HİDROFİLİK KUMLANMIŞ-ASİTLENMİŞ YÜZEYLİ İMPLANTLARIN HİSTOLOJİK VE HİSTOMORFOMETRİK İNCELEMESİ: KOYUN TİBİASINDA DENEYSEL ÇALIŞMA

Abstract

Bu çalışmanın amacı, standart kumlanmış-asitlenmiş implantlarla (SLA), modifiye yüzeye sahip implantların (modSLA) iyileşme dönemindeki osteointegrasyon özelliklerinin hayvanlar üzerinde deneysel olarak karşılaştırılmasıdır. Üç koyunun tibialarının metafasiyal bölgesine 30 implant yerleştirilmiş, rezonans frekans analizi (RFA) ve geri çevirme tork testi yapılmıştır. 3 ve 6. haftalarda RFA ölçümleri tekrar edilmiş ve aynı haftalarda non-dekalsifiye kesitler üzerinde histomorfometrik analizler yapılmıştır. İyileşmenin 6.haftasında implantlara geri çevirme tork testi uygulanmıştır. Sonuçlar varyans analizi (ANOVA) ve Pearson korelasyon testi kullanarak analiz edilmiştir. Tüm implantlar yüksek primer stabiliteye ulaşmıştır; yerleşim torku (ITV) değerleri ortalama 36.13±2.47 ve 35.47±2.85 N/cm olarak belirlenmiştir. SLA ve modSLA implantların RFA değerleri sırasıyla 72.27±3.17 ve 71.60±2.87 olarak bulunmuştur. İyileşmenin 3. haftasında, ortalama kemik implant kontakt yüzdesi (%80.64±13.89) ve RFA (76.80±1.14) değeri modSLA implantlarda SLA implantlardan daha yüksek bulunmuştur. Ancak iyileşmenin 6.haftasından geri çevirme tork testi değerleri açısından SLA (115.2±4.14) ve modSLA (117.0±4.47N/cm) implantlar arasında anlamlı bir fark bulunamamıştır (p=0.55). İncelenen parametreler arasında istatistiksel anlamlı korelasyon bulunamamıştır. Bu pilot çalışmanın verileri ışığında, modSLA implantların SLA implantlara göre erken iyileşme döneminde daha yüksek kemik temasına ve stabiliteye sahip olduğu söylenebilir.

Keywords

• Diş implantı, deneysel çalışma, koyun, histoloji, rezonans frekans analizi, geri çevirme tork testi

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