Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: 01 Dec 2010

Horizontal Ridge Augmentation Utilizing a Composite Graft of Demineralized Freeze-Dried Allograft, Mineralized Cortical Cancellous Chips, and a Biologically Degradable Thermoplastic Carrier Combined With a Resorbable Membrane: A Retrospective Evaluation of 73 Consecutively Treated Cases From Private Practices

DDS, MS,
DDS, MS,
DMD,
DMD, MS,
DDS, and
DDS
Page Range: 467 – 474
DOI: 10.1563/AAID-JOI-D-09-00100
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Abstract

Ridge deficiency is an unfortunate obstacle in the field of implant dentistry. Many techniques are available to rebuild the deficient ridge. Some of these techniques are associated with significant morbidity and often require a second surgical site. With the advent of guided bone regeneration (GBR), one may now graft the deficient ridge with decreased morbidity and without a second surgical site. The purpose of this retrospective consecutive case series from 5 private practices is to report on the outcomes of a composite material of demineralized freeze-dried allograft, mineralized cortical cancellous chips, and a biologically degradable thermoplastic carrier (Regenaform RT) when combined with a resorbable membrane for GBR of lateral ridge defects in human patients. The specific aim was to quantify clinical results through direct measurement. Data were obtained from 73 consecutively treated lateral ridge augmentations performed on 67 partial and/or completely edentate patients. Clinical data (presurgical ridge width, ridge width at implant placement, and bone density at implant placement) were obtained retrospectively from 5 private practices via an exhaustive retrospective chart review, which was pooled and averaged for analysis. The average gain in horizontal ridge width was 3.5 mm (range, 3–6 mm). The density of the bone was noted to be type 2 to 3, with type 3 being the predominant finding. This retrospective case series from 5 clinical private practices suggests that the use of a composite material of demineralized freeze-dried allograft, mineralized cortical cancellous chips, and a biologically degradable thermoplastic carrier, when covered by a resorbable collagen membrane for GBR, is an effective means of horizontal ridge augmentation.

Copyright: 2010 by the American College of Veterinary Internal Medicine
Figure 1–6
Figure 1–6

Figure 1. A horizontal defect as a result of bone loss from tooth extraction.

Figure 2. Flap is reflected, revealing a horizontal defect impeding implant placement. Figure 3. The graft is prepared via the manufacturer's instructions to form a block before placement within the defect. Figure 4. Defect grafted. Figure 5. Flap released and sutured over the membrane and graft. Figure 6. Six months postgrafting with implant placed in adequate ridge of bone postaugmentation.


Figure 7–12
Figure 7–12

Figure 7. Nonrestorable tooth #7 with endodontic lesion noted. Figure 8. A large defect is seen postremoval of tooth and lesion. Figure 9. Defect is grafted before membrane placement. Figure 10. Six months postgraft with implant placed. Figure 11. #7 showing nonrestorable of implant placed in grafted bone. Figure 12. Implant restored 8 months postgrafting.


Figure 13–15
Figure 13–15

Figure 13. Deficient mandibular ridge with temporary implants placed. Figure 14. Ridge grafted with tenting screws before membrane placement. Figure 15. Implants placed 6 months postgrafting.


Contributor Notes

*Corresponding author, e-mail: Navygumdoc@aol.com
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