Clinical and Histomorphometric Assessment of Lateral Alveolar Ridge Augmentation Using a Corticocancellous Freeze-Dried Allograft Bone Block

2017 ◽  
Vol 43 (3) ◽  
pp. 202-210 ◽  
Author(s):  
Roya Shariatmadar Ahmadi ◽  
Ferena Sayar ◽  
Vahid Rakhshan ◽  
Babak Iranpour ◽  
Jahanfar Jahanbani ◽  
...  
Keyword(s):  
Clinical Success ◽  
Bone Allograft ◽  
Bone Block ◽  
Graft Material ◽  
Alveolar Ridge Augmentation ◽  
Ridge Augmentation ◽  
Freeze Dried ◽  
Lateral Ridge ◽  
Ridge Width ◽  
Lateral Ridge Augmentation

Horizontal ridge augmentation with allografts has attracted notable attention because of its proper success rate and the lack of disadvantages of autografts. Corticocancellous block allografts have not been adequately studied in humans. Therefore, this study clinically and histomorphometrically evaluated the increase in ridge width after horizontal ridge augmentation using corticocancellous block allografts as well as implant success after 12 to 18 months after implantation. In 10 patients receiving implants (3 women, 7 men; mean age = 45 years), defective maxillary alveolar ridges were horizontally augmented using freeze-dried bone allograft blocks. Ridge widths were measured before augmentation, immediately after augmentation, and ∼6 months later in the reentry surgery for implantation. This was done at points 2 mm (A) and 5 mm (B) apically to the crest. Biopsy cores were acquired from the implantation site. Implant success was assessed 15.1 ± 2.7 months after implantation (range = 12–18 months). Data were analyzed using Friedman and Dunn tests (α = 0.05). At point A, ridge widths were 2.77 ± 0.37, 8.02 ± 0.87, and 6.40 ± 0.66 mm, respectively, before surgery, immediately after surgery, and before implantation. At point B, ridge widths were 3.40 ± 0.39, 9.35 ± 1.16, and 7.40 ± 1.10 mm, respectively, before surgery, immediately after surgery, and before implantation. The Friedman test showed significant increases in ridge widths, both at point A and point B (both P = .0000). Postaugmentation resorption was about 1.5–2 mm and was statistically significant at points A and B (P < .05, Dunn). The percentage of newly formed bone, residual graft material, and soft tissue were 33.0% ± 11.35% (95% confidence interval [CI] = 24.88%–41.12%), 37.50% ± 19.04% (95% CI = 23.88%–51.12%), and 29.5%, respectively. The inflammation was limited to grades 1 or zero. Twelve to 18 months after implantation, no implants caused pain or showed exudates or pockets. Radiographic bone loss was 2.0 ± 0.7 mm (range = 1–3). It can be concluded that lateral ridge augmentation with corticocancellous allograft blocks might be successful both clinically and histologically. Implants might have a proper clinical success after a minimum of 12 months.

scholarly journals Lateral Ridge Augmentation with Autogenous Bone Harvested Using Trephine Drills: A Noninvasive Technique

2016 ◽  
Vol 10 (1) ◽  
pp. 1-11 ◽  
Author(s):  
H. R. Arab ◽  
A. Moeintaghavi ◽  
M. Taheri ◽  
N. Sargolzaie ◽  
D. Aghasizadeh ◽  
...  
Keyword(s):  
Clinical Investigation ◽  
Donor Site ◽  
Autogenous Bone ◽  
Noninvasive Technique ◽  
Recipient Site ◽  
Ridge Augmentation ◽  
Non Invasive ◽  
Lateral Ridge ◽  
Ridge Width ◽  
Lateral Ridge Augmentation

Purpose:The aim of this pilot study was to evaluate the success rate of a chairside ridge augmentation procedure using bone autografts harvested with trephine drills and placed without the use of screws.Methods:Thirty patients were recruited for the study. After the surgical site was anesthetized and a crestal incision was made, an envelope flap was retracted using blunt dissection limited to the graft site, and the periosteum was raised intact and undamaged from the bone. The flap was extended laterally to obtain sufficient space for the bone graft. At the donor site, bone was obtained from the external oblique ridge area. A #5 or #6 trephine drill was used to harvest one or two pieces of bone. The bone blocks were placed inside the envelope flap at the recipient site, which was then sutured and covered with periodontal dressing. Antibiotics, analgesics, and mouthwash were prescribed. Measurements of ridge width were performed using CBCT before and 3 months after surgery. The pre- and post operative results were compared using paired t test.Results:Pre- and post-operative mean ridge widths were 2.23 ± 0.79 and 5.16 ± 0.68 mm, respectively. The mean increase in width was 2.92 ± 0.89 mm(P< 0.001).Conclusion:This non-invasive and simple technique provided an acceptable increase in ridge width. As the sample was small, we recommend further clinical investigation with larger samples to confirm that this technique may be used successfully as an alternative to current invasive augmentation methods.

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

2010 ◽  
Vol 36 (6) ◽  
pp. 467-474 ◽  
Author(s):  
Nicholas Toscano ◽  
Danny Holtzclaw ◽  
Ziv Mazor ◽  
Paul Rosen ◽  
Robert Horowitz ◽  
...  
Keyword(s):  
Composite Material ◽  
Measurement Data ◽  
Case Series ◽  
Collagen Membrane ◽  
Ridge Augmentation ◽  
Private Practices ◽  
Implant Placement ◽  
Freeze Dried ◽  
Lateral Ridge ◽  
Ridge Width

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.

scholarly journals Volumetric changes in edentulous alveolar ridge sites utilizing guided bone regeneration and a custom titanium ridge augmentation matrix (CTRAM): a case series study

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Craig E. Hofferber ◽  
J. Cameron Beck ◽  
Peter C. Liacouras ◽  
Jeffrey R. Wessel ◽  
Thu P. Getka
Keyword(s):  
Case Series ◽  
Bone Allograft ◽  
Volumetric Analysis ◽  
Collagen Membrane ◽  
Ridge Augmentation ◽  
Implant Placement ◽  
Case Series Study ◽  
Freeze Dried ◽  
Clinical Measurements ◽  
Bone Gain

Abstract Background The purpose of this study was to evaluate the volumetric changes in partially edentulous alveolar ridges augmented with customized titanium ridge augmentation matrices (CTRAM), freeze-dried bone allograft, and a resorbable collagen membrane. Methods A pre-surgical cone beam computed tomography (CBCT) scan was obtained for CTRAM design/fabrication and to evaluate pre-surgical ridge dimensions. Ridge augmentation surgery using CTRAM, freeze-dried bone allograft, and a resorbable collagen membrane was performed at each deficient site. Clinical measurements of the area of augmentation were made at the time of CTRAM placement and re-entry, and a 2nd CBCT scan 7 months after graft placement was used for volumetric analysis. Locations of each CTRAM in situ were also compared to their planned positions. Re-entry surgery and implant placement was performed 8 months after CTRAM placement. Results Nine subjects were treated with CTRAM and freeze-dried bone allograft. Four out of the nine patients enrolled (44.4%) experienced premature CTRAM exposure during healing, and in two of these cases, CTRAM were removed early. Early exposure did not result in total graft failure in any case. Mean volumetric bone gain was 85.5 ± 30.9% of planned augmentation volume (61.3 ± 33.6% in subjects with premature CTRAM exposure vs. 104.9% for subjects without premature exposure, p = 0.03). Mean horizontal augmentation (measured clinically) was 3.02 mm, and vertical augmentation 2.86 mm. Mean surgical positional deviation of CTRAM from the planned location was 1.09 mm. Conclusion The use of CTRAM in conjunction with bone graft and a collagen membrane resulted in vertical and horizontal bone gain suitable for implant placement.

The Bone Lamina Technique: A Novel Approach for Lateral Ridge Augmentation—A Case Series

2013 ◽  
Vol 33 (4) ◽  
pp. 491-497 ◽  
Author(s):  
Hannes Wachtel ◽  
Stefan Fickl ◽  
Marc Hinze ◽  
Wolfgang Bolz ◽  
Tobias Thalmair
Keyword(s):  
Case Series ◽  
Ridge Augmentation ◽  
Novel Approach ◽  
Lateral Ridge ◽  
Lateral Ridge Augmentation
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