{'fraction_non_alphanumeric': 0.03602726387536514, 'fraction_numerical': 0.03261927945472249, 'mean_word_length': 4.956521739130435, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Marginal Adaptation of Cerec 2 Ceramic Inlays after Cementation

The aim of this study was to analyse the quality of marginal adaptation of ceramic inlays, fabricated by the Cerec 2 CAD/CAM method after cementation with two different materials (Tetric and Compolute). The study was carried out on 20 extracted premolars and molars on which ceramic inlays were fabricated. The first 10 inlays were cemented with a composite material with microparticles (Tetric), and the other 10 with a dual composite cement (Compolute). The samples were cut in the vestibular-oral direction and in the mesialdistal direction and analysed with a stereomicroscope, OPTON SV 8, with 160x magnification. Adaptation of the inlay after cementation with Tetric was ideal in 82%, good in 16% and bad in 2% of the samples. In the vestibular-oral direction (occlusally) complete adaptation was determined in 34%, negative adaptation in 20% (the inlay was not completely seated on the cavity wall) and positive in 46% of the samples (the inlay was higher than the surface of the prepared cavity). In the mesiodistal direction (gingivo-approximal) complete adaptation was determined in 54.8% of the samples, negative in 19% and positive in 26.2%. After cementation with Compolute ideal adaptation was determined in 70%, good in 25% and bad in 5% of the samples. Complete adaptation was recorded in 35.9%, negative in 38.5% and positive in 25.6% of the samples. Difference in the quality of adaptation of inlays in the vestibular-oral and mesiodistal direction was not statistically significant. Cerec inlays were completely adapted in more than 50% of the samples. Mean value of variations in the vestibularoral direction (occlusally) amounted to negative 555.29 m and positive 332.19 m, which is statistically significantly less. Mean value of variations in the mesiodistal direction (gingivo-approximal) amounted to negative 710.31 m and positive 361.39 m, which is statistically significantly less. The obtained results indicate that both materials are suitable for clinical use.