O-Ring Attachments on One-Piece Mini Dental Implants: In-Vitro Analysis of Retention Force Reproducibility Using Different Pristine Matrix-O-Ring Combinations.

Abou-Ayash, Samir; Schimmel, Martin; Worni, Andreas; Enkling, Norbert (2021). O-Ring Attachments on One-Piece Mini Dental Implants: In-Vitro Analysis of Retention Force Reproducibility Using Different Pristine Matrix-O-Ring Combinations. (In Press). The international journal of prosthodontics Quintessence Publishing 10.11607/ijp.7055

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PURPOSE

To analyze the influence of pristine matrix and O-ring dimensions on retention force and reproducibility in single one-piece mini dental implants (MDIs) with ball patrices under in vitro conditions.

MATERIALS AND METHODS

Three different matrix and O-ring combinations (MH1-MH3) were evaluated (n = 50 per group) on 1.8-mm-diameter implants. The matrices were manually mounted on the implants and were subsequently removed in a vertical linear manner using a metal pin with two strain gauges, recording the maximum force during disconnection. After five disconnections, the O-rings were exchanged, and the mean retention force was calculated, resulting in 50 values for each matrix and O-ring combination. Mean retention forces, SDs, and 95% CI were calculated. Analysis of variance was used to test the global differences, and post hoc pairwise comparisons were subsequently applied. The level of significance was set to P < .05.

RESULTS

ANOVA (global P < .0001) and pairwise comparisons (all P < .0001) demonstrated statistically significant differences among the three different matrix and O-ring combinations, with mean values of 5.18 N (MH 1), 6.73 (MH 2), and 9.08 (MH 3). Within each combination, retention force variations of > 1 N could not be demonstrated; ie, by exchanging O-rings, a similar retention force can be reestablished.

CONCLUSION

Matrix and O-ring dimensions have a significant influence on retention forces in one-piece MDIs. Pristine O-rings demonstrated highly reproducible initial retention forces in all matrices.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology

UniBE Contributor:

Abou-Ayash, Samir; Schimmel, Martin and Enkling, Norbert

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1942-4426

Publisher:

Quintessence Publishing

Language:

English

Submitter:

Tina Lauper

Date Deposited:

04 May 2021 10:17

Last Modified:

04 May 2021 10:17

Publisher DOI:

10.11607/ijp.7055

PubMed ID:

33625384

BORIS DOI:

10.7892/boris.153460

URI:

https://boris.unibe.ch/id/eprint/153460

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