scholarly journals Application of Bio-Oss in tissue regenerative treatment prior to implant installation: literature review

2019 ◽  
Vol 22 (2) ◽  
pp. 147-154
Author(s):  
Alessandra De Carvalho Moreira ◽  
Jhenifer Rodrigues Silva ◽  
Renata De Paula Samico ◽  
Gabriela Nogueira de Melo Nishioka ◽  
Renato Sussumu Nishioka
Keyword(s):  
Literature Review ◽  
Bone Graft ◽  
Bone Substitute ◽  
Survival Rates ◽  
Natural Mineral ◽  
Beneficial Effects ◽  
Long Term Stability ◽  
Implant Placement ◽  
High Level

Objetivo: Bio-Oss is a xenogene bone graft in which all organic components are removed while retaining their natural mineral architecture. Therefore, the aim of this study was to evaluate, through a literature review, the benefits of using Bio-Oss for tissue regenerative treatment prior to implant placement. Material and Methods: a search was performed in Pubmed (Medline) in order to identify articles published in English between January 1, 2000 and June 31, 2018, where the Bio-Oss graft was used prior to implantation of implants in humans. A total of 40 studies were selected for detailed analysis. From this analysis, 18 articles were identified for inclusion in this review. Results: the articles analyzed in the review showed several beneficial effects of this xenograft, such as: positive osteoconductive properties, recovery of bone heights at sites with severe atrophies, slow xenograft reabsorption suggesting long term stability, survival rates and success of implants placed in grafted sites ranging from 91 to 100% in several studies. Conclusion: the use of bio-oss as a bone substitute is a viable alternative in the placement before dental implants, being used in clinical practice and with proved efficacy in several studies, due to its similarity with the bone and its high level of osteoconductivity.KeywordsBio-Oss; Bone Graft; Implants.

scholarly journals Long-term stability of autologous bone graft of intraoral origin after lateral sinus floor elevation with simultaneous implant placement

2018 ◽  
Vol 20 (5) ◽  
pp. 713-721 ◽  
Author(s):  
Marcello Maddalone ◽  
Luca Mirabelli ◽  
Pier Matteo Venino ◽  
Lorena Karanxha ◽  
Gianluca Porcaro ◽  
...  
Keyword(s):  
Bone Graft ◽  
Autologous Bone Graft ◽  
Lateral Sinus ◽  
Sinus Floor Elevation ◽  
Term Stability ◽  
Long Term Stability ◽  
Implant Placement ◽  
Sinus Floor ◽  
Autologous Bone

scholarly journals Clinical long-term and patient-reported outcomes of dental implants in oral cancer patients

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Eik Schiegnitz ◽  
Lena Katharina Müller ◽  
Keyvan Sagheb ◽  
Lisa Theis ◽  
Vahide Cagiran ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Oral Cancer ◽  
Cancer Patients ◽  
Dental Implants ◽  
Survival Rates ◽  
Implant Survival ◽  
Implant Placement ◽  
Patient Reported ◽  
Oral Cancer Patients

Abstract Background and purpose The aim of this clinical study was to investigate the clinical long-term and patient-reported outcome of dental implants in patients with oral cancer. In addition, analysis of the influence of radiation therapy, timing of implant insertion, and augmentation procedures on implant survival was performed. Material and methods This retrospective study investigated the clinical outcome of 711 dental implants in 164 oral cancer patients, inserted by experienced surgeons of the Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Germany. Oral health-related quality of life (OHRQoL) was evaluated. Results Cumulative 5-year and 10-year implant survival rates for all included implants were 87.3% and 80.0%. Implants placed straight after ablative surgery (primary implant placement) and implants placed after completing the oncologic treatment (secondary implant placement) showed a comparable implant survival (92.5% vs. 89.5%; p = 0.635). Irradiation therapy had no significant influence on implant survival of secondary placed implants (p = 0.929). However, regarding implant site (native bone vs. augmented bone) and radiation therapy (non-irradiated bone vs. irradiated bone), implants inserted in irradiated bone that received augmentation procedures showed a statistically significant lower implant survival (p < 0.001). Patients reported a distinct improvement in OHRQoL. Conclusions Promising long-term survival rates of dental implants in patients after treatment of oral cancer were seen. In addition, patients benefit in form of an improved OHRQoL. However, bone augmentation procedures in irradiated bone may result in an impaired implants’ prognosis.

Low Alkaline Cement Used in the Construction of a Gallery in the Horonobe Underground Research Laboratory

2010 ◽  
Author(s):  
Masashi Nakayama ◽  
Haruo Sato ◽  
Yutaka Sugita ◽  
Seiji Ito ◽  
Masashi Minamide ◽  
...  
Keyword(s):  
Fly Ash ◽  
Research Laboratory ◽  
Concrete Lining ◽  
Energy Agency ◽  
Tunnel Support ◽  
Long Term Stability ◽  
Alkaline Conditions ◽  
High Level ◽  
Underground Research Laboratory

In Japan, any high level radioactive waste (HLW) repository is to be constructed at over 300 m depth below surface. Tunnel support is used for safety during the construction and operation, and shotcrete and concrete lining are used as the tunnel support. Concrete is a composite material comprised of aggregate, cement and various admixtures. Low alkaline cement has been developed for the long term stability of the barrier systems whose performance could be negatively affected by highly alkaline conditions arising due to cement used in a repository. Japan Atomic Energy Agency (JAEA) has developed a low alkaline cement, named as HFSC (Highly Fly-ash Contained Silicafume Cement), containing over 60 wt% of silica-fume (SF) and fly-ash (FA). HFSC was used experimentally as the shotcrete material in construction of part of the 140m deep gallery in the Horonobe Underground Research Laboratory (URL). The objective of this experiment was to assess the performance of HFSC shotcrete in terms of mechanics, workability, durability, and so on. HFSC used in this experiment is composed of 40 wt% OPC (Ordinary Portland Cement), 20 wt% SF, and 40 wt% FA. This composition was determined based on mechanical testing of various mixes of the above components. Because of the low OPC content, the strength of HFSC tends to be lower than that of OPC. The total length of tunnel using HFSC shotcrete is about 73 m and about 500 m3 of HFSC was used. The workability of HFSC shotcrete was confirmed in this experimental construction.

Long-Term Stability of Alveolar Bone Graft in Cleft Lip and Palate Patients

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Arezoo Jahanbin ◽  
Elaheh Kamyabnezhad ◽  
Mohammad Ali Raisolsadat ◽  
Fahimeh Farzanegan ◽  
Erfan Bardideh
Keyword(s):  
Bone Graft ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Alveolar Bone ◽  
Term Stability ◽  
Long Term Stability

scholarly journals Errors in Implant Positioning Due to Lack of Planning: A Clinical Case Report of New Prosthetic Materials and Solutions

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1883 ◽  
Author(s):  
Marco Tallarico ◽  
Roberto Scrascia ◽  
Marco Annucci ◽  
Silvio Mario Meloni ◽  
Aurea Immacolata Lumbau ◽  
...  
Keyword(s):  
Case Report ◽  
Treatment Plan ◽  
Survival Rates ◽  
Primary Treatment ◽  
High Survival ◽  
Adequate Treatment ◽  
Implant Position ◽  
Implant Positioning ◽  
Implant Placement

The achievement of the optimal implant position is a critical consideration in implant surgery, as it can facilitate the ideal prosthesis design and allow adequate oral hygiene maintenance. The switch from bone-driven to prosthetic-driven implant placement, through a comprehensive diagnosis and adequate treatment plan, is a prerequisite for long-term successful implant-based therapy. The aim of the present case report is to describe a step-by-step prosthetic retreatment of a patient with primary treatment failure due to incorrect dental implant placement. Although dental implants achieve high survival rates, the success of implant prosthetic therapy significantly relies on an appropriate implant position. Malpositioned implants can cause damage to vital structures, like nerves or vessels. Moreover, improper implant positioning can result in esthetic, biological, and technical complications and can, in extreme situations, render the desired prosthetic rehabilitation impossible to achieve.

scholarly journals Agenesis of Maxillary Lateral Incisors: Treatment Involves Much More Than Just Canine Guidance

2016 ◽  
Vol 10 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Giordani Santos Silveira ◽  
José Nelson Mucha
Keyword(s):  
Decision Making ◽  
Literature Review ◽  
Clinical Features ◽  
Congenital Absence ◽  
Term Stability ◽  
Long Term Stability ◽  
Canine Guidance ◽  
The Individual ◽  
Inform Decision Making

Objective: In this study, we aimed highlight some clinical features present in patients whose maxillary lateral incisors are missing, and proposed more logical, rational and predictable solutions to inform decision making in rehabilitation procedures. Methods: Literature review and discussion. Conclusion: Choosing the best possible treatment for congenital absence of maxillary lateral incisors depends on the multidisciplinary diagnosis of facial, occlusal, functional and periodontal features. It also depends on the individual long-term stability, and it does not only rely on canine-guided disocclusion.

A literature review of the role of brachytherapy in the management of early-stage breast cancer

2019 ◽  
Vol 19 (3) ◽  
pp. 281-290
Author(s):  
Rebecca Thorpe ◽  
Heather Drury-Smith
Keyword(s):  
Quality Of Life ◽  
Overall Survival ◽  
Local Recurrence ◽  
Literature Review ◽  
Survival Rates ◽  
External Beam Radiation ◽  
Recurrence Rates ◽  
Overall Survival Rates

AbstractBackground:This review evaluates whether brachytherapy can be considered as an alternative to whole breast irradiation (WBI) using criteria such as local recurrence rates, overall survival rates and quality of life (QoL) factors. This is an important issue because of a decline in local recurrence rates, suggesting that some women at very low risk of recurrence may be incurring the negative long-term side effects of WBI without benefitting from a reduction in local recurrence and greater overall survival. As such, the purpose of this literature review is to evaluate whether brachytherapy is a credible alternative to external beam radiation with a particular focus on the impact it has on patient QoL.Methods:The search terms used were devised by using the Population Intervention Comparison Outcome framework, and a literature search was carried out using Boolean connectors and Medical Subject Headings in the PubMed database. The resultant articles were manually assessed for relevance and appraised using the Scottish Intercollegiate Guidelines Network tool. Additional papers were sourced from the citations of articles found using the search strategy. Government guidelines and regulations were also used following a manual search on the National Institute for Health and Care Excellence website. This process resulted in a total of 30 sources being included as part of the review.Results:Three types of brachytherapy were the foundation for the majority of the papers found: interstitial multi-catheter brachytherapy, intra-cavity brachytherapy and permanent seed implantation. The key themes that arose from the literature were that brachytherapy is equivalent to WBI both in terms of 5-year local recurrence rates and overall survival rates at 10–12 years. The findings showed that brachytherapy was superior to WBI for some QoL factors such as being less time-consuming and equal in terms of others such as breast cosmesis. The results did also show that brachytherapy does come with its own local toxicities that could impact upon QoL such as the poor breast cosmesis associated with some brachytherapy techniques.Conclusion:In conclusion, brachytherapy was deemed a safe or acceptable alternative to WBI, but there is a need for further research on the long-term local recurrence rates, survival rates and quality of life issues as the volume of evidence is still significantly smaller for brachytherapy than for WBI. Specifically, there needs to be further investigation as to which patients will benefit from being offered brachytherapy and the influence that factors such as co-morbidities, performance status and patient choice play in these decisions.

Dose-Dependence of Pb-Ion Implantation Damage in Zirconolite, Hollandite, and Zircon

1981 ◽  
Vol 11 ◽  
Author(s):  
T. J. Headley ◽  
G. W. Arnold ◽  
C. J. M. Northrup
Keyword(s):  
Radiation Damage ◽  
Structural Damage ◽  
Accelerated Aging ◽  
Dose Dependence ◽  
High Level Waste ◽  
Long Term Stability ◽  
Waste Forms ◽  
Recent Approach ◽  
High Level

The long-term stability of nuclear waste forms is an important consideration in their selection for safe disposal of radioactive waste. Stability against long-term radiation damage is particularly difficult to assess by short-term laboratory experiments. Much of the displacement damage in high-level waste forms will be generated by heavy recoil nuclei emitted during the α-decay process of long-lived actinide elements. Hence, an accelerated aging test which reliably simulates the α-recoil damage accumulated during thousands of years of storage is desirable. One recent approach to this simulation is to implant the waste form with heavy Pb-ions.I- 6 If the validity of this approach is to be fully assessed, two important questions which have not yet been investigated must be answered.(1) Is the structural damage, including cumulative effects, similar for irradiation by Pb-ions and a-recoil nuclei in a given material? (2) Is the dose-dependence of the accumulated damage similar? The purpose of this investigation was to assess the extent of these similarities in selected materials. We utilized transmission electron microscopy (TEM) to characterize the radiation damage and measure its dose-dependence.

scholarly journals Long-term Stability of Early Implant Placement with Contour Augmentation

2013 ◽  
Vol 92 (12_suppl) ◽  
pp. 176S-182S ◽  
Author(s):  
D. Buser ◽  
V. Chappuis ◽  
U. Kuchler ◽  
M.M. Bornstein ◽  
J.G. Wittneben ◽  
...  
Keyword(s):  
Term Stability ◽  
Long Term Stability ◽  
Implant Placement

scholarly journals Distraction Osteogenesis of the Maxillofacial Region

2021 ◽  
pp. 1969-1995
Author(s):  
R. S. Neelakandan
Keyword(s):  
Bone Graft ◽  
Distraction Osteogenesis ◽  
Gold Standard ◽  
Clinical Condition ◽  
Bone Transport ◽  
Rigid Fixation ◽  
Maxillofacial Region ◽  
Long Term Stability ◽  
Osseointegrated Implants

AbstractMaxillomandibular reconstruction requires bone graft, heavy rigid fixation armamentarium and long hospitalization periods. Even with all this the final outcomes are still unpredictable. Patients treated with transport distraction osteogenesis present a better clinical condition, in terms of osteogenesis & histogenesis - identical to adjoining structures. It also has the benefit of producing a good quality and quantity of bone & mucosa, ideal for placement of osseointegrated implants. Thus, bone transport for maxillomandibular reconstruction has now become a gold standard for functional as well as esthetic reconstruction, offering a long term stability.

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