A lateral approach for sinus elevation using PRGF technology.
OBJECTIVE
A lateral approach for sinus elevation using plasma rich in growth factors (PRGF) technology is described. The long-term survival of dental implants installed following a two-stage procedure after sinus elevation using this procedure is reported, using implant loss as the outcome variable.


METHODS
A retrospective cohort study design was used. Eighteen patients received 43 implants (BTI implants, Biotechnology Institute, Vitoria, Spain) with sinus floor elevation. All patients presented a residual bone height of class D (1-3 mm). Implants were installed using a low-speed drilling procedure (50 rpm) without irrigation. Finally, the histological and histomorphometric evaluation of eight samples from PRGF grafted sinus involved in the study was carried out 5-6 months posttreatment.


RESULTS
The overall survival rate of dental implants was 100%. The mean follow-up period for all implants was 33 +/- 7 months ranging from 24 to 44 months. In addition, the histomorphometrical evaluation of the samples evidenced a 25.24 +/- 4.62% of vital newly formed bone, 50.31 +/- 15.56% of soft connective tissue, and the remaining 24.46 +/- 12.79% of bovine anorganic bone.


CONCLUSIONS
Based on these results, this new approach for sinus elevation and implant installation using PRGF technology can be considered safe, simple, effective, and predictable.
Anitua
Eduardo
E
Biotechnology Institute, Vitoria, Spain. eduardoanitua@eduardoanitua.com
Prado
Roberto
R
Orive
Gorka
G
D000328:Adult; D000368:Aged; D000818:Animals; D001861:Bone Regeneration / Q000187:drug effects*; D018786:Bone Substitutes; D002417:Cattle; D015331:Cohort Studies; D003758:Dental Implantation, Endosseous / Q000379:methods*; D005260:Female; D006133:Growth Substances / Q000494:pharmacology*; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000601:surgery*; D008875:Middle Aged; D008903:Minerals; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods*; D010949:Plasma / Q000737:chemistry*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014465:Ultrasonics
C077540:Bio-Oss; D018786:Bone Substitutes; D006133:Growth Substances; D008903:Minerals