material used for posts and their components influences the stress distribution within the restoration [5]. A decrease in the elastic modulus of post materials leads to a more favorable stress distribution within the radicular dentin, reducing the risk of excessive stress concentration [6]. In some cases, the tooth structure becomes compromised, and the ferrule effect and the conservation of sound radicular and coronal tooth tissue should be considered in the design to improve the restoration's performance [3; 7; 8]. Ferrule design is crucial when preparing teeth for post and core restorations, as it minimizes the fracture risk in root canal-treated teeth [9; 10]. A finite element analysis (FEA) study in 2017 examined how a ferrule design combined with specific post material shapes affected the mechanical performance of canine teeth. The study revealed that carbon fiber posts experienced more stress than quartz fiber posts, while the combination of ferrule and quartz fiber posts produced the most homogeneous stress distribution [11]. Another FEA study affirmed the importance of ferrule in weakened root-filled teeth, combined with post systems such as cast post and glass fiber post systems [12]. The cast post system without a ferrule resulted in higher stress concentrations within the root canal. Conversely, the fiber post system showed a more homogeneous stress distribution, similar to a sound tooth [12]. Another study used FEA to investigate the effects of pile materials on the stress distribution between remaining tooth tissue and fracture defects using different elastic moduli and cement materials [13]. The ferrule effect is defined as the remaining supragingival tooth structure surrounding the crown, significantly improving fracture resistance [14]. A 2 mm height of the ferrule is considered the ideal dimension for achieving the optimal circumferential ferrule effect. It lowers stress within the tooth by encircling it with dentin's parallel walls, extending coronally to the shoulder of the preparation [15]. Non-uniform ferrule lengths still offer greater fracture resistance than teeth without a ferrule [16; 17]. The lack of a ferrule may reduce a tooth's survival rate, depending on the amount of tooth structure loss and the remaining dentin walls. A 1 mm vertical height of the ferrule offers double the fracture resistance compared to teeth without a ferrule [14]. Furthermore, the position of the sound tooth structure is more critical in resisting occlusal stresses than having a 360-degree circumferential axial dentin wall [18]. Stress studies show that the highest stresses in root dentine occur at the tooth's circumference, while stress within the root canal is minimal during function [19]. Many studies focus on stress distribution in the root, abutment, post, crown, cement layer, the interfaces between the post-root and post-abutment, and the adhesive layer between the abutment and root or ferrule [3]. Material properties, including Young's modulus, shear modulus, yield strength, Poisson's ratio, density, and tensile strength, significantly influence the stress-bearing characteristics of the materials. A 2006 study analyzed both tensile and compressive stresses in relation to ferrule design. The results indicated that higher tensile stresses were observed at the internal and mid-root palatal dentine near the cervical margin compared to preparations without a ferrule. Conversely, the presence of a ferrule led to a notable reduction in compressive stresses, improving the overall stress distribution [5]. Another study found that the maximum principal stresses in dentin with a ferrule were highest in incisors [20]. [PERSON] et al. showed that fiber-reinforced posts caused greater stress concentration in the root's middle and cervical thirds than other posts [21]. Retained coronal dentine on the buccal side improved fracture resistance compared to teeth without coronal dentine [22]. [PERSON] et al.