Influence of the dental implant macrogeometry and threads design on primary stability: an in vitro simulation on artificial bone blocks. Issue 11 (8th September 2021)

• Record Type: Journal Article
• Authors: Comuzzi, Luca; Tumedei, Margherita; De Angelis, Francesco; Lorusso, Felice; Piattelli, Adriano; Iezzi, Giovanna
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 24:Issue 11(2021)
• Page Start: 1242
• Page End: 1250
• Publication Date: 2021-09-08
• Subjects: Mechanical behaviour -- dental implant -- polyurethane block -- drilling; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2021.1875219
• Languages: English
• ISSNs: 1025-5842

Abstract

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 < 0.05). In both groups the mean values for IT, RT and ISQ appeared promising from a clinical point of view. In spite of different macrogeometry and thread profile, both implant types achieved high primary stability on solid rigid polyurethane block to support the functional loading for a clinical application.