Buradasınız

Anasayfa » Content

SİLİKON ESASLI ÖLÇÜ MADDELERİNİN ZAMANA BAĞLI ÇİZGİSEL BOYUTSAL DEĞİŞİMİ

TIME-DEPENDENT DIMENSIONAL VARIABILITY OF SILICONE IMPRESSION MATERIALS

Journal Name:

  • İstanbul Üniversitesi Diş Hekimliği Fakültesi Dergisi

Publication Year:

  • 1994

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
This investigation examined the time-dependent linear dimensional variability of three condensation and one addition silicone impression materials prepared as free samples and as bonded to an acrylic tray material. Samples were prepared according to a die described in ADA specification no. 19. The dimensional changes were evaluated by using an Gaetner traveling microscope at 10 min, 1 ho-ur(h), 2h,24h, 48 h, and 1 week time intervals. The time-dependent changes were compared with the dimensions of a standard brass die using a paired t test and tlie difference between the impression materials analyzed using Tukey's range test, all atp<0.05 level. The time-dependent shrinkage of condensation silicones showed significance in all test groups. However, condensation silicones showed no significance within each other, while significance exist between addition and condensation silicones. It was concluded that condensation silicones should be poured as soon as possible. Addition silicone displayed acceptable time-dependent stabilitiy even up to one week
Bookmark/Search this post with
Abstract (Original Language): 
Bu çalışmada üçü kondansasyon ve biri ilave polimerizas-yon silikonu olan ölçü maddelerininin zamana bağlı çizgi-sel boyutsal değişimi serbest halde ve kaşık akriliğine yapışmış durumda iken incelenmiştir. Deney örnekleri ADA'nın 19 nolu spesifıkasyonuna uygun bir pirinç kalıpta hazırlamış ve hareketli bir Gaetner mikroskobu ile 10 dak, 1 saat(s), 2 s, 24 s, 48 s ve 1 hafta zaman dilimlerinde ölçümleri yapılmıştır. Zamana bağlı verilerin değerlendirilmesi için eşlendirilmiş dizi uygulanmış, ölçü maddeleri ise Tukey testi ile karştlaştırtlmıştır (p<0.05). Kondansasyon silikonları standart pirinç kalıp boyutlarına kıyasla, tüm gruplarda anlamlı olarak zamana bağlı boyutsal küçülme göstermiştir. Materyaller karşılaştırıldığında kondansasyon silikonları arasında fark saptanmamış, ancak kondansasyon ve ilave silikonlar farklı bulunmuştur. Sonuç olarak kondansasyon silikonlarının ölçü almayı takiben hemen dökülmeleri gerektiği anlaşılmıştır, ilave poli-merizasyon silikonu bir haftalık zaman süresince kabul edilebilir düzeyde boyutsal değişim göstermiştir.
FULL TEXT (PDF): 
PDF icon arastirmax-silikon-esasli-olcu-maddelerinin-zamana-bagli-cizgisel-boyutsal-degisimi.pdf
  • 2
97
103
  • Turkish

REFERENCES

References: 

1. Beli JW, Davies EH, Fraunhofer JA. The dimensional changes of elastomeric impression materials under various conditions of humidity/of Dent 1975: 4 :73-82.
2. Ciesco JN, Malone WFP, Sandrik JL, Mazur B. Comparison of elastomeric impression materials used in fixed prosthodon-tics. JProsthet Dent 1981: 45: 89-94.
3. Counsil on Dental Materials and Devices: Revised American Dental Association Specification No. 19 for Non-Aqueous, Elastomeric Dental Impression Materials/Am Dent Assoc 1977 94: 733-41.
4. Davis GB, Moser JB, Brinsden LDS. The bonding properties of elastomer tray adhesives. J Prosthet Dent 1976: 36:278¬85.
5. Drummond JL, Randolph RG. Comparison study of elastomeric impression materials. J Prosthet Dent 1986: 56:188-92.
6. Hogarts WR, Agar JR. The bond strength of elastomer tray adhesives to thermoplastic and acrylic resin tray materials./ Prosthet Dent 1992: 67: 541-43.
7. Johnson GH, Craig RG. Accuracy of addition silicones as a function of technique. J Prosthet Dent 1986: 55: 197-203.
8. Lacy AM, Beliman T, Fukui H, Jendresen MD. Time dependent
accuracy of elastomer impression materials. Part I: Condensation silicones./Prosthet Dent 1981: 45: 209-14.
9. Lacy AM, Fukui H, Bellman T, Jendresen MD. Time dependent accuracy of elastomer impression materials. Part II: Pol-yether, polysulfides and polyvinylsUoxane. / Prosthet Dent 1981:45:329-33.
10. Langenwalter EM, Aquilino SA, Turner KA. The dimensional stability of elastomeric impression materials following disinfection JProsthet Dent 1990: 62:270-76.
11. Mansfield MA, Wilson HJ. Elastomeric impression mate-nalsBritDentJ 1975:139: 267-72.
12. Marcinak CF, Draughn RA. Linear dimensional changes in addition curing silicone impression materials. / Prosthet Dent 1982:47:411-13.
13. Phillips RW. Skinner's Science of dental materials. 9th ed. Philadelphia: WB Saunders Co., 1991: 135-50.
14. Stackhouse JA. A comparison of elastic impression materials. J Prosthet Dent 1975: 34: 305-13.
15. Wright PS. Composition and properties of soft lining materials for acrylic deatmes.J Dent Res 1981: 9:210-23.

Thank you for copying data from http://www.arastirmax.com