BİLGİSAYAR DESTEKLİ TASARIM-BİLGİSAYAR DESTEKLİ ÜRETİM SİSTEMLERİNİN FARKLI DENTAL RESTORASYONLARIN KENAR VE İÇ YÜZEY UYUMLARINA ETKİSİNİN DEĞERLENDİRİLMESİ: İN-VİTRO ÇALIŞMA

Amac: Bu calismanin amaci, direkt (agiz-ici tarayici) ve indirekt (agiz-disi tarayici) dijital teknikle uretilen kron ve inley restorasyonlarinin kenar ve ic yuzey uyumunu degerlendirmek ve geleneksel teknikle bilgisayar destekli tasarim ve bilgisayar destekli uretim (CAD/CAM) kullanilarak uretilen restorasyonlari karsilastirmaktir. Gerec ve yontem : Kron ve inley restorasyonlarin uretimi icin mandibular sag ve sol birinci buyuk azi fantom disler kullanilmistir. Calismada 6 grup kron (n=10), 3 grup inley (n=10) olmak uzere toplamda 9 grup ve 90 adet ornek bulunmaktadir. Her iki restorasyon tipinin uretiminde direkt dijital, indirekt dijital ve geleneksel yontem kullanilmistir. Orneklerin kenar ve ic yuzey uyumunun degerlendirilmesinde replika teknigi kullanilmis olup, olcumler 50x buyutmeli stereomikroskop altinda gerceklestirilmistir. Istatistiksel degerlendirme tek yonlu varyans analizi ve tekrarli olcumler varyans analizi yontemleri ile yapilmis olup, gruplar arasi karsilastirmalarda ise Tukey HSD ve Tamhane’s T2 testleri kullanilmistir(p<0,05). Bulgular: Elde edilen sonuclara gore, kenar ve ic yuzey uyum degerlerinin olcu ve uretim tekniginden etkilendigi gorulmustur. Direkt dijital teknik, indirekt dijital teknik ve geleneksel yonteme gore her iki restorasyon grubunda en iyi sonuclari vermistir. Tum gruplarda elde edilen ic yuzey aralik degerlerinin, kenar aralik degerlerinden daha yuksek oldugu saptanmistir (p<,001). Sonuc: Calismanin kisitliliklari dahilinde, direkt dijital yolla elde edilen kron ve inley restorasyonlarina ait kenar ve ic yuzey uyumlari, indirekt dijital ve geleneksel yontemle uretilen restorasyonlara gore istatistiksel olarak daha iyidir. Anahtar kelimeler: CAD/CAM, inley, kron, replika teknikleri. Evaluation of the effect of computer aided design- computer aided manufacturing systems on marginal and internal fit of different dental restorations: An in-vitro study ABSTRACT Aim: The aim of this study was to evaluate the marginal and internal fit of crown and inlay restorations that produced with direct (intra-oral scanner) and indirect (extra-oral scanner) digital methods and compare the computer-aided design and computer-aided manufacturing (CAD / CAM) restorations with conventional ones. Material and Methods: Mandibulary right and left first molar phantom teeth were used to produce the crown and inlay restorations. Totally, there were 9 groups and 90 samples in the study, including 6 groups of crowns (n = 10) and 3 groups of inlays (n = 10). Direct digital, indirect digital and traditional methods were used in the production of both restoration types. Replica technique was used to evaluate the marginal and internal fit of the samples, and the measurements were performed under a 50x magnification stereomicroscope. One-way analysis of variance and repeated measures of variance analysis were performed for statistical evaluation, and Tukey HSD and Tamhane’s T2 tests were used for comparisons between groups (p <0.05). Results: According to the obtained results, marginal and internal fit values were influenced by impression and production technique . Direct digital technique gave the best results in both restoration groups compared to indirect digital technique and the conventional method. Internal gap values obtained in all groups were found to be higher than marginal gap values (p <.001). Conclusion: Within the limitations of the study, marginal and internal fit values of the crown and inlay restorations obtained with direct digital method were statistically better than the restorations produced by the indirect digital and conventional methods. Keywords: CAD/CAM, inlay, crown, replica techniques.