Related Experiment Video
Updated: Jan 27, 2026

Author Spotlight: Streamlined Brain and Skull Modeling for Enhanced Neurosurgical Planning in NHP Research
Published on: February 9, 2024
Influence of an Alternative Implant Design and Surgical Protocol on Primary Stability
Mariana Lima da Costa Valente1, Denise Tornavoi de Castro1, Antônio Carlos Shimano2
1Department of Dental Materials and Prosthesis, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
Abstract:
The purpose of thisin vitrostudy was to evaluate the influence of a new proposal of implant design and surgical protocol on primary stability in different bone densities. Four groups were tested (n=9): G1 - tapered, cone morse, Ø 4.3 mm x 10 mm in length (Alvim CM); G2 - experimental tapered; G3 - cylindrical, cone morse, Ø 4.0 mm x 11 mm in length (Titamax CM) and G4 - experimental cylindrical. The experimental implants were obtained from a design change in the respective commercial models. The insertion was performed in polyurethane (PU) blocks 0.24 g/cm3(20 pcf) and 0.64 g/cm3(40 pcf), according to different surgical protocols. The primary stability was measured by means of insertion torque (IT) and pullout test. Data were analyzed by ANOVA, Tukey's test (α=0.05) and Pearson's correlation. For IT and pullout, conventional and experimental implants showed no difference between them when inserted in the 20 pcf PU (p>0.05). In the 40 pcf PU, the modified implants exhibited greater IT (p<0.05) and lower pullout (p<0.05) compared to the respective conventional models. The implant design tested associated with the surgical protocol, positively influenced primary stability in higher density bones.
Related Concept Videos
Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence
Complexation Equilibria: Factors Influencing Stability of Complexes
RNA Stability
Biopharmaceutical Factors Influencing Drug Product Design: Overview
Group Design
Factorial Design

