Journals / Acta Odontologica Turcica / 2018 / Cilt: 35 - Sayı: 1

Evaluation of marginal and internal adaptations of posterior all-ceramic crowns fabricated with chair-side CAD/CAM system: an in vitro study

Hastabaşı CAD/CAM sistemi ile üretilen posterior tam seramik kronların marjinal ve internal adaptasyonlarının değerlendirilmesi: in vitro çalışma

Pages
1–8
Publication Date
2017-07-27
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: All materials showed low marginal and internal discrepancies which were considered clinically acceptable.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objective: Advances in chair-side Computer-Aided Design / Computer-Aided Manufacturing (CAD/CAM) technology and materials science currently enable the fabrication of highly esthetic restorations for the anterior and posterior teeth.
📊
Key Findings & Data:All-ceramic restorations (n=10) were fabricated from seven different CAD/CAM blocks (IPS e.max CAD, Lava Ultimate, Incoris TZI, Incoris ZI, Vita Suprinity, Vita Enamic, and GC Cerasmart).
💡
Conclusion & Impact:Conclusion: All materials showed low marginal and internal discrepancies which were considered clinically acceptable.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Bilgisayar yardımlı tasarım · dental marjinal adaptasyon · seramikler

Abstract

Objective: Advances in chair-side Computer-Aided Design / Computer-Aided Manufacturing (CAD/CAM) technology and materials science currently enable the fabrication of highly esthetic restorations for the anterior and posterior teeth. However, there is a lack of evidence regarding the marginal and internal adaptations of new CAD/CAM materials. The objective of this study was to evaluate the marginal and internal adaptations of posterior all-ceramic restorations fabricated from contemporary restorative materials with chair-side CAD/CAM system. Materials and Method: An artificial mandibular left first molar tooth was prepared according to standard tooth preparation procedures, and standard models of the prepared teeth were obtained. All-ceramic restorations (n=10) were fabricated from seven different CAD/CAM blocks (IPS e.max CAD, Lava Ultimate, Incoris TZI, Incoris ZI, Vita Suprinity, Vita Enamic, and GC Cerasmart). The marginal and internal adaptations were measured with silicone replicas, which were sectioned with a thin lancet. The discrepancy between the die and the inner surface of the restoration was examined at 50× magnification by using a light microscope with digital camera. Four reference points were examined at each buccal-lingual section and eight reference points were examined at each mesial-distal section. The results were evaluated by two-way analysis of variance (ANOVA) followed by Tukey HSD test (α=0.05). Results: The values obtained from marginal-internal areas were generally greater than those in the marginal areas. Significant differences were found between the materials. The statistical analysis revealed that there was an interaction between the material type and the location of the reference points (p<0.05); the lowest values were observed in axial areas, and the highest values were observed in occlusal areas. Conclusion: All materials showed low marginal and internal discrepancies which were considered clinically acceptable.

Özet

Amaç: Hastabaşı bilgisayar destekli tasarım / bilgisayar destekli üretim (CAD/CAM) teknolojisindeki ve materyal bilimindeki ilerlemeler, günümüzde anterior ve posterior dişler için estetik restorasyonların yapımını olanaklı hale getirmiştir. Ancak, üretilen yeni CAD/CAM materyallerinin marjinal ve internal adaptasyonları ile ilgili yeterince veri yoktur. Bu çalışmanın amacı; hastabaşı CAD/CAM sistemi ile üretilen posterior tam seramik restorasyonların marjinal ve internal adaptasyonlarını değerlendirmektir. Gereç ve Yöntem: Yapay bir alt sol birinci büyükazı dişi standart diş kesimi kurallarıyla prepare edildi ve prepare edilen dişlerden standart modeller oluşturuldu. Tam seramik restorasyonlar (n=10), yedi farklı CAD/CAM materyalinden üretildi (IPS e.max CAD, Lava Ultimate, Incoris TZI, Incoris ZI, Vita Suprinity, Vita Enamic, ve GC Cerasmart). Örneklere ait marjinal ve internal adaptasyonlar; ince bir bistüri yardımıyla kesilen silikon replikalardan ölçüldü. Day materyali ve restorasyonun iç yüzeyi arasındaki boşluğu temsil eden silikon replika 50× büyütmeye sahip ışık mikroskobunda dijital kamera ile incelendi. Her bukkal-lingual bölümden dört referans noktası ve her mezial-distal bölümden sekiz referans noktası belirlenerek incelendi. Sonuçlar iki yönlü varyans analizi ve Tukey HSD testi ile değerlendirildi (α=0.05). Bulgular: Marjinal-internal alanlarda görülen değerler genellikle marjinal alanlardaki değerlerden yüksek bulundu. Materyaller arasında anlamlı farklılıklar bulundu. İstatistik analiz sonucunda; materyal tipi ve referans noktasının lokalizasyonu arasında interaksiyon bulundu (p<0.05). En düşük değerler aksiyel alanlarda ve en yüksek değerler ise oklüzal alanlarda gözlendi. Sonuç: Bütün materyaller klinik olarak kabul edilebilir derecede marjinal ve internal uyumsuzluk gösterdi.

🔖

Cite This Article

GÜNGÖR, M. B., DOĞAN, A., BAL, B. T., NEMLİ, S. K. (2017). Evaluation of marginal and internal adaptations of posterior all-ceramic crowns fabricated with chair-side CAD/CAM system: an in vitro study. Acta Odontologica Turcica, Cilt: 35 - Sayı: 1, 1–8. https://ajindex.com/articles/265248

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (14)

  1. Mously HA, Finkelman M, Zandparsa R, Hirayama H. Marginal and internal adaptation of ceramic crown restorations fabricated with CAD/CAM technology and the heat-press technique. J Prosthet Dent 2014;112:249-56. Karlsson S. The fit of Procera titanium crowns. An in vitro and clinical study. Acta Odontol Scand 1993;51:129-34.
  2. Souza RO, Ozcan M, Pavanelli CA, Buso L, Lombardo GH, Michida SM, et al. Marginal and internal discrepancies related to margin design of ceramic crowns fabricated by a CAD/CAM system. J Prosthodont 2012;21:94-100.
  3. Rudolph H, Luthardt RG, Walter MH. Computer-aided analysis of the influence of digitizing and surfacing on the accuracy in dental CAD/CAM technology. Comput Biol Med 2007;37:579-87.
  4. Renne W, McGill ST, Forshee KV, DeFee MR, Mennito AS. Predicting marginal fit of CAD/CAM crowns based on the presence or absence of common preparation errors. J Prosthet Dent 2012;108:310-5.
  5. Martins LM, Lorenzoni FC, Melo AO, Silva LM, Oliveira JL, Oliveira PC, et al. Internal fit of two all-ceramic systems and metal-ceramic crowns. J Appl Oral Sci 2012;20:235-40.
  6. Lins L, Bemfica V, Queiroz C, Canabarro A. In vitro evaluation of the internal and marginal misfit of CAD/CAM zirconia copings. J Prosthet Dent 2015;113:205-11.
  7. Pradies G, Zarauz C, Valverde A, Ferreiroa A, Martínez-Rus F. Clinical evaluation comparing the fit of all-ceramic crowns obtained from silicone and digital intraoral impressions based on wavefront sampling technology. J Dent 2015;43:201-8.
  8. Wettstein F, Sailer I, Roos M, Hämmerle CH. Clinical study of the internal gaps of zirconia and metal frameworks for fixed partial dentures. Eur J Oral Sci 2008;116:272-9.
  9. Contrepois M, Soenen A, Bartala M, Laviole O. Marginal adaptation of ceramic crowns: a systematic review. J Prosthet Dent 2013;110:447-54.
  10. Kokubo Y, Tsumita M, Kano T, Sakurai S, Fukushima S. Clinical marginal and internal gaps of zirconia all-ceramic crowns. J Prosthodont Res 2011;55:40-3.
  11. Gracis S, Thompson VP, Ferencz JL, Silva NR, Bonfente EA. A new classification system for all-ceramic and ceramic-like restorative materials. Int J Prosthodont 2015;28:227-35.
  12. Nakamura T, Dei N, Kojima T, Wakabayashi K. Marginal and internal fit of Cerec 3 CAD/CAM all-ceramic crowns. Int J Prosthodont 2003;16:244-8.
  13. Nakamura T, Tanaka H, Kinuta S, Akao T, Okamoto K, Wakabayashi K, et al. In vitro study on marginal and internal fit of CAD/CAM all-ceramic crowns. Dent Mater J 2005;24:456-9.
  14. Iwai T, Komine F, Kobayashi K, Saito A, Matsumura H.