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1.
J Coll Physicians Surg Pak ; 31(10): 1239-1241, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34601851

RESUMO

Langerhans cell histiocytosis (LCH) is a rare haematological disorder characterised by accumulation and abnormal proliferation of bone marrow-derived Langerhans cells and mature eosinophils. The clinical presentation of patients with LCH may be localised or systemic, depending on the site and the degree of involvement. LCH may involve any bone, but the most commonly involved bones are long bones, pelvis, ribs, skull, vertebrae, and facial bones. In head and neck region, frontal and parietal bones are commonly involved followed by the jaws, with a predilection for mandible. In this report, we present a case of LCH involving the craniofacial bones in a 10-year boy, who presented initially with multiple ulcerative lesions on gingiva. Key Words: Craniofacial, Langerhans cell histiocytosis, Gingiva.


Assuntos
Histiocitose de Células de Langerhans , Crânio , Histiocitose de Células de Langerhans/diagnóstico por imagem , Humanos , Masculino , Mandíbula , Costelas , Crânio/diagnóstico por imagem , Coluna Vertebral
2.
Gen Thorac Cardiovasc Surg ; 69(11): 1502-1505, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34535855

RESUMO

A 66-year-old-man who had undergone partial aortic arch and descending aortic graft replacement for a dissecting aortic aneurysm presented to our hospital with pain and beating swelling of his left back shoulder. Enhanced computed tomography and aortic angiography revealed graft rupture caused by one of the claws of a rib fixation strut. Furthermore, another claw had invaded a lung. We performed emergency thoracic endovascular aortic repair, and removed all of the struts 3 weeks later. Claw-type rib fixation struts have the potential to injure other organs, including prosthetic grafts. Careful follow-up is mandatory after implantation of this type of strut.


Assuntos
Costelas , Idoso , Humanos
3.
Kyobu Geka ; 74(10): 867-872, 2021 Sep.
Artigo em Japonês | MEDLINE | ID: mdl-34548461

RESUMO

Two types of re-operations for inflammatory lung diseases are presented:thoracoplasty and cavernostomy. Thoracoplasty is used to obliterate a residual pleural space after upper lung resection with prolonged air leak. Usually, the 2nd to the 6th ribs are resected, according to the extent of the space. Posteriorly the ribs should be removed to the costotransverse joint to achieve sufficient space obliteration. The tip of the scapula is resected in case of the resection of the 6th rib, otherwise the scapula would impinge on the 7th rib. The resection of the 1st rib should be avoided because of a subsequent severe scoliosis. Cavernostomy is a procedure to open the infected cavity of the residual lung. Aspergillus and non-tuberculous mycobacteria are the most frequent pathogens. The site of skin incision depends on the location of the cavity:midaxially incision for an anterior cavity and paravertebral incision for a posterior cavity. Cutting "septum" in the cavity makes it a single space, contributing to sufficient drainage by gauze. The closure of the cavity will be considered after several months or years when the cavity is sterilized and the patient's nutritional status becomes well. These 2 procedures are effective in treating refractory lung inflammation after lung resection, although they are quite traditional.


Assuntos
Pneumopatias , Toracoplastia , Humanos , Pulmão , Reoperação , Costelas
4.
BMC Infect Dis ; 21(1): 745, 2021 Aug 03.
Artigo em Inglês | MEDLINE | ID: mdl-34344324

RESUMO

BACKGROUND: Empyema necessitans is a rare pulmonary condition described as the presence of pus in the pleural cavity with insidious extension into the surrounding soft tissue. The common microbial aetiology of empyema necessitans is tuberculosis. Nocardiosis a cause of empyema necessitans is rarely described in the literature. We herein present a case of an 80-year-old male with empyema necessitans with osteomyelitis of rib caused by Nocardia farcinica. CASE PRESENTATION: An 80-year-old male presented with complaints of soft swelling on the left lower posterior chest wall associated with dry cough and breathlessness on exertion. Computed Tomography (CT) thorax demonstrated empyema necessitans with features of left fifth rib osteomyelitis. Radiological guided aspiration of the chest wall collection revealed Nocardia species and surgical drainage of abscess was performed. Matrix-assisted laser desorption/ionization time-of-flight-mass spectrometry (MALDI-TOF-MS) identified the isolate as Nocardia farcinica. He was treated with three-drug regimen: Trimethoprim-sulfamethoxazole, amikacin and ceftriaxone for 2 weeks. After showing improvement patient was discharged and advised to take oral Trimethoprim-sulfamethoxazole for the next 6 months with periodic follow-up. CONCLUSIONS: As our case demonstrates, the possibility of invasive Nocardiosis should not be overlooked even in immunocompetent patients. Clinicians should aware of this rare entity while treating patients with empyema necessitans.


Assuntos
Empiema , Nocardiose , Nocardia , Osteomielite , Idoso de 80 Anos ou mais , Humanos , Masculino , Nocardiose/complicações , Nocardiose/diagnóstico , Nocardiose/tratamento farmacológico , Osteomielite/tratamento farmacológico , Costelas
5.
J Med Case Rep ; 15(1): 427, 2021 Aug 17.
Artigo em Inglês | MEDLINE | ID: mdl-34399846

RESUMO

INTRODUCTION: Gorham's disease is a very rare musculoskeletal disorder characterized by progressive resorption of one or more skeletal bones. Most of the 200 cases reported earlier are diagnosed before the age of 40 years. Due to rarity, the diagnosis of Gorham's disease in the Emergency Department may be very difficult. CASE PRESENTATION: We report a case of Gorham's disease. A 23-year old Caucasian man presented to the Emergency Department with a significant loss of power and sensation of the lower limbs and lower torso. Clinical examination, computed tomography, and magnetic resonance imaging revealed resorption of the ribs and vertebrae, severe kyphosis, and spinal stenosis in the thoracic area. The patient underwent several surgical procedures, including spondylodesis and decompression, and made a good initial recovery. Biopsy confirmed the diagnosis of Gorham's disease. CONCLUSION: We present a young man with Gorham's disease visiting the Emergency Department. After the proper diagnosis and treatment, our patient had good outcome, although the etiology of this rare disease is uncertain.


Assuntos
Osteólise Essencial , Adulto , Serviço Hospitalar de Emergência , Humanos , Imageamento por Ressonância Magnética , Masculino , Osteólise Essencial/diagnóstico por imagem , Osteólise Essencial/cirurgia , Costelas , Tomografia Computadorizada por Raios X , Adulto Jovem
6.
Med Phys ; 48(9): 5540-5548, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34245007

RESUMO

PURPOSE: The aim of this paper is to propose a fracture model for human ribs based on acoustic emission (AE) data. The accumulation of microcracking until a macroscopic crack is produced can be monitored by AE. The macrocrack propagation causes the loss of the structural integrity of the rib. METHODS: The AE technique was used in in vitro bending tests of human ribs. The AE data obtained were used to construct a quantitative model that allows an estimation of the failure stress from the signals detected. The model predicts the ultimate stress with an error of less than 3.5% (even at stresses 15% lower than failure stress), which makes it possible to safely anticipate the failure of the rib. RESULTS: The percolation theory was used to model crack propagation. Moreover, a quantitative probability-based model for the expected number of AE signals has been constructed, incorporating some ideas of percolation theory. The model predicts that AE signals associated with micro-failures should exhibit a vertical asymptote when stress increases. The occurrence of this vertical asymptote was attested in our experimental observations. The total number of microfailures detected prior to the failure is N ≈ 100 and the ultimate stress is σ ∞ = 197 ± 62 MPa. A significant correlation (p < 0.0001) between σ ∞ and the predicted value is found, using only the first N = 30 micro-failures (correlation improves for N higher). CONCLUSIONS: The measurements and the shape of the curves predicted by the model fit well. In addition, the model parameters seem to explain quantitatively and qualitatively the distribution of the AE signals as the material approaches the macroscopic fracture. Moreover, some of these parameters correlate with anthropometric variables, such as age or Body Mass Index. The proposed model could be used to predict the structural failure of ribs subjected to bending.


Assuntos
Fraturas Ósseas , Costelas , Acústica , Humanos , Técnicas In Vitro , Costelas/diagnóstico por imagem
7.
J Pediatr Orthop ; 41(9): 531-536, 2021 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-34325442

RESUMO

BACKGROUND: Congenital myopathies (CMs) are complex conditions often associated with early-onset scoliosis (EOS). The purpose of this study was to investigate radiographic outcomes in CM patients undergoing EOS instrumentation as well as complications. Secondarily, we sought to compare these patients to a population with higher prevalence, cerebral palsy (CP) EOS patients. METHODS: This is a retrospective study of a prospectively collected multicenter registry. The registry was queried for EOS patients with growth-sparing instrumentation (vertical expandable prosthetic titanium ribs, magnetically controlled growing rods, traditional growing rod, or Shilla) and a CM or CP diagnosis with minimum 2 years follow-up. Outcomes included major curve magnitude, T1-S1 height, kyphosis, and complications. RESULTS: Sixteen patients with CM were included. Six (37.5%) children with CM experienced 11 complications by 2 years. Mean major curve magnitude for CM patients was improved postoperatively and maintained at 2 years (P<0.01), with no significant increase in T1-S1 height or maximum kyphosis(P>0.05). Ninety-seven patients with CP EOS were included as a comparative cohort. Fewer CP patients required baseline respiratory support compared with CM patients (20.0% vs. 92.9%, P<0.01). Fifty-four (55.7%) CP patients experienced a total of 105 complications at 2 years. There was no evidence that the risk of complication or radiographic outcomes differs between cohorts at 2 years, though CP EOS patients experienced significant improvement in all measurements at 2 years. CONCLUSIONS: EOS CM children face a high risk of complication after growing instrumentation, with similar curve correction and risk of complication to CP patients. LEVEL OF EVIDENCE: Level III.


Assuntos
Cifose , Doenças Musculares , Escoliose , Criança , Seguimentos , Humanos , Estudos Retrospectivos , Costelas , Escoliose/diagnóstico por imagem , Escoliose/epidemiologia , Escoliose/cirurgia , Coluna Vertebral , Resultado do Tratamento
9.
J Mech Behav Biomed Mater ; 122: 104668, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34265671

RESUMO

The objectives of this study were to develop novel methods for quantifying human rib cortical bone material properties in compression and to compare the compressive material property data to existing tensile data for matched subjects. Cylindrical coupons were obtained from the rib cortical bone of 30 subjects (M = 19, F = 11) ranging from 18 to 95 years of age (Avg. = 48.5 ± 24.3). Two coupons were obtained from each subject. One coupon was tested in compression at 0.005 strain/s, while the other coupon was tested in compression at 0.5 strain/s. Load and displacement data were recorded so that the elastic modulus, yield stress, yield strain, ultimate stress, ultimate strain, elastic strain energy density (SED), plastic SED, and total SED could be calculated. All compressive material properties were significantly different between the two loading rates. An ANOVA revealed that sex alone had no significant effect on the compressive material properties. The interaction between sex and age was significant for some material properties, but this may have been a consequence of the lack of older females in the subject pool. None of the compressive material properties were significantly correlated with age, but were more correlated with sample density. This finding differed for the tensile material properties, which showed stronger correlations with age. When comparing between tension and compression, significant differences were observed for all material properties except for the total SED, once the effects of loading rate and age had been accounted for. This was the first study to quantify the material properties of human rib cortical bone in compression. The results of this study demonstrated that rib and thorax finite element models should consider the effects of loading rate, loading mode, and age when incorporating material properties published in the literature.


Assuntos
Osso Cortical , Costelas , Força Compressiva , Módulo de Elasticidade , Feminino , Humanos , Estresse Mecânico , Tórax
10.
J Cardiothorac Surg ; 16(1): 196, 2021 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-34243804

RESUMO

INTRODUCTION: Regardless of its rarity, and indolent clinical course, chest wall tumor places high morbidity and burden on patients especially when invasion to a neighboring structure is found. Once detected, surgery is the cornerstone for treatment of such etiology combined with chemo-radiotherapy. In order to maintain intact respiratory function, chest wall reconstruction must be performed whenever resection is done. Herein, we present a case of chest wall tumor that necessitated three ribs and part of hemidiaphragm resection and reconstruction with optimal post-operative results. CASE PRESENTATION: A 27-year-old male patient who had chest wall and diaphragm reconstruction for a chest wall Ewing sarcoma, using a single patch of expanded polytetrafluoroethylene (ePTFE) mesh with diaphragm implanted into the middle of the mesh. There were no immediate nor post-operative complications. The patient received post-operative radiotherapy with good functional and cosmetic results. CONCLUSION: We present a novel and safe technique for combined chest wall and diaphragmatic resection following excision of an invading tumor while ensuring cosmesis and functionality of the ribcage as well as the diaphragm.


Assuntos
Diafragma/cirurgia , Procedimentos Cirúrgicos Reconstrutivos/métodos , Sarcoma de Ewing/cirurgia , Neoplasias Torácicas/cirurgia , Parede Torácica/cirurgia , Adulto , Humanos , Masculino , Politetrafluoretileno , Radioterapia Adjuvante , Costelas/cirurgia , Sarcoma de Ewing/radioterapia , Telas Cirúrgicas , Neoplasias Torácicas/radioterapia
11.
J Cardiothorac Surg ; 16(1): 192, 2021 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-34233697

RESUMO

INTRODUCTION: Chondroblastoma is a rare, benign locally but aggressive bone tumor. It accounts for < 1% of primary bony tumors, and mostly arises from long bones; the rib chondroblastoma is especial rare. Due to its rarity, there are no definitive or standard treatment guidelines. CASE PRESENTATION: A case of a 24-year-old male with a chondroblastoma located on the 6th posterior left rib. Computed tomography (CT) demonstrated a rib tumor that was a well-defined oval lesion of 20 mm × 18 mm, with lytic bone destruction. The imaging first diagnosis was Langerhans cell histiocytosis (LCH), a giant cell tumor, or other type of neoplasm. The whole tumor and a part of partial rib were resected by video-assisted thoracoscopy surgery (VATS). Pathological and immunohistochemical (IHC) examination made a diagnosis of chondroblastoma. Compared with traditional open thoracic surgery, VATS can achieve the same effects and cause less injury to patient. No postoperative adjuvant therapy was given, and had followed up 23 months after surgery, there was no recurrence or metastasis. CONCLUSION: Chondroblastoma has a risk of recurrence and metastasis, surgery plays an important role in the treatment of chondroblastoma, VATS can achieve the same outcome as traditional open thoracic surgery with less pain and lung function. Close follow-up is needed postoperative.


Assuntos
Neoplasias Ósseas/cirurgia , Condroblastoma/cirurgia , Cirurgia Torácica Vídeoassistida , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/patologia , Condroblastoma/diagnóstico por imagem , Condroblastoma/patologia , Humanos , Masculino , Recidiva Local de Neoplasia , Radiografia Torácica , Costelas , Tomografia Computadorizada por Raios X , Adulto Jovem
12.
J Cardiothorac Surg ; 16(1): 187, 2021 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-34215289

RESUMO

BACKGROUND: Open window thoracostomy (OWT) is indicated for patients with bronchopleural fistula (BPF) or trapped lung in the setting of empyema refractory to non-surgical interventions. We investigated the role of OWT in the era of minimally invasive surgeries, endobronchial valves and fibrinolytic therapy. METHODS: A retrospective chart review of all patients who underwent OWT at a single institution from 2010 to 2020 was performed. Indications for the procedure as well as operative details and morbidity and mortality were evaluated to determine patient outcomes for OWT. RESULTS: Eighteen patients were identified for the study. The most common indication for OWT was post-resectional BPF (n = 9). Prior to OWT, n = 11 patients failed other surgical or minimally invasive interventions. Patient comorbidities were quantified with the Charlson Comorbidity index (n = 11 score ≥ 5, 10-year survival ≤21%). Three (16.7%) patients died < 30 days post-operatively and 12 (66%) patients were deceased by the study's end (overall survival 24.0 ± 32.2 months). Mean number of ribs resected were 2.5 ± 1.2 (range 1-6) with one patient having 6 ribs removed. Patients were managed with negative pressure wound therapy (n = 9) or Kerlix packing (n = 9). Eleven patients (61.6%) underwent delayed closure (mean time from index surgery to closure 4.8 ± 6.7 months). CONCLUSIONS: Our study illustrates the significant comorbidities of patients undergoing OWT, the poor outcomes therein, and pitfalls associated with this procedure. We show that negative pressure wound therapy can be utilized as potential way to obliterate the pleural space and manage an open chest in the absence of an airleak; however, OWT procedures continue to be extremely morbid.


Assuntos
Fístula Brônquica/cirurgia , Empiema Pleural/cirurgia , Toracostomia , Adulto , Idoso , Fístula Brônquica/complicações , Comorbidade , Empiema Pleural/complicações , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Minimamente Invasivos , Tratamento de Ferimentos com Pressão Negativa , Pneumonectomia/efeitos adversos , Reoperação , Estudos Retrospectivos , Costelas/cirurgia , Taxa de Sobrevida , Toracostomia/efeitos adversos , Toracostomia/métodos , Toracotomia/efeitos adversos , Terapia Trombolítica , Resultado do Tratamento
13.
Lung Cancer ; 159: 27-33, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34304050

RESUMO

INTRODUCTION: To evaluate the prognosis between patients with non-small cell lung cancer (NSCLC) invading difference depth of chest wall and estimate the impact of rib invasion on the pathological T classifications (pT). METHODS: We retrospectively evaluated 521 patients with resected pT3-4 NSCLC. Propensity-score matching (PSM) balanced the known confounders of the prognosis, resulting in two sets (rib invasion vs the pT3 and pT4 group). Recurrence-free survival (RFS) and Overall survival (OS) was assessed by Cox regression and Kaplan-Meier methods. Time-dependent receiver operating characteristic (ROC) curves were used to assess the additional benefit for survival prediction after reclassifying rib invasion cases. RESULTS: Chest wall invasion occurred in 171 patients (62 rib invasion, 51 parietal pleural invasion [PL3] and 58 soft tissue invasion). Rib invasion was found to be an independent prognostic factor for both RFS (p = 0.006) and OS (p < 0.001) of pT3-4 NSCLC. The survival of rib invasion group was the worst (RFS: 13.1%; OS: 19.8%), followed by PL3 (RFS: 34.2%, P = 0.001; OS: 48.8%; p < 0.001) and the soft tissue invasion group (RFS: 40.6%, p = 0.001; OS: 57.7%, p < 0.001). Besides, the prognosis of rib invasion group was also found to be worse than those of pT3 (RFS: p < 0.001; OS: p < 0.001) and pT4 group (RFS: p = 0.002; OS: p < 0.001). After PSM, the 5-year RFS rate of rib invasion group were still lower than that of pT3 and pT4 group (p < 0.001); the 5-year OS rate of rib invasion was similar with that of pT4 group (p = 0.066) but lower than that of pT3 group (p = 0.014). The time-dependent ROC curves demonstrated that reclassifying rib invasion as pT4 disease provided an additional benefit for survival prediction (p < 0.001). CONCLUSION: The rib invasion group had a worse prognosis than the PL3 and pT3 groups. The prognostic impact of rib invasion should be further validated as a pT4 disease in the TNM classification.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Carcinoma Pulmonar de Células não Pequenas/patologia , Humanos , Neoplasias Pulmonares/patologia , Estadiamento de Neoplasias , Prognóstico , Estudos Retrospectivos , Costelas/patologia
15.
Am J Case Rep ; 22: e931796, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-34059614

RESUMO

BACKGROUND Giant cell tumor of bone (GCTB) is a locally aggressive, intermediate tumor that rarely metastasizes. GCTB typically affects the ends of long bones and rarely involves the ribs. Curettage is typically the treatment of choice for GCTB in long bones. However, the optimal treatment of GCTB in ribs remains unclear. We report the case of a patient with asymptomatic GCTB of the first rib that was successfully treated with combined preoperative denosumab therapy and surgery via a transmanubrial approach without resection of the clavicle. CASE REPORT A healthy 27-year-old woman presented with a bone tumor involving the left first rib that was incidentally discovered on routine chest X-ray. Histological examination of core-needle biopsy specimens of the lesion led to a pathological diagnosis of GCTB. After preoperative denosumab treatment for 6 months, en bloc resection via a transmanubrial approach was performed. There were no serious postoperative complications. The patient remained free of symptoms and had no recurrence 4.5 years after surgery. CONCLUSIONS Compared with other ribs, masses located in the first rib can be challenging to treat surgically because of the clavicle and neighboring neurovascular structures. This report is the first to describe GCTB located on the anterior aspect of the first rib that was successfully treated with combined preoperative denosumab therapy and surgery via a transmanubrial approach, with no recurrence or functional impairment of the shoulder girdle.


Assuntos
Conservadores da Densidade Óssea , Tumor de Células Gigantes do Osso , Adulto , Denosumab/uso terapêutico , Feminino , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/tratamento farmacológico , Tumor de Células Gigantes do Osso/cirurgia , Humanos , Recidiva Local de Neoplasia , Costelas/cirurgia
19.
J Clin Neurosci ; 89: 199-205, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34119266

RESUMO

The purpose of this study aimed to analyze and evaluate the radiologic and clinical outcomes of minimally invasive scoliosis surgery (MISS) for correcting adolescent idiopathic scoliosis (AIS) using the mini-open technique. Thirty-four AIS patients who underwent MISS using the mini-open technique for deformity correction. Using two to four 3-centimeter-long skin incisions (mini-open) and tubular retractors, we performed screw fixations, rod assembly, rod derotation maneuver (RD), and bone graft. For thoracoplasty, four to six ribs were resected using the same incisions. Correction was attempted using rod translation and RD maneuvers. Radiological outcomes and clinical outcomes (SRS-22) were evaluated. Mean preoperative Cobb's angle was 61.3° and curve flexibility (major curve) was 26.1%. This angle was corrected to 21.6° with a correction rate of 65.2% (P < 0.001). The coronal balance was not changed significantly. Sagittal vertical axes were corrected from -3.5 mm to 8.6 mm (-22 to 36.3 mm) (P = 0.009). Thoracic kyphosis angles and lumbar lordosis angles were not changed significantly but the values were within normal range. Each score of self-image in the SRS-22 questionnaire as well as the total score were improved significantly (P < 0.001). In conclusion, the MISS for correcting AIS using the mini-open technique showed comparable radiologic and clinical outcomes with fewer complications in patients with non-rigid scoliosis with Cobb's angle between 50° and 80°. Long-term results of this novel MISS using the mini-open technique could further strengthen the rationale for adopting this technique for curve correction in selected cases of AIS.


Assuntos
Vértebras Lombares/cirurgia , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Costelas/cirurgia , Escoliose/cirurgia , Vértebras Torácicas/cirurgia , Adolescente , Parafusos Ósseos , Transplante Ósseo/métodos , Criança , Feminino , Seguimentos , Humanos , Vértebras Lombares/diagnóstico por imagem , Estudos Retrospectivos , Costelas/diagnóstico por imagem , Escoliose/diagnóstico por imagem , Fusão Vertebral/métodos , Vértebras Torácicas/diagnóstico por imagem , Resultado do Tratamento
20.
Int J Oral Maxillofac Implants ; 36(3): 468-473, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34115060

RESUMO

PURPOSE: The aim of this study was to compare the bone collection capacity of bur drill systems used in implant surgery with different diameters, lengths, and drilling speeds. MATERIALS AND METHODS: This study was performed on bovine ribs. Two bur drill systems were studied: Implantium (Dentium) and Straumann (Institut Straumann). The groups were divided into subgroups according to the bur diameter. As a result, there were four Implantium subgroups (3.3, 3.8, 4.3, and 4.8 mm) and three Straumann subgroups (3.3, 4.1, and 4.8 mm). In addition, for each bur diameter, the bone collection capacities of the drill systems were evaluated at three different drilling speeds (150, 250, and 400 rpm) and two bur lengths (10 and 12 mm). The diameter, length, and speed changes were performed, and the results were compared between the two drill systems. RESULTS: The mean bone weight collected by using the Straumann burs was higher than that of the Implantium burs at each drilling speed and bur length. Using the Straumann system, the different drilling speeds/lengths of the burs had no impact on the bone collection capacity, irrespective of the bur diameter (P > .05). However, the drilling speeds/lengths of the Implantium system resulted in a statistically significant difference in the same diameters (P < .05). CONCLUSION: Both bur systems were suitable for autogenous graft collection for bone grafting in implant surgery, but the Straumann burs were more successful than the Implantium burs.


Assuntos
Implantação Dentária Endo-Óssea , Implantes Dentários , Animais , Bovinos , Costelas/cirurgia
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