scholarly journals Dental Implant Abutments and Their Selection - A Review

2021 ◽  
Vol 10 (35) ◽  
pp. 3053-3059
Author(s):  
Veena Benakatti ◽  
Jayashree Arun Sajjanar ◽  
Aditya Ramnarayan Acharya
Keyword(s):  
Dental Implants ◽  
Complete Information ◽  
Individual Case ◽  
Implant Placement ◽  
Prosthesis Retention ◽  
Soft Tissue Profile ◽  
Implant Abutments ◽  
Implant Abutment ◽  
Implant Dentistry ◽  
Selection Of

Dental implants have become the most promising and accepted prosthetic alternative to missing teeth. Innovative and technological advances in implant dentistry have improved the performance and long term prognosis of dental implants. The growing demand for dental implants has led many manufacturers to enter the industry. With this growth in implant dentistry various implant brands and their components are made available in the markets that vary in terms of design and other features. Success of implant restorations is related to various components involved with the prosthesis. Implant abutment is the link between implant and restoration; right selection of this abutment is vital for the success of implant prosthesis. There are varieties of implant abutments available in the market. Clinician should have adequate knowledge about these abutments and various factors that affect abutment selection, to choose the right one. Each implant case is different and clinician should be able to identify requirements of every individual case and choose the best suitable abutment available in the market. These abutments vary in implant abutment connection, material, type of retention, and fabrication methods. Though the ideal concept is prosthetically driven implant placement, many times anatomical features, esthetic requirements, soft tissue profile, axial load distribution, malpositioned implants, and many other patient factors do not allow ideal implant placement. Such cases can be managed by careful selection of abutments by assessing the clinical requirements, thus offering better treatment outcome. This paper is an attempt to contemplate various factors affecting abutment selection, and throw light on various implant abutments available in the market, thus guiding the clinician in abutment selection. Hence this article summarizes complete information about the implant abutments, including introduction, types, selection, and different abutments available in market. KEY WORDS Abutment Material, Implant Abutments, Implant Abutment Connection, Prosthesis Retention

scholarly journals Titanium Wear of Dental Implants from Placement, under Loading and Maintenance Protocols

2021 ◽  
Vol 22 (3) ◽  
pp. 1067
Author(s):  
Georgios Romanos ◽  
Gerard Fischer ◽  
Rafael Delgado-Ruiz
Keyword(s):  
Adverse Effects ◽  
Inflammatory Response ◽  
Dental Implants ◽  
Soft Tissues ◽  
Loading Conditions ◽  
Material Change ◽  
Implant Placement ◽  
Implant Abutment ◽  
Hard Tissues ◽  
Titanium Nanoparticles

The objective of this review was to analyze the process of wear of implants leading to the shedding of titanium particles into the peri-implant hard and soft tissues. Titanium is considered highly biocompatible with low corrosion and toxicity, but recent studies indicate that this understanding may be misleading as the properties of the material change drastically when titanium nanoparticles (NPs) are shed from implant surfaces. These NPs are immunogenic and are associated with a macrophage-mediated inflammatory response by the host. The literature discussed in this review indicates that titanium NPs may be shed from implant surfaces at the time of implant placement, under loading conditions, and during implant maintenance procedures. We also discuss the significance of the micro-gap at the implant-abutment interface and the effect of size of the titanium particles on their toxicology. These findings are significant as the titanium particles can have adverse effects on local soft and hard tissues surrounding implants, implant health and prognosis, and even the health of systemic tissues and organs.

scholarly journals Application of Interval Fuzzy Logic in Selecting a Sustainable Supplier on the Example of Agricultural Production

Symmetry ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 774
Author(s):  
Adis Puška ◽  
Miroslav Nedeljković ◽  
Sarfaraz Hashemkhani Zolfani ◽  
Dragan Pamučar
Keyword(s):  
Decision Making ◽  
Fuzzy Logic ◽  
Asymmetric Information ◽  
Agricultural Production ◽  
Complete Information ◽  
Sustainable Supply Chain ◽  
Sustainability Criteria ◽  
Criteria Importance ◽  
Selection Of ◽  
Economic Criteria

The selection of sustainable suppliers (SSS) is the first step in applying a sustainable supply chain and sustainable production. Therefore, it is necessary to select the supplier that best meets the set sustainability criteria. However, the selection of suppliers cannot be done by applying symmetric information, because the company does not have complete information, so asymmetric information should be used when selecting suppliers. Since the SSS applies three main sustainability criteria, environmental, social, and economic criteria, this decision-making problem is solved by applying multi-criteria decision-making (MCDM). In order to solve the SSS for the needs of agricultural production, interval fuzzy logic was applied in this research, and six suppliers with whom agricultural pharmacies in Semberija work were taken into consideration. The application of interval fuzzy logic was performed using the methods PIPRECIA (Pivot pairwise relative criteria importance assessment) and MABAC (Multi-Attributive Border Approximation Area Comparison). Using the PIPRECIA method, the weights of criteria and sub-criteria were determined. Results of this method showed that the most significant are economic criteria, followed by the social criteria. The ecological criteria are the least important. The supplier ranking was performed using the MABAC method. The results showed that supplier A4 best meets the sustainability criteria, while supplier A6 is the worst. These results were confirmed using other MCDM methods, followed by the sensitivity analysis. According to the attained results, agricultural producers from Semberija should buy the most products from suppliers A4, in order to better apply sustainability in production. This paper showed how to decision make when there is asymmetric information about suppliers.

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.

scholarly journals Comparative radiographic and resonance frequency analyses of the peri-implant tissue after dental implants placement using flap and flapless techniques: An experimental study on domestic pigs

2013 ◽  
Vol 70 (6) ◽  
pp. 586-594 ◽  
Author(s):  
Zoran Vlahovic ◽  
Branko Mihailovic ◽  
Zoran Lazic ◽  
Mileta Golubovic
Keyword(s):  
Bone Resorption ◽  
Resonance Frequency ◽  
Dental Implants ◽  
Dental Implant ◽  
Surgical Techniques ◽  
Primary Stability ◽  
Implant Stability ◽  
Domestic Pigs ◽  
Flap Technique ◽  
Implant Placement

Background/Aim. Flapless implant surgery has become very important issue during recent years, mostly thanks to computerization of dentistry and software planning of dental implants placements. The aim of this study was to compare flap and flapless surgical techniques for implant placement through radiographic and radiofrequency analyses. Methods. The experiment was made in five domestic pigs. Nine weeks following domestic pigs teeth extraction, implants were placed, on the right side using surgical technique flap, and flapless on the left side. Digital dental Xrays were applied to determine primary dental implant stability quality (ISQ). At certain intervals, not later than three months, the experimental animals were sacrificed, and just before it, control X-rays were applied to measure dental implants stability. Results. Radiographic analysis showed that peri-implant bone resorption in the first 4 weeks following placement implants with flap and flapless surgical techniques was negligible. After the 3 months, mean value of peri-implant bone resorption of the implants placed using flap technique was 1.86 mm, and of those placed using flapless technique was 1.13 mm. In relation to the primary dental implant stability in the first and second week there was an expected decrease in ISQ values, but it was less expressed in the dental implants placed using the flapless technique. In the third week the ISQ values were increased in the dental implants placed by using both techniques, but the increase in flapless implant placement was higher (7.4 ISQ) than in flap implant placement (1.5 ISQ). The upward trend continued in a 4- week period, and after 3 months the dental implant stability values in the implants placed using flap technique were higher than the primary stability for 7.1 ISQ, and in the implants placed using flapless technique were higher comparing to the primary stability for 10.1 ISQ units. Conclusion. Based on the results of radiographic and resonance frequency analyses it can be concluded that the flapless technique in surgical implants placemat, leads to better results.

SHORT IMPLANT’S: TREATMENT OPTION FOR ATROPHIC RIDGE IN ORAL IMPLANTOLOGY: A REVIEW

2021 ◽  
pp. 60-62
Author(s):  
Sonu Kumar ◽  
Narendra Kumar ◽  
Vikram Kapoor ◽  
Pallavi Sirana
Keyword(s):  
Treatment Option ◽  
Treatment Plan ◽  
Treatment Modalities ◽  
Treatment Alternative ◽  
Short Implants ◽  
Implant Dentistry ◽  
Bone Mapping ◽  
Bone Height ◽  
Oral Implantology ◽  
Selection Of

Implant dentistry has seen rapid progress in recent years leading to its application as standard treatment modalities. While selecting treatment plan, bone mapping and selection of implant is very essential for a successful implant practice. In case of an atrophic ridge where bone height is less, then selection of short implant could be a good treatment alternative, as it is a conservative treatment option because it prevents the need of sinus lift, alveolar nerve repositioning, and bone grafting. This article will discuss about how? when to use short implants along with their advantages, disadvantages of short implants in details.

Evaluation of the accuracy of a novel surgical guide for flapless dental implant placement for immediate loading in edentulous jaws

2021 ◽  
Author(s):  
Giovanni de Almeida Prado Di Giacomo ◽  
Patrícia Cury ◽  
Airton Moreira da Silva ◽  
Jorge Vicente Lopes da Silva ◽  
Carlos Eduardo Pompeo Souto ◽  
...  
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Selective Laser Sintering ◽  
Apical Region ◽  
Virtual Planning ◽  
Surgical Guide ◽  
Implant Placement ◽  
Surgical Guides ◽  
Edentulous Jaws ◽  
Edentulous Jaw

This study was designed to evaluate the accuracy of a novel computer-designed and selectively laser sintered surgical guide for flapless dental implant placement in the edentulous jaw. Fifty dental implants were placed in 11 patients with at least one totally edentulous jaw. Initially, cone-beam computed tomography (CBCT) was performed in each patient to define the virtual position of the dental implants based on the assessment of bone availability and the proposed dental prosthesis. After virtual planning, 3D surgical guides were printed using selective laser sintering. CBCT was repeated after the surgery, and the pre-and postoperative images were overlapped in the CAD software to compare the planned and actual positions of the dental implants using a one-sample t-test. The mean ± angular standard deviation between the long axes of the planned and final dental implant positions was 4.58 ±2.85 degrees; The linear deviation in the coronal position was  0.87 ± 0.49 mm and  in the apical region of the dental implants was 1.37 ± 0.69 mm. These differences were statistically significant (p &lt;0.001). The proposed modifications reduced the deviations, resulting in an improvement in the technique. We were able to place implants and temporary prostheses using the present protocol, taking into account the differences between the planned and final positions of the dental implants.

scholarly journals Effect of Using Nano and Micro Airborne Abrasive Particles on Bond Strength of Implant Abutment to Prosthesis

2015 ◽  
Vol 26 (1) ◽  
pp. 50-55 ◽  
Author(s):  
Mansour Rismanchian ◽  
Amin Davoudi ◽  
Elham Shadmehr
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Control Group ◽  
Abrasive Particles ◽  
Significant Difference ◽  
Implant Abutments ◽  
Implant Abutment ◽  
Roughened Surface ◽  
Bond Strengths ◽  
Spss Software

Connecting prostheses to the implant abutments has become a concern and achieving a satisfactory retention has been focused in cement-retention prostheses recently. Sandblasting is a method to make a roughened surface for providing more retention. The aim of this study was to compare effects of nano and micro airborne abrasive particles (ABAP) in roughening surface of implant abutments and further retention of cemented copings. Thirty Xive abutments and analogues (4.5 D GH1) were mounted vertically in self-cured acrylic blocks. Full metal Ni-Cr copings with a loop on the top were fabricated with appropriate marginal adaptation for each abutment. All samples were divided into 3 groups: first group (MPS) was sandblasted with 50 µm Al2O3 micro ABAP, second group (NSP) was sandblasted with 80 nm Al2O3 nano ABAP, and the third group (C) was assumed as control. The samples were cemented with provisional cement (Temp Bond) and tensile bond strength of cemented copings was evaluated by a universal testing machine after thermic cycling. The t test for independent samples was used for statistical analysis by SPSS software (version 15) at the significant level of 0.05. Final result showed significant difference among all groups (p<0.001) and MPS manifested the highest mean retention (207.88±45.61 N) with significant difference among other groups (p<0.001). The control group showed the lowest bond strength as predicted (48.95±10.44 N). Using nano or micro ABAP is an efficient way for increasing bond strengths significantly, but it seems that micro ABAP was more effective.

Complications Associated With the Use of Recombinant Human Bone Morphogenic Protein–2 in Ridge Augmentation: A Case Report

2017 ◽  
Vol 43 (5) ◽  
pp. 351-359 ◽  
Author(s):  
Panagiotis Dragonas ◽  
Charles Palin ◽  
Saba Khan ◽  
Praveen K. Gajendrareddy ◽  
Whitney D. Weiner
Keyword(s):  
Case Report ◽  
Bone Morphogenic Protein ◽  
Human Bone ◽  
Therapy Outcomes ◽  
Bone Maturation ◽  
Ridge Augmentation ◽  
Implant Placement ◽  
Implant Dentistry ◽  
Bone Morphogenic Protein 2 ◽  
Recombinant Human Bone

This case report aims to describe in detail a complication associated with resorption of regenerated bone following implant placement and ridge augmentation using recombinant human bone morphogenic protein–2 (rhBMP-2) in combination with allograft and xenograft. Bilateral maxillary sinus and ridge augmentation procedures were completed using rhBMP-2 combined with allograft and xenograft. Five months later, significant bone augmentation was achieved, which allowed for the placement of 4 implants. Upon stage 2 surgery, significant dehiscence was noted in all implants. Treatment steps to address this complication included implant removal, guided bone regeneration with xenograft only, and placement of new implants followed by soft-tissue grafting. At the time of publication, this patient is status 1½ years post case completion with maintenance of therapy outcomes. Off-label use of rhBMP-2 has gained significant acceptance in implant dentistry. However, there is limited evidence regarding the bone maturation process when rhBMP-2 is combined with other biomaterials. More research may be needed regarding the timing and process of bone healing in the presence of rhBMP-2, in an effort to avoid surgical complications.

scholarly journals Role of Bone Grafts in Implant Surgery: A Review

2021 ◽  
Vol 5 (8) ◽  
pp. RV1-RV5
Author(s):  
Chandni ◽  
Vinit Kumar
Keyword(s):  
Dental Implants ◽  
Bone Grafts ◽  
Recipient Site ◽  
Implant Surgery ◽  
Natural Teeth ◽  
Pros And Cons ◽  
Implant Dentistry

Introduction of dental implants and more concern in patients about esthetics after loss of natural teeth increases the demand of bone grafts. Various types of bone grafts as allografts, xenografts and autografts are used all with their own pros and cons. Bone grafts are more likely to succeed when the conditions at the recipient site are favourable and certain requirements are fulfilled. This review explores the use of various bone grafts in implant dentistry.

scholarly journals Stability of dental implants with sandblasted and acid-etched (SLA) and modified (SLActive) surfaces during the osseointegration period

2021 ◽  
Vol 15 (4) ◽  
pp. 226-231
Author(s):  
Gulsum Sayin Ozel ◽  
Ozgur Inan ◽  
Asli Secilmis Acar ◽  
Gamze Alniacik Iyidogan ◽  
Dogan Dolanmaz ◽  
...  
Keyword(s):  
Dental Implants ◽  
Surface Properties ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Osteoprogenitor Cells ◽  
Implant Placement ◽  
Modified Surfaces ◽  
Surface Measurements ◽  
The Stability ◽  
Over Time

Background. The surface properties of implants are effective factors for increasing the osseointegration and activity of osteoprogenitor cells. This study compared the stability of dental implants with sandblasted and acid-etched (SLA) and modified surfaces (SLActive) using the resonance frequency analysis (RFA). Methods. In a split-mouth design, 50 dental implants with either SLA surface properties (n=25) or modified (SLActive) surface properties (n=25) were placed in the mandibles of 12 patients with a bilateral posterior edentulous area. Implant stability was measured using RFA (Osstell) at implant placement time and every week for 1, 2, and 3 months before the conventional loading time. Results. One week following the implantation, implant stability increased from 70 to 77.67 for SLA and from 71.67 to 79 for SLActive (P<0.05). Stability improved each week except in the 4th week in SLActive surface measurements. No significant differences were observed between the groups at 2 and 3 months (P>0.05). Conclusions. For both implant surfaces, increased stability was observed over time, with no significant differences between the groups.

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