A clinical study of changes in the volume of bone grafts in the atrophic maxilla

Johansson, B; Grepe, A; Wannfors, Karin; Hirsch, Jan‐Michaél

doi:10.1038/sj.dmfr.4600601

Cited by 202 publications

(216 citation statements)

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“…Although the literature suggests that CBCT images could provide reliable information regarding the fate of the bone graft [10,11], systematic information regarding the protocols of the image-oriented software evaluating the grafts is not available. There seems to be no standardization regarding the CBCT settings, properties, and radiation dose.…”

Section: Introductionmentioning

confidence: 99%

Exploring CBCT-Based DICOM Files. A Systematic Review on the Properties of Images Used to Evaluate Maxillofacial Bone Grafts

et al. 2011

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Previous studies suggests that cone beam computerized tomography (CBCT) images could provide reliable information regarding the fate of bone grafts in the maxillofacial region, but no systematic information regarding the standardization of CBCT settings and properties is available, i.e., there is a lack of information on how the images were generated, exported, and analyzed when bone grafts were evaluated. The aim of this study was to (1) do a systematic review on which type of CBCT-based DICOM images have been used for the evaluation of the fate of bone grafts in humans and (2) use a software suggested in the literature to test DICOM-based data sets, exemplifying the effect of variation in selected parameters (windowing/contrast control, plane definition, slice thickness, and number of measured slices) on the final image characteristics. The results from review identified three publications that used CBCT to evaluate maxillofacial bone grafts in humans, and in which the methodology/results comprised at least one of the expected outcomes (image acquisition protocol, image reconstruction, and image generation information). The experimental shows how the influence of information that was missing in the retrieved papers, can influence the reproducibility and the validity of image measurements. Although the use of CBCT-based images for the evaluation of bone grafts in humans has become more common, this does not reflect on a better standardization of the developed studies. Parameters regarding image acquisition and reconstruction, while important, are not addressed in the proper way in the literature, compromising the reproducibility and scientific impact of the studies.

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Section: Introductionmentioning

confidence: 99%

Exploring CBCT-Based DICOM Files. A Systematic Review on the Properties of Images Used to Evaluate Maxillofacial Bone Grafts

et al. 2011

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“…One explanation might be that cancellous bone in the autogenous bone graft could not withstand sinus pressures for long periods of time, and as such, start to lose their density and height during the first several weeks (Jensen et al, 1998). Some publicshed clinical data showed that the absorption rate using autogenous bone in sinus augmentation was 47% 6-7 months after surgery (Johansson et al, 2001). In fact, the resorption of autogenous bone graft has not only been reported in a sinus lifting model but has also been described in studies that explored ridge augmentation and bone defect's restoration (Roccuzzo et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Sequential Fluorescent Labeling Observation of Maxillary Sinus Augmentation by a Tissue‐engineered Bone Complex in Canine Model

et al. 2009

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“…Autogenous bone has high capability to regenerate bone compared to the other bone graft materials. Note, however, that graft by a combination of allogenous bone and autogenous bone, synthetic bone, and xenogenous bone revealed that autogenous bone had faster and greater resorption compared to other bone graft materials 5) . Various factors as well as the bone graft material type can be said to have an influence on the resorption rate of graft material.…”

Section: Discussionmentioning

confidence: 99%

“…In particular, Hatano et al 4) cited the possibility of pneumatization for the first 2~3 years after bone grafting. In their study using computed tomography (CT), Johansson et al 5) stated that maxillary sinus bone graft using autogenous bone harvested from iliac bone led to the resorption of 49.5% of graft material 6 or 7 months after the surgery. On the other hand, Smolka et al 6) re ported that maxillary sinus elevation using skull vault in auto ge nous bone recorded an average of 19.2% resorption as a result of measuring grafted bone volume using three-dimen sional CT. Autogenous bone including hard bone, ribs, or iliac bone can be used.…”

Section: Introductionmentioning

confidence: 99%

Retrospective Study of Bone Resorption after Maxillary Sinus Bone Graft

Moon¹,

Cho²,

Jung³

et al. 2011

Journal of Korean Dental Science

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, Hee-Kyun Oh 2 ·Abstract Purpose: This research sought to determine the resorption rate of bone grafted to the maxillary sinus according to the grafted material's type, patient's age, systemic disease, implant size, site of implant placement, and residual ridge height. Materials and Methods: This research targeted 24 patients who had immediate Osstem ® implant (US Plus ® ) placement after bone graft. The panorama was taken before the surgery, after the surgery, and 6 months after the surgery. Vertical height change and resorption rate of the grafted bone were measured with the same X-rays and compared. The influence of the following factors on the grafted bone material's resorption rate was evaluated: grafted material type, patient's age, systemic disease, implant size, site of implant placement, and residual ridge height. Results: Patients in their 40s had 34.0±21.1% resorption rate, which was significantly higher compared to the other age groups (P<0.05). There was no significant relationship between systemic disease and grafted bone resorption. There was no significant relationship between implant size (diameter, length) and grafted bone resorption. There was no significant relationship between the site of implant placement and grafted bone resorption. The ramal bone-grafted site was significantly more resorbed than the ramal bone/Bio-Oss ® -grafted site, maxillary tuberosity bone/Bio-Oss ® -grafted site, and ramal bone/maxillary tuberosity bone/Bio-Oss ® -grafted site (P<0.05). There was no significant difference in the grafted bone resorption rate in the sinus between more than 4 mm and less than 4 mm residual ridge heights. After an average of 6 months, a second surgery was done; given an average follow-up of 1.9 years, the success rate and survival rate of the implant were 96.9% and 98.4%, respectively. Conclusion: These results indicate that the bone resorption rate of grafted bone among patients in their 40s is higher compared to patients in their 50s and over, and that only autogenous bone (ramus) shows higher resorption rate than the mixed graft of autogenous bone and xenogenous graft (Bio-oss) after maxillary sinus graft.

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A clinical study of changes in the volume of bone grafts in the atrophic maxilla

Cited by 202 publications

References 0 publications

Exploring CBCT-Based DICOM Files. A Systematic Review on the Properties of Images Used to Evaluate Maxillofacial Bone Grafts

Exploring CBCT-Based DICOM Files. A Systematic Review on the Properties of Images Used to Evaluate Maxillofacial Bone Grafts

Sequential Fluorescent Labeling Observation of Maxillary Sinus Augmentation by a Tissue‐engineered Bone Complex in Canine Model

Retrospective Study of Bone Resorption after Maxillary Sinus Bone Graft

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