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ER: YAG LAZER İLE PURUZLENDIRMENIN FİSSÜR ÖRTÜCÜLERİN BAĞLANMA KUVVETLERİ ÜZERİNE OLAN ETKİSİNİN DEĞERLENDİRİLMESİ

ASSESSMENT OF THE EFFECT OF ER:YAG LASER CONDITIONING ON BOND STRENGTH OF FISSURE SEALANTS

Journal Name:

  • İstanbul Üniversitesi Diş Hekimliği Fakültesi Dergisi

Publication Year:

  • 2010
Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The purpose of this study was to evaluate the effect of Er:YAG laser enamel etching and/or phosphoric acid enamel etching on shear bond strengths (SBS) of fissure sealants. 42 extracted non-carious third molars, washed and cleaned with a fluoride-free pumice, were sectioned in the cement-enamel junction. Coronal section were embedded in resin and labial surfaces of crowns were flattened for an enamel surface area of 3mm in diameter. The specimens were randomly assigned to six groups of 7 teeth each. Group 1: Acid etching+Clinpro(3M ESPE,USA), Group 2: Er:YAG laser etching (Fidelis Plus II,Fotona)+Clinpro, Group 3: Laser etching+acid etching+Clinpro, Group 4: acid etching+FissuritF(Voco,). Group5: Laser etching+FissuritF, Group 6: Laser etching+acid etching+FissuritF. Samples were etched with 37 % phosphoric acid gel for 20 sec. and/or Er:YAG laser (10 Hz, 120 mJ). Cylindrical molds (D:3mm, H:2mm) were placed on substrate surfaces; and sealants were applied and cylinders of fissure sealants were submitted to SBS test in an Instron machine. SBS data in MPa was statistically analyzed by Tukey Multiple Comparisons test. Mean+SD values (MPa): Group 1: 14.52±2.33, Group 2: 5.43±2.02, Group 3: 9.14±3,08, Group 4: 9.39±2.94, Group 5: 5.03±2.68, Group 6: 8.31±2.41. Significant differences were determined between Gr 1-Gr 2 (p<0.001), Gr 1-Gr 3 (p<0.01), Gr 1-Gr 4 (p<0.01), Gr 1-Gr 5 (p<0.001), Gr 1-Gr 6 (p<0.01) and Gr 4-Gr 5 (p<0.05). No significant differences were found between the other groups. Laser enamel etching, laser+acid enamel etching have demonstrated lower SBS values for the fissure sealants tested than enamel acid etching.
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Abstract (Original Language): 
Bu çalışmanın amacı, Er:YAG lazer ve/yada fosforik asit ile mine pürüzlendirilmesinin fıssür örtücülerin mineye bağlanma kuvvetleri üzerine etkilerinin değerlendirilmesidir. 42 adet çürüksüz üçüncü büyük azı dişi fluorid içermeyen bir pomza ile temizlenip yıkandıktan sonra mine-sement sınırından kesildi. Koronal parça akrilik reçine içine gömüldü ve kuronların labial yüzeylerinde 3 mm çapında düz mine yüzeyleri hazırlandı. Örnekler gelişigüzel olarak 7 dişten oluşan 6 gruba ayrıldı: 1. Grup: Asit+Clinpro (3M ESPE, ABD), 2.Grup: Er:YAGlazer+Clinpro, 3. Grup: Lazer+Asit+Clinpro, 4. Grup: Asit+FissuritF (Voco, Almanya), 5. Grup: Lazer+FissuritF, 6. Grup: Lazer+Asit+FissuritF. Mine yüzeyleri Er:YAG lazer (Fidelis PlusII, Fotona) ile 10 Hz-120 mJ da ve/ya da fosforik asit jeli ile 20 sn süre ile pürüzlendirildi. Fissür örtücüler mine yüzeylerine yerleştirilen silindir kalıplara (Ç:3mm,U:2mm) üretici firmalarımn önerileri doğrultusunda uygulandı ve Instron cihazında basma dayanımı testi (1 mm/dk) uygulandı. Gruplarda elde edilen ortalama basma dayanımı değerleri (MPa) Tukey çoklu karşılaştırma testi ile istatistiksel olarak değerlendirildi. Ortalama ve standart sapma değerleri (MPa): 1. Grup: 14.52±2.33, 2. Grup: 5.43±2.02, 3. Grup: 9.14±3,08, 4. Grup: 9.39±2.94, 5. Grup: 5.03±2.68, 6. Grup: 8.31±2.41. 1. Grup-2. Grup (p<0.001), 1. Grup-3. Grup (p<0.01), 1. Grup-4. Grup (p<0.01), 1. Grup-5. Grup (p<0.001), 1. Grup -6. Grup (p<0.01) ve 4. Grup-5. Grup (p<0.05) arasında anlamlı farklılıklar saptandı; diğer gruplar arasında anlamlı farklılıklar bulunmadı. Er:YAG lazer ve Er:YAG lazer+fosforik asit ile pürüzlendirilmiş mine yüzeylerine uygulanan her iki fissür örtücü materyalin bağlanma kuvveti değerlerinin fosforik asit ile pürüzlendirilmiş mine yüzeylerine uygulanan değerlerden daha düşük olduğu belirlendi.
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