eng Science and Education Publishing International Journal of Dental Sciences and Research 2333-1259 2025-05-10 13 3 45 52 10.12691/ijdsr-13-3-1 IJDSR20251331 article Fahad K. Alwthinani falwthinani@tudent.org 1 Nouf Al Humayyani 1 Prosthodontic Department, Faculty of Dentistry, Taif University, Taif, KSA While established best practices exist for the sizing and positioning of dental implants, there is a notable lack of guidelines tailored to assist clinicians in predicting primary implant stability in fresh extraction sites. [1,2,3] Accurately forecasting an implant¡¯s surgical success is critical for clinicians for two primary reasons: First, it guides treatment decisions. if conditions for successful placement are suboptimal, alternative plans, such as site development, should be considered. Secondly, precise prediction of surgical outcomes fosters a strong doctor-patient relationship, as communicating a no, low, medium, or high likelihood of success is essential for maintaining this rapport. [4] This retrospective cohort study aims to evaluate the predictive value of the Five-Thread Guideline (5-TG), which posits that engaging at least five implant threads in native bone correlates with high primary stability. [5] The study assessed four qualitative levels of stability probability: none, low, moderate, and high. Among the 150 cases analyzed, the 5-TG demonstrated significant predictive accuracy indicated by (p<0.0000207). Consequently, this guideline could be regarded as an essential tool for forecasting implant stability when planning dental procedures in newly extracted sites. https://pubs.sciepub.com/ijdsr/13/3/1/ijdsr-13-3-1.pdf Dental Implants Stability Fresh Extraction Sites Cohort Study