Effect of Implant Macro Design on Insertion Torque Pattern

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Effect of Implant Macro Design on Insertion Torque Pattern

Prakan Thanasrisuebwong1,*, Sirichai Kiattavorncharoen2, Ratchapin L Srisatjaluk2, Sirima Sanguansin2, Surakit Visuttiwattanakorn2,#

  1. Master of Science in Implant Dentistry (International Program), Faculty of Dentistry, Mahidol University, Thailand

  2. Faculty of Dentistry, Mahidol University, Thailand

*e-mail: ae13ea@gmail.com, #e-mail: surakit.vis@mahidol.ac.th

Background: Primary implant stability is one of the main factors influencing implant survival rate which can be determine by measuring the insertion torque value.

Purpose: The aim of this study was to demonstrate and analyze the insertion torque pattern of different implant macro designs.

Methodology: Seven implants, i.e., Conelog®Screw-line, Straumann® Standard Plus™, Straumann® Bone Level™, Straumann® Tapered Effect™, Nobelbiocare® Nobel active™, Astra tech® Osseospeed® 4.0S, Astra tech® Osseospeed® 5.0, were placed in bone models made from solid rigid polyurethane block. The implants were selected with the approximate diameter at 4 mm. (mention on the apical of implant) and the length at 12 mm. Each implant was inserted according to the manufacturer’s instructions for bone drilling and used repeatedly seven times. Insertion torque measurement was performed using the digital torque gauge and recorded at every 1-mm depth from starting point to final position. One-way ANOVA was used for statistical analysis for the difference of final insertion torque values obtained from the implant micro-designs.

Result: The final insertion torque values and the patterns were different among the test implant designs (p < .0001). The taper implant macro design group had higher insertion torque values pattern than the cylindrical shape implants.

Conclusion: Results from this study suggest that the implant macro-designs affect the insertion torque value and the higher insertion torque value is obtained from the taper implant design.
Keywords: dental implant, implant design, insertion torque, taper implant
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