the survival of pulpless teeth restored with fiber posts: a 3-year clinical study. Am J Dent 2010; 23: 351- 356
  2. Shillinburg HT, Hobo S, Whitsett L, Brackett S, editors. Fundamentals of Fixed Prosthodontics. 4th ed. Chicago: Quintessence; 2012
  3. Marchi GM, Paulillo LAMS, Pimenta, LAF, De Lima FAP. Effect of different filling materials in combination with intraradicular posts on the resistance to fracture of weakened roots. J Oral Rehabil 2003; 30: 623-629
  4. Qualtrough AJE, Manocci F. Tooth-Colored Post Systems: A review. Oper Dent 2003; 28: 86-91
  5. Lippo VJ, Tanner J, Le Bell AM, Narva K, Vallittu PK. Flexural properties of fiber reinforced root canal posts. Dent Mater 2004; 20: 29-36
  6. Goodacre CJ. Carbon fiber posts may have fewer failures than metal posts. J Evid Based Dent Pract 2010; 10: 32-24
  7. A Alharbi F, Nathanson D, Morgano SM, Baba NZ. Fracture resistance and failure mode of fatigued endodontically treated teeth restored with fiber-reinforced resin posts and metallic posts in vitro. Dent Traumatol 2014; 30: 317-325
  8. Juloski J, Radovic I, Goracci C, Vulicevic ZR, Ferrari M. Ferrule effect: a literature review. J Endod 2012; 38: 11-19
  9. Palmer DS, Barco MT, Billy EJ. Temperature extremes produced orally by hot and cold liquids. J Prosthet Dent 1992; 67: 325-327
  10. Yang HS, Lang LA, Guckes AD, Felton DA. The effect of thermal change on various dowel-and-core restorative materials. J Prosthet Dent 2001; 86: 74-80
  11. Toparlı M. Stress analysis in a post-restored tooth utilizing the finite element method. J Oral Rehabil 2003; 30: 470-476
  12. Mezzomo LA, Corso L, Marczak RJ, Rivaldo EG. Threedimensional FEA of effects of two dowel-and-core approaches and effects of canal flaring on stress distribution in endodontically treated teeth. J Prosthodont 2011; 20: 120-129
  13. Joshi S, Mukherjee A, Kheur M, Mehta A. Mechanical performance of endodontically treated teeth. Finite Elem Anal Des 2001; 37: 587-601
  14. Toparlı M, Sasaki S. Finite element analysis of temperature and thermal stress in a post restored teeth. J Oral Rehabil 2003; 30: 921-926
  15. Güngör MA, Küçük M, Dündar M, Karaoğlu Ç, Artunç C. Effect of temperature and stress distribution on all-ceramic restorations by using a three-dimensional finite element analysis. J Oral Rehabil 2004; 31: 172-178
  16. Incropera FP, Dewitt DP, editors. Fundamentals of Heat and Mass Transfer, 5th ed., New