Influence of repeated firings on marginal, axial, axio-occlusal, and occlusal fit of metal-ceramic restorations fabricated with different techniques

Önöral, Özay; Ulusoy, Mutahhar; Şeker, Emre; Etikán, Ílker

doi:10.1016/j.prosdent.2017.11.022

Cited by 21 publications

(32 citation statements)

References 28 publications

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“…Inadequate internal fit can cause low resistance of the restoration and decrease fracture resistance. 20 21 According to the study by McLean and von Fraunhofer, 22 it is stated that 120 µm marginal discrepancy is clinically acceptable. However, different marginal discrepancy values including 100 µm 23 24 and 75 µm 25 were also stated.…”

Section: Introductionmentioning

confidence: 99%

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In-vitro evaluation of marginal and internal fit of 3-unit monolithic zirconia restorations fabricated using digital scanning technologies

Özal¹,

Ulusoy²

2021

J Adv Prosthodont

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PURPOSE This study aimed to compare the marginal and internal fit of 3-unit monolithic zirconia restorations that were designed by using the data obtained with the aid of intraoral and laboratory scanners. MATERIALS AND METHODS For the fabrication of 3-unit monolithic zirconia restorations using impressions taken from the maxillary master cast, plaster cast was created and scanned in laboratory scanners (InEos X5 and D900L). The main cast was also scanned with different intraoral scanners (Omnicam [OMNI], Primescan [PS], Trios 3 [T3], Trios 4 [T4]) (n = 12 per group). Zirconia fixed partial dentures were virtually designed, produced from presintered block, and subsequently sintered. Marginal and internal discrepancy values (in µm) were measured by using silicone replica method under stereomicroscope. Data were statistically analyzed by using 1-way ANOVA and Kruskal Wallis tests ( P <.05). RESULTS In terms of marginal adaptation, the measurements on the canine tooth indicated better performance with intraoral scanners than those in laboratory scanners, but there was no difference among intraoral scanners ( P <.05). In the premolar tooth, PS had the lowest marginal (86.9 ± 19.2 µm) and axial (92.4 ± 14.8 µm), and T4 had the lowest axio-occlusal (89.4 ± 15.6 µm) and occlusal (89.1 ± 13.9 µm) discrepancy value. In both canine and premolar teeth, the D900L was found to be the most marginally and internally inconsistent scanner. CONCLUSION Within the limits of the study, marginal and internal discrepancy values were generally lower in intraoral scanners than in laboratory scanners. Marginal discrepancy values of scanners were clinically acceptable (< 120 µm), except D900L.

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Section: Introductionmentioning

confidence: 99%

“…When the marginal and internal fit studies are examined, monolithic zirconia restorations are not frequently encountered. In most studies, bi-layered zirconia restorations 26 27 and metal-supported restorations 21 were considered. In addition, single unit crowns 20 28 were commonly studied.…”

Section: Introductionmentioning

confidence: 99%

In-vitro evaluation of marginal and internal fit of 3-unit monolithic zirconia restorations fabricated using digital scanning technologies

Özal¹,

Ulusoy²

2021

J Adv Prosthodont

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“…As in the previous case, the wall of the capsule forms protrusions into its cavity. and the capsule formed at the end of the experiment around the implanted sample from the «Shot-alloy» alloy, and during the implantation of the «Cerium» alloy, healing the wound surface and the formation of a connective tissue capsule occurs fully than in previous cases [2,3,10].…”

Section: Discussionmentioning

confidence: 96%

“…Currently, more than 300 types of metal structures are used for the manufacture of metal-ceramic structures. For a long time, the main structural materials for fixed dentures are cobalt-chromium and nickel-chromium alloys, veneered with ceramic materials [7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of Histotoxicity Indicators of Metal Alloys for the Manufacture of Metal Ceramic Dental Constructions

et al. 2021

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The aim: To carry out a comparative assessment of metal alloys for the manufacture of metal-ceramic constructions of dentures by determining the indicator of their histotoxicity. Materials and methods: To identify the effect of metal alloys on cobalt and nickel bases on the tissue of organism, we carried out an experimental-morphological study of standard samples of metal alloys “Shot-alloy”, “Remanium-2000”, “Cerium”, “Dent-NCB”, “Cellite-N”. Results: A careful histological analysis of the capsules formed around the metal alloy samples during two periods of the experiment showed that the healing time of the subcutaneous tissue was not the same. The most complete healing, that is, the formation of mature fibrous connective tissue, occurred during the implantation of the cobaltbased alloy “Remanium-2000” and the capsule formed at the end of the experiment around the implanted sample from the “Shot-alloy” alloy, and during the implantation of the “Cerium” alloy, healing the wound surface and the formation of a connective tissue capsule occurs fully than in previous cases. Conclusions: The analysis of the performed experiment testifies in favor of the point of view that the speed and quality of healing of damaged subcutaneous tissue upon the introduction of implanted research alloys depend largely on the individual chemical components that make up the alloys, or on their combination.

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“…Geleneksel kayıp mum tekniği ve döküm yöntemi metalseramik restorasyon altyapılarının üretiminde halen yaygın olarak kullanılan bir üretim yöntemidir. 12,13 Ekonomik nedenlerden dolayı metal altyapıların üretiminde sıklıkla baz metal alaşımları kullanılmaktadır. 8,9,14 Ancak baz metal alaşımları oldukça yüksek erime derecelerine sahip olmakla birlikte e kalın oksit tabakaları oluşabilmektedir.…”

Section: Introductionunclassified

Lazer Tarama Hızının Lazer Sinterleme ile Üretilen Metal Altyapıların Porselen Bağlantısı Üzerindeki Etkisi

Kaleli

Ural

Küçükekenci

2020

Kocaeli Üniversitesi Sağlık Bilimleri Dergisi

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Bu çalışmanın amacı; farklı tarama hızlarında lazer sinterleme ile üretilen kobalt-krom (Co-Cr) metal altyapıların porselen bağlantılarının değerlendirilmesidir. Yöntem: Uluslararası Standartlar Teşkilatı (ISO) 9693-1 standardında belirtilen ölçütler doğrultusunda 3 farklı Co-Cr metal altyapı grubu (n=10) üretilmiştir. Grup C, geleneksel döküm yöntemi ile; grup LS3, 3 m/sn tarama hızında DMLE yöntemi ile; grup LS6, 6m/sn tarama hızında DMLE yöntemi ile üretilmiştir. Her gruptan birer metal altyapı yüzey morfolojilerinin değerlendirilmesi amacıyla taramalı elektron mikroskobu (SEM) altında incelenmiştir. SEM analizi sonrasında ISO 9693-1 doğrultusunda tüm örneklerin porselen fırınlamaları gerçekleştirilmiştir. Fırınlamalar tamamlandıktan sonra tüm öneklere 3 nokta bükme testi uygulanmıştır. Elde edilen veriler istatistiksel olarak 0,05 anlamlılık düzeyinde değerlendirilmiştir. Bulgular: En düşük porselen bağlantı dayanımı değerleri grup LS6'dan elde edilmesine rağmen bu farklılık istatistiksel olarak anlamlı bulunmadı (p>0,05). Sonuç: Lazer tarama hızının lazer sinterleme ile üretilen metal altyapıların porselen bağlantı dayanımını etkilemediği görüldü.

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Influence of repeated firings on marginal, axial, axio-occlusal, and occlusal fit of metal-ceramic restorations fabricated with different techniques

Cited by 21 publications

References 28 publications

In-vitro evaluation of marginal and internal fit of 3-unit monolithic zirconia restorations fabricated using digital scanning technologies

In-vitro evaluation of marginal and internal fit of 3-unit monolithic zirconia restorations fabricated using digital scanning technologies

Comparative Evaluation of Histotoxicity Indicators of Metal Alloys for the Manufacture of Metal Ceramic Dental Constructions

Lazer Tarama Hızının Lazer Sinterleme ile Üretilen Metal Altyapıların Porselen Bağlantısı Üzerindeki Etkisi

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