Primary stability of simultaneously placed dental implants in extraoral donor graft sites: a human cadaver study.
OBJECTIVE
To compare the primary stability of dental implants placed in fibula, iliac crest, and scapula of human cadavers.


METHODS
Straumann Dental Implants (Institut Straumann, Basel, Switzerland) 4.1 mmx10 mm in diameter were placed into bilateral fibula, iliac crest, and scapula of 4 fresh human cadavers. For the assessment of primary stability of implants, installation torque values (ITV) and removal torque values (RTV) were measured using a custom-made strain-gauged torque wrench, and resonance frequency analysis was carried out to quantify the implant stability quotients (ISQ). Bone specimens from each donor site were harvested to perform radiographic and histomorphometric analyses. Linear distance and optical density (OD) measurements were made on digitized parallel periapical radiographs and bone area fraction (BAF) was calculated on digitized images of decalcified histologic sections.


RESULTS
Fibula donor site presented higher ITVs and RTVs and cortical bone height for implants than other sites (P<.05). BAF measurements for iliac crest were higher than fibula and scapula bone donor sites. OD was higher in the iliac crest followed by scapula and fibula.


CONCLUSIONS
The primary mechanical stability of implants placed in the fibula is higher than those placed in the iliac crest and the scapula, although the bone mass and density around implants in latter sites are higher.
Akkocaoglu
Murat
M
Department of Oral Surgery, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
Cehreli
Murat Cavit
MC
Tekdemir
Ibrahim
I
Comert
Ayhan
A
Güzel
Elif
E
Dağdeviren
Attila
A
Akca
Kivanc
K
D000368:Aged; D015519:Bone Density; D016025:Bone Transplantation / Q000502:physiology*; D002102:Cadaver; D003758:Dental Implantation, Endosseous / Q000379:methods*; D017268:Dental Prosthesis Retention; D003799:Dental Stress Analysis; D005260:Female; D005360:Fibula / Q000502:physiology* / Q000601:surgery; D006801:Humans; D007085:Ilium / Q000502:physiology* / Q000601:surgery; D020007:Implants, Experimental; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D012540:Scapula / Q000502:physiology* / Q000601:surgery; D018709:Statistics, Nonparametric; D019415:Torque; D014732:Vibration