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Journals / Clinical Dentistry and Research / 2015 / Cilt: 39 - Sayı: 3

KEMİK SEVİYESİ, POST UZUNLUĞU VE FERRUL YÜKSEKLİĞİNİN METAL VE CAM-FİBER POSTLARIN KIRILMA DAYANIMLARINA ETKİSİ

INFLUENCE OF BONE LEVEL, POST LENGTH AND FERRULE HEIGHT ON FRACTURE RESISTANCE OF METAL AND GLASS-FIBER POSTS

Cem ŞAHİN
Simel AYYILDIZ
Pages
87–94
DOI
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AI Summary & Key Takeaways

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

Increasing the post length with apical care will contribute to the success.

📌 3 Key Takeaways

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Objective & Hypothesis:Background and Aim: Dentin-post combination subjected to complex occlusal forces may result undesired fractures even after a successful treatment.
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Key Findings & Data:The crowns were cut off 2 mm coronal from the cement-enamel junction to obtain straight roots.
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Conclusion & Impact:Increasing the post length with apical care will contribute to the success.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Background and Aim: Dentin-post combination subjected to complex occlusal forces may result undesired fractures even after a successful treatment. The aim of this study was to evaluate whether the durability of glass-fiber posts are improved comparing with metal posts.Material and Methods: One hundred sixty freshly extracted caries free upper second premolar teeth with one root canal were selected for this study. The crowns were cut off 2 mm coronal from the cement-enamel junction to obtain straight roots. The samples were embedded into 6 mm or 8 mm depth acrylic resin with 5 cm radius to mimic bone level. To perform fracture resistance test each, specimen was settled in a special metal holder and loaded until fracture. Data were analyzed using Sample T-test, Kruskal Wallis and Dunn's tests.Results: Mean fracture resistance of fiber-post samples (1280.07±191.48 N) were significantly higher than metal-post samples (1157.19± 160.26 N) (p=0.01). Mean fracture resistance of samples in the 8 mm bone was 1270.2±168.6 N, while it was 1167.0±190.1 N at 6 mm group. Effect of ferrule to fracture resistance was found to be significantly higher at "2 mm" compared with "0 mm" height (p=0.03). There was no correlation between fracture types and post types at different bone levels. There was no correlation between fracture types and bone levels. Conclusion: Fracture occurrence is independent from bone levels and post length. To obtain the most resistant restoration ferrule establish is doubtless. Increasing the post length with apical care will contribute to the success.

Özet

Amaç: Kompleks okluzal kuvvetlere maruz kaldığında başarılı bir dentin-post kombinasyonunda dahi beklenmedik kırıklar görülebilir. Post uzunluğu kökün 3'te 2'ine ulaştıkça stres kırığı riski artar. Bu çalışmanın amacı uygulama ve bağlanma avantajlarıyla geliştirilen cam fiber postları metal postlarla karşılaştırmaktır.Materyal ve Metod: Yüzaltmış adet çürüksüz tek köklü üst 2. premolar dişler çalışmaya dahil edildi.kronlar mine-sement sınırının 2 mm coronalinden elmas diskler kullanılarak kesildi. Örnekler kemiği taklit eden 6 ve 8 mm derinliğinde ve 5 cm çapında akril blokların içerisine gömüldü. Kırma testi için örnekler yer düzlemine 45°'lik açıyla hazırlanmış olan metal taşıyıcı içerisine yerleştirildi. Veriler, Sample t test, Kruskall Wallis ve dunn's testi kullanılarak analiz edildi.Bulgular: Fiber post örneklerin ortalama kırılma dayanımları (1280.07±191.48 N) metal post örneklerden (1157.19± 160.26 N) belirgin olarak yüksek bulundu (p=0.01). 8 mm kemik içerisindeki örneklerin ortalama kırılma dayanımları 1270.2±168.6 N bulunurken bu değer 6 mm kemik içerisinde 1167.0±190.1 N olarak tespit edildi. Kırılma dayanımına 2 mm ferrulun etkisi 0 mm'ye oranla belirgin olarak farklı bulundu (p=0.03). Farklı kemik yükseklikleri içerisinde kırık türleri ve post türleri arasında istatistiksel bir korelasyon bulunamamıştır.Sonuç: Kırık oluşumu kemik seviyesi ve post uzunluğundan bağımsızdır. Dayanımı artırmak için ferrul planlaması gereklidir. Apical stress oluşturmadan post boyunu uzatmak başarıya katkı sağlar.

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Cite This Article

ŞAHİN, C., AYYILDIZ, S. (2015). KEMİK SEVİYESİ, POST UZUNLUĞU VE FERRUL YÜKSEKLİĞİNİN METAL VE CAM-FİBER POSTLARIN KIRILMA DAYANIMLARINA ETKİSİ. Clinical Dentistry and Research, Cilt: 39 - Sayı: 3, 87–94. https://ajindex.com/articles/147365

References (13)

  1. Bitter K, Meyer-Lueckel H, Priehn K, Kanjuparambil JP, Neumann K, Kielbassa AM. Effects of luting agent and thermocycling on bond strengths to root canal dentine. Int Endod J 2006; 39: 809-818.
  2. Bergman B, Lundquist P, Sjogren U, Sundquist G. Restorative and endodontic results after treatment with cast posts and cores. J Prosthet Dent 1989; 61: 10-15.
  3. Schwartz RS, Robbins JW. Post placement and restoration of endodontically treated teeth: a literature review. J Endod 2004; 30: 289-301.
  4. Fokkinga WA, Kreulen CM, Vallittu PK, Creugers NH. A structured analysis of in vitro failure loads and failure modes of fiber, metal, and ceramic post-and-core systems. Int J Prosthodont 2004; 17: 476-482.
  5. Cormier CJ, Burns DR, Moon P. In vitro comparison of the fracture resistance and failure mode of fiber, ceramic, and conventional post systems at various stages of restoration. J Prosthodont 2001; 10: 26-36. 6. Bitter K, Kielbassa AM. Post-endodontic restorations with adhesively luted fiber-reinforced composite post systems: a review. Am J Dent 2007; 20: 353-360.
  6. Pegoretti A, Fambri L, Zappini G, Bianchetti M. Finite element analysis of a glass fibre reinforced composite endodontic post. Biomaterials 2002; 23: 2667-2682.
  7. Scotti N, Scansetti M, Rota R, Pera F, Pasqualini D, Berutti E. The effect of the post length and cusp coverage on the cycling and static load of endodontically treated maxillary premolars. Clin Oral Invest 2011; 15: 923-929.
  8. Barcellos RR, Correia DP, Farina AP, Mesquita MF, Ferraz CC, Cecchin D. Fracture resistance of endodontically treated teeth restored with intra-radicular post: the effects of post system and dentine thickness. J Biomech 2013; 46: 2572-2577.
  9. Cecchin D, Farina AP, Guerreiro CA, Carlini-Junior B. Fracture resistance of roots prosthetically restored with intra-radicular posts of different lengths. J Oral Rehabil 2010; 37: 116-122.
  10. Stankiewicz N, Wilson P. The ferrule effect. Dent Update 2008; 35: 222-224, 227-228.
  11. Libman WJ, Nicholls JI. Load fatigue of teeth restored with cast posts and cores and complete crowns. Int J Prosthodont 1995; 8: 155-161.
  12. Stankiewicz NR, Wilson PR. The ferrule effect: a literature review. Int Endod J 2002; 35: 575-581. Gegauff AG. Effect of crown lengthening and ferrule placement on static load failure of cemented cast post-cores and crowns. J Prosthet Dent 2000; 84: 169-179.
  13. Sendhilnathan D, Nayar S. The effect of post-core and ferrule on the fracture resistance of endodontically treated maxillary central incis