Radiological Analysis of Post Quality in Post Crown Restoration among a Sample of Population in Sana'a City

Introduction: Endodontically treated teeth require restoration to ensure long-term survival and function. Proper post-space preparation is crucial for successful restoration. Material and Methods: A retrospective study was conducted using digital periapical radiographs of endodontically treated teeth (ETT) restored with posts in Sana'a City. Three hundred and fifty-two radiographs were included in the analysis. The following information was extracted from each image: Tooth characteristics: Type, number, and jaw involvement. Post characteristics: Shape, length about root and crown length, width about root width, and length in bone. Gutta-percha (GP) characteristics: Presence of space between GP and post, length of remaining GP in canals, and extension beyond root apices. Root canal treatment quality: Overall assessment. Statistical analysis was performed using SPSS. Descriptive statistics were generated, and the association between different variables was evaluated using the chi-square test at a significance level of p < 0.05. Result: Posts were used to restore maxillary and mandibular teeth equally (49.7%, 50.3%). Prefabricated parallel metal posts were the most used (58%), followed by posts placed in premolars (41.2%). Adherence to prosthetic guidelines was poor. Only 25.3% of posts had a width equal to one-third of the root width. Post length was rarely two-thirds of the root length (5.1%), and often exceeded crown height (61.9%). In 73.6% of cases, there was no space between the gutta-percha (GP) and the post. The remaining GP length was 3–5 mm in 27.9% of cases. These findings highlight the need for improved adherence to prosthetic guidelines in endodontic treatment. Conclusion: To enhance the quality of post-crown restorations, dentistry schools, and private clinics should implement a controlled academic supervisory environment and a rigorous scientific approach to fixed prosthodontics. This would ensure that radiographically evaluated restorations meet the highest standards of care.