Porous Hydroxyapatite and Aluminium-Oxide Ceramic Orbital Implant Evaluation Using CBCT Scanning: A Method for In Vivo Porous Structure Evaluation and Monitoring.

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dc.contributor.author Lukáts, Olga -
dc.contributor.author Bujtár, Péter -
dc.contributor.author Sándor, George K -
dc.contributor.author Barabás, Jósef -
dc.date.accessioned 2012-06-17T20:15:39Z
dc.date.available 2012-06-16 16:06:34 -
dc.date.available 2012-06-17T20:15:39Z
dc.date.issued 2012 -
dc.identifier.issn 1687-8787 -
dc.identifier.uri http://tampub.uta.fi/handle/10024/66108
dc.description Hindawi open access -
dc.description.abstract Objective. This study aimed to define CBCT as a technique for postimplantation in vivo examination of porous hydroxyapatite and aluminium-oxide orbital implant shape, volume and density changes. Methods and Materials. CBCT was used to evaluate 30 enucleated patients treated with spherical polyglactin 910 wrapped hydroxyapatite and aluminum-oxide orbital implants. The mean duration of patient followup was 3.2 years or 1338 days with a range of 0.2 to 7.2 years or 79 to 2636 days in a population with an average age of 40.8 years. Results. The resolution of currently clinically used CBCT equipment allowed detailed structural observation of the orbital hydroxyapatite implants with some modifications. Volume and shape estimations were possible while density evaluation was more complicated compared to medical source computed tomography. The mean densities of the orbital implants were followed and a consistent gradual decrease identified from the beginning of implantation which was better defined after the applied correction procedure. Conclusion. CBCT with lower dosages of radiation exposure can be used to follow changes in implanted high-density porous structures. The density evaluation is possible with calibration modifications. Changes in orbital implant densities identified in this study may correspond to healing and maturation of soft tissues surrounding and penetrating the implants. -
dc.language.iso en -
dc.title Porous Hydroxyapatite and Aluminium-Oxide Ceramic Orbital Implant Evaluation Using CBCT Scanning: A Method for In Vivo Porous Structure Evaluation and Monitoring. -
dc.type fi=Artikkeli aikakauslehdessä | en=Journal article| -
dc.identifier.urn urn:nbn:uta-3-977 -
dc.identifier.doi 10.1155/2012/764749 -
dc.type.version fi=Kustantajan versio | en=Publisher's version| -
dc.subject.okm fi=Lääketieteen bioteknologia | en=Medical biotechnology| -
dc.administrativeunit fi=Biolääketieteellisen teknologian yksikkö | en=Institute of Biomedical Technology| -
dc.journal.title International Journal of Biomaterials -
dc.journal.volume 2012 -
dc.journal.number ID 764749 -
dc.journal.volumepagerange 1-9 -
dc.oldstats 31 -

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