Sequential Healing at Implants with Different Configuration and Modified Surfaces: An Experimental Study in the Dog.
OBJECTIVE
To evaluate the peri-implant soft and hard tissue adaptation at implants with different modified surfaces and configurations.


METHODS
Six Beagle dogs were used. Mandibular premolars and first molars were extracted bilaterally. After 3 months, full-thickness flaps were elevated, and two different types of trans-mucosal implants (ICX-Gold®, Medentis Medical GmbH, Dernau, Germany and SLActive®, Institute Straumann, Bern, Switzerland) and two different surfaces were randomly installed in the distal regions of one side of the mandible. Abutments were applied, and a nonsubmerged healing was allowed. After 1 month, the procedures were performed in the other side of the mandible, and after a further month, the animals were sacrificed, biopsies were collected, and ground sections prepared for histological examination.


RESULTS
Similar results in marginal bone and soft tissues dimensions were observed after 1 month of healing at the two implant systems used, and no major changes could be observed after 2 months of healing. After 1 month, the percentage of new bone was 69.0% and 68.8% at ICX-Gold and SLActive surfaces, respectively. After 2 months, the percentage of new bone was 67.8% and 71.9% at ICX-Gold Medentis and SLActive surfaces, respectively. No statistically significant differences in osseointegration were found.


CONCLUSIONS
The two implant systems used resulted in similar osseointegration after 1 and 2 months of healing.
Faculty of Dentistry, University of Medical Science, La Habana, Cuba.
Michael T
MT
Schweikert
Faculty of Dentistry, University of Medical Science, La Habana, Cuba.|UNESP - Faculty of Dentistry of Araçatuba, São Paulo State University, São Paulo, Brazil.|ARDEC, Ariminum Odontologica, Rimini, Italy.
Daniele
D
Botticelli
School of Dentistry, University of Padua, Padova, Italy.
Luca
L
Sbricoli
Faculty of Dentistry of Ribeirão Preto, São Paulo University (USP), São Paulo, Brazil.
Antonio
A
Antunes
ARDEC, Ariminum Odontologica, Rimini, Italy.
Vittorio
V
Favero
Faculty of Dentistry of Ribeirão Preto, São Paulo University (USP), São Paulo, Brazil.
Luiz A
LA
Salata
D000818:Animals; D015921:Dental Implants; D017267:Dental Prosthesis Design; D004285:Dogs; D005881:Gingiva / Q000502:physiology* / Q000648:ultrastructure; D008334:Mandible / Q000502:physiology* / Q000648:ultrastructure; D023421:Models, Animal; D016348:Osseointegration / Q000502:physiology*; D011897:Random Allocation; D014945:Wound Healing / Q000502:physiology*
D015921:Dental Implants
SLActive; animal study; bone; bone healing; early healing; histology; implant dentistry; implant surface; nonsubmerged healing; osseointegration