ISIL DÖNGÜNÜN HASTA BAŞINDA KULLANILAN SERT ASTAR MATERYALLERİ İLE ASTARLANAN AKRİLİK REZİNLERİN TRANSVERS DAYANIMINA ETKİSİ

Yıl 2017, Cilt: 27 Sayı: 3, 173 - 180, 03.12.2017

Merve Bankoğlu Güngör , Seçil Karakoca Nemli

https://doi.org/10.17567/ataunidfd.381351

Öz

Amaç: Bu çalışmanın amacı, ısısal farklılıkların hasta
başında kullanılan sert astar materyalleri ile astarlanan akrilik rezinlerin
transvers dayanımına etkisini değerlendirmektir.

Gereç ve
Yöntem:
İki farklı sert astar materyali ve geleneksel protez kaide rezini kullanılarak
beş adet deney grubu oluşturuldu. Birinci grup, muflalama tekniğiyle üretilen
geleneksel akrilik kaide rezininden (Akrilik rezin), ikinci grup görünür ışıkla
polimerize olan rezinden (Triad), üçüncü grup otopolimerizan rezinden
(Tokuyama), dördüncü grup görünür ışıkla polimerize olan rezin ile astarlanan
akrilik rezinden (Triad Reline) ve beşinci grup ise otopolimerizan rezin ile
astarlanan akrilik rezinden (Tokuyama Reline) oluşmaktadır. Her bir deney
grubunda 65×10×3 mm³ boyutunda
hazırlanan örnekler, rastgele kontrol ve ısıl döngü grubu olarak  ikiye ayrıldı (n=10). Isıl döngü işlemi;
sıcaklığı 5⁰C-55⁰C arasında değişen su banyolarında 5000
kez yapıldı. Sonrasında örneklerin transvers dayanım değerleri tespit edildi.
Örneklerin transvers dayanımına ait veriler, iki yönlü varyans analizi ile
değerlendirildi ve gruplar arasındaki farklılıkların tespit edilmesi için  Tukey’s HSD post hoc testi kullanıldı
(α=0.05).

Bulgular: Isıl döngü işleminin
bütün gruplarda transvers dayanım değerlerini azalttığı belirlendi. Transvers
dayanım astarlama yapılmayan akrilik protez kaidesinde en yüksek, astarlama
yapılan kaidelerde ise daha düşük bulundu. Otopolimerizan hasta başı sert
astarlama materyali (Tokuyama) ile astarlanan kaide, ışıkla polimerize
materyale (Triad) göre daha yüksek transvers dayanım gösterdi.

Sonuç: Protez kaide ve astar materyallerinin dayanımı ısıl
değişkenlerden etkilenmekte olup, otopolimerizan astar materyali ile astarlanan
akrilik rezin, görünür ışıkla polimerize olan astar materyalleriyle astarlanan
rezine oranla daha yüksek dayanım göstermektedir.

Anahtar
Kelimeler: Akrilik rezinleri, protez
astarlama, polimerizasyon

EFFECT OF THERMOCYCLING
ON THE TRANSVERSE STRENGTH OF ACRYLIC RESINS RELINED WITH CHAIRSIDE HARD RELINING
MATERIALS

ABSTRACT

Aim: The purpose of the present study
is to evaluate effect
of thermal cycling on the transverse strength of acrylic resins relined with
chair side hard relining materials.

Materials and Methods: Five experimental groups were generated using two
different hard relining and conventional denture base resin materials. Groups
were consisted of conventional acrylic denture base resin (Acrylic resin),
visible light polymerized resin (Triad), otopolymerized resin (Tokuyama), acrylic
resin relined with visible light polymerized resin (Triad Reline), and acrylic
resin relined with  otopolymerized resin
(Tokuyama Reline), respectively. For each experimental group, specimens with
dimensions of  65×10×3 mm³  were divided into two
groups as control and thermocycling (n=10). Thermocycling was performed for
5000 times in baths held 5⁰C-55⁰C water. Then, transverse
strength of the specimens were measured. Transverse strength data of the
specimens were analyzed using two-way analysis of variance and pairwise
comparisons among the groups were evaluated with Tukey’s HSD test (α=0.05).

Results: Thermocycling decreased the transvers strength values of
the materials in all groups. The transvers strength values were higher in non relined
acrylic resin group, and lower in relined groups. Otopolymerized hard relining
material (Tokuyama Reline) had higher transvers strength values than visible
light polimerized resin (Triad Reline).

Conclusion: Denture base and reline resins were affected by thermal
differences. Acrylic resins relined with otopolymerized relining material
showed higher strength than acrylic resin relined with visible light polimerized
resin.

Key Words:
Acrylic resins, denture
relining, polymerization

Anahtar Kelimeler

Akrilik rezinleri, protez astarlama

Kaynakça

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