Background: Implant primary stability can be affected by several factors related to implant macrogeometry, local anatomy, and surgical techniques. The aim of this research was to study primary stability on polyurethane foam sheets of wide‐threaded implant design compared to narrow‐threaded implants. Materials and methods: Two different implant designs were positioned on D3 density polyurethane blocks in a standardized environment: the wide‐threaded implant and the narrow‐threaded implant, for a total of 160 specimens. Moreover, for each group, two different sizes were considered: 3.8mm × 12mm and 4.8mm × 12 mm. The insertion torque (IT) values, the removal strength (RT), and the Periotest analyses were evaluated. Results: A significantly higher IT and RT was reported for wide‐threaded implants and two‐stage implants (p < 0.01), compared to the narrow‐threaded implants. The diameters seemed to provide a significant effect on the primary stability for both implants’ geometry (p < 0.01). A higher mean of the one‐stage implant was evident in the Periotest measurements (p < 0.01). Conclusions: Both of the implants showed sufficient stability in polyurethane artificial simulation, while the wide‐threaded implant design showed a higher primary stability on alveolar cancellous synthetic bone in vitro. Additionally, the prosthetic joint connection seemed to have a determinant effect on Periotest analysis, and the one‐stage implants seemed to provide a high stability of the fixture when positioned in the osteotomy, which could be important for the immediate loading protocol.

Comparative in vitro evaluation of the primary stability in D3 synthetic bone of two different shapes and pitches of the implant threads / S. Fanali, M. Tumedei, P. Pignatelli, A. Lucchese, F. Inchingolo, A. Piattelli, G. Iezzi. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 11:12(2021), pp. 5612.1-5612.11. [10.3390/app11125612]

Comparative in vitro evaluation of the primary stability in D3 synthetic bone of two different shapes and pitches of the implant threads

Tumedei M.;
2021

Abstract

Background: Implant primary stability can be affected by several factors related to implant macrogeometry, local anatomy, and surgical techniques. The aim of this research was to study primary stability on polyurethane foam sheets of wide‐threaded implant design compared to narrow‐threaded implants. Materials and methods: Two different implant designs were positioned on D3 density polyurethane blocks in a standardized environment: the wide‐threaded implant and the narrow‐threaded implant, for a total of 160 specimens. Moreover, for each group, two different sizes were considered: 3.8mm × 12mm and 4.8mm × 12 mm. The insertion torque (IT) values, the removal strength (RT), and the Periotest analyses were evaluated. Results: A significantly higher IT and RT was reported for wide‐threaded implants and two‐stage implants (p < 0.01), compared to the narrow‐threaded implants. The diameters seemed to provide a significant effect on the primary stability for both implants’ geometry (p < 0.01). A higher mean of the one‐stage implant was evident in the Periotest measurements (p < 0.01). Conclusions: Both of the implants showed sufficient stability in polyurethane artificial simulation, while the wide‐threaded implant design showed a higher primary stability on alveolar cancellous synthetic bone in vitro. Additionally, the prosthetic joint connection seemed to have a determinant effect on Periotest analysis, and the one‐stage implants seemed to provide a high stability of the fixture when positioned in the osteotomy, which could be important for the immediate loading protocol.
Artificial bone; Dental implant; Polyurethane; Primary stability; Submerged implants
Settore MED/50 - Scienze Tecniche Mediche Applicate
Settore MED/28 - Malattie Odontostomatologiche
APPLIED SCIENCES
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/896618
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