Aim: This research sought to assess the proportion of gutta-percha-filled area (PGFA) within root canals that were filled utilizing the Thermafil technique, Warm Vertical Condensation technique (WVC), or Cold Lateral Condensation technique (CLC), all without the use of sealers. To facilitate this evaluation, cross-sectional analyses of the root canals were performed through microscopic examination. Materials and methods: A total of 90 permanent teeth featuring single roots were extracted for this study. The teeth were sectioned at the coronal level and randomly divided into three separate groups, each comprising 30 samples. The classification of these groups was based on the obturation techniques applied. Group A was treated with the Thermafil obturation method, Group B utilized warm vertical condensation, and Group C employed cold lateral condensation. The obturation processes were carried out using specific methodologies without the inclusion of sealers. Following the obturation, the teeth were horizontally cross-sectioned approximately 2 to 3 mm from the apex using a double-sided diamond disc. The resulting sections were visually recorded and analyzed with a stereomicroscope at a magnification of 50x. Measurements of the canal dimensions and the gutta-percha were conducted using KS 100 imaging equipment, and the area filled with gutta-percha (PGFA) was calculated. Statistical analysis of the data collected was performed using ANOVA and the Student's t-test. Results:Group A, particularly the Thermafil group, demonstrated a markedly elevated mean value when contrasted with both research groups II and III. In a similar vein, group B, which implemented WVC, showed a significantly higher mean value relative to group C, which utilized CLC. Consequently, the differences noted among the various groups were statistically significant. Conclusion: The current research indicates that both the warm vertical condensation method and the cold lateral condensation technique result in notably lower percentages of gutta-percha filled area (PGFA) when contrasted with the Thermafil Obturation method. Keywords: obturation, root canal, thermafil