Comparison of Dense Versus Porous Hydroxylapatite (HA) Particles for Rat Mandibular Defect Repair

1987 ◽  
Vol 110 ◽  
Author(s):  
Stephen A. Fredette ◽  
Jacob S. Hanker ◽  
Bill C. Terry ◽  
Beverly L. Giammara
Keyword(s):  
Soft Tissue ◽  
Bone Formation ◽  
Cancellous Bone ◽  
New Bone Formation ◽  
Mandibular Ramus ◽  
X Ray ◽  
Fibrovascular Tissue ◽  
Defect Repair ◽  
Mandibular Defect

AbstractRepair was compared in 4.4mm experimental rat mandibular ramus defects implanted with dense or porous HA particles with or without a plaster binder. Animals were sacrificed 6 months postimplantation. Specimens underwent gross, radiographic, histochemical and X-ray microanalytical examination. Gross and radiographic examinations showed good particle containment or retention only in defects filled with implants containing plaster. Only porous HA/plaster filled defects showed bone formation throughout the implant when examined histochemically by the PATS reaction and by X-ray microanalysis. They also showed greater radiographic opacity compared to dense HA/plaster implants. Only porous HA/plaster implants showed macroscopic bone formation. Examination of defects filled with porous HA/plaster or porous HA alone by the PATS reaction showed new cancellous bone around, and through the pores of, retained particles. The dense HA/plaster implants showed some new bone around the rims of the defects with only occasional bony incorporation of an HA particle. Dense particles in other areas showed only soft tissue encapsulation. Defects implanted with dense HA without plaster showed no new bone formation but retained particles were incorporated by fibrovascular tissue.

scholarly journals The use of solvent-preserved human and bovine cancellous bone blocks for lateral defect augmentation - an experimental controlled study in vivo

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Lara Schorn ◽  
Tim Fienitz ◽  
Kathrin Berndsen ◽  
Norbert R. Kübler ◽  
Henrik Holtmann ◽  
...  
Keyword(s):  
Bone Formation ◽  
Cancellous Bone ◽  
Bone Substitute ◽  
Bone Matrix ◽  
Human Bone ◽  
Controlled Study ◽  
Bovine Bone ◽  
New Bone Formation ◽  
Bone Substitute Material ◽  
Substitute Material

Abstract Background The aim of this study was to compare new bone formation, resorbed bone matrix, and fibrous enclosed residual bone substitute material in laterally augmented alveolar bone defects using allogeneic, pre-treated and cleaned human bone blocks (tested in dogs, therefore considered to be xenogeneic), and pre-treated and cleaned bovine cancellous bone blocks, both with and without a collagen membrane in order to evaluate their augmentative potential. Methods Thirty-two critical size horizontal defects were prepared in the mandible of 4 adult foxhound dogs (8 per dog, 4 on each side). After 3 months of healing, the defects were laterally augmented in a split-mouth-design with either human (HXB) or bovine solvent-preserved bone blocks (BXB). Afterwards, defects were randomly covered with a bovine collagenous membrane (HXB + M, BXB + M). After a healing interval of 6 months, percentages of new bone formation, resorbed bone matrix, and fibrous enclosed residual bone substitute material were compared. Results Results showed little new bone formation of up to 3.7 % in human bone blocks (HXB 3.7 % ± 10.2, HXB + M 0.3 %± 0.4, BXB, 0.1 % ± 0.8, BXB + M 2.6 % ± 3.2, p = > 0.05). Percentages of fibrous encapsulation were higher in human bone blocks than in bovine bone blocks (HXB 71.2 % ± 8.6, HXB + M 73.71 % ± 10.6, BXB, 60.5 % ± 27.4, BXB + M 52.5 % ± 28.4, p = > 0.05). Resorption rates differed from 44.8 % in bovine bone blocks covered with a membrane to 17.4 % in human bone blocks (HXB 17.4 % ± 7.4, HXB + M 25.9 % ± 10.7, BXB, 38.4 % ± 27.2, BXB + M 44.8 % ± 29.6, p = > 0.05). The use of additional membranes did not significantly affect results. Conclusions Within its limitations, results of this study suggest that solvent-preserved xenogenic human and bovine bone blocks are not suitable for lateral bone augmentation in dogs. Furthermore, defect coverage with a membrane does not positively affect the outcome.

scholarly journals BMSCs Seeding in Different Scaffold Incorporation with Hyperbaric Oxygen Treat Seawater Immersed Bony Defect

2021 ◽  
Author(s):  
gan zhang ◽  
Xiaosong Chen ◽  
Xunsheng Cheng ◽  
Xiuwu Ma ◽  
Congcong Chen
Keyword(s):  
Bone Formation ◽  
Bone Defect ◽  
Medullary Canal ◽  
Bony Defect ◽  
New Bone Formation ◽  
X Ray ◽  
New Zealand White Rabbits ◽  
Group A ◽  
Group B ◽  
Group D

Abstract Introduction: The experiment was undertaken to estimate the effect of BMSCs seeding in different scaffold incorporation with HBO on the repair of seawater immersed bone defect. And future compared n-HA/PLGA with β-TCP/PLGA as scaffold in treatment effect of seawater immersed bone defect.Methods: 60 New Zealand White rabbits with standard seawater defect in radius were randomly divided to group A (implant with nothing), group B (implanted with atuogenous bone), group C (implanted with n-HA/PLGA/BMSCs, and Group D ( implanted with β-TCP/PLGA/BMSCs). After implant, each rabbit receive HBO treatment at 2.4 ATA 100% oxygen for 120 minutes per day for 2 weeeks. Radiograph, histological and biomechanical examination were used to analyze osteogenesis.Result: X-ray analysis show that n-HA/PLGA/BMSCs and β-TCP/PLGA/BMSCs could accelerate the new bone formation, and the new bone formation in group C was lager than in group D or group A, and close to group B (P<0.05). After 12 weeks, in group A, defect without scaffold show a loose connect tissue filled in the areas. The medullary canal in group B was recanalizated. Defect in group C and D show a larger number of wove bone formation. The new wove bone formation in defect areas in group C was lager than D. The mechanical examination revealed ultimate strength at 12 weeks were group D>group C>group B>group A(P<0.05).Conclusion: Scaffold of n-HA/PLGA and β-TCP/PLGA incorporation with HBO and BMSCs were effective to treat seawater immersed bone defect, and n-HA/PLGA was more excellent than β-TCP/PLGA.

scholarly journals Effectiveness of Platelet-Rich Fibrin as an Adjunctive Material to Bone Graft in Maxillary Sinus Augmentation: A Meta-Analysis of Randomized Controlled Trails

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Ruimin Liu ◽  
Mingdong Yan ◽  
Sulin Chen ◽  
Wenxiu Huang ◽  
Dong Wu ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Bone Formation ◽  
Bone Graft ◽  
Bone Substitute ◽  
Meta Analysis ◽  
New Bone Formation ◽  
Sinus Augmentation ◽  
Platelet Rich Fibrin ◽  
Randomized Controlled ◽  
Tissue Area

Purpose. To date, it remains unknown whether the addition of platelet-rich fibrin (PRF) to bone grafts actually improves the effectiveness of maxillary sinus augmentation. This study aimed to perform a meta-analysis to evaluate the efficacy of PRF in sinus lift.Materials and Methods. PubMed, Embase, and the Cochrane Library were searched. Randomized controlled studies were identified. The risk of bias was evaluated using the Cochrane Collaboration tool.Results. Five RCTs were included in our meta-analysis. Clinical, radiographic, and histomorphometric outcomes were considered. No implant failure or graft failure was detected in all included studies within the follow-up period. The percentage of contact length between newly formed bone substitute and bone in the PRF group was lower but lacked statistical significance (3.90%, 95% CI, -2.91% to 10.71%). The percentages of new bone formation (-1.59%, 95% CI, -5.36% to 2.18%) and soft-tissue area (-3.73%, 95% CI, -10.11% to 2.66%) were higher in the PRF group but were not significantly different. The percentage of residual bone graft was not significant in either group (4.57%, 95% CI, 0% to 9.14%).Conclusions. Within the limitations of this review, it was concluded that there were no statistical differences in survival rate, new bone formation, contact between newly formed bone and bone substitute, percentage of residual bone graft (BSV/TV), and soft-tissue area between the non-PRF and PRF groups. Current evidence supporting the necessity of adding PRF to bone graft in sinus augmentation is limited.

scholarly journals  Hypertrophic osteopathy in a dog associated with intra-thoracic lesions: a case report and a review

2011 ◽  
Vol 56 (No. 12) ◽  
pp. 595-601 ◽  
Author(s):  
MA Cetinkaya ◽  
B. Yardimci ◽  
C. Yardimci
Keyword(s):  
Case Report ◽  
Soft Tissue ◽  
Bone Formation ◽  
Disease Process ◽  
Radical Mastectomy ◽  
New Bone Formation ◽  
Cross Sectional ◽  
Hind Limbs ◽  
Metatarsal Bones ◽  
Periosteal New Bone Formation

This paper reviews hypertrophic osteopathy and describes one case report. Hypertrophic osteopathy is a rare pathologic disease process and is observed secondary to a mass in the thorax. In response to the presence of a mass(es), nonoedematous soft tissue swellings and a diffuse periosteal new bone formation develop in all four limbs. The result is mild to severe lameness. A twelve-year-old sexually intact female Cocker spaniel had undergone radical mastectomy on both sides in another veterinary hospital about two years before presentation in our hospital with lameness of both hind limbs. Pain and soft tissue swelling on the distal parts of extremities were determined in clinical examinations. Radiographs revealed periosteal new bone formation on all the long bones of all four limbs, pelvis and sternum; additionally, intrathoracic masses were observed. Euthanasia was performed five months later. Macroscopic examinations of the lungs revealed diffuse and exuberant masses with grizzled whitish cross-sectional colour and with necrotic and haemorrhagic foci. The radius-ulna, tibia, metacarpal and metatarsal bones of both limbs were examined and collected after the necropsy examination. Bone specimens were thicker and the outer surfaces seemed to be rough. At the histopathologic examination of the lung tissue, ovoid or round shaped and hyperchromatic nucleated diffuse anaplastic mammary gland epithelial cells were observed. According to these findings, these masses were diagnosed as the metastasis of malignant mixed tumours. &nbsp;

Post-operative roentgenological findings and changes after mastoid obliteration

1983 ◽  
Vol 97 (5) ◽  
pp. 393-398 ◽  
Author(s):  
Kauko Ojala ◽  
Reijo Lahti ◽  
Antti Palva ◽  
Martti Sorri
Keyword(s):  
Bone Formation ◽  
Frequent Occurrence ◽  
New Bone Formation ◽  
Mastoid Obliteration ◽  
X Ray ◽  
Radiological Features ◽  
Operative Complications ◽  
Post Operative Complications

AbstractThis study consisted of the evaluation of the plain X-ray findings of films taken at early follow-up (mean 1.5 months after surgery) and at late follow-up(4–14 years after the early films) of 211 ears which had been operated on radically and obliterated. Residual cells which were detected on the basis of the early films were associated with a more frequent occurrence of post-operative infection and were thus hallmarks of a poorer prognosis. Changes in the bone surrounding the surgical cavity and the radiological quality of the walls of the surgical cavity, the presence of new bone formation in the cavity and other radiological features did not yield useful information about post-operative complications. New bone formation was associated with a smaller amount of post-operative cavitation. Post-operative X-ray examination of the obliterated ear is a prognostically useful examination, but it does not significantly contribute further to the information available by clinical and otomicroscopic examination in regards to the complications of infection and cholesteatoma.

Age-related new bone formation following the use of cancellous bone-block allografts for reconstruction of atrophic alveolar ridges

2017 ◽  
Vol 20 (1) ◽  
pp. 4-8 ◽  
Author(s):  
Joseph Nissan ◽  
Roni Kolerman ◽  
Liat Chaushu ◽  
Marilena Vered ◽  
Sarit Naishlos ◽  
...  
Keyword(s):  
Bone Formation ◽  
Cancellous Bone ◽  
Bone Block ◽  
New Bone Formation ◽  
Age Related

Soft-tissue haemangioma and periosteal new bone formation on the neighbouring bone

2001 ◽  
Vol 121 (10) ◽  
pp. 549-553 ◽  
Author(s):  
T. Goto ◽  
T. Kojima ◽  
T. Iijima ◽  
S. Yokokura ◽  
H. Kawano ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Bone Formation ◽  
New Bone Formation ◽  
Periosteal New Bone Formation

scholarly journals SAT0562 ADDITIONAL BENEFIT OF ULTRASOUND TO THE EARLY DIAGNOSIS OF PSORIATIC ARTHRITIS

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1239.2-1239
Author(s):  
Y. Geng ◽  
A. Cope ◽  
S. Subesinghe ◽  
J. Galloway ◽  
Z. Zhang ◽  
...  
Keyword(s):  
Psoriatic Arthritis ◽  
Bone Formation ◽  
Physical Examination ◽  
Disease Duration ◽  
Life Quality ◽  
Joint Inflammation ◽  
New Bone Formation ◽  
Cross Sectional ◽  
X Ray ◽  
Nail Change

Background:Being an inflammatory disease of joint, spine or enthesis is the premise of the CASPAR diagnostic criteria for psoriatic arthritis (PsA). Traditionally, the assessment of local inflammation in joint, enthesis and tendon relies on physical examinations. But multiple studies have demonstrated that ultrasound (US) is capable of detecting subclinical inflammation as well as non-inflammatory lesions.Objectives:To compare the capabilities of physical examination and US findings in the diagnosis of early PsA, and further identify the US features which are most valuable for the diagnosis of PsA.Methods:66 patients with suspected PsA or early PsA (disease duration< 2 years) due to psoriasis with joint pain or seronegative inflammatory arthritis were enrolled and further assessed by both physical examination and ultrasound (US).Tender and swollen joint counts based on 68/66 joints, tender tendons, enthesitis (14 entheses) and dactylitis (20 digits) count were collected by physical examination. Abnormalities of peripheral joints, entheses and tendons were also evaluated by US. New bone formation was evaluated by hand X-ray. The diagnostic capacity of CASPAR criteria based on US and based on physical examination were compared. The diagnosis value of US features as well as clinical characteristics were analyzed. The clinical diagnosis of PsA by the expert panel was taken as the standard.Results:CASPAR criteria based on US showed a higher specificity than those based on physical examination (96.7% vs. 53.3%) with a bit decrease of sensitivity (91.7% vs. 97.2%). 36 patients were eventually diagnosed as PsA and 30 patients were non-PsA. Gender distribution, mean age and disease duration were equally distributed in two groups of patients. Dermatology Life Quality Index (DLQI) was higher in PsA patients than non-PsA patients. Significantly more patients had nail change and new bone formation on hand X-ray in PsA patients than in non-PsA patients (69.4% vs. 26.7%,P=0.001 and 66.7% vs. 13.3%,P<0.001 respectively). Significantly higher frequencies of synovitis/synovium hypertrophy, tenosynovitis and enthesitis were found in PsA patients than non-PsA patients (58.3% vs 20.0%,P=0.002, 38.9% vs 3.3%,P=0.001 and 52.8% vs 13.3%,P=0.002, respectively). Logistic regression analysis showed that nail change (OR=25.1, P=0.007), new bone formation on X-ray (OR=33.1, P=0.003), tenosynovitis on US (OR=149.1, P=0.003) and enthesitis on US (OR=39.2, P=0.008) were independent risk factors for predicting the diagnosis of PsA.Conclusion:US increased the specificity of CASPAR criteria compared with physical examination. Combined nail change, new bone formation on X-ray, tenosynovitis and enthesitis on US improved the diagnosis of early PsA.References:[1]Polachek A, Cook R, Chandran V, et al. The association between sonographic enthesitis and radiographic damage in psoriatic arthritis. Arthritis Res Ther 2017; 19(1): 189.[2]Faustini F, Simon D, Oliveira I, et al. Subclinical joint inflammation in patients with psoriasis without concomitant psoriatic arthritis: a cross-sectional and longitudinal analysis. Ann Rheum Dis 2016; 75(12): 2068-74.Acknowledgments:The author thank all the colleagues in the department of Rheumatology of Guy’s hospital.Disclosure of Interests:None declared

scholarly journals BMSCs Seeding in Different Scaffold Incorporation with Hyperbaric Oxygen Treat Seawater Immersed Bony Defect

2020 ◽  
Author(s):  
gan zhang ◽  
Xiaosong Chen ◽  
Xunsheng Cheng ◽  
Xiuwu Ma ◽  
Congcong Chen
Keyword(s):  
Bone Formation ◽  
Bone Defect ◽  
Medullary Canal ◽  
Bony Defect ◽  
New Bone Formation ◽  
X Ray ◽  
New Zealand White Rabbits ◽  
Group A ◽  
Group B ◽  
Group D

Abstract Introduction: The experiment was undertaken to estimate the effect of BMSCs seeding in different scaffold incorporation with HBO on the repair of seawater immersed bone defect. And future compared n-HA/PLGA with β-TCP/PLGA as scaffold in treatment effect of seawater immersed bone defect.Methods: 60 New Zealand White rabbits with standard seawater defect in radius were randomly divided to group A (implant with nothing), group B (implanted with atuogenous bone), group C (implanted with n-HA/PLGA/BMSCs, and Group D ( implanted with β-TCP/PLGA/BMSCs). After implant, each rabbit receive HBO treatment at 2.4 ATA 100% oxygen for 120 minutes per day for 2 weeeks. Radiograph, histological and biomechanical examination were used to analyze osteogenesis.Result: X-ray analysis show that n-HA/PLGA/BMSCs and β-TCP/PLGA/BMSCs could accelerate the new bone formation, and the new bone formation in group C was lager than in group D or group A, and close to group B (P<0.05). After 12 weeks, in group A, defect without scaffold show a loose connect tissue filled in the areas. The medullary canal in group B was recanalizated. Defect in group C and D show a larger number of wove bone formation. The new wove bone formation in defect areas in group C was lager than D. The mechanical examination revealed ultimate strength at 12 weeks were group D>group C>group B>group A(P<0.05).Conclusion: Scaffold of n-HA/PLGA and β-TCP/PLGA incorporation with HBO and BMSCs were effective to treat seawater immersed bone defect, and n-HA/PLGA was more excellent than β-TCP/PLGA.

scholarly journals AB0497 IMPACT OF COXITIS ON THE BONE MINERAL DENSITY OF THE HIP IN ANKYLOSING SPONDYLITIS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 1276.1-1276
Author(s):  
A. Feki ◽  
I. Sellami ◽  
R. Akrout ◽  
S. Ben Jemaa ◽  
Z. Gassara ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Ankylosing Spondylitis ◽  
Bone Density ◽  
Bone Formation ◽  
New Bone Formation ◽  
Mineral Density ◽  
X Ray ◽  
T Score ◽  
Femoral Site ◽  
The Mean

Background:Ankylosing spondylitis (AS) is an inflammatory disease, with new bone formation and ossification of the ligamentous apparatus as the primary pathological changes. The osteoporosis is coexisting with new bone formation. It is well known a common complication of this chronic disease. Hip involvement is common in AS [1].Objectives:The objective of this work is to assess the impact of chronic inflammation of the hip (coxitis) on the bone density at this site.Methods:This is a cross-sectional study of patients who fulfil the modified New York criteria for AS. These patients had not medical history of osteoporosis or other condition that may affect bone metabolism. Hip involvement was appreciated by physical examination and pelvic x-ray. The functional hip gene was assessed by Lequesne Algofunctional Index (LFI). Bone mineral density at the femoral site was measured using Lunar Prodigy dual-energy X-ray absorptiometry. Osteoporosis is defined when T score is ≤ -2.5 DS (standards deviations). Osteopenia is defined when T score is ≤ -1 DS but more than -2.5 DS. A p value <0.05 was considered significant.Results:Forty-seven AS patients were collected, 12 women and 35 men with a mean age of 43.8 ± 13.4 years. Smoking was noted in 25% of cases. AS clinical form was axial in 33 cases (70.2%) and mixed (axial and peripheral) in 14 cases (29.8%). The mean duration of AS was 15 ± 10.9 years. Nineteen patients (40.4%) were on DMARD at the time of the study. Coxitis was present in 31 patients (66%). It was bilateral in 13 cases (42.5%). The mean of the LFI was 7.1 ± 6.5 with extremes of 0 to 18. Coxitis form was early in 18 cases (40.9%), synostosis in 15 cases (34.1%) and destructive in 11 cases (25%). Twenty-nine patients (61.7%) had normal femoral bone densitometry, 13 patients (27.7%) had osteopenia and 4 patients (8.5%) had osteoporosis. The mean T-score value at femoral neck site was -0.5 SD ± 1.303 [-3– -2]. Patients with coxitis had a significantly lower T score at the femoral site compared to those without coxitis (-0.77 ± 1.31 DS versus 0.07 ± 1.11 DS respectively with p = 0.036).Conclusion:Our study confirms the role of chronic inflammation in the genesis of bone loss in AS. Given the risks of developing secondary complications as a result of low bone density, early management of AS should be recommended in order to control the inflammatory process and prevent the onset of osteoporosis.References:[1]Toussirot E, Wendling D. Bone mass in ankylosing spondylitis. Clin Exp Rheumatol 2000:16–20.Disclosure of Interests:None declared.

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