Implant-to-bone force transmission: a pilot study for in vivo strain gauge measurement technique

Cozzolino, Fabio; Apicella, Davide; Wang, Guixue; Apicella, Antonio; Sorrentino, Roberto

doi:10.1016/j.jmbbm.2018.10.014

Cited by 27 publications

(16 citation statements)

References 19 publications

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“…erefore, there is less stress in the abutment screws as compared to the external butt joint. e cold welding inherent to this system favors the torque gain as the friction between the internal implant surfaces and the conical abutment, which makes high stability [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Effect of Four Different Abutment Screw Torques on Screw Loosening in Single Implant-Supported Prosthesis after the Application of Mechanical Loading

Ebadian

Fathi

Khodadad

2021

International Journal of Dentistry

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Background. The complications of implant-supported prostheses can be classified into mechanical and biological ones, one part of which is associated with screw loosening. This study was aimed to compare the effect of four different abutment screw torque techniques on screw loosening in single implant-supported prostheses following the application of mechanical loading. Materials and Methods. In this experimental study, a total of 40 implants in acrylic blocks (6 × 10 × 20 mm) were mounted perpendicular to the surface. They were then randomly divided into four groups: (1) torquing once with 30 Ncm, (2) torquing three times with 30 Ncm and 5-minute intervals, (3) torquing once with 30 Ncm, opening the screw, and retorquing with 30 Ncm, and (4) torquing once with 35 Ncm. The torque values were confirmed by using a digital torque meter. Then, the samples underwent a force (2 cps, 0.453–11.793 kg) for three hours before the measurement of detorque values. The screw loosening force (torque) was then measured and recorded. The obtained data were analyzed by SPSS (version 22) software using one-way ANOVA and Tukey post hoc test at a 5% error level. Results. The maximum mean detorque values of the abutment screws in single implant-supported prostheses were reported for groups 4 (27.8 ± 1.3), 1 (26.8 ± 1.3), and 3 (25.1 ± 1.3), and the minimum mean detorque value was found in group 2 (24.9 ± 1.2). Moreover, no significant difference was observed between groups 2 and 3 ( p > 0.05 ), but a significant difference was found between groups 1 and 3 and other groups ( p < 0.05 ). Conclusion. The increase in the torque value increased the torque loss. However, the detorque value in group 4 showed the least difference with the value recommended by the manufacturer (30 Ncm).

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Section: Introductionmentioning

confidence: 99%

Comparison of the Effect of Four Different Abutment Screw Torques on Screw Loosening in Single Implant-Supported Prosthesis after the Application of Mechanical Loading

Ebadian

Fathi

Khodadad

2021

International Journal of Dentistry

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“…However, modern implant designs and surfaces have reduced the reliance on length to achieve adequate primary stability (Abboud et al, 2020). Furthermore, it has been demonstrated that the biomechanical forces from occlusion around dental implants are concentrated around the first 6‐8 mm of bone‐implant contact, and it is suggested that additional implant length beyond this may be superfluous once osseointegration has occurred (Anitua et al, 2010; Cozzolino et al, 2019; Himmlová et al, 2004; Moriwaki et al, 2016). Based on numerous systematic reviews, implants equal to or less than 8 mm in length have survival similar to that of longer implants (Fan et al, 2017; Renouard & Nisand, 2006; Thoma et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Tilted versus axial implant distribution in the posterior edentulous maxilla: A CBCT analysis

Hamilton

Jamjoom

Alnasser

et al. 2021

Clinical Oral Implants Res

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Objectives: This study aimed to determine whether distally angulating an implant is a successful strategy to avoid the maxillary sinus and the need for bone augmentation, while increasing the anterior-posterior (A-P) implant distribution in the edentulous maxilla. Materials and Methods:In 115 patients with edentulous maxillae, virtual implant planning was performed utilizing cone-beam computer tomographs. Axial (8 mm length) and tilted (12 mm length) dental implants with 30-degree and 45-degree angulation were virtually positioned to avoid entering the maxillary sinus, while maximizing A-P distribution. Measurements were made between the tilted and axial implants to assess the change in A-P distribution of implants at the implant and abutment levels.Results: Forty-seven sites (20.4%) were not able to have either treatment modality with insufficient bone for implant placement. Axial implants were placed more distally than 45-degree and 30-degree tilted implants in 24% and 42% of sites, respectively. The average change in A-P spread measured at the implant level, for 30-and 45-degree tilted implants was −0.25 mm (95% CI −0.76, 0.26) and 1.9 mm (95% CI 1.4, 2.3), respectively. When measured from the center of each multi-unit abutment the average increase in A-P distances for tilted implants appears larger in the 30-degree and 45-degree groups by 0.97 mm and 1.74 mm, respectively compared to measurements at the implant level.Conclusions: Angulating 12 mm implants provides a limited increase in A-P distribution of implants in edentulous rehabilitation in most situations. In certain patients, the use of 8mm axial implants may provide a greater A-P spread.

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“…The use of strain-gauge in both in vitro and in vivo strain assessment is documented. (12,32,44,45) Owing to the small size and linearity of the resistance rate change, strain gauge analysis is one of the best possible tools for assessing microscopic deformation with minimal intervention during testing. (34) Additionally, strain gauges give quantitative strain assessments.…”

Section: Discussionmentioning

confidence: 99%

Strains Induced in CAD/CAM Milled Mandibular Implant Retained Overdentures In vivo Strain Gauge Analysis

Gomaa

2019

Egyptian Dental Journal

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Implant-to-bone force transmission: a pilot study for in vivo strain gauge measurement technique

Cited by 27 publications

References 19 publications

Comparison of the Effect of Four Different Abutment Screw Torques on Screw Loosening in Single Implant-Supported Prosthesis after the Application of Mechanical Loading

Comparison of the Effect of Four Different Abutment Screw Torques on Screw Loosening in Single Implant-Supported Prosthesis after the Application of Mechanical Loading

Tilted versus axial implant distribution in the posterior edentulous maxilla: A CBCT analysis

Strains Induced in CAD/CAM Milled Mandibular Implant Retained Overdentures In vivo Strain Gauge Analysis

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