8,970 results match your criteria implants loading


In vitro analysis of prosthetic abutment and angulable frictional implant interface adaptation: Mechanical and microbiological study.

J Biomech 2021 Sep 7;128:110733. Epub 2021 Sep 7.

Oral Pathology and Cell Biology Division, Faculdade São Leopoldo Mandic, Campinas, SP, Brazil. Electronic address:

The aim of this study was to evaluate, in vitro, the microbiological sealing at the implant and different angles frictional prosthetic abutment interface, submitted or not to mechanical cycling, as well as the deactivation force and evaluation of the implant-abutment interface by scanning electron microscopy. For this study, the sealing capacity of eighty sets of abutments/implants of each angle, with and without mechanical cycling, with internal conical connection (locking tapper) (4.3 mm × 9. Read More

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September 2021

Immediate implant placement following tooth extraction with simultaneous lateral sinus augmentation: a retrospective clinical study after at least 1 year of loading.

Int J Implant Dent 2021 Sep 16;7(1):96. Epub 2021 Sep 16.

Department of Oral and Maxillofacial Surgery, College of Medicine, Dong-A University, 26, Daesingongwon-ro, Seo-gu, Busan, 49201, South Korea.

Background: Lateral sinus augmentation is necessary when the residual bone height is insufficient in the posterior maxilla. Immediate implant placement following tooth extraction with lateral sinus augmentation will shorten the number of operations and treatment time.

Purpose: To evaluate radiologic and clinical results for at least 1 year after loading in patients who underwent tooth extraction, implant placement, and lateral sinus augmentation at the same time. Read More

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September 2021

Biomechanical assessment of two types and two different locations of subtalar arthroereisis implants for flexible flatfoot: A cadaveric study.

Clin Biomech (Bristol, Avon) 2021 Aug 30;89:105475. Epub 2021 Aug 30.

Department of Orthopedics, Huashan Hospital, Fudan University, 12 Middle Wulumuqi Road, Shanghai 200040, China. Electronic address:

Background: Subtalar arthroereisis refers to the implantation of a sinus tarsi implant for the treatment of flexible flatfoot. The purpose of this study was to compare the ability to correct the flatfoot deformity and contact pressure of the posterior subtalar joint between two types of self-locking wedge implants and between two different positions for the same device in a cadaveric flatfoot model.

Methods: The flatfoot model was created in ten cadaver feet through ligament sectioning and cyclic loading. Read More

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Basal Implants: An Asset for Rehabilitation of Atrophied Resorbed Maxillary and Mandibular Jaw - A Prospective Study.

Ann Maxillofac Surg 2021 Jan-Jun;11(1):64-69. Epub 2021 Jul 24.

Department of Oral and Maxillofacial Surgery, College of Dental Sciences and Research Centre, Ahmedabad, Gujarat, India.

Introduction: Conventional implants have great limitations in case of atrophic maxillary and mandibular ridges. Ultimately, patients who have severely atrophied jawbones paradoxically receive little or no treatment, as long as conventional implants are considered the device of first choice. Basal implants were developed with the goal to overcome the limitations of conventional implantology, primarily for atrophied ridges or inadequate bone with the protocol of immediate loading. Read More

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Influence of sagittal root positions on the stress distribution around custom-made root-analogue implants: a three-dimensional finite element analysis.

BMC Oral Health 2021 Sep 14;21(1):443. Epub 2021 Sep 14.

Second Dental Center, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, 100101, China.

Background: Stress concentration may cause bone resorption even lead to the failure of implantation. This study was designed to investigate whether a certain sagittal root position could cause stress concentration around maxillary anterior custom-made root-analogue implants via three-dimensional finite element analysis.

Methods: The von Mises stresses in the bone around implants in different groups were compared by finite element analysis. Read More

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September 2021

Consequences of Peri-Implant Bone Loss in the Occlusal Load Transfer to the Supporting Bone in terms of Magnitude of Stress, Strain, and Stress Distribution: A Finite Element Analysis.

Biomed Res Int 2021 1;2021:3087071. Epub 2021 Sep 1.

Department of Surgery, Faculty of Medicine, University of Salamanca, Salamanca, Spain.

Methods: Three models of a single internal connection bone level-type implant inserted into a posterior mandible bone section were constructed using a 3D finite element software: one control model without marginal bone loss and two test models, both with a circumferential peri-implant bone defect, one with a 3 mm high defect and the other one 6 mm high. A 150 N static load was tested on the central fossa at 6° relative to the axial axis of the implant.

Results: The results showed differences in the magnitude of strain and stress transferred to the bone between models, being the higher strain found in the trabecular bone around the implant with greater marginal bone loss. Read More

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September 2021

The effect of humeral implant thickness and canal fill on interface contact and bone stresses in the proximal humerus.

JSES Int 2021 Sep 8;5(5):881-888. Epub 2021 Jul 8.

Roth|McFarlane Hand and Upper Limb Center Biomechanics Laboratory, London, ON, Canada.

Background: Stem size is an important element for successful time zero primary fixation of a press-fit humeral stem in shoulder arthroplasty. Little basic science research, however, has been conducted on the effects of implant thickness and canal fill on load transfer, contact, and stress shielding. The purpose of this finite element study was to determine the effects of varying stem thickness on bone contact, bone stresses, and bone resorption owing to stress shielding. Read More

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September 2021

An evaluation of the stress effect of different occlusion concepts on hybrid abutment and implant supported monolithic zirconia fixed prosthesis: A finite element analysis.

J Adv Prosthodont 2021 Aug 26;13(4):216-225. Epub 2021 Aug 26.

Department of Prosthodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey.

Purpose: The aim of this study is to evaluate the effects of canine guidance occlusion and group function occlusion on the degree of stress to the bone, implants, abutments, and crowns using finite element analysis (FEA).

Materials And Methods: This study included the implant-prosthesis system of a three-unit bridge made of monolithic zirconia and hybrid abutments. Three-dimensional (3D) models of a bone-level implant system and a titanium base abutment were created using the original implant components. Read More

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Early Bone Healing on Hydroxyapatite-Coated and Chemically-Modified Hydrophilic Implant Surfaces in an Ovine Model.

Int J Mol Sci 2021 Aug 28;22(17). Epub 2021 Aug 28.

Department of Research and Development, Zimmer Biomet Dental, Palm Beach Gardens, FL 33410, USA.

Implant topography affects early peri-implant bone healing by changing the osteoconduction rate in the surrounding biological environment. Implant surfaces have been designed to promote faster and stronger bone formation for rapid and stable prosthesis loading. Early peri-implant bone healing has been observed with a sandblasted, acid-etched implant that was chemically modified to be hydrophilic (cmSLA). Read More

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Guided Bone Regeneration with Concentrated Growth Factor Enriched Bone Graft Matrix (Sticky Bone) vs. Bone-Shell Technique in Horizontal Ridge Augmentation: A Retrospective Study.

J Clin Med 2021 Aug 31;10(17). Epub 2021 Aug 31.

Department of Medical, Surgical and Health Sciences, University of Trieste, 34129 Trieste, Italy.

Background: The purpose of this study was to compare clinical results of two different horizontal ridge augmentation techniques: guided bone regeneration with sticky bone (SB) and the bone-shell technique (BS).

Methods: Records of patients who underwent horizontal ridge augmentation with SB (test) and BS (control) were screened for inclusion. Pre-operative and 6-month post-operative ridge widths were measured on cone beam computer tomography (CBCT) and compared. Read More

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The Early Adhesion Effects of Human Gingival Fibroblasts on Bovine Serum Albumin Loaded Hydrogenated Titanium Nanotube Surface.

Molecules 2021 Aug 28;26(17). Epub 2021 Aug 28.

Laboratory of Biomaterials and Biomechanics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing 100050, China.

The soft tissue sealing at the transmucal portion of implants is vital for the long-term stability of implants. Hydrogenated titanium nanotubes (H-TNTs) as implant surface treatments were proved to promote the adhesion of human gingival fibroblasts (HGFs) and have broad usage as drug delivery systems. Bovine serum albumin (BSA) as the most abundant albumin in body fluid was crucial for cell adhesion and was demonstrated as a normal loading protein. Read More

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Laterally rotated flap for soft tissue augmentation around maxillary loaded osseointegrated dental implants: preliminary results of a pilot study.

Int J Implant Dent 2021 Sep 9;7(1):94. Epub 2021 Sep 9.

Departament of Stomatology, Faculty of Medicine, University of Murcia, Murcia, Spain.

A minimal width and thickness of keratinized and attached soft tissue is desirable to prevent peri-implant diseases. This report describes the preliminary results of a pilot study of a surgical approach for soft tissue augmentation around loaded dental implants in the partially or totally edentulous maxilla. Four patients presenting eight maxillary implants with a buccal peri-implant soft tissue deficiency received a laterally rotated flap. Read More

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September 2021

Biomechanics of a calcar loading and a shortened tapered femoral stem: Comparative in-vitro testing of primary stability and strain distribution.

J Exp Orthop 2021 Sep 7;8(1):74. Epub 2021 Sep 7.

Institute of Orthopaedic Research and Biomechanics, Trauma Research Centre, Ulm University Medical Centre, Helmholtzstr. 14, 89081, Ulm, Germany.

Purpose: The most common femoral short stems available on the market can, in principle, be divided with regard to their anchoring concepts into a calcar loading and a shortened tapered design. The purpose of this study was to compare the primary stability and stress-shielding of two short stems, which correspond to these two different anchoring concepts.

Methods: Using seven paired fresh frozen human cadaver femurs, primary axial and rotational stabilities under dynamic load (100-1600 N) were evaluated by miniature displacement transducers after 100,000 load cycles. Read More

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September 2021

Computer-assisted implant placement and full-arch immediate loading with digitally prefabricated provisional prostheses without cast: a prospective pilot cohort study.

Int J Implant Dent 2021 Sep 6;7(1):80. Epub 2021 Sep 6.

Department of Oral and Maxillo-Facial Sciences, "Sapienza" University of Rome, Via Caserta, 6, 00161, Rome, Italy.

Background: Immediate loading of implant-supported full-arch rehabilitations has become routine practice when treating edentulous patients. The combination of static computer-aided implant surgery (s-CAIS) and digital prosthetic workflow could eliminate several treatment steps and facilitate prostheses delivery. The aim of this study is to evaluate the 1-year results of digitally prefabricated polymethyl methacrylate (PMMA) provisional prostheses without a cast for full-arch computer-assisted immediate loading. Read More

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September 2021

Calcar-guided short-stem total hip arthroplasty: Will it be the future standard? Review and perspectives.

World J Orthop 2021 Aug 18;12(8):534-547. Epub 2021 Aug 18.

Department of Orthopaedic Surgery, St Josefs Hospital Wiesbaden, Germany, Wiesbaden 65189, Germany.

Short stems in total hip arthroplasty (THA) are becoming increasingly popular. In Germany, already 10.4% of all primary THAs are performed using a cementless short stem. Read More

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Editorial Commentary: All-Suture Anchors Are Small, Easier to Revise, and Biomechanically Equivalent to Conventional Implants: They Are the Way of the Future.

Authors:
Ronald S Paik

Arthroscopy 2021 09;37(9):2807-2808

All-suture anchors (ASAs) show biomechanical equivalence to conventional implants. The smaller size and easier ability to revise are important advantages of ASAs. A more vertical insertion angle increases ASA pullout strength. Read More

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September 2021

EFFECT OF LOCALLY DELIVERED BISPHOSPHONATES ON ALVEOLAR BONE: A SYSTEMATIC REVIEW AND META-ANALYSIS.

J Evid Based Dent Pract 2021 09 29;21(3):101580. Epub 2021 Apr 29.

BDS, MPH, Department of society and Health, Faculty of Social Sciences and Humanities, Mahidol University, Nakhon Pathom, Thailand.

Objective: To assess the effect of locally applied bisphosphonate drugs on alveolar bone defects caused by periodontitis and marginal bone level after placement of dental implants.

Materials And Methods: Three electronic databases (PubMed/MEDLINE, Web of Science, and Scopus) were searched from January 2010 until May 2020 for randomized controlled clinical trials reporting the effect of locally delivered bisphosphonates on alveolar bone. The risk of bias was assessed and quantitative synthesis was conducted with both fixed and random-effects meta-analyses by using RevMan version 5. Read More

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September 2021

Bone remodelling patterns around orthodontic mini-implants migrating in bone: an experimental study in rat vertebrae.

Eur J Orthod 2021 Sep 3. Epub 2021 Sep 3.

Department of Orthodontics, University Clinic of Düsseldorf, Germany.

Background: Orthodontic implant migration has been clinically observed in presence of continuous loading forces. Recent studies indicate that osteocytes play a crucial role in this phenomenon.

Objectives: Aim of this study was to investigate local osteocytic gene expression, protein expression, and bone micro-structure in peri-implant regions of pressure and tension. Read More

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September 2021

Clinical and radiological outcomes of novel digital workflow and dynamic navigation for single-implant immediate loading in aesthetic zone: 1-year prospective case series.

Clin Oral Implants Res 2021 Sep 1. Epub 2021 Sep 1.

Department of Implant Dentistry, Loma Linda University School of Dentistry, Loma Linda, CA, USA.

Objectives: To evaluate clinical, radiological performance of novel digital workflow integrating dynamic navigation to streamline in one-visit single-implant immediate loading in aesthetic zone.

Material And Methods: Consecutive patients requiring one single-implant in aesthetic zone of both jaws were treated between May and September 2017. Primary outcomes were implant and prosthetic success rates, surgical and prosthetic complications, marginal bone loss (MBL), final pink aesthetic score (PES-f), and implant stability quotient (ISQ-f). Read More

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September 2021

The influence of alternating cyclic dynamic loads with different low frequencies on the bio-corrosion behaviors of AZ31B magnesium alloy .

Bioact Mater 2022 Jan 11;7:263-274. Epub 2021 Jun 11.

School of Materials Science and Engineering, Southeast University, Nanjing, 211189, Jiangsu, China.

The real physiological environment of human body is complicated with different degrees and forms of dynamic loads applied to implanted medical devices due to the daily activities of the patients, which would have impacts on the degradation behaviors of magnesium alloy implants. In this work, the bio-corrosion behaviors of AZ31B magnesium alloy under alternating cyclic dynamic loads with different low frequencies (0.1-2. Read More

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January 2022

Survey of Dental Implant and Restoration Selection by Prosthodontists in Dubai.

Int J Dent 2021 17;2021:8815775. Epub 2021 Aug 17.

Department of Prosthodontics, Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, UAE.

Background: With various surgical and prosthetic component designs being introduced in dental implants, decisions have to be made when choosing a system and a certain prosthodontic protocol. A survey of implant prosthodontic specialists has not been previously performed in the Middle East.

Aim: This study aimed to determine selection criteria and choice of dental implants and restorations by prosthodontic specialists in the Emirate of Dubai, United Arab Emirates. Read More

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The Effects of Local Alendronate With or Without Recombinant Human Bone Morphogenetic Protein 2 on Dental Implant Stability and Marginal Bone Level: A Randomized Controlled Study.

J Craniofac Surg 2021 Aug 27. Epub 2021 Aug 27.

Department of Oral and Maxillofacial Surgery, College of Dentistry, University of Baghdad, Baghdad, Iraq.

Abstract: The aim of this study was to evaluate the effects of local application of bisphosphonate gel and recombinant human bone morphogenic protein 2 gel, on titanium dental implant stability and marginal bone level. Twenty-seven patients with upper and lower missing posterior tooth/teeth were included in the study with a total of 71 implants that were used for rehabilitation. The implants were randomly divided into 4 groups: 3 study groups and 1 control. Read More

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Comparison of Fixation Techniques in Oblique and Biplanar Chevron Medial Malleolar Osteotomies; a Finite Element Analysis.

J Foot Ankle Surg 2021 Jul 23. Epub 2021 Jul 23.

Professor, Department of Engineering, Lancaster University, Lancaster, United Kingdom.

This study aimed to evaluate different fixation techniques and implants in oblique and biplanar chevron medial malleolar osteotomies using finite element analysis. Both oblique and biplanar chevron osteotomy models were created, and each osteotomy was fixed with 2 different screws (3.5 mm cortical screw and 4. Read More

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Load applied on osseointegrated implant by transfemoral bone-anchored prostheses fitted with state-of-the-art prosthetic components.

Clin Biomech (Bristol, Avon) 2021 Aug 24;89:105457. Epub 2021 Aug 24.

ÖSSUR, R&D, Medical Office, Grjothals 1-5, Reykjavik, Iceland.

Background: This study presented the load profile applied on transfemoral osseointegrated implants by bone-anchored prostheses fitted with state-of-the-art ÖSSUR microprocessor-controlled Rheo Knee XC and energy-storing-and-returning Pro-Flex XC or LP feet during five standardized daily activities.

Methods: This cross-sectional cohort study included 13 participants fitted with a press-fit transfemoral osseointegrated implant. Loading data were directly measured with the tri-axial transducer of an iPecsLab (RTC Electronics, USA) fitted between the implant and knee unit. Read More

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3D printing of dual-cell delivery titanium alloy scaffolds for improving osseointegration through enhancing angiogenesis and osteogenesis.

BMC Musculoskelet Disord 2021 Aug 27;22(1):734. Epub 2021 Aug 27.

Department of Department of Bone and Joint, Affiliated Hospital of Southwest Medical University, 646000, Luzhou, People's Republic of China.

Background: The repair of large bone defects is a great challenge for orthopedics. Although the development of three-dimensional (3D) printed titanium alloy (Ti6Al4V) implants with optimized the pore structure have effectively promoted the osseointegration. However, due to the biological inertia of Ti6Al4Vsurface and the neglect of angiogenesis, some patients still suffer from postoperative complications such as dislocation or loosening of the prosthesis. Read More

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Functionalization of Silicone Surface with Drugs and Polymers for Regulation of Capsular Contracture.

Polymers (Basel) 2021 Aug 15;13(16). Epub 2021 Aug 15.

Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam 13620, Korea.

Breast reconstruction is achieved using silicone implants, which are currently associated with major complications. Several strategies have been considered to overcome the existing limitations as well as to improve their performance. Recently, surface modification has proved to be an effective clinical approach to prevent bacterial adhesion, reduce capsular thickness, prevent foreign body reactions, and reduce other implant-associated problems. Read More

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Improving Free Gingival Graft Success Around Implants Using a Completed Implant Restoration.

Compend Contin Educ Dent 2021 Sep;42(8):452-458

Adjunct Clinical Professor and Director of Clinical Research, Ashman Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, New York; Private Practice, New York, New York.

Keratinized mucosa around implants is considered essential for maintaining peri-implant health. Clinicians may find it necessary to augment keratinized tissue after implant loading when complications arise. Immobilizing the graft can be challenging when there is a complete absence of attached gingiva or when the vestibule is shallow creating an opportunity for muscle forces to move the graft. Read More

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September 2021

Comparison of Crestal Bone Heights Following Implant Placement with "Flapless" and "Flap" Techniques in the Sites of Early Loaded Implants.

J Pharm Bioallied Sci 2021 Jun 5;13(Suppl 1):S370-S374. Epub 2021 Jun 5.

Department of Prosthodontics, Government Dental College and Hospital, Raipur, Chhattisgarh, India.

Purpose: The purpose was to evaluate the difference in crestal bone loss (CBL) around implants with flap and flapless methods followed by early loading.

Materials And Methods: Twenty implants were placed in twenty patients - ten using flap and ten using flapless techniques. The difference in CBL was measured on standardized digital periapical radiograph taken at 0 week, 6 weeks, 12 weeks, and 6 months. Read More

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Comparative Evaluation of Marginal Bone Loss and Implant Failure Rate in Smokers and Nonsmokers.

J Pharm Bioallied Sci 2021 Jun 5;13(Suppl 1):S203-S206. Epub 2021 Jun 5.

Department of Prosthodontics, Patna Dental College and Hospital, Patna, India.

Background: Smoking impose various ill-effects on the alveolar bone concerning dental implants including reduced bone height, delayed healing of bone, poor peri-implant bone formation, increased bone loss, and peri-implantitis.

Aims: The present clinical trial was aimed to analyze the smoking effect on dental implant survival rate as well as marginal bone loss in dental implants.

Materials And Methods: Out of 86 patients, Group I had 43 patients who were smokers and Group II had nonsmokers. Read More

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Active Tactile Sensibility of Brånemark Protocol Prostheses: A Case-Control Clinical Study.

Materials (Basel) 2021 Aug 18;14(16). Epub 2021 Aug 18.

School of Dental Medicine, Stony Brook University, New York, NY 11794, USA.

Few studies have assessed active tactile sensibility in patients rehabilitated with implants. Improved knowledge about functional tactile sensibility will contribute to several clinical applications, such as protocols for immediate loading, prosthesis design, occlusal improvement in implantology, and physiological integration of implant-supported prostheses. The present study evaluated active tactile sensibility in patients rehabilitated with Brånemark-type mandibular prostheses that impede the total mucosa-supported maxillary prosthesis. Read More

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