Bone tissue formation adjacent to implants placed in fresh extraction sockets: an experimental study in dogs
- 21 July 2006
- journal article
- Published by Wiley in Clinical Oral Implants Research
- Vol. 17 (4), 351-358
- https://doi.org/10.1111/j.1600-0501.2006.01270.x
Abstract
Objective: To study the healing of marginal defects that occurred at implants placed in a healed ridge or in fresh extraction sockets. Material and methods: Six dogs were used. The right side of the mandible was used in the first part of the study. The first, second premolars and first molars were extracted. After 3 months of healing the bone was prepared for implant installation in these premolar and molar sites. The marginal 5 mm of each recipient site was widened with a conical drill. Following implant installation a gap of varying dimension occurred around the titanium rod (artificial defect (A) sites). At this interval the third and fourth premolars were extracted and implants were installed in the distal socket of the two teeth (natural defect (N) sites). The flaps were sutured to allow non‐submerged healing. After 2 months, the procedures were repeated in the left side. Two months later the animals were euthanized, and biopsies were obtained and prepared for histological examination. Results: The length of the zone of de novo‘bone‐to‐implant contact’ in the defect region was longer at the A sites than at the N sites both at the 2‐ and the 4‐month interval. Further, while after 4 months of healing the marginal bone crest at the A sites was located close to the abutment/fixture junction, at the N sites a marked reduction of the height of the bone crest was documented. Hence, most A site defects became completely resolved whereas healing of the N site defects was incomplete. Conclusion: The process of bone modeling and remodeling at an implant placed in a fresh extraction socket differs from the resolution of marginal defects that may occur following implant installation in a healed ridge.Keywords
This publication has 31 references indexed in Scilit:
- Healing of extraction sockets and surgically produced – augmented and non‐augmented – defects in the alveolar ridge. An experimental study in the dogJournal of Clinical Periodontology, 2005
- Bone regeneration at implants with turned or rough surfaces in self‐contained defects. An experimental study in the dogJournal of Clinical Periodontology, 2005
- Resolution of bone defects of varying dimension and configuration in the marginal portion of the peri‐implant boneJournal of Clinical Periodontology, 2004
- Immediate Implants Covered with Connective Tissue Membranes: Human BiopsiesThe Journal of Periodontology, 2003
- Appositional bone formation in marginal defects at implantsClinical Oral Implants Research, 2003
- The effect of a fibrin glue on the integration of Bio‐Oss® with bone tissueJournal of Clinical Periodontology, 2002
- Immediate transmucosal implants using the principle of guided tissue regeneration. I. Rationale, clinical procedures and 30‐month results.Clinical Oral Implants Research, 1994
- The role of early versus late removal of GTAM® membranes on bone formation at oral implants placed into immediate extraction sockets. An experimental study in dogs.Clinical Oral Implants Research, 1993
- Guided Tissue Regeneration for Implants Placed Into Extraction Sockets: A Study in DogsThe Journal of Periodontology, 1991
- Guided tissue regeneration ensures osseointegration of dental implants placed into extraction sockets. An experimental study in monkeys.Clinical Oral Implants Research, 1991