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Laser-Doppler microvascular measurements in the peri-implant areas of different osseointegrated bone conductor implant systems

  • Otology
  • Published:
European Archives of Oto-Rhino-Laryngology Aims and scope Submit manuscript

Abstract

The objective of this study was to evaluate the impact of hydroxyapatite coating of newly designed osseointegrated fixtures’ abutments on the postoperative complication rates. The integrity of peri-implant microcirculation was used as a marker to compare tissue viability after different surgical techniques. Laser-Doppler Flowmetry (LDF) measures alone, and coupled with heat provocation tests were applied to test the different microcircular patterns. Measures for 17 consecutively implanted patients (8 women, 9 men, ages ranged from 18 to 77 years) were recruited; seven with soft tissue reduction (STR); and 10 with soft tissue preservation (STP).Thirteen non-operated retro-auricular areas were examined as naive controls. In isotherm conditions the baseline blood flow remained stable in all groups. The naive control patients demonstrated significant changes of blood flux in the intact skin. The non-implanted yet previously operated contralateral sides of the patients demonstrated marginally lower (p = 0.09) blood flux index. The STR sides however, showed significantly lower (average 217 %) provoked blood flux compared to controls (p < 0.001). At the STP sides a maladaptation could be observed (average 316 %) compared to the contralateral sides (p = 0.53). STP sides demonstrated a significantly better blood flow improvement compared to the STR sides (p = 0.02). These results suggest a favorable postoperative condition of vascular microcirculation after STP, than after STR surgery. The possibly faster wound healing and lower potential complication rate may widen the inclusion criteria and maybe beneficial for the patient compliance with a better quality-of-life.

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Abbreviations

LDF:

Laser-Doppler Flowmetry

LHT:

Local hyperaemia test

PU:

Perfusion unit

STR:

Soft tissue reduction

STP:

Soft tissue preservation

STSF:

Split thickness skin flap

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Acknowledgments

The publication is supported by the European Union and co-funded by the European Social Fund. Project title: “Telemedicine-focused research activities on the field of Mathematics, Informatics and Medical sciences” Project number: TÁMOP-4.2.2.A-11/1/KONV-2012-0073. Project title: “Neurobiology: cochlear implantation.” Project number: TÁMOP-4.2.2.A-11/1/KONV-2012-0052.

Conflict of interest

None of the authors have any financial or personal relationships with other people or organizations that could inappropriately influence the author’s actions.

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Authors and Affiliations

  1. Department of Otorhinolaryngology and Head-Neck Surgery, University of Szeged, Tisza Lajos körút 111., Szeged, 6725, Hungary

    János Jarabin, Zsófia Bere, Ferenc Tóth, József Géza Kiss & László Rovó

  2. Institute of Surgical Research, University of Szeged, Szőkefalvi-Nagy Béla utca 6., Szeged, 6720, Hungary

    Petra Hartmann

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  1. János Jarabin
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  2. Zsófia Bere
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  5. József Géza Kiss
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Correspondence to János Jarabin.

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Jarabin, J., Bere, Z., Hartmann, P. et al. Laser-Doppler microvascular measurements in the peri-implant areas of different osseointegrated bone conductor implant systems. Eur Arch Otorhinolaryngol 272, 3655–3662 (2015). https://doi.org/10.1007/s00405-014-3429-0

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