A Ring for a Ring Finger: A Case Report on Finger Prosthesis.

The primary use of the hand is to grasp, hold, and manipulate objects. Perhaps the most obvious kind of non-verbal communication is the hand gesture. The most common types of partial hand loss are finger and partial finger amputations. Traumatic injuries, congenital absences, or abnormalities are frequent causes, and they create significant treatment issues. In addition to the acute loss of grab power, the disappearance of fingers may result in significant psychological harm. People who want their fingers replaced frequently have high expectations for how a prosthesis will look. This clinical report illustrates an easy way to keep an acrylic finger prosthetic in place.

The effective surgical management of traumatic external auditory canal atresia resulting from a dog bite using a stent silicone prosthesis.

INTRODUCTION: Acquired external auditory canal (EAC) atresia is a very rare condition, especially due to direct trauma. The challenge lies in the difficulty of treatment and the tendency to recur even after a long period. Here we present a case report of treatment of recurrent EAC atresia resulting from a dog bite using a silicone stent prosthesis. CASE PRESENTATION: A 4-year-old, bitten by a dog, suffered severe head injuries, including scalp avulsion and left auricle avulsion. Initial treatment included wound closure, antibiotics, and vaccines. However, complications arose, leading to left EAC atresia and hearing loss. Surgical interventions, including canaloplasty and skin grafting, were conducted, with recurrence prompting second surgery with using a silicon prosthetic post-surgery. Follow-up for up to 14 months showed no evidence of recurrence of atresia, with complete improvement in hearing. DISCUSSION: Acquired stenosis of the External Auditory Canal (EAC) can result from various factors, predominantly otitis externa and traumatic incidents, including previous surgeries. Though direct trauma is rare, it can lead to stenosis. Surgical intervention is often necessary for post-traumatic cases, involving removal of obstructions, canal widening, and reconstruction. Management depends on maturity of stenosis, with non-surgical methods for soft stenoses and surgical procedures for mature ones, often supplemented by postoperative stents to preventing restenosis. CONCLUSION: Acquired external auditory canal atresia remains a rare, difficult-to-treat entity with a high rate of recurrence. The use of a silicone prosthesis stent after surgery can be considered an effective method in preventing recurrence.

Cold Atmospheric Helium Plasma in the Post-COVID-19 Era: A Promising Tool for the Disinfection of Silicone Endotracheal Prostheses.

Despite the excellent properties of silicone endotracheal prostheses, their main limitation is the formation of a polymicrobial biofilm on their surfaces. It can cause local inflammation, interfering with the local healing process and leading to further complications in the clinical scenario. The present study evaluated the inhibitory effect of cold atmospheric plasma (CAP) on multispecies biofilms grown on the silicone protheses' surfaces. In addition to silicone characterization before and after CAP exposure, CAP cytotoxicity on immortalized human bronchial epithelium cell line (BEAS-2B) was evaluated. The aging time test reported that CAP could temporarily change the silicone surface wetting characteristics from hydrophilic (80.5°) to highly hydrophilic (<5°). ATR-FTIR showed no significant alterations in the silicone surficial chemical composition after CAP exposure for 5 min. A significant log reduction in viable cells in monospecies biofilms (log CFU/mL) of C. albicans, S. aureus, and P. aeruginosa (0.636, 0.738, and 1.445, respectively) was detected after CAP exposure. Multispecies biofilms exposed to CAP showed significant viability reduction for C. albicans and S. aureus (1.385 and 0.831, respectively). The protocol was not cytotoxic to BEAS-2B. CAP can be a simple and effective method to delay multispecies biofilm formation inside the endotracheal prosthesis.

A Platform for Testing the Biocompatibility of Implants: Silicone Induces a Proinflammatory Response in a 3D Skin Equivalent.

Biocompatibility testing of materials is carried out in 2D cell cultures or animal models despite serious limitations. 3D skin equivalents are advanced in vitro models for human skin. Silicone has been shown to be noncytotoxic but capable of eliciting an immune response. Our aim was to (1) establish a 3D skin equivalent to (2) assess the proinflammatory properties of silicone. We developed a coculture of keratinocytes and fibroblasts resulting in a 3D skin equivalent with an implant using samples from a breast implant. Samples with and without the silicone implant were studied histologically and immunohistochemically in comparison to native human skin samples. Cytotoxicity was assessed via LDH-assay, and cytokine response was assessed via ELISA. Histologically, our 3D skin equivalents had a four-layered epidermal and a dermal component. The presence of tight junctions was demonstrated in immunofluorescence. The only difference in 3D skin equivalents with implants was an epidermal thinning. Implanting the silicone samples did not cause more cell death, however, an inflammatory cytokine response was triggered. We were able to establish an organotypical 3D skin equivalent with an implant, which can be utilised for studies on biocompatibility of materials. This first integration of silicone into a 3D skin equivalent confirmed previous findings on silicone being non-cell-toxic but capable of exerting a proinflammatory effect.

On the Safety of Implanted Breast Prostheses in Accidental Impacts.

The employment of breast silicone implants, both in aesthetic and reconstructive medicine, is widespread thanks to their recognized biocompatibility and durability. Some critical situations, for example, in the case of accidental impacts, may induce concerns by potential patients about their use. Dynamic tests reproducing frontal impacts at speeds up to 90 km/h, with anthropomorphic dummies carrying 330 cc prostheses and wearing safety belts, were conducted. Tests showed a significant probability of internal gel loss following implant damage at the highest speed. Moreover, considering that prostheses may remain implanted for many years, the effects of accelerated aging at 37 °C, 60 °C, 75 °C and 90 °C in physiological solution were also investigated. Tensile tests of the shell material and compressive tests of the full prosthesis showed evidence of variation in the prostheses' mechanical characteristics after aging, which affects their stiffness, deformability and strength. These results stress the importance of medical investigations for possible damages of the implanted prostheses in the case of an accident.

Analysis of breast follow-up results in patients after polyacrylamide hydrogel (PAAG) or silicone prosthesis removal.

BACKGROUND: Polyacrylamide hydrogel has been prohibited since 2006 due to numerous complications. Unsatisfactory breast contour was always observed in patients after PAAG removal. The same occurred in patients after silicone prosthesis removal. We attempt to compare and analyze the difference in postoperative breast conditions and pathology between the two groups. METHODS: We retrospectively reviewed the data of patients who underwent PAAG or silicone prosthesis removal between 2011 and 2021. The BREAST-Q was used to evaluate the follow-up results, including satisfaction with breasts, physical well-being, psychosocial well-being, sexual well-being, and the operation. RESULTS: A total of 63 patients were analyzed. The PAAG group complained of more lumps or indurations (p = 0.004), benefited less from operations as for symptomatic relief (p = 0.002), and had more chronic inflammation(p = 0.000) than the silicone group. No breast cancer was found. All the Breast-Q scores were lower in the PAAG group than in the silicone group, and there was a significant difference in satisfaction with physical well-being (p = 0.035). Besides, patients without symptoms tended to score higher in all aspects of Breast-Q than patients with symptoms after removal. The two groups (symptom & no symptom) differed in psychosocial well-being (p = 0.043) and satisfaction with operation (p = 0.048). CONCLUSIONS: The breast contour of patients after PAAG or silicone prosthesis removal was worse than before. Early removal of PAAG before complications arise may result in a better surgical benefit. There is no doubt that PAAG are harmful both physically and psychologically. All patients are suggested to have PAAG injections removed.

Values of mammography, ultrasound and magnetic resonance imaging in diagnosing breast cancer with silicone implants / 中华医学美学美容杂志

Objective:To investigate the diagnostic value of X-ray mammography, ultrasound and MRI in breast cancer with silicone implants.Methods:The clinical and imaging data of 20 patients with breast cancer in women with silicone implants in the First Affiliated Hospital of Zhengzhou University from March 2014 to October 2021 were analyzed retrospectively. The mammography, ultrasound and MRI findings were analyzed, and the differences in detection rate, diagnostic accuracy and omission diagnostic rate of breast cancer in women with implants were compared among the three imaging methods.Results:Compared with mammography, both ultrasound and MRI were able to display the prosthesis and breast lesions completely. There were significant differences in detection rate, diagnostic accuracy and omission diagnostic rate among mammography, ultrasound and MRI. And the detection rate and diagnostic accuracy of MRI in breast cancer in women with implants were higher than those of mammography, and the omission diagnostic rate was lower.Conclusions:Ultrasound and MRI are superior to mammography in evaluating breast cancer after silicone prosthesis implantation, and MRI has more advantages in guiding clinical diagnosis and treatment.

Enhancing retention and esthetics of fabricated silicone finger prosthesis using stump reduction technique and customized acrylic nail: A unique approach.

Prosthesis of any type is a necessity for a patient with defect to continue their daily life, on a socially acceptable level. The most commonly encountered forms of defects or loss include complete or partial finger amputations. One of the major concerns in the replacement of a partially amputated finger is inadequate retention of the prosthesis. This paper presents prosthetic rehabilitation of partially amputated index finger with a silicone prosthesis using reduced stump model technique and customized acrylic nail which enhances retention and esthetics of finger prosthesis.

Prosthetic management of a midfacial defect.

Surgical ablation of a large tumor creates a defect which is technically difficult to reconstruct. Radiated tissue bed poses a challenge to reconstruction and is complicated in presence of osteoradionecrosis. This report describes a case of a 62 year old gentleman with oral cancer who underwent surgery and radiotherapy twice. He developed an orocutaneous defect (OCD) following surgery and radiotherapy. Prosthetic rehabilitation of OCD was done. Full facial impression with irreversible hydrocolloid was made and wax sculpture made on the model obtained. Standard laboratory steps were followed for mould fabrication and maxillofacial silicone was used to fabricate the prosthesis. It was retained to the spectacle with silicone adhesives. The silicone facial prosthesis provided to the patient was easy to use, covered the defect and improved the quality of life of the patient.

A systematic review and meta-analysis of the efficacy and complication rates of augmentation rhinoplasty with autologous cartilage and silicone prosthesis.

BACKGROUND: Rhinoplasty is one of the most common operations in plastic and aesthetic surgery. Both solid silicone material and autologous cartilage (AC) tissue have their individual advantages and disadvantages. In this meta-analysis, the efficacy, complication rate of rhinoplasty with AC and silicone material were comprehensively analyzed and compared. METHODS: The databases Medline, Embase, PubMed, China National Knowledge Infrastructure (CNKI) and Wanfang were searched by rapid matching of keywords to obtain randomized controlled trials related to AC rhinoplasty or silicone filled rhinoplasty, which were analyzed using the software Stata 16.0 after screening and quality assessment. RESULTS: A total of 1,233 patients undergoing rhinoplasty from 7 articles were included in the study. Meta-analysis showed that rhinoplasty with AC would gain more satisfaction [risk ratio (RR) =1.11; 95% confidence interval (CI): (1.02, 1.21); Z=2.413; P=0.016]. would reduce the complication rate [RR =0.34; 95% CI: (0.22, 0.52); Z=-5.010; P<0.0001], and resulting in less secondary surgery rate [RR =0.34; 95% CI: (0.18, 0.64); Z=-3.363; P=0.001] comparing to silicone prosthesis (SP) material. DISCUSSION: In rhinoplasty, the use of AC material gains more satisfaction, has less total complication rate, and results in less secondary surgery rate than silicone material. But based on the heterogeneity and publication bias in the studies, this topic still needs to be further explored by including more high-quality studies.

Orbital rehabilitation of a COVID-19-induced mucormycotic defect - A case report.

The surgical removal of the maxilla and the orbit and its content, which leads to degraded esthetics, weakened functioning, and arrested psyche, has caused widespread fury among coronavirus disease (COVID-19)-produced mucormycosis patients. It has been stated that a patient with an ocular deformity due to surgical excision of a mucormycosis infection can be rehabilitated. Obtaining a healthy location for prosthesis acceptance is critical for the success of many resected patients. The advantages of anatomical and mechanical retention were fully exploited. The report includes an appropriate treatment plan for the rehabilitation of such faults, as well as a follow-up period and maintenance. Such rehabilitation not only improves the cosmetic outcome but also helps to elevate the patients' spirits mentally. The following case report defines the treatment guidelines for rehabilitation of a patient with orbital and intra-oral defect owing to COVID-19-induced mucormycosis. It also establishes the steps required for the fabrication along with materials required and suitable pertaining to the above-mentioned scenario. The text is duly supported by images wherever necessary.

Rehabilitation of Auricular Defect with Implant-Retained Auricular Prosthesis - A Case Report.

RATIONALE: Maxillofacial defect is of great concern physically, emotionally, and psychologically for a patient. However, it is an even bigger challenge for a team attempting rehabilitation, as a crucial decision has to be made between surgical approach and/or prosthetic rehabilitation. However, if both are combined, it will result in best of esthetics and function with ease of maintainance, resulting in a sucessful rehabilitation. This case report represents a case of auricular defect rehabilitated with a combination of implants and bar-retained silicone prosthesis. PATIENT CONCERN: A 38-year-old male patient with right auricular defect reported with the main concern of esthetic rehabilitation of a lost part of the external ear. DIAGNOSIS: With through evaluation and examination, a diagnosis of acquired partial auricular defect of the right side secondary to trauma was established. TREATMENT: An implant-retained auricular prosthesis was planned for this case. Surgically, three intraoral implants were placed in the mastoid bone, and after healing, bar framework was fabricated and attached. Finally, silicone prosthesis was fabricated and delivered to the patient. OUTCOME: A successful rehabilitation was carried out in this case using implants and bar attachment for retention of the silicone prosthesis. This prosthesis provided excellent retention and restored the appearance and confidence of the patient. TAKE-AWAY LESSONS: Rehabilitation of the auricular defect can be carried out with surgical approach, which involves multiple surgeries, and still, the results may not be esthetically favorable. Prosthetic rehabilitation is an option, but retention is generally a hindrance. However, implant-retained prosthesis has really paved a way for rehabilitation of the maxillofacial defect esthetically and more reliably. Cone-beam computerized tomography (CT) can be used for planning and evaluation instead of CT, which will save the patient from a lot of radiation exposure. Hence, in the maxillofacial defect, attempts should be made to explore the option of implant-retained prosthesis.

Mamoplastia de aumento pela técnica subfascial / Augmentation mammoplasty by subfascial technique

RESUMO Introdução: A técnica de implantação de próteses de silicone subfascial descrita por Graf, em 2003, apresenta vantagens em relação as técnicas submuscular e subglandular. Diferente das técnicas já descritas, a prótese é implantada na aponeurose do músculo peitoral, proporcionando melhores resultados estéticos e menos complicações no período pós-operatório. Objetivos: O presente estudo tem como finalidade descrever o uso do implante mamário no plano subfascial, além de analisar os índices de complicações de pacientes submetidos a este procedimento. Métodos: Estudo retrospectivo através da análise de prontuário eletrônico de 233 pacientes que realizaram mamoplastia de aumento com descolamento subfascial. Foram excluídas as pacientes que realizaram outras técnicas de implantação de próteses, mastopexia e que utilizaram tamanhos diferentes de próteses. Resultados: A maioria das pacientes optou pela incisão realizada no sulco inframamário, o tamanho das próteses sofreu aumento ao longo do período estudado e apenas uma complicação foi relatada no pós-operatório. Conclusão: A técnica subfascial vem sendo cada vez mais utilizada pelos cirurgiões plásticos por apresentar resultados estéticos satisfatórios e baixos índices de complicações, como demostrado no estudo, tornando-se uma opção diferenciada para pacientes que realizarão a mamoplastia de aumento.

ABSTRACT Introduction: The implantation technique of subfascial silicone prostheses described by Graf in 2003 has advantages over submuscular and subglandular techniques. Unlike the techniques already described, the prosthesis is implanted in the aponeurosis of the pectoral muscle, providing better aesthetic results and fewer complications in the postoperative period. Objectives: The present study aims to describe the use of breast implants in the subfascial plane and analyze the rates of complications of patients undergoing this procedure. Methods: A retrospective study by analyzing electronic medical records of 233 patients who underwent augmentation mammoplasty with subfascial detachment. Patients who underwent other implantation techniques of prostheses, mastopexy and who used different sizes of prostheses were excluded. Results: Most patients opted for the incision performed in the inframammary groove; the size of the prostheses increased over the period studied, and only one complication was reported postoperatively. Conclusion: Plastic surgeons have increasingly used the subfascial technique because it presents satisfactory aesthetic results and low rates of complications, as shown in the study, becoming a differentiated option for patients who will perform augmentation mammoplasty.

Double Space Augmentation Mastopexy-A Reflection After 15 Years.

INTRODUCTION: The treatment of breast ptosis using mastopexy associated with the inclusion of a silicone prosthesis in a single surgical procedure is a challenge for surgeons. The aim of this study is to describe the 15-year experience with the placement of silicone breast implants in double, subfascial and submuscular space, in the treatment of patients with breast ptosis, and to analyze the aesthetic results of patients who underwent such surgeries. METHOD: During the 15-year period, between 2005 and 2020, 640 mastopexies were performed with the inclusion of silicone breast implants in double space, with high-profile round polyurethane prostheses whose volumes ranged from 135 to 435 ml, in patients with grade 2 and 3 breast ptosis. RESULTS: The age of the patients ranged from 18 to 55 years and the average age was 34 years. The postoperative follow-up time was 18 months. 400 patients (62.5%) had grade II ptosis, whereas 240 of them (37.5%) had grade III ptosis. The main complications were: 19 cases (3%) of residual sagging skin, 19 cases (3%) of unsightly scars, 12 cases (2%) of partial areola necrosis. There was no case of infection or seroma. There were 330 primary surgeries (52%) and 310 secondary surgeries (48%). CONCLUSION: After 15 years of performing mastopexy with prosthesis in double space, both in primary and secondary surgeries, it can be concluded that the technique reached its maturity providing good long-term results with the maintenance of the projection of the upper pole of the breast and low recurrence of ptosis in the lower pole and low rate of complications. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.

Prosthetic Rehabilitation Technique with an Economical Customized Orbital Prosthesis

@#Post-surgical orbital defects pose a severe effect on patient, psychologically and physically, especially in the eventual return to the society and daily routine. In cases where reconstructive surgery is not possible, prosthetic rehabilitation is crucial in addressing this issue. Implant-supported orbital prosthesis provides superior retention, however, it is not economically acceptable for some cases. Various modes of retention are available to cater to each patient’s diagnosis, treatment need and economical status. This article describes the procedures in the construction of a customized silicone orbital prosthesis using adhesive and spectacles for retention. This technique is cost-effective and simple while providing comfort and satisfaction for the patient.

Recreating first digit with silicone prosthesis.

The hand is an integral part of our body. Any deviation in hand anatomy not only affects the day-to-day function but it even results in unesthetic appearance. Rehabilitation of these deformities is done either by microsurgery or with the help of silicone prosthesis. Nonsurgical treatment was carried out, where rehabilitation of the first digit was done with customized silicone prosthesis. Replacement of these deformities with silicone prosthesis is usually done by prosthetist. However, we being an oral and maxillofacial prosthodontist, replacement of these missing complete or partial fingers, thumb, ear, and nose is also done by prosthodontist. Rehabilitation of these deformities with silicone prosthesis can offer psychological, functional, and esthetic advantages. Recent advances in materials and skill of an individual made it possible to fabricate esthetically pleasing prosthesis. Mini implants are widely used for retaining silicone prosthesis; however, they are expensive and need surgical intervention. Vacuum-retained silicone-retained silicone prosthesis is a good and minimal invasive option for these patients. This clinical report describes a straightforward technique for fabricating silicone thumb prosthesis for a patient with amputated thumb.

Long-term outcomes of silicone metacarpophalangeal arthroplasty: a longitudinal analysis of 325 cases.

An analysis was conducted of 325 consecutive metacarpophalangeal arthroplasties prospectively collected using a single institution's total joints registry over a 14-year time period to characterize long-term radiographic and functional outcomes. Patients were followed for a mean of 7.2 years (2-18) or until revision. The 5-, 10- and 15-year survival free from revision were 98%, 95% and 95%, respectively. The 5-, 10- and 15-year survival rates free from radiographic implant fracture were 93%, 58% and 35%, respectively. The 5-, 10- and 15-year survival rates free from coronal plane deformity greater than 10° were 81%, 37% and 17%, respectively. Patients had significant improvements in their postoperative pain levels and metacarpophalangeal arc of motion. Neither implant fracture, nor coronal plane deformity >10° had a significant association with worse function. Overall, pain relief and functional improvement are reliable, though silicone implants do not protect from progression of coronal plane deformity and have a high fracture rate. Level of evidence: IV.

Nasal reconstruction with silicone using customised impression technique.

Facial defects can result from a variety of reasons including trauma, burns, infections, congenital disorders, and neoplasms which require surgical correction or prosthetic rehabilitation or both. Prosthetic replacement using various materials is the treatment of choice when other surgical options are not possible. This report presents a case of acquired nasal defect secondary to a surgically operated adenoid cystic carcinoma using silicone as the material of choice.

Prosthetic rehabilitation of a partially amputated finger using a customized ring-wire substructure.

Defects of fingers or hands due to congenital reasons or trauma can be a catastrophic setback to an individual physically, emotionally, and psychologically. An artificial finger prosthesis is a lucrative option to camouflage such defects. The anatomy of the residual stump of the defect is of extreme importance and will dictate the mode of retention to be used, and the level of esthetics one can expect. Despite the availability of the advanced skills, best of materials, and laboratory support, sometimes, the anatomy of the defect may be a hindrance in furnishing a better prosthesis. This case report describes a cost-effective and simple approach of rehabilitation of a partially amputated finger with bulbous distal anatomy using a custom-made ring-wire substructure and maxillofacial silicone, thereby striking a balance between adequate retention and optimal esthetics.

Two-Piece Extraoral Prosthetic Rehabilitation to a Perineural Invasion Lip Cancer.

Lip cancers can severely affect a person in terms of function, esthetics, and psychological trauma. After surgical resection, lip defects require special rehabilitation. This clinical report describes a neck prosthesis of a male patient diagnosed with lower lip squamous cell carcinoma with perineural involvement. The neck prosthesis was connected to the mandibular complete denture with cobalt samarium magnets. Both prostheses improved the patient's mastication, deglutition, and esthetics.