Horizontal bone grafting using equine-derived cancellous bone blocks is associated with severe complications: A prospective clinical and histological pilot study.
alveolar ridge grafting
augmentation
clinical trial
dental implants
equine bone
histology
Journal
Clinical oral implants research
ISSN: 1600-0501
Titre abrégé: Clin Oral Implants Res
Pays: Denmark
ID NLM: 9105713
Informations de publication
Date de publication:
Nov 2020
Nov 2020
Historique:
received:
11
02
2020
revised:
30
07
2020
accepted:
21
08
2020
pubmed:
4
9
2020
medline:
15
12
2020
entrez:
4
9
2020
Statut:
ppublish
Résumé
The aim of this prospective, clinical study was to evaluate the clinical performance and histological outcome of a new equine hydroxyapatite collagenated bone block (eHAC) for horizontal bone grafting prior to implant placement. Five patients (two male/three female) with a mean age of 51.6 years (range 22-66 years) and a reduced horizontal bone width of the alveolar ridge (mean 3.5 mm) underwent horizontal bone grafting using eHAC at 10 grafting sites. Reentry was performed 6.9 months after the horizontal grafting procedure. Clinical follow-up (mean 28.9 month) considered width gain of the alveolar ridge, soft tissue healing, and complications. To evaluate graft incorporation, four additional patients underwent histological assessment of equine blocks adjacent to autologous blocks 3 and 6 months after grafting. The study was terminated after graft failure was observed in four of five patients. Mean horizontal bone width had increased by 3.6 ± 1.22 mm. Three out of nine implants placed had to be removed due to graft failure. Histological evaluation revealed large amounts of soft connective tissue within the grafts (mean 67.3 ± 9.5%). The proportion of new bone formation 3 months after the lateral grafting procedure revealed an average of 8.6%, compared to 11.4% after 6 to 7 months. Lateral ridge grafting using eHAC achieved measurable horizontal width gain but revealed high rates of severe complications. Within the limitations of this study, eHAC bone blocks cannot be recommended for horizontal bone grafting.
Types de publication
Journal Article
Langues
eng
Pagination
1149-1158Subventions
Organisme : Geistlich Pharma AG
Informations de copyright
© 2020 The Authors. Clinical Oral Implants Research published by John Wiley & Sons Ltd.
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