J Korean Assoc Oral Maxillofac Surg.  2009 Oct;35(5):340-345.

A Retrospective Study of the Surgical Success and Vertical Bone Resorption Rate after Autogenous Block Onlay Graft in Posterior Maxilla

• Myoung MR
• Kim MR
• Kim SJ

Abstract

PURPOSE
The purpose of this study was to evaluate the surgical success of bone reconstruction of the severely atrophic maxilla using autogenous block bone onlay graft from the ramus and ilium prior to dental implantation. And we measured the amount of vertical height change MATERIAL AND METHODS: 26 partially edentulous patients(32 case) who needed block onlay bone graft before implant placement in posterior maxillary area from 2002 to 2009 were selected for this study. Patients consisted of 20 males &6 females and the average of their age was 54.2. Patients who were treated with ramal bone were 19 case and patients who were treated with iliac bone were 11 case. Digital panoramic X-ray was taken at the day of surgery, 3 months and 6 months later after the surgery. Vertical height change&resorption rate of grafted bone were measured with the same X-rays and compared
RESULTS
Two out of 32 bone grafts had to be removed because of inflamation at the grafts area(97.3%). The mean of radiographic vertical height change(change rate) of post-op. 3 month was 0.54mm(8.5%)and 6 month was 0.99mm(15.9%). Compairing to intraoral donor site(ramus), iliac bone had more vertical height change(1.18mm) at 6 month after surgery.
CONCLUSIONS
Within the limit of this study, autogenous block onlay grafts can be considered a promising treatment for severely atrophic maxilla.

Keyword

Maxilla; Onlay bone graft; bone resorption

MeSH Terms

Bone Resorption
Dental Implantation
Dental Implants
Female
Humans
Ilium
Inlays
Male
Maxilla
Retrospective Studies
Tissue Donors
Transplants
Dental Implants