Failure Analysis of Retrieved Osteosynthesis Implants

Nica, Mihai; Creţu, Bogdan; Ene, Dragoș; Antoniac, Iulian Vasile; Gheorghiță, Daniela; Ene, Răzvan

doi:10.3390/ma13051201

Cited by 16 publications

(17 citation statements)

References 26 publications

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“…Whereas the most common reasons for the removal of orthopedic implants and osteosynthesis screws are iatogrenic and biomechanical [5], the most common cause of dental implant failure was observed to be biological. This finding is concurrent with previous research [11,16,21], given the constant exposure of dental implants to the oral microbiota.…”

Section: Discussionmentioning

confidence: 99%

“…Treatment with dental implants has become routine for partially and completely edentulous elderly patients [1], with increased use in recent years [2,3]. Such a frequent use invariably leads to a large number of failed implants, i.e., a high absolute number of failures despite the high success rates of contemporary implant systems, as also reported for orthopedic and osteosynthesis implants [4,5].…”

Section: Introductionmentioning

confidence: 99%

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A Novel, Minimally Invasive Method to Retrieve Failed Dental Implants in Elderly Patients

et al. 2021

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This practice-based study presents the clinical outcomes of a minimally invasive method for retrieving failed dental implants from elderly patients. Traditional removal methods for failed dental implants include trephination and other invasive procedures. That can be a special concern for the elderly, since aging exacerbates oral surgery-related morbidity and anxiety. This retrospective cohort study gathers data from 150 patients seen in a private clinic. Their implants (n = 199) failed due to biological, mechanical, or iatrogenic causes, and were removed as part of their treatment plan. Collected data included: (1) implant location (maxilla/mandible, anterior/posterior region), (2) reasons for implant retrieval, (3) connection type, (4) removal torque, and (5) operatory procedure—flapless and using a counter-torque removal kit, whenever possible. Flapless/minimally invasive retrieval was successful for 193 implants (97%). The remaining six implants demanded trephination (open-flap). The most common reasons for implant retrieval (81%) involved biological aspects, whereas iatrogenic (12%) and biomechanical (7%) reasons were less common. The surgical technique used was not associated to connection types or removal torque. Authors conclude that a counter-torque ratchet system is a minimally invasive technique with a high success rate in retrieving implants from elderly patients. Present findings support its use as a first-line approach for implant retrieval in that population.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel, Minimally Invasive Method to Retrieve Failed Dental Implants in Elderly Patients

et al. 2021

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“…Colţea ENT Clinic used an original implantation technique of the Montgomery prosthesis that met the criteria for optimal reconstruction: refueling facility, oral method, reduced complications and mortality, period of hospitalization with lower costs [ 22 ]. In selected cases, where mandible reconstruction was needed, a multidisciplinary team of general surgeon and orthopedic surgeon was required [ 34 , 35 ].…”

Section: Methodsmentioning

confidence: 99%

The Role of Biomaterials in Upper Digestive Tract Transoral Reconstruction

et al. 2021

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This study aims to establish whether the use of biomaterials, particularly polydimethylsiloxane (PDMS), for surgical reconstruction of the esophagus with templates, Montgomery salivary tube, after radical oncology surgery for malignant neoplasia is an optimal choice for patients’ safety and for optimal function preservation and organ rehabilitation. Structural analysis by Raman spectrometry and biomechanical properties with dynamic mechanical analysis are performed for fatigue strength and toughness, essential factors in durability of a prosthesis in the reconstruction practice of the esophagus. Nanocomposites with silicone elastomers and nanoparticles used in implantable devices and in reconstruction surgery present risks of infection and fatigue strength when required to perform a mechanical effort for long periods of time. This report takes into account the effect of silver (Ag) nanoparticles on the fatigue strength using polydimethylsiloxane (PDMS) matrix, representative for silicon elastomers used in implantable devices. PDMS with 5% (wt) Ag nanoparticles of 100–150 nm during mechanical fatigue testing at shear strength loses elasticity properties after 400 loading-unloading cycles and up to 15% shear strain. The fatigue strength, toughness, maximum shear strength, as well as clinical properties are key issues in designing Montgomery salivary tube and derivates with appropriate biomechanical behavior for each patient. Prosthesis design needs to indulge both clinical outcomes as well as design methods and research in the field of biomaterials.

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“…Colţea ENT Clinic used an original implantation technique of the Montgomery prosthesis that met the criteria for optimal reconstruction: refueling facility, oral method, reduced complications and mortality, period of hospitalization with lower costs [22]. In selected cases were mandible reconstruction was needed a multidisciplinary team of general surgeon and orthopedic surgeon were required [27,28].…”

Section: Clinical Surgerymentioning

confidence: 99%

The Role of Biomaterials in Upper Digestive Tract Transoral Reconstruction

Grigore¹,

Popescu²,

Berteșteanu³

et al. 2020

Preprint

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This study aims to establish whether the use of biomaterials, particularly polydimethylsiloxane (PDMS), for surgical reconstruction of the esophagus with templates, Montgomery salivary tube, after radical oncology surgery for malignant neoplasia is an optimal choice for patients’ safety and for optimal function preservation and organ rehabilitation. Methods: Structural analysis by Raman spectrometry and biomechanical properties with dynamic mechanical analysis are performed for fatigue strength and toughness, essential factors in durability of a prosthesis in the reconstruction practice of the esophagus. Nanocomposites with silicone elastomers and nanoparticles used in implantable devices and in the reconstruction surgery are facing risks of infection and fatigue strength when required to perform a mechanical effort for long periods of time. Results: This report takes into account the effect of silver (Ag) nanoparticles on the fatigue strength using polydimethylsiloxane (PDMS) matrix, representative for silicon elastomers used in implantable devices. PDMS with 5% (wt) Ag nanoparticles of 100-150 nm during mechanical fatigue testing at shear strength loses elasticity properties after 400 loading-unloading cycles and up to 15% shear strain. The fatigue strength, toughness, maximum shear strength are the key issues in designing Montgomery salivary tube with appropriate biomechanical behavior for each patient. Conclusions: Prosthesis design needs to indulge both clinical outcome as well as design methods and research in the field of biomaterials.

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Failure Analysis of Retrieved Osteosynthesis Implants

Cited by 16 publications

References 26 publications

A Novel, Minimally Invasive Method to Retrieve Failed Dental Implants in Elderly Patients

A Novel, Minimally Invasive Method to Retrieve Failed Dental Implants in Elderly Patients

The Role of Biomaterials in Upper Digestive Tract Transoral Reconstruction

The Role of Biomaterials in Upper Digestive Tract Transoral Reconstruction

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