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F1000Research 2019Aortic valve replacement has stood the test of time but is no longer an operation that is exclusively approached through a median sternotomy using only sutured... (Review)
Review
Aortic valve replacement has stood the test of time but is no longer an operation that is exclusively approached through a median sternotomy using only sutured prostheses. Currently, surgical aortic valve replacement can be performed through a number of minimally invasive approaches employing conventional mechanical or bioprostheses as well as sutureless valves. In either case, the direct surgical access allows inspection of the valve, complete excision of the diseased leaflets, and debridement of the annulus in a controlled and thorough manner under visual control. It can be employed to treat aortic valve pathologies of all natures and aetiologies. When compared with transcatheter valves in patients with a high or intermediate preoperative predictive risk, conventional surgery has not been shown to be inferior to transcatheter valve implants. As our understanding of sutureless valves and their applicability to minimally invasive surgery advances, the invasiveness and trauma of surgery can be reduced and outcomes can improve. This warrants further comparative trials comparing sutureless and transcatheter valves.
Topics: Aortic Valve; Aortic Valve Stenosis; Bioprosthesis; Heart Valve Prosthesis; Heart Valve Prosthesis Implantation; Humans
PubMed: 31354937
DOI: 10.12688/f1000research.17995.1 -
Journal of Prosthodontic Research Feb 2021This systematic review was performed to compare tooth, implant and prosthesis failures and biological and technical complications in toothimplant vs freestanding implant... (Meta-Analysis)
Meta-Analysis
PURPOSE
This systematic review was performed to compare tooth, implant and prosthesis failures and biological and technical complications in toothimplant vs freestanding implant supported fixed partial prostheses, in order to evaluate the effectiveness and predictability in combining teeth and implants in the same fixed partial prosthesis.
STUDY SELECTION
A comprehensive and systematic literature research was conducted, according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement, to identify human trials, with a minimum sample size of 10 patients, comparing tooth-implant to freestanding implant supported fixed partial prostheses. Four groups of meta-analyses were performed based on the patients treated with toothimplant vs freestanding implant-supported fixed partial prostheses: abutment failures, biological and mechanical complications, prosthesis failures, and prosthetic (technical) complications.
RESULTS
The search yielded 749 records, after removal of duplicates. Based on the title assessment, the abstracts reading and the full-texts evaluation, 8 articles, published between 1999 and 2013, fulfilled the inclusion criteria and were included in the meta-analysis. The studies included were: 4 controlled clinical trials, 2 prospective and 2 retrospective cohort studies. The meta-analysis revealed no significant difference between tooth-implant and implant-implant supported fixed in the number of abutment (implant or tooth) failures, biological complications, prosthesis lost, and prosthetic complications.
CONCLUSIONS
Within the limitations of the present systematic review, although the freestanding implant supported fixed partial prosthesis remains the first choice, joining teeth and implants to support fixed prosthesis in partially edentulous patients becomes a valid alternative with an acceptable success rate.
Topics: Dental Implants; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Denture, Partial, Fixed; Humans; Prospective Studies; Retrospective Studies
PubMed: 32938874
DOI: 10.2186/jpr.JPOR_2019_494 -
Journal of Biomedical Optics Feb 2021Rehabilitation through facial prostheses' main goal is to aid individual's social reintegration as well as improving their quality of life. However, this treatment is...
SIGNIFICANCE
Rehabilitation through facial prostheses' main goal is to aid individual's social reintegration as well as improving their quality of life. However, this treatment is not yet widely available in Brazil due to the lack of specialized clinics and the cost associated with the high number of necessary medical appointments until the final result. One of the steps in the process consists of measuring skin color, which is observer-dependent and may suffer from the effect of metamerism.
AIM
The methodology of our work aims to obtain a standard between different devices and greater fidelity to the color seen in person in order to reduce face-to-face iterations, reduce costs, and ensure better final results.
APPROACH
A physical device and a computer program were improved from previous projects. The changes included implementing the Thin-Plate Spline 3D algorithm for color calibration, in addition to an optional non-uniform illumination correction in the process. We also aim to improve the project's accessibility using a colorimeter. The methodology and the algorithms were both compared to readings from direct skin measurements as well as color references.
RESULTS
After processing, the ΔEab* metric between images from the same segments is taken with different cameras and conditions of illumination decreased from 18.81 ± 4.85 to 4.85 ± 1.72. In addition, when the images were compared to colorimetric readings of the skin, the difference went from 14.93 ± 4.11 to 5.85 ± 1.61. It was also observed that using a less expensive device did not impact the readings. The project is open source and available at Github.
CONCLUSIONS
The results demonstrate the possibility of applying the methodology to assist in the manufacturing of facial prostheses to decrease the total number of consultations, in addition to providing greater reliability of the final result.
Topics: Calibration; Color; Humans; Prostheses and Implants; Quality of Life; Reproducibility of Results; Skin
PubMed: 33583152
DOI: 10.1117/1.JBO.26.2.025002 -
Journal of Indian Prosthodontic Society 2023The loss of a finger in any capacity as a result of trauma has a significant influence on the patient's everyday life, as well as their psychological and physical...
The loss of a finger in any capacity as a result of trauma has a significant influence on the patient's everyday life, as well as their psychological and physical health. Multiple conventional techniques have been reported in the literature, mostly offering psychological and cosmetic benefits to such individuals. However, there is a paucity of literature for functional finger prosthesis. This case report describes rehabilitation of an amputated index finger using an innovative digital workflow, thereby making it impression-free, cast-free, accurate, less time-consuming, and above all functionally viable. Digital technology was used for designing, and fabrication of this prosthesis was done using three-dimensional (3-D) printing. When compared to traditional prostheses, this 3-D-printed prosthesis was functional, allowing the patient to conduct everyday activities and providing the patient's confidence a psychological boost.
Topics: Humans; Prosthesis Design; Dental Implants; Prosthesis Implantation; Fingers; Artificial Limbs
PubMed: 37102547
DOI: 10.4103/jips.jips_372_21 -
Dental and Medical Problems 2022Delayed loading in the rehabilitation of edentulous patients with an implant-supported prosthesis implies a longer treatment time. It requires additional surgery to...
BACKGROUND
Delayed loading in the rehabilitation of edentulous patients with an implant-supported prosthesis implies a longer treatment time. It requires additional surgery to uncover the submerged implants, and this may increase patients' discomfort and morbidity.
OBJECTIVES
The immediate loading-based technique described in this article involves creating a metal framework by intraorally welding the implants pair by pair, using specific wing abutments. The aim of the study was to investigate the implant-prosthetic success and complication rates of this technique when used to rehabilitate totally edentulous patients.
MATERIAL AND METHODS
The clinical records of totally edentulous patients were retrospectively evaluated. The prosthetic success rate as well as technical and biological complications were analyzed. Furthermore, the implant survival and success rates were assessed by measuring marginal bone loss (MBL) at the implant, prosthesis and patient levels.
RESULTS
The records of 37 patients (284 implants and 43 prostheses) were included in the study. At the last follow-up (45.5 ±33.6 months), the prosthetic success rate was 100%. Mucositis affected 4 implants (1.4%), while peri-implantitis affected 4 implants (1.4%). Meanwhile, 7 implants (2.5%) showed a lack of early osseointegration. According to the criteria of Albrektsson et al., 271 implants (95.4%) were successful. The average MBL at the implant, prosthesis and patient levels was 0.26 ±0.42 mm, 0.26 ±0.19 mm and 0.26 ±0.18 mm, respectively.
CONCLUSIONS
The technique described in this article seems to be a viable approach to the rehabilitation of totally edentulous patients through immediate loading. However, these results should be confirmed by appropriately designed prospective and comparative clinical studies.
Topics: Dental Implants; Dental Prosthesis, Implant-Supported; Humans; Jaw, Edentulous; Mouth, Edentulous; Prospective Studies; Retrospective Studies; Welding
PubMed: 36098486
DOI: 10.17219/dmp/149470 -
BioMed Research International 2022Innovations in digital manufacturing enabled the fabrication of implant-supported fixed dental prostheses (ISFDPs) in a wide variety of recently introduced materials.... (Review)
Review
Innovations in digital manufacturing enabled the fabrication of implant-supported fixed dental prostheses (ISFDPs) in a wide variety of recently introduced materials. Computer-aided design and computer-aided manufacturing (CAD-CAM) milling allows the fabrication of ISFDPs with high accuracy by reducing the fabrication steps of large-span frameworks. The longevity of ISFDPs depends on the overall mechanical properties of the framework material including its fit, and the physical properties of the veneering material and its bond with the framework. This comprehensive review summarizes the recent information on millable CAD-CAM framework materials such as pre-sintered soft alloys, fiber-reinforced composite resins, PEEK, and PEKK in high-performance polymer family, and 4Y-TZP. Even though promising results have been obtained with the use of new generation millable CAD-CAM materials for ISFDPs, clinical studies are lacking and future research should focus on the overall performance of these millable materials in both static and dynamic conditions.
Topics: Composite Resins; Computer-Aided Design; Dental Materials; Dental Prosthesis Design; Denture, Partial, Fixed; Materials Testing; Polymers; Prostheses and Implants; Zirconium
PubMed: 35281596
DOI: 10.1155/2022/3074182 -
JACC. Cardiovascular Imaging Jan 2023
Topics: Humans; Transcatheter Aortic Valve Replacement; Predictive Value of Tests; Aortic Valve; Heart Valve Prosthesis Implantation; Prostheses and Implants; Heart Valve Prosthesis; Aortic Valve Stenosis; Treatment Outcome; Hemodynamics; Prosthesis Design; Risk Factors
PubMed: 36599556
DOI: 10.1016/j.jcmg.2022.10.013 -
BioMed Research International 20213D printing technology is widely used in the field of implantable medical device in recent decades because of its advantages in high precision, complex structure, and... (Review)
Review
3D printing technology is widely used in the field of implantable medical device in recent decades because of its advantages in high precision, complex structure, and high material utilization. Based on the characteristics of 3D printing technology, this paper reviews the manufacturing process, materials, and some typical products of 3D printing implantable medical devices and analyzes and summarizes the development trend of 3D printed implantable medical devices.
Topics: Biocompatible Materials; Blood Vessel Prosthesis; Ceramics; Humans; Joint Prosthesis; Lasers; Orthopedics; Polymers; Printing, Three-Dimensional; Prostheses and Implants; Prosthesis Design; Stents; Technology, Pharmaceutical
PubMed: 33521128
DOI: 10.1155/2021/6653967 -
Acta Clinica Croatica Oct 2022Stapes surgery is generally performed to treat otosclerosis, and there are numerous surgical techniques and prosthesis materials available. Critical evaluation of... (Clinical Trial)
Clinical Trial
Stapes surgery is generally performed to treat otosclerosis, and there are numerous surgical techniques and prosthesis materials available. Critical evaluation of postoperative hearing outcomes is crucial for identification and further improvement of treatment options. This study is a non-randomized retrospective analysis of hearing threshold levels before and after stapedectomy or stapedotomy in 365 patients during a twenty-year period. The patients were classified into three groups depending on the prosthesis and surgery type: stapedectomy with Schuknecht prosthesis placement and stapedotomy with either Causse or Richard prosthesis. The postoperative air-bone gap (ABG) was calculated by subtracting the bone conduction pure tone-audiogram (PTA) from the air conduction PTA. Hearing threshold levels were evaluated preoperatively and postoperatively from 250 Hz to 12 kHz. The results showed air-bone gap reduction <10 dB in 72% patients, 70% of patients, and 76% of patients using Schucknecht's prosthesis, Richard prosthesis, and Causse prosthesis, respectively. The results did not differ significantly between three prothesis types. Choice of prosthesis should be made individually for each patient, but surgeon competency is still the most important outcome variable, regardless of prosthesis type.
Topics: Humans; Retrospective Studies; Bone Conduction; Treatment Outcome; Hearing; Stapes Surgery; Prostheses and Implants
PubMed: 37250664
DOI: 10.20471/acc.2022.61.s4.5 -
Orthopadie (Heidelberg, Germany) Sep 2023More than almost any other implant, fully implantable intramedullary distraction nails have changed corrective and reconstructive bone surgery. Based on the fundamentals... (Review)
Review
More than almost any other implant, fully implantable intramedullary distraction nails have changed corrective and reconstructive bone surgery. Based on the fundamentals of callus distraction, these new apparatus developments with their novel planning strategies and minimally invasive surgical techniques have opened up a wide range of indications and made the treatment reproducible and safe. The prerequisite, however, is that standardized procedures are adhered to, which concern both the preparation for the surgery, the surgery itself and the subsequent distraction treatment. Treatment with fully implantable intramedullary distraction nails should be performed at specialized centers, so that the paradigm shift in corrective and reconstructive limb surgery, which is already recognizable, will open the door for further developments.
Topics: Nails; Internal Fixators; Fracture Fixation, Intramedullary; Prostheses and Implants; Bone Lengthening; Dioctyl Sulfosuccinic Acid; Phenolphthalein
PubMed: 37620678
DOI: 10.1007/s00132-023-04418-x