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1. Injectable bone substitute to preserve alveolar ridge resorption after tooth extraction: A study in dog

Author

Guy Daculsi, Paul Pilet, Gael Grimandi, Jérôme Guicheux, Olivier Gauthier, Damien Boix, Jean-Michel Bouler, Pierre Weiss, Weiss, Pierre, Matériaux d'intérêt biologique, Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de chirurgie, Ecole Nationale Vétérinaire de Nantes, Centre de microscopie électronique, and Université de Nantes (UN)

Subjects
Calcium Phosphates, MESH: Bone Resorption, Dentistry, 02 engineering and technology, Osteoconduction, Beagle, In Vivo Test, MESH: Dogs, 0302 clinical medicine, MESH: Animals, MESH: Alveolar Process, Alveolar Ridge Augmentation, 021001 nanoscience & nanotechnology, Resorption, medicine.anatomical_structure, Scaffold, 0210 nano-technology, Materials science, MESH: Tooth Extraction, Biomedical Engineering, Biophysics, MESH: Bone Substitutes, Bioengineering, Article, Bone resorption, Injections, Biomaterials, 03 medical and health sciences, Dogs, stomatognathic system, Alveolar Process, medicine, Alveolar ridge, Animals, MESH: Injections, Bone Resorption, [SDV.IB.BIO]Life Sciences [q-bio]/Bioengineering/Biomaterials, Dental alveolus, Wound Healing, business.industry, Alveolar process, Extraction (chemistry), 030206 dentistry, [SDV.IB.BIO] Life Sciences [q-bio]/Bioengineering/Biomaterials, MESH: Wound Healing, Alveolar Ridge Resorption, Bone Substitutes, Tooth Extraction, Animal Model, business
Abstract

International audience; The aim of the present study was to assess the efficacy of a ready-to-use injectable bone substitute on the prevention of alveolar ridge resorption after tooth extraction. Maxillary and mandibular premolars were extracted from 3 Beagle dogs with preservation of alveolar bone. Thereafter, distal sockets were filled with an injectable bone substitute (IBS), obtained by combining a polymer solution and granules of a biphasic calcium phosphate (BCP) ceramic. As a control, the mesial sockets were left unfilled. After a 3 months healing period, specimens were removed and prepared for histomorphometric evaluation with image analysis. Histomorphometric study allowed to measure the mean and the maximal heights of alveolar crest modifications. Results always showed an alveolar bone resorption in unfilled sockets. Resorption in filled maxillary sites was significantly lower than in control sites. Interestingly, an alveolar ridge augmentation was measured in mandibular filled sockets including 30% of newly-formed bone. It was concluded that an injectable bone substitute composed of a polymeric carrier and calcium phosphate can significantly increase alveolar ridge preservation after tooth extraction.

Published
2006

2. Alveolar bone regeneration for immediate implant placement using an injectable bone substitute: an experimental study in dogs

Author

Olivier Gauthier, Jérôme Guicheux, Damien Boix, Paul Pilet, Guy Daculsi, Pierre Weiss, Gael Grimandi, Matériaux d'intérêt biologique, Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de chirurgie, Ecole Nationale Vétérinaire de Nantes, Centre de microscopie électronique, Université de Nantes (UN), and Weiss, Pierre

Subjects
MESH: Dental Implantation, Endosseous, Ceramics, Bone density, Dentistry, Biocompatible Materials, 02 engineering and technology, Beagle, MESH: Dogs, MESH: Bone Regeneration, Hypromellose Derivatives, 0302 clinical medicine, MESH: Methylcellulose, MESH: Biocompatible Materials, Bone Density, Osteogenesis, MESH: Animals, Tooth Socket, MESH: Dental Implants, MESH: Osteogenesis, MESH: Bone Density, Bone substitutes, MESH: Alveolar Process, MESH: Tooth Socket, Dental Implantation, Endosseous, General Engineering, 021001 nanoscience & nanotechnology, MESH: Calcium Phosphates, Bone regeneration, medicine.anatomical_structure, Periodontics, Female, 0210 nano-technology, MESH: Bone Substitutes, Methylcellulose, Article, Osseointegration, Injections, 03 medical and health sciences, Dogs, MESH: Ceramics, stomatognathic system, Alveolar Process, medicine, Animals, MESH: Injections, [SDV.IB.BIO]Life Sciences [q-bio]/Bioengineering/Biomaterials, Dental alveolus, Wound Healing, business.industry, Alveolar process, Dental implants, MESH: Osseointegration, 030206 dentistry, [SDV.IB.BIO] Life Sciences [q-bio]/Bioengineering/Biomaterials, MESH: Wound Healing, Durapatite, Calcium phosphates, Implant, MESH: Durapatite, business, Wound healing, MESH: Female
Abstract

International audience; BACKGROUND: The aim of the present study was to assess the efficacy of a ready-to-use injectable bone substitute for bone regeneration around dental implants placed into fresh extraction sockets. METHODS: Third and fourth mandibular premolars were extracted from three beagle dogs and the interradicular septa were surgically reduced to induce a mesial bone defect. Thereafter, titanium implants were immediately placed. On the left side of the jaw, mesial bone defects were filled with an injectable bone substitute (IBS), obtained by combining a polymer and biphasic calcium phosphate ceramic granules. The right defects were left unfilled as controls. After 3 months of healing, specimens were prepared for histological and histomorphometric evaluations. RESULTS: No post-surgical complications were observed during the healing period. In all experimental conditions, histological observations revealed a lamellar bone formation in contact with the implant. Histomorphometric analysis showed that IBS triggers a significant (P

Published
2004

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