Dog model for study of supracrestal bone apposition around partially inserted implants.

• A dog model for study of supracrestal bone growth around partially inserted implants is described. The mandibular premolar teeth (P1, P2, P3 and P4) were extracted on both sides of the mandible in four dogs. At a surgical exposure 12 weeks later, two 10 mm titanium implants were partially inserted on each side, 15 mm apart, in the areas of the P1 and the P3 so that five threads protruded from the bone crest. A titanium mesh was fastened to the coronal aspect of the two fixtures and covered with an ePTFE membrane. Thus, a space for potential bone formation was created between the two implants. The surgical flaps were coronally positioned and secured with vertical mattress sutures. After 12 weeks of healing, biopsy specimens were retrieved and examined histologically. In three of the four dogs under study, the partially inserted implants had integrated and the intended large wound spaces had been created around the noninserted parts of the implants. However, bone was not formed around the protruding implants. Accordingly, this experimental model may prove useful for future studies on the use of various procedures that hypothetically may enhance bone formation.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Odontologi (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Dentistry (hsv//eng)

Keyword

Animals

Bicuspid

surgery

Coloring Agents

diagnostic use

Dental Implantation

Endosseous

methods

Dental Implants

Dogs

Image Processing

Computer-Assisted

Mandible

pathology

physiopathology

surgery

Membranes

Artificial

Models

Animal

Osseointegration

Osteogenesis

physiology

Polytetrafluoroethylene

Statistics as Topic

Surface Properties

Surgical Flaps

Surgical Mesh

Titanium

Tolonium Chloride

diagnostic use

Tooth Extraction

Wound Healing

Publication and Content Type

ref (subject category)

art (subject category)