Influence of the dental implant macrogeometry and threads design on primary stability: an in vitro simulation on artificial bone blocks

Luca Comuzzi, Margherita Tumedei, Francesco De Angelis, Felice Lorusso, Adriano Piattelli and Giovanna Iezzi

Computer Methods in Biomechanics and Biomedical Engineering, 2021, vol. 24, issue 11, 1242-1250

Abstract: The implant macrogeometry and thread profile represent one of the most important factors for a successful achievement of primary stability during the positioning procedure. The aim of the present investigation was to evaluate the insertion torque (IT), removal torque (RT) and Implant stability Quotient (ISQ) of two different implant macrogeometry and thread profile on solid rigid polyurethane model. Two different implants macrogeometries were tested: K2 (Group I) with 11° angle, 1.17 mm pitch and self-cutting V thread profile and K3 (Group II) implants with 30° angle, 0.71 mm pitch and spyral thread profile. A total of 120 specimens (n = 60 for each group) were positioned into different conditions of solid rigid polyurethane blocks. The insertion torque (IT), removal torque (RT) and ISQ were measured for each specimen. All specimens achieved the positioning into solid rigid polyurethane blocks for both of groups with no loss of stability. A significantly higher IT, RT and ISQ were detected in Group II (p

Date: 2021
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DOI: 10.1080/10255842.2021.1875219

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