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Koruyucu rezin uygulamasının yüksek viskoziteli geleneksel cam iyonomer simanın mikrosertliği üzerine etkisinin ın vıtro olarak değerlendirilmesi

Year 2008, Volume: 11 Issue: 2, 91 - 95, 04.11.2011

Esra Uzer Celik Banu Ermis

Abstract

Purpose: The purpose of this study was to examine the effect of early exposure to water and the efficiency of nanofilled self-adhesive lightcured protective resin coating on the microhardness of highly viscous conventional glass ionomer cement.

Material and methods: Twenty-four samples were prepared in 2 mm thickness and 5 mm diameter using highly viscous glass ionomer cement. Protective resin coating (G-Coat Plus, GC) was applied onto the entire surfaces of the half of the samples according to the manufacturer’s instructions. The samples then were stored in distilled water at 37ºC for 1 month. Microhardness measurements of the samples were carried out after 24 hours, 2 weeks and 1 month. The data were analyzed by repeated measures of ANOVA, Sheffe F and independent t-tests.

Results: The microhardness values of uncoated group were observed to gradually increase throughout 24 hours, 2 weeks and 1 month measurement times (p<0.05). No significant differences were observed among the hardness values obtained from the coated group at the different measurement times. Higher microhardness values were obtained from the uncoated samples at all measurement times (p<0.05).

Conclusion: Early exposure to water was observed to positively affect the microhardness values of the highly viscous glass ionomer cement. Protective resin coating was determined to form lower hardness values on the surfaces of samples.

 

ÖZET

Amaç: Bu çalışmanın amacı erken dönemde suya maruz kalmanın ve ışıkla sertleşen nano-doldurucu içeren self-adeziv koruyucu rezin uygulamasının yüksek viskoziteli geleneksel cam iyonomer simanın mikrosertliği üzerine etkisini incelemektir.

Gereç ve Yöntem: Yüksek viskoziteli cam iyonomer siman kullanılarak 2 mm kalınlığında ve 5 mm çapında 24 örnek hazırlandı. Örneklerin yarısının tüm yüzeyine üretici firmanın önerileri doğrultusunda koruyucu rezin uygulandı (G-Coat Plus, GC). Daha sonra örnekler 1 ay boyunca 37ºC’de distile suda bekletildi. Yirmi dört saat, 2 hafta ve 1 ay sonunda örneklerin mikrosertlik ölçümleri gerçekleştirildi. Veriler; tekrarlayan ölçümler ANOVA, Sheffe F ve bağımsız t-testleri ile analiz edildi.

Bulgular: Koruyucu rezin uygulanmayan grupta 24 saat, 2 hafta ve 1 aylık ölçümlerde mikrosertlik değerinin süre arttıkça anlamlı şekilde arttığı belirlendi (p<0.05). Koruyucu rezin uygulanan grupta ise farklı ölçüm periyotlarında elde edilen sertlik değerleri arasında fark saptanmadı. Her ölçüm periyodunda koruyucu rezin uygulanmayan örneklerle daha yüksek sertlik değerleri elde edildi (p<0.05).

Sonuç: Erken dönemde suya maruz kalmanın yüksek viskoziteli cam iyonomer simanın sertlik değerini olumlu yönde etkilediği belirlendi. Koruyucu rezin uygulamasının örneklerin yüzeyinde daha düşük sertlik değerleri oluşturduğu saptandı.

Anahtar kelimeler: Cam iyonomer siman; self-adeziv rezin; mikrosertlik.

Keywords

Glass ionomer cement self-adhesive resin coating microhardness

References

  • Wilson AD, Kent BE. A new translucent for dentistry. The glass ionomer cement. Br Dent J 1972; 132: 133-5.
  • Yap AU, Pek YS, Cheang P. Physico-mechanical properties of a fast-set highly viscous GIC restorative. J Oral Rehabil 2003; 30:1-8.
  • Pegora TA, da Silva NR, Carvalho RM. Cements for use in esthetic dentistry. Dent Clin North Am 2007; 51: 453-71.
  • Nicholson JW. Chemistry of glass-ionomer cements: a review. Biomaterials 1998; 19: 485-94.
  • Earl MS, Ibbetson RJ. The clinical disintegration of a glass- ionomer cement. Br Dent J 1986; 161: 287-91.
  • Iazzetti G, Burgess JO, Gardiner D, Ripps A. Color stability of fluoride-containing restorative materials. Oper Dent 2000; 25: 520-5.
  • Kovarik RE, Haubenreich JE, Gore D. Glass ionomer cements: a review of composition, chemistry, and biocompatibility as a dental and medical implant material. J Long Term Eff Med Implants 2005; 15: 655-71.
  • Causton BE. The physico-mechanical consequences of exposing glass ionomer cements to water during setting. Biomaterials 1981;2:112-5.
  • Earl MS, Mount GJ, Hume WR. The effect of varnishes and other surface treatments on water movement across the glass ionomer cement surface. Aust Dent J 1989; 34: 326-9.
  • Hotta M, Hirukawa H, Aono M. The effect of glaze on restorative glass-ionomer cements. J Oral Rehabil 1995; 22: 197-201.
  • GC: G-Coat Plus: Available from: www.gcamerica.com/gcGcoat.html (erişim tarihi:28.04.2008).
  • McKinney JE, Wu W. Chemical softening and wear of dental composites. J Dent Res 1985; 64: 1326-31.
  • Basting RT, Serra MC, Rodrigues AL. In situ microhardness evaluation of glass-ionomer/composite resin hybrid materials at different post-irradiation times. J Oral Rehabil 2002; 29: 1187-95.
  • Leirskar J, Nordbo H, Mount GJ, Ngo H. The influence of resin coating on the shear punches strength of a high strength auto-cure glass ionomer. Dent Mater 2003; 19: 87-91.
  • Şener Y, Koyutürk AE. Üç farklı cam iyonomer simanın yüzey sertliklerinin karşılaştırılması. Cumhuriyet Üniversitesi Diş Hek Fak Derg 2006; 9: 91-4.
  • Okada K, Tosaki S, Hirota K, Hume WR. Surface hardness change of restorative filling materials stored in saliva. Dent Mater ; 17: 34-9. Wang XY, Yap AU, Ngo HC. Effect of early water exposure on the strength of glass ionomer restoratives. Oper Dent 2006; 31: 584-9.
  • Gordon England, Independent Metallurgist and Consultant to the Thermal Spray http://www.gordonengland.co.uk/hardness/microhardness.html (erişim tarihi: 04.2008). test: Available from:
  • Wilson NH. The evaluation of materials: relationships between laboratory investigations and clinical studies. Oper Dent 1990; 15: 149-55.
  • Asmussen E. Opacity of glass-ionomer cements. Acta Odontol Scand 1983; 41: 155-7.
  • Hotta M, Hirukawa H, Yamamoto K. Effect of coating materials on glass-ionomer cement surface. Oper Dent 1992; 17: 57-61.
  • Croll TP. Alternatives to silver amalgam and resin composite in pediatric dentistry. Quintessence Int 1998; 29: 697-703.
  • Haddad D, Mount GJ, Makinson OF. Efficiency of protective sealants for glass ionomer cements. Am J Dent 1992; 5: 286-8.
  • Mair LH, Stolarski TA, Vowles RW, Lloyd CH. Wear: mechanisms, manifestations and measurement. Report of a workshop. J Dent 1996; 24: 141-8.

KORUYUCU REZİN UYGULAMASININ YÜKSEK VİSKOZİTELİ GELENEKSEL CAM İYONOMER SİMANIN MİKROSERTLİĞİ ÜZERİNE ETKİSİNİN IN VITRO OLARAK DEĞERLENDİRİLMESİ

Year 2008, Volume: 11 Issue: 2, 91 - 95, 04.11.2011

Esra Uzer Celik Banu Ermis

Abstract

Amaç: Bu çalışmanın amacı erken dönemde suya maruz kalmanın ve ışıkla sertleşen nano-doldurucu içeren self-adeziv koruyucu rezin uygulamasının yüksek viskoziteli geleneksel cam iyonomer simanınmikrosertliği üzerine etkisini incelemektir.Gereç ve Yöntem: Yüksek viskoziteli cam iyonomer siman kullanılarak 2 mm kalınlığında ve 5 mm çapında 24 örnek hazırlandı. Örneklerin yarısının tüm yüzeyine üretici firmanın önerileri doğrultusunda koruyucu rezin uygulandı (G-Coat Plus, GC). Daha sonra örnekler 1 ay boyunca 37ºC’de distile suda bekletildi. Yirmi dört saat, 2 hafta ve 1 ay sonunda örneklerin mikrosertlik ölçümleri gerçekleştirildi. Veriler; tekrarlayan ölçümler ANOVA, Sheffe F ve bağımsız t-testleri ile analiz edildi.Bulgular: Koruyucu rezin uygulanmayan grupta 24 saat, 2 hafta ve 1 aylık ölçümlerde mikrosertlik değerinin süre arttıkça anlamlı şekilde arttığı belirlendi (p0.05). Koruyucu rezin uygulanan grupta ise farklı ölçüm periyotlarında elde edilen sertlik değerleri arasında fark saptanmadı. Her ölçüm periyodunda koruyucu rezin uygulanmayan örneklerle daha yüksek sertlik değerleri elde edildi (p0.05).Sonuç: Erken dönemde suya maruz kalmanın yüksek viskoziteli cam iyonomer simanın sertlik değerini olumlu yönde etkilediği belirlendi. Koruyucu rezin uygulamasının örneklerin yüzeyinde daha düşük sertlik değerleri oluşturduğu saptandı

Keywords

Cam iyonomer siman self-adeziv rezin mikrosertlik

References

  • Wilson AD, Kent BE. A new translucent for dentistry. The glass ionomer cement. Br Dent J 1972; 132: 133-5.
  • Yap AU, Pek YS, Cheang P. Physico-mechanical properties of a fast-set highly viscous GIC restorative. J Oral Rehabil 2003; 30:1-8.
  • Pegora TA, da Silva NR, Carvalho RM. Cements for use in esthetic dentistry. Dent Clin North Am 2007; 51: 453-71.
  • Nicholson JW. Chemistry of glass-ionomer cements: a review. Biomaterials 1998; 19: 485-94.
  • Earl MS, Ibbetson RJ. The clinical disintegration of a glass- ionomer cement. Br Dent J 1986; 161: 287-91.
  • Iazzetti G, Burgess JO, Gardiner D, Ripps A. Color stability of fluoride-containing restorative materials. Oper Dent 2000; 25: 520-5.
  • Kovarik RE, Haubenreich JE, Gore D. Glass ionomer cements: a review of composition, chemistry, and biocompatibility as a dental and medical implant material. J Long Term Eff Med Implants 2005; 15: 655-71.
  • Causton BE. The physico-mechanical consequences of exposing glass ionomer cements to water during setting. Biomaterials 1981;2:112-5.
  • Earl MS, Mount GJ, Hume WR. The effect of varnishes and other surface treatments on water movement across the glass ionomer cement surface. Aust Dent J 1989; 34: 326-9.
  • Hotta M, Hirukawa H, Aono M. The effect of glaze on restorative glass-ionomer cements. J Oral Rehabil 1995; 22: 197-201.
  • GC: G-Coat Plus: Available from: www.gcamerica.com/gcGcoat.html (erişim tarihi:28.04.2008).
  • McKinney JE, Wu W. Chemical softening and wear of dental composites. J Dent Res 1985; 64: 1326-31.
  • Basting RT, Serra MC, Rodrigues AL. In situ microhardness evaluation of glass-ionomer/composite resin hybrid materials at different post-irradiation times. J Oral Rehabil 2002; 29: 1187-95.
  • Leirskar J, Nordbo H, Mount GJ, Ngo H. The influence of resin coating on the shear punches strength of a high strength auto-cure glass ionomer. Dent Mater 2003; 19: 87-91.
  • Şener Y, Koyutürk AE. Üç farklı cam iyonomer simanın yüzey sertliklerinin karşılaştırılması. Cumhuriyet Üniversitesi Diş Hek Fak Derg 2006; 9: 91-4.
  • Okada K, Tosaki S, Hirota K, Hume WR. Surface hardness change of restorative filling materials stored in saliva. Dent Mater ; 17: 34-9. Wang XY, Yap AU, Ngo HC. Effect of early water exposure on the strength of glass ionomer restoratives. Oper Dent 2006; 31: 584-9.
  • Gordon England, Independent Metallurgist and Consultant to the Thermal Spray http://www.gordonengland.co.uk/hardness/microhardness.html (erişim tarihi: 04.2008). test: Available from:
  • Wilson NH. The evaluation of materials: relationships between laboratory investigations and clinical studies. Oper Dent 1990; 15: 149-55.
  • Asmussen E. Opacity of glass-ionomer cements. Acta Odontol Scand 1983; 41: 155-7.
  • Hotta M, Hirukawa H, Yamamoto K. Effect of coating materials on glass-ionomer cement surface. Oper Dent 1992; 17: 57-61.
  • Croll TP. Alternatives to silver amalgam and resin composite in pediatric dentistry. Quintessence Int 1998; 29: 697-703.
  • Haddad D, Mount GJ, Makinson OF. Efficiency of protective sealants for glass ionomer cements. Am J Dent 1992; 5: 286-8.
  • Mair LH, Stolarski TA, Vowles RW, Lloyd CH. Wear: mechanisms, manifestations and measurement. Report of a workshop. J Dent 1996; 24: 141-8.
There are 23 citations in total.

Details

Primary Language English
Journal Section Original Research Articles
Authors

Esra Uzer Celik

Banu Ermis

Publication Date November 4, 2011
Submission Date November 4, 2011
Published in Issue Year 2008Volume: 11 Issue: 2

Cite

EndNote Uzer Celik E, Ermis B (November 1, 2011) Koruyucu rezin uygulamasının yüksek viskoziteli geleneksel cam iyonomer simanın mikrosertliği üzerine etkisinin ın vıtro olarak değerlendirilmesi. Cumhuriyet Dental Journal 11 2 91–95.

Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.


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