Roughness and wettability effect on histological and mechanical response of self-drilling orthodontic mini-implants
Author
BRAVO-GONZÁLEZ, LUIS-ALBERTO
PEGUEROLES, MARTA
Gil Mur, Francisco Javier
Publication date
2016ISSN
1432-6981
Abstract
Self-drilling orthodontic mini-implants can be used as temporary devices for orthodontic treatments. Our main goal was to evaluate surface characteristics, roughness and wettability, of surface modified mini-implants to increase their stability during orthodontic treatment without inducing bone fracture and tissue destruction during unscrewing.; Modified mini-implants by acid etching, grit-blasting and its combination were implanted in 20 New Zealand rabbits during 10 weeks. After that, the bone-to-implant (BIC) parameter was determined and the torque during unscrewing was measured. The surface characteristics, roughness and wettability, were also measured, onto modified Ti c.p. discs.; Acid-etched mini-implants (R (a) a parts per thousand 1.7 mu m, contact angle (CA) a parts per thousand 66A degrees) significantly improved the bone-to-implant parameter, 26 %, compared to as-machined mini-implants (R (a) a parts per thousand 0.3 mu m, CA a parts per thousand 68A degrees, BIC = 19 %) due to its roughness. Moreover, this surface treatment did not modify torque during unscrewing due to their statistically similar wettability (p > 0.05). Surface treatments with higher roughness and hydrophobicity (R (a) a parts per thousand 4.5 mu m, CA a parts per thousand 74A degrees) lead to a greater BIC and to a higher removal torque during unscrewing, causing bone fracture, compared to as-machined mini-implants.; Based on these in vivo findings, we conclude that acid-etching surface treatment can support temporary anchoring of titanium mini-implants.; This treatment represents a step forward in the direction of reducing the time prior to mini-implant loading by increasing their stability during orthodontic treatment, without inducing bone fracture and tissue destruction during unscrewing.
Document Type
Article
Document version
Accepted version
Language
English
Subject (CDU)
616.3 - Pathology of the digestive system. Complaints of the alimentary canal
Keywords
Miniimplants
Tractaments superficials
Osteointegració
Parell motor
Estudis in vivo amb animals
Mini-implantes
Tratamientos superficiales
Osteointegración
Esfuerzo de torsión
Estudios en animales in vivo
Mini-implants
Surface treatments
Osseointegration
Torque
In vivo animal studies
Pages
15
Publisher
Springer Nature
Collection
20;
Is part of
Clinical Oral Investigations
Citation
Espinar-Escalona, Eduardo; Bravo-Gonzalez, Luis-Alberto; Pegueroles Neyra, Marta [et al.]. Roughness and wettability effect on histological and mechanical response of self-drilling orthodontic mini-implants. Clinical oral investigations, 2016, 20(5), p. 1115-1120. Disponible en: <https://link.springer.com/article/10.1007/s00784-016-1770-y>. Fecha de acceso: 12 nov. 2021. DOI: 10.1007/s00784-016-1770-y
This item appears in the following Collection(s)
- Odontologia [248]
Rights
© 2021 Springer Nature Switzerland AG.