TY - JOUR T1 - Effect of storage time on tear strength of extended-pour irreversible hydrocolloid impression materials TT - Effect of Storage Time on Tear Strength of Extended-Pour Irreversible Hydrocolloid Impression Materials AU - Şahin, Volkan AU - Jodati, Hossein AU - Evis, Zafer PY - 2018 DA - December DO - 10.22312/sdusbed.326886 JF - Süleyman Demirel Üniversitesi Sağlık Bilimleri Dergisi PB - Süleyman Demirel University WT - DergiPark SN - 2146-247X SP - 26 EP - 30 VL - 9 IS - 3 LA - en AB - Objective:The aim of this in vitro study was to evaluate the effect of prolonged storagetimes on the tear strength of extended-pour irreversible hydrocolloidimpression materials. Material and Method: Eighty four specimens were fabricated from five commercial extended-pour irreversiblehydrocolloid impression materials (BluePrint Xcreme, Hydrogum 5, Kromopan, Alginmax and Alginelle) as well as one experimental formula inaccordance with the ISO 21563:2013 standardeffective for irreversible hydrocolloid impression materials. Specimenswere randomly divided in two groups for each impression material (n=7) andsubjected to tear strength test immediately (base line) or after 120 hours ofstorage. Tear strength values were obtainedin N/mm and data were analysed withtwo-way ANOVA (irreversible hydrocolloid brand, storage time). Multiplecomparisons were performed with Tukey’s test (p=0.05). Results:The tear strength of the extended-pourirreversible hydrocolloid impression materials were affected by brand (p<0.0001)and brand-storage time interaction (p=0.005). Storage time did not influencethe tear strengths of the extended-pour irreversible hydrocolloid impressionmaterials tested except Alginmax whose mean tear strengths increased after 120hours of storage (p<0.05). At baseline measurements Blueprint Xcreme provided the highest mean tear strengthvalues (1.08±0.19 N/mm) whereas Alginelle provided the lowest mean tear strength values(0.51±0.3 N/mm). Hydrogum 5 provided the highest tear strength values after 120hours of storage (1.15± 0.12 N/mm)whereas Alginelle provided the lowestmean tear strength values (0.55±0.04 N/mm). Conclusion.All commercialextended-pour irreversible hydrocolloid impression materials tested maintainedtheir tear strengths after 120 hours of storage. KW - Tear strength KW - irreversible hydrocolloid KW - impression material N2 - Amaç:Bu in-vitro çalışmanın amacı; uzatılmış saklama sürelerinin, uzatılmış modelelde etme süresine sahip irreversible hidrokolloid ölçü malzemelerinin yırtılmadayanımı üzerine etkisini incelemektir. Materyal-Metod: Beşticari (BluePrintXcreme, Hydrogum 5, Kromopan, Alginmaxve Alginelle) ve bir özel formüleedilmiş uzatılmış model etme süresinesahip irreversible hidrokolloid ölçü malzemesi kullanılarak ISO 21563:2013standartlarına uyumlu seksen dört adet numune hazırlanmıştır. Her bir ölçü malzemesine sait numuneler rastgele iki gruba ayrılmış (n=7) ve hemenveya 120 saatlik saklama süresi sonunda yırtılma testine tabitutulmuşlardır. Yırtılma dayanımı değerleri N/mm cinsinden ifade edilmiş veveriler iki yönlü varyans analizi testi(irreversible hidrokolloid markası, saklama süresi) kullanılarak analizedilmiştir. Çoklu karşılaştırmalara, Tukey testi kullanılarak yapılmıştır (p=0.05).Bulgular:Uzatılmış model etme süresine sahip irreversiblehidrokolloid ölçü malzemelerinin yırtılma dayanımları, irreversiblehidrokolloid markası parametresi (p<0.0001) ve irreversiblehidrokolloid markası-saklama süresi etkileşimi tarafından etkilenmiştir (p=0.005).tarafından etkilenmiştir Saklama süresi, uzatılmış model etme süresinesahip irreversible hidrokolloid ölçü malzemelerinin yırtılma dayanımlarını, 120saat saklama süresi sonunda yırtılma dayanımı artan Alginmax ölçü malzemesi haricinde etkilememiştir (p<0.05). Hemen yapılan yırtılma dayanımı testinde BlueprintXcreme en yüksek ortalama yırtılma dayanımı değerlerine sahipken (1.08±0.19 N/mm) Alginelle en düşükortalama yırtılma dayanımı değerlerini göstermiştir (0.51±0.3 N/mm). 120saat saklama süresi sonunda Hydrogum 5 en yüksek ortalama yırtılma dayanımıdeğerlerine sahipken (1.15± 0.12 N/mm) Alginelle en düşük ortalama yırtılma dayanımı değerlerinigöstermiştir (0.55±0.04 N/mm). Sonuç: Test edilen uzatılmışmodel elde etme süresine sahip ticari irreversiblehidrokolloid ölçü malzemelerinin tümü,yırtılma dayanımlarını 120 saatlik saklama süresi sonunda korumuştur. CR - 1. Anusavice K, Shen, C, Rawls HR. Phillips’ science of dental materials. 12th ed. St. Louis: Saunders Elsevier; 2013. p. 151. CR - 2. Nandini VV, Venkatesh KV, Nair KC. Alginate impressions: a practical perspective. J Conserv Dent 2008; 11: 37-41. CR - 3. Phoenix RD, Rodney D. Stewart’s clinical removable partial prosthodontics. 3rd ed. Hanover: Quintessence; 2002. p. 1627. CR - 4. Kaur G, Jain P, Uppal M, Sikka R. Alginate impression materials: from then till now. Heal Talk J Clin Dent 2012; 5:38-9. CR - 5. Craig RG, Robert G. Restorative dental materials. 11th ed. St. Louis: Mosby; 2002. p. 12. CR - 6. Lee EA. Impression material selection in contemporary fixed prosthodontics: technique, rationale, and indications. Compend Contin Educ Dent 2005; 26: 780-9. CR - 7. Ciapetti G, Granchi D, Stea S, et al. Cytotoxicity testing of materials with limited in vivo exposure is affected by the duration of cell-material contact. J Biomed Mater Res 1998; 42: 485–90. CR - 8. Vrijhoef MMA, Battistuzzi, PG. Tear energy of impression materials. J Dent 1986; 175-7. CR - 9. Lawson NC, Burgess JO, Litaker M. Tear strength of five elastomeric impression materials at two setting times and two tearing rates. J Esthet Restor Dent 2008; 20: 186-94. CR - 10. Marshak BL, Cardash HS, Ben-Ur Z. Incidence of impression material found in the gingival sulcus after impression procedure for fixed partial dentures. J Prosthet Dent 1987; 57: 306-8. CR - 11. Donovan JE, Chee WW. A review of contemporary impression materials and techniques. Dent Clin North Am 2004; 48: 445-70. CR - 12. Miller MW. Syneresis in alginate impression materials. Br Dent J 1975; 139: 425-30. CR - 13. Jamani KD. The effect of pouring time and storage condition on the accuracy of irreversible hydrocolloid impressions. Saudi Dent J 2002; 14: 126-30. CR - 14. Walker MP, Burckhard J, Mitts DA, Williams KB. Dimensional change over time of extended-storage alginate impression materials. Angle Orthod 2010; 80: 1110-5. CR - 15. Chai J, Takahashi Y, Lautenschlager E. P. Clinically relevant mechanical properties of elastomeric impression materials. Int J Prosthodont 1998; 11: 219–23. CR - 16. Lu H, Nguyen B, Powers J. Mechanical properties of 3 hydrophilic addition silicone and polyether elastomeric impression materials. J Prosthet Dent 2004; 92: 151–54. CR - 17. Webber RL, Ryge G. The determination of tear energy of extensible materials of dental interest. J. Biomed Mater Res 1968; 2: 281–96. CR - 18. Huynh L, Xie DX, Shellard E. Mechanical properties of polysulfide impression materials. J Dent Res 2002; 81: 2667. CR - 19. Whiteman Y, Nathanson D. Tear strength and dimensional accuracy of elastomeric impression materials, J Dent Res 2007; 86: 184. CR - 20. Dentistry, Hydrocolloid impression materials, ISO 21563 2014-02 CR - 21. Boghosian A, Lautenschlager EP. Tear strength of low-viscosity elastomeric impression materials. J Dent Res 2003; 82:137. UR - https://doi.org/10.22312/sdusbed.326886 L1 - https://dergipark.org.tr/en/download/article-file/589596 ER -