.  2022 Mar;26(1):1-14. 10.32542/implantology.2022001.

Assessment of Factors that Affect Primary Stability of Minimally Invasive Implant (MII): An in vitro Study

  • 1Private Practitioner, L Dental Clinic, Yangsan, Korea
  • 2Private Practitioner, L Dental Clinic, Daejeon, Korea
  • 3Researcher, Academy of Minimally Invasive Implantology, Daejeon, Korea
  • 4Fellow, Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea


This study aimed to evaluate the factors affecting the primary stability of a new implant design based on minimally invasive implantation (MAGICORE ® ; INNOBIOSURG Co. Ltd., Daejeon, Korea) using the evaluation index of Periotest value (PTV), implant stability quotient (ISQ), and implant stability test (IST).
Materials and Methods
A total of 1056 implants were implanted in artificial bone, imitating human bones D1, D2, D3, and D4. The PTV, ISQ, and IST values of all implants were measured according to the manufacturer’s guidelines for each measuring instrument. To compare the factors affecting the stability of the implant for each measurement method, one-way ANOVA was performed, and posthoc analysis was performed using the Games–Howel test (p < .05). In addition, a stepwise multiple linear regression analysis was performed to evaluate the weight of each factor.
Implants with diameters greater than 5.0 mm showed significantly lower PTV values and higher ISQ and IST values. Implants with 11 mm length showed the lowest PTV and highest ISQ and IST values. A cuff size of 2 mm showed the highest implant stability among all the measurement methods. In this study, poor bone quality decreased the primary stability.
As the cuff size increased, the stability decreased, and the larger the diameter of the implant, the longer the length and higher the primary stability. The bone quality and diameter of the implant contributed more to the stability of the implant than to the length of the implant and cuff size


Implant primary stability; Implant stability quotient (ISQ); Implant stability test (IST); Minimally invasive implant (MII); Periotest value (PTV)
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