Comparison of three different protocols for the preparation of dental implant drilling sequences (Conventional, Undersized surgical technique and Expander-osteotome): Ex-vivo study

Objective : To compare the effect of three types of surgical site preparation protocols on the primary stability of dental implants installed in poor quality bone. Material and methods: After analysis by X-ray microtomography, thirty bone blocks with poor bone quality were chosen and divided into three groups (N = 10). Control: Conventional; Undersized surgical technique and Expander-osteotome. The final insertion torque and the implant stability quotient were recorded. Statistical analysis included the Shapiro-Wilk test, One-way ANOVA, with Tukey's post-hoc and Pearson's correlation coefficient with a significance level of 5%. Results: The undersized surgical technique obtained higher final insertion torque values (p <0.05) and better results in terms of resonance frequency analysis values (p <0.05). Pearson's correlation test showed a strong correlation between the variables (p < 0.05). Conclusions: According to the methodology used, the undersized surgical technique proved to be more advantageous in regions of low bone quality.