Relevant aspects of the dental implant design on the insertion torque, resonance frequency analysis (RFA) and micromobility: an in vitro study
Author
Falcao, Artur
Tondela, João Paulo
Brizuela, Aritza
Ríos Carrasco, Blanco
Publication date
2023ISSN
2077-0383
Abstract
The major problems for the osseointegration of dental implants are the loosening of the screw that fixes the dental implant to the abutment and the micromovements that are generated when mechanical loads are applied. In this work, torque differences in the tightening and loosening of the connection screws after 1 cycle, 10 cycles and 1000 cycles for 4 dental implants with 2 external and 2 internal connections were analyzed. The loosening of 240 implants (60 for each system) was determined using high-precision torsimeters and an electromechanical testing machine. A total of 60 dental implants for each of the 4 systems were inserted into fresh bovine bone to determine the micromovements. The implant stability values (ISQ) were determined by RFA. The mechanical loads were performed at 30° from 20 N to 200 N. By means of the Q-star technique, the micromovements were determined. It was observed that, for a few cycles, the loosening of the screw did not exceed a loss of tightening of 10% for both connections. However, for 1000 cycles, the loss for the external connection was around 20% and for the internal connection it was 13%. The micromovements showed a lineal increase with the applied load for the implant systems studied. An external connection presented greater micromotions for each level of applied load and lower ISQ values than internal ones. An excellent lineal correlation between the ISQ and micromobility was observed. These results may be very useful for clinicians in the selection of the type of dental implant, depending on the masticatory load of the patient as well as the consequences of the insertion torque of the dental implant and its revisions.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
616.3 - Pathology of the digestive system. Complaints of the alimentary canal
Keywords
Implant dental
Inserció de parell
Connexió externa
Connexió interna
Micromobilitat
Anàlisi de freqüència de ressonància
Implante dental
Inserción de torsión
Conexión externa
Conexión interna
Micromovilidad
Análisis de frecuencia de resonancia
Dental implant
Torque insertion
External connection
Internal connection
Micromobility
Resonance frequency analysis
Pages
13
Publisher
MDPI
Collection
12;3
Is part of
Journal of Clinical Medicine
Citation
Herrero-Climent, Mariano; Falcao, Artur; Tondela, João Paulo [et al.]. Relevant aspects of the dental implant design on the insertion torque, resonance frequency analysis (RFA) and micromobility: an in vitro study. Journal of Clinical Medicine, 2023, 12(3), 855. Disponible en: <https://www.mdpi.com/2077-0383/12/3/855>. Fecha de acceso: 23 feb. 2023. DOI: 10.3390/jcm12030855
Link to the related item
This item appears in the following Collection(s)
- Odontologia [228]
Rights
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/