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TAMİR EDİLMİŞ AKRİLİKLERİN KIRILMA DİRENCİ ÜZERİNE TAMİR MATERYALİNİN »KIRIK YÜZEY ŞEKLİNİN VE SAKLAMA ORTAMININ ETKİSİNİN İNCELENMESİ

EVALUATION OF EFFECT OF REPAIR SURFACE DESIGN, REPAIR MATERIAL AND STORAGE METHOD ON FRACTURE STRENGTH OF REPAIRED ACRYLIC DENTURE RESIN

Journal Name:

  • Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

Publication Year:

  • 1996

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Thi& stud y investigated the fracture strength of repaired test specimens with heat-cured and autopolimerizing acrylic resin.TJiree repair joints were prepare d;Butt,round and Jap.The repaired and unrepaired specimens were tested immediately after the set of the material .after 28 days of dry storage,aiîd after 28 days ,7 days ,56 days.of wet storage at room temperature (20°C),Each repaired and unrepaired specimens were subjected to an increasing load with a Housefield electronic tension machine with a crosshead speed of 5 mmYmin.The analysis of" variance was used to test for differences in the four groups studied.Duncan test was performed to determine which values were significantly different.According to statistical data that we obtained from the study thai the repaired test specimens were weaker than those unrepaired and,me strength of repairs made with heat-cured acrylic resin were significantly greater than those with autopoly meri zing acrylic resin.The fractured specimens, from the 28 days wet storage group were demonstrated statistically similar strength in the 7 days wet group and significantly greater than those in the 56 days of wet storage and in the 28 days of dry storage.Thc strength of repairs made with round joint design was greater than those with butt and lap joint design,but this increas was not statistically significantThc results revealed thai repair material and storage method were effected on the transverse strength of repaired acrylic resin
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Abstract (Original Language): 
Bu çalışmada, soğuk vc sıcak akrilik resinlerîe tamir edilmiş akrilik örneklerin kırılma dirençleri incelenmiştir. Tamir için; Dliz^anm ay ve tersine basamaklı üç tip kırık şekli hazırlarımıştır.Bir kısım örnekler lamir edilmeden kontrol grubu olarak aynlmıştır.Tamir edilmiş ve tamir edilmemiş akrilik örnekler test edilmeden önce 28 gün kuru ortamda (Oda ısısında normal atmosferde), 28 gün, 7 gün ve 56 gün tiistile suda (Oda ısısında) bekletilmiştir. Test için Housefield çekmc-sıkıştırma makinası kullanılmıştı r.Örnekl e re 5 mm/dakika kafa hızı ile kmlıncaya kadar kuvvet uygulanmısttrJJört grup arasmdaki kırılganfık farklılığı istatistiksel olarak varyans analizine tabi tutulmuştur. Aynca değerler arasında farklılık olup olmadığım saptamak için Duncan çoklu karşılaştırma testi yapılmıştır. Elde edilen istatistiksel değerlerin sonucunda, tamir edilmiş akriliklerin kırılma direncinin tamir edilmemişlere göre azaldığı, ısı ile sertleşen akriliklerle tamir edilen örneklerin soğuk akriiiklcrle tamir edilenlerden daha fazla kırılmaya dirençli olduğu bulunmuştur. 28 gün ile 7 gün suda bekletilen örnekîerin kırılma dirençlerinin farklı olmadığı, ancak 56 gün suda ve 28 gün kum ortamda bekletilenlere göre fazla olduğu saptanmıştır. Yarım ay kınk şeklinin yüksek kırılma direnci göstermesine rağmen, bu durumun istatistiksel olarak önemli olmadığı görülmüştiir.Sonuçta akrilik resinlerin tamir dirençleri üzerine saklama ortamının vc tamir materyalinin daha etkili oiduğujarıfc şeklinin ise istatistiksel olarak fazla önemli olmadığı saplanmıştır
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PDF icon arastirmax-tamir-edilmis-akriliklerin-kirilma-direnci-uzerine-tamir-materyalinin-kirik-yuzey-seklinin-saklama-ortaminin-etkisinin-incelenmesi.pdf
  • 1
31-36
  • Turkish

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