Effect of dehiscences to the bone response of implants with an Acid-etched surface: an experimental study in miniature pigs.

Spontaneous early exposure of submerged implants during the healing phase as a factor for early crestal bone loss around the implants is still being controversially discussed. The aim of this study was to examine the potential impact of dehiscences on the osseointegration process of acid-etched dental implants with a shortened healing period in the maxilla. Five animals received a total of 15 titanium implants 8 weeks postextraction.

Miniature pigs as an animal model for implant research: bone regeneration in critical-size defects.

Objective: Standardized experimental investigations determining the critical-size defect (CSD) in the mandible of miniature pigs are still lacking. The aim of the present study was to obtain information about the new bone formation in created defects of varying sizes.

Study Design: Marginal resection of the alveolar crest of the lower jaw was performed in 3 female miniature pigs.