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Laryngoscope Investigative Otolaryngology
Article . 2018 . Peer-reviewed
License: CC BY NC ND
Data sources: Crossref
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Laryngoscope Investigative Otolaryngology
Article
License: CC BY NC ND
Data sources: UnpayWall
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PubMed Central
Article . 2018
Data sources: PubMed Central
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Evaluation of absorbable PLA nasal implants in an ovine model

Authors: Marian K. Rippy; Scott Baron; Mike Rosenthal; Brent A. Senior;

Evaluation of absorbable PLA nasal implants in an ovine model

Abstract

ABSTRACTObjectiveTo examine biocompatibility and absorption profile of a poly (L‐lactide‐co‐D,L‐lactide) 70:30 nasal implant.MethodsIn an ovine model, 66 rod‐shaped absorbable implants were placed in 11 nasal dorsa. The sheep were sacrificed at 1.5 (N = 3), 6 (N = 3), 12 (N = 3), 18 (N = 1), and 24 months (N = 1). The nasal dorsum was harvested from each animal. Gross and histopathological examinations were performed.ResultsThere were no postoperative complications, signs of infection, or tissue rejection throughout follow‐up time points. Upon sacrifice, no abnormalities were identified during gross pathological examinations. The histology of the implant sites at all time points showed the implants were fully encapsulated through 12 months. The inflammatory reaction to the implants was minimal to mild at 1.5, 6, and 12 months. At 18 months the implant material was in the mass loss phase, being actively absorbed. During this phase, the inflammatory reaction within the fibrous connective tissue capsule reached expected moderate levels. By 24 months, the inflammatory reaction had diminished in most implantation sites and complete absorption of the rod implants was noted at some sites with nodular bundles of mature collagenized fibrous tissue replacing the implant, devoid of an inflammatory infiltrate.ConclusionBiocompatibility of the poly (L‐lactide‐co‐D,L‐lactide) 70:30 material was demonstrated when used as a nasal implant in the nasal dorsum ovine model. Absorption of the implant occurred approximately 18 to 24 months postoperatively, and the implant site was replaced with collagenized fibrous tissue.Level of EvidenceNA.

Related Organizations
Keywords

Allergy, Rhinology, and Immunology

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
19
Top 10%
Top 10%
Top 10%
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gold