Bazı yeni sabitleyici dental sistemler ile desteklenen seramik kronların kırılma yükü

Yıl 2018, Cilt: 35 Sayı: 2, 33 - 37, 12.04.2018

İsil Cekic Nagas , Emre Nagas , Ferhan Egilmez , Gulfem Ergun , Pekka Vallittu Lippo Lassila

https://doi.org/10.17214/gaziaot.327867

Cited By: 1

Öz

Amaç: Bu
çalışmanın amacı, bilgisayar yardımlı tasarım/bilgisayar yardımlı imalat
(BYT/BYİ; CAD/CAM) anterior diş endo-kron ve fiberle güçlendirilmiş kompozit
(FGK) esaslı post-kor restorasyonunun kırılma yükünün değerlendirilmesidir.

Gereç ve
Yöntem: CAD/CAM ile kanin kök modeli şeklinde zirkonya model (Ice
Zirconia, ZirkonZahn GmBH, Bruneck, Italy) üzerinde toplam 40 post-kor destekli
kron ve endokron yapıldı. Statik taşıma yükü kapasitesi değerlendirmesi şu
restorasyon gruplarında yapıldı: Grup 1: CAD/CAM tek parça FGK post-kor-kron
sistemi (deneysel CAD/CAM FGK blok) ile desteklenen zirkonya kron (Prettau
anterior, ZirkonZahn GmBH); Grup 2: Devamlı olmayan FGK kor (EverX posterior,
GC Corp., Tokyo, Japan) ve FGK post (GC Corp.) ile desteklenen zirkonya kron
(Prettau anterior); Grup 3: Zirkonya endokron (Prettau anterior) ve Grup 4:
Lityum disilikat seramik endokron (IPS e.max CAD, Ivoclar Vivadent AG, Schaan,
Liechtenstein) (n = 10/grup). Kronların/endokronların zirkonya kök modele
adeziv simantasyonunu takiben, universal test cihazında dişlerin uzun eksenine
45° olacak şekilde yük uygulandı. Kırık modları görsel olarak değerlendirildi.
İstatistiksel analiz tek-yönlü ANOVA ve Tukey post-hoc testleri ile
gerçekleştirildi.

Bulgular: Grupların
kırılma yükü değerleri arasında anlamlı farklılık gözlendi (p<0.05). Grupların
istatistiksel olarak sıralanması şu şekildedir: Grup 3 (1168 ± 141 N) > Grup
4 (721 ± 96 N) ≥ Grup 1 (680 ± 86 N) > Grup 2 (534 ± 36 N).

Sonuç: Endokron
monoblok restorasyonlar, fiberle güçlendirilmiş post-kor restorasyon destekli
kron restorasyonlara alternatif olarak kullanılabilir.

Anahtar Kelimeler

Bilgisayar yardımlı tasarım, bilgisayar yardımlı imalat, kök çivisi tekniği, seramikler

Fracture load of ceramic crowns supported by some novel anchoring dental systems

Öz

Objective: This study aimed to evaluate the fracture load
of endocrown restorations and fiber-reinforced composites (FRCs) fabricated
through computer-aided design/computer-aided manufacturing (CAD-CAM) for
post–cores of anterior teeth.

Materials and Method: Forty post–core-supported crowns and endocrowns
were fabricated through CAD-CAM on a canine root zirconia model (Ice Zirconia,
ZirkonZahn GmBH, Bruneck, Italy). The static load-bearing
capacity was measured on the following restoration groups: Group 1: zirconia
crown (Prettau anterior, ZirkonZahn GmBH) retained with CAD-CAM one-piece FRC post-core
crown system (experimental CAD-CAM FRC block); Group 2: zirconia crown (Prettau
anterior) retained with FRC post (GC Corp., Tokyo, Japan) with discontinuous
fiber composite (EverX posterior, GC Corp) core; Group 3: zirconia endocrown
(Prettau anterior); and Group 4: lithium disilicate ceramic endocrown (IPS
e.max CAD, Ivoclar Vivadent AG, Schaan, Liechtenstein) (n = 10/per group).
After the adhesive cementation of crowns/endocrowns to the zirconia root model,
a load was applied at 45° to the long axis of the teeth and measured using a
universal testing machine. The fracture modes were visually examined. The statistical
analyses were performed using one-way ANOVA and Tukey post-hoc tests (p <
0.05).

Results: The fracture
load significantly differed among the groups (p < 0.05) and was ranked as
follows: Group 3 (1168 ± 141 N) > Group 4 (721 ± 96 N) ≥ Group 1 (680 ± 86
N) > Group 2 (534 ± 36 N).

Conclusion: Endocrown monoblock restorations can be used as
an alternative to fiber-reinforced post–core supported crown restorations.

Anahtar Kelimeler

Ceramics, Computer-aided manufacturing, Post and core technique, Computer-aided design, Post and core technique

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