Retrospective Cohort Study: Five-Thread Guideline for Predicting Dental Implants Stability in Fresh Extraction Sites

Fahad K. Alwthinani^1, and Nouf Al Humayyani¹

¹Prosthodontic Department, Faculty of Dentistry, Taif University, Taif, KSA

Cite this paper:
Fahad K. Alwthinani and Nouf Al Humayyani. Retrospective Cohort Study: Five-Thread Guideline for Predicting Dental Implants Stability in Fresh Extraction Sites. International Journal of Dental Sciences and Research. 2025; 13(3):45-52. doi: 10.12691/ijdsr-13-3-1

Abstract

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.

Keywords:
Dental Implants Stability Fresh Extraction Sites Cohort Study.

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