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Clinical Oral Investigations

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01-09-2016 | Original Article

Osseointegration of titanium implants with SLAffinity treatment: a histological and biomechanical study in miniature pigs

Authors: Keng-Liang Ou, Heng-Jui Hsu, Tzu-Sen Yang, Yun-Ho Lin, Chin-Sung Chen, Pei-Wen Peng

Published in: Clinical Oral Investigations | Issue 7/2016

Abstract

Purpose

Electrochemical oxidation following sandblasting and acid-etching (SLA) treatment has received interest as a surface modification procedure for titanium (Ti) implants (denoted as an SLAffinity surface); however, little information is available on its impacts on the in vivo performance of SLAffinity-Ti implants. The present study evaluated the osseointegration and biomechanical bone-tissue response to SLAffinity-Ti implants with micro- and nanoporous oxide layers.

Materials and methods

The interaction between blood and the tested implants was examined. In total, 144 implants with the following surfaces were used: a standard machined (M-Ti), an SLA-Ti, and an SLAffinity-Ti surface. For each animal, four implants (one M-Ti, one SLA-Ti, and two SLAffinity-Ti) were inserted into the mandibular canine-premolar area for histomorphometric observations and another four implants were inserted into the flat surface on the anteromedial aspect of the rear tibia for removal torque (RT) tests. After 2, 4, and 8 weeks of implantation, histomorphometric and RT tests were conducted.

Results

Interactions between blood and implants were better for implants with the SLAffinity-Ti surface. RT tests showed a significant improvement in fixation strength for SLAffinity-Ti implants (84.5 ± 8.7 N-cm) after 8 weeks compared to M-Ti (62.95 ± 11.5 N-cm) and SLAffinity-Ti (76.1 ± 6.6 N-cm) implants. A histological evaluation showed that osseous integration had occurred with all implants after 8 weeks. SLAffinity-Ti implants exhibited 28.5 ± 6.2 % bone-to-implant contact (BIC) at 2 weeks and 84.3 ± 8.1 % at 8 weeks. M-Ti implants exhibited BIC levels of 17.0 ± 5.4 and 76.5 ± 6.3 %, whereas SLA-Ti implants exhibited BIC levels of 28.5 ± 6.2 and 81.1 ± 8.4 % at corresponding time intervals. In terms of the peri-implant bone area (BA), values for SLAffinity-Ti implants ranged from 29.5 ± 4.1 to 88.3 ± 3.0 %. For M-Ti implants, values ranged from 20.3 ± 5.5 to 81.7 ± 4.2 %. For SLA-Ti implants, values ranged from 23.0 ± 3.5 to 84.0 ± 3.6 %.

Conclusions

Electrochemical oxidation increased the oxide layers and improved the blood interaction with SLAffinity-Ti implants, resulting in significantly higher bone apposition with the SLAffinity-Ti implants after 2 and 8 weeks of healing. An increase in resistance for the RT of SLAffinity-Ti implants over the 8-week healing period was also observed.

Clinical relevance

The use of SLAffinity-Ti implants has potential for improvement of early osseointegration.

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Title: Osseointegration of titanium implants with SLAffinity treatment: a histological and biomechanical study in miniature pigs
Authors: Keng-Liang Ou
Heng-Jui Hsu
Tzu-Sen Yang
Yun-Ho Lin
Chin-Sung Chen
Pei-Wen Peng
Publication date: 01-09-2016
Publisher: Springer Berlin Heidelberg
Published in: Clinical Oral Investigations / Issue 7/2016
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-015-1629-7

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Osseointegration of titanium implants with SLAffinity treatment: a histological and biomechanical study in miniature pigs

Abstract

Purpose

Materials and methods

Results

Conclusions

Clinical relevance

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Materials and methods

Results

Conclusions

Clinical relevance

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