Influence of the implant diameter and bone quality on the primary stability of porous tantalum trabecular metal dental implants: anin vitrobiomechanical study

2016 ◽  
Vol 29 (6) ◽  
pp. 649-655 ◽  
Author(s):  
Georgios E. Romanos ◽  
Rafael Arcesio Delgado-Ruiz ◽  
Danielle Sacks ◽  
Josè Luis Calvo-Guirado
Keyword(s):  
Dental Implants ◽  
Bone Quality ◽  
Primary Stability ◽  
Trabecular Metal ◽  
Porous Tantalum

scholarly journals Implant Prosthodontic Rehabilitation after Surgical Treatment for an Oropharyngeal Malignant Tumour Using Tantalum Dental Implants

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Marko Vuletić ◽  
Ivica Pelivan ◽  
Dragana Gabrić
Keyword(s):  
Head And Neck ◽  
Dental Implants ◽  
Oral Surgery ◽  
Trabecular Metal ◽  
Tobacco Exposure ◽  
Implant Surface ◽  
Oral Rehabilitation ◽  
Porous Tantalum ◽  
Oncologic Patients

Oropharyngeal cancer (OPC) represents a significant portion of head and neck cancers. In most cases, it is localised in the soft palate, lingual and palatine tonsils, base of the tongue, and the surrounding tissues. Alcohol and tobacco exposure are well-known evidence-based risk factors for developing OPC; however, over the last decade, there has been a rapid increase in OPC linked to human papillomavirus (HPV). Dental implant therapy faces many challenges related to immediate and long-term success, and patients who are rehabilitated with implant prosthodontic therapy often have numerous comorbidities. Tantalum is a rare transitional metal element which has high corrosion resistance and is extremely inert. Porous tantalum trabecular metal (PTTM) has high volumetric porosity, a low modulus of elasticity, and very high friction. PTTM implant surface enhancement allows “osseoincorporation,” which means the neovascularisation and formation of new bone directly onto the implant. A 65-year-old patient presented to the Department of Oral Surgery of Clinical Hospital Centre Zagreb after resection of the mandible due to OPC had oral rehabilitation. Three Zimmer Biomet Trabecular Metal™ implants ( 4.1 × 10   mm ) were inserted in the area of lower left first incisor, lower left second premolar, and lower right second premolar, and after four months, a new upper partial denture and the bar-retained mandibular overdenture were made. Implant prosthodontic rehabilitation of head and neck cancer patients is usually challenging in terms of achieving an improvement in its main aim, quality of life; however, today it is a safe and reliable therapy. Although radiation therapy may negatively affect the patient’s oral condition and influence the short- and long-term success of the implant, the presented case report showed that the excellent properties of PTTM-enhanced dental implants may give great basis for future comparative researches of using these implants in the treatment of oncologic patients.

Comparing Initial Wound Healing and Osteogenesis of Porous Tantalum Trabecular Metal and Titanium Alloy Materials

2019 ◽  
Vol 45 (3) ◽  
pp. 173-180 ◽  
Author(s):  
Sompop Bencharit ◽  
Thiago Morelli ◽  
Silvana Barros ◽  
Jackson T. Seagroves ◽  
Steven Kim ◽  
...  
Keyword(s):  
Gene Expression ◽  
Wound Healing ◽  
Titanium Alloy ◽  
Dental Implants ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Trabecular Metal ◽  
Porous Tantalum ◽  
Expression Of Genes ◽  
Conventional Titanium Alloy

Porous tantalum trabecular metal (PTTM) has long been used in orthopedics to enhance neovascularization, wound healing, and osteogenesis; recently, it has been incorporated into titanium alloy dental implants. However, little is known about the biological responses to PTTM in the human oral cavity. We have hypothesized that, compared with conventional titanium alloy, PTTM has a greater expression of genes specific to neovascularization, wound healing, and osteogenesis during the initial healing period. Twelve subjects requiring at least 4 implants in the mandible were enrolled. Four 3 × 5mm devices, including 2 titanium alloy tapered screws and 2 PTTM cylinders, were placed in the edentulous mandibular areas using a split-mouth design. One device in each group was trephined for analysis at 2 and 4 weeks after placement. RNA microarray analysis and ingenuity pathway analysis were used to analyze osteogenesis gene expression and relevant signaling pathways. Compared to titanium alloy, PTTM samples exhibited significantly higher expressions of genes specific to cell neovascularization, wound healing, and osteogenesis. Several genes—including bone morphogenic proteins, collagens, and growth factors—were upregulated in the PTTM group compared to the titanium alloy control. PTTM materials may enhance the initial healing of dental implants by modifying gene expression profiles.

scholarly journals Association between Bone Density Values, Primary Stability and Histomorphometric Analysis of Dental Implant Osteotomy Sites on the Upper Jaw

Folia Medica ◽  
2020 ◽  
Vol 62 (3) ◽  
pp. 563-571
Author(s):  
Vasilena Ivanova ◽  
Ivan Chenchev ◽  
Stefan Zlatev ◽  
Dimitar Atanasov
Keyword(s):  
Bone Density ◽  
Dental Implants ◽  
Bone Quality ◽  
Mechanical Stability ◽  
Primary Stability ◽  
Bone Allograft ◽  
Histomorphometric Analysis ◽  
Socket Preservation ◽  
Density Values ◽  
Protein Rich

Introduction: Sufficient bone volume, as well as the bone quality characteristics are necessary prerequisites to ensure optimal mechanical stability of the implants and subsequent osseointegration. Aim: The aim of the present study was to assess the correlation between bone density values obtained by cone-beam computed tomography (CBCT), the primary stability of dental implants and the histomorphometric analysis of bone quality. Materials and methods: Following tooth extraction, socket preservation with frieze-dried bone allograft or protein-rich fibrin (PRF) was performed on 30 patients with 30 maxillary teeth in the region from second premolar to second premolar. Four months after the procedure, CBCT was used to assess the bone density (Hounsfield units) in the area of extraction. Thirty bone samples were harvested from implant sites using a trephine drill. They were analyzed with Image J software. Immediately after placing the implant, the implant stability quotient was measured using the Osstell Idx device. Results: The results revealed significant correlations between bone density and primary stability along the vestibulo-oral (r=0.392, p=0.032) and mesiodistal axes (r=0.407, p=0.026). Bone density also correlated strongly with the percentage of newly formed bone (r=0.776, p<0.001). Conclusion: Bone quality, in terms of bone density measured in CBCT and new bone formation are correlated to the primary stability of the dental implants and vice versa.

scholarly journals Development and Applications of Porous Tantalum Trabecular Metal-Enhanced Titanium Dental Implants

2013 ◽  
Vol 16 (6) ◽  
pp. 817-826 ◽  
Author(s):  
Sompop Bencharit ◽  
Warren C. Byrd ◽  
Sandra Altarawneh ◽  
Bashir Hosseini ◽  
Austin Leong ◽  
...  
Keyword(s):  
Dental Implants ◽  
Trabecular Metal ◽  
Porous Tantalum ◽  
Titanium Dental Implants

scholarly journals Effect of bone quality and quantity on the primary stability of dental implants in a simulated bicortical placement

2020 ◽  
Author(s):  
Stefan Rues ◽  
Marc Schmitter ◽  
Stefanie Kappel ◽  
Robert Sonntag ◽  
Jan Philippe Kretzer ◽  
...  
Keyword(s):  
Dental Implants ◽  
Bone Quality ◽  
Primary Stability

Retrospective analysis of porous tantalum trabecular metal–enhanced titanium dental implants

2019 ◽  
Vol 121 (3) ◽  
pp. 404-410 ◽  
Author(s):  
Alexander R. Edelmann ◽  
Devang Patel ◽  
Riley K. Allen ◽  
Chad J. Gibson ◽  
Al M. Best ◽  
...  
Keyword(s):  
Retrospective Analysis ◽  
Dental Implants ◽  
Trabecular Metal ◽  
Porous Tantalum ◽  
Titanium Dental Implants
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