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1.
Burns ; 49(2): 365-379, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-35550830

RESUMO

BACKGROUND: The mainstay of non-invasive scar management, consists of pressure therapy with customized pressure garments often combined with inlays, hydration by means of silicones and/or moisturizers as well as UV protection. It is generally accepted that scar dehydration resulting from impaired barrier function of the stratum corneum and expressed by raised trans epidermal water loss (TEWL) values, can lead to increased fibroblast activity and thereby hypertrophic scar formation. However, we have reached no consensus on exactly what optimal scar hydration is nor on barrier function repair: by means of silicone sheets, liquid silicone gels or moisturizers. Occlusive silicone sheets almost completely prevent TEWL and have been shown to be effective. Nevertheless, many important disadvantages due to excessive occlusion such as difficulties in applying the sheets exceeding 10-12 h, pruritus, irritation, and maceration of the skin are limiting factors for its use. To avoid these complications and to facilitate the application, liquid silicone gels were developed. Despite a reduced occlusion, various studies have shown that the effects are comparable to these of the silicone sheets. However, major limiting factors for general use are the long drying time, the shiny aspect after application, and the high cost especially when used for larger scars. Based on excellent clinical results after using three specific moisturizers for scar treatment in our patients, we wanted to investigate whether these moisturizers induce comparable occlusion and hydration compared to both each other and the widely recognized liquid silicone gels. We wanted to provide a more scientific basis for the kind of moisturizers that can be used as a full-fledged and cost-effective alternative to silicone gel. METHODS: A total of 36 healthy volunteers participated in this study. Increased TEWL was created by inducing superficial abrasions by rigorous (20x) skin stripping with Corneofix® adhesive tape in squares of 4 cm². Three moisturizers and a fluid silicone gel were tested: DermaCress, Alhydran, Lipikar and BAP Scar Care silicone gel respectively. TEWL reducing capacities and both absolute (AAH) and cumulative (CAAH) absolute added hydration were assessed using a Tewameter® TM300 and a Corneometer® CM825 at different time points for up to 4 h after application. RESULTS: We found an immediate TEWL increase in all the zones that underwent superficial abrasions by stripping. Controls remained stable over time, relative to the ambient condition. The mean percentage reduction (MPR) in TEWL kept increasing over time with Alhydran and DermaCress, reaching a maximum effect 4 h after application. Silicone gel reached maximal MPR almost immediately after application and only declined thereafter. The silicone gel never reached the minimal MPR of Alhydran or DermaCress. Hydration capacity assessed through CAAH as measured by the Corneometer was significantly less with silicone gel compared to the moisturizers. Compared to silicone gel Lipikar provided similar occlusion and the improvement in hydration was highly significant 4 h after application. CONCLUSION: Based on the results of both our previous research and this study it is clearly demonstrated that the occlusive and hydrative effect of fluid silicone gel is inferior to the moisturizers used in our center. Lipikar hydrates well but is less suitable for scar treatment due to the lack of occlusion. A well-balanced occlusion and hydration, in this study only provided by Alhydran and DermaCress, suggests that moisturizers can be used as a scar hydration therapy that replaces silicone products, is more cost-effective and has a more patient-friendly application.


Assuntos
Queimaduras , Cicatriz Hipertrófica , Humanos , Géis de Silicone/farmacologia , Queimaduras/complicações , Cicatriz Hipertrófica/etiologia , Pele/patologia , Epiderme/patologia , Água/farmacologia
2.
J Plast Reconstr Aesthet Surg ; 74(3): 486-494, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33093011

RESUMO

This study aimed to assess the effectiveness and safety of BellaGel implants after implantation in Asian women and inform surgeons of another option for use in breast augmentation and reconstruction. This study was conducted in eight hospitals from November 27, 2015 to April 30, 2018. All patients underwent augmentation mammoplasty or implant-based breast reconstruction with BellaGel implants. Complication rates were compared between groups, and the cumulative hazard function was compared using the Kaplan-Meier survival analysis. Implants were grouped by surface type, and the cumulative hazard functions of total complication cases were compared. The biomechanical properties of the BellaGel implant and other company representative implants were tested using a mechanical testing machine, and surface topography was analyzed using a 3D laser scanning confocal microscope. There was a significant difference in the incidence of complications between the reconstruction (17.1%) and augmentation (4.7%) groups, but no significant difference in the complication rates of each group. There was no difference in the reoperation or revision rates between the groups. The log rank test showed a statistically significant difference in cumulative hazard function between the groups. Among the three types of implants (smooth, textured, and microtextured), the microtextured type had the lowest complication rate. The BellaGel microtexture implant had the highest maximal tensile load and displacement value. The BellaGel and Silksurface implants had the highest stored energy, although there was no significant difference. BellaGel implants can serve as a criterion for the selection of safe and effective implants among currently available implants.


Assuntos
Implante Mamário , Implantes de Mama , Mamoplastia , Teste de Materiais , Complicações Pós-Operatórias , Géis de Silicone , Adulto , Fenômenos Biomecânicos , Implante Mamário/efeitos adversos , Implante Mamário/instrumentação , Implante Mamário/métodos , Implantes de Mama/efeitos adversos , Implantes de Mama/classificação , Implantes de Mama/estatística & dados numéricos , Estudos de Coortes , Feminino , Humanos , Incidência , Mamoplastia/efeitos adversos , Mamoplastia/instrumentação , Mamoplastia/métodos , Teste de Materiais/métodos , Teste de Materiais/estatística & dados numéricos , Microscopia Confocal/métodos , Pessoa de Meia-Idade , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , República da Coreia/epidemiologia , Estudos Retrospectivos , Géis de Silicone/efeitos adversos , Géis de Silicone/química , Géis de Silicone/farmacologia , Géis de Silicone/normas , Propriedades de Superfície
3.
Aesthetic Plast Surg ; 43(2): 354-365, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30311034

RESUMO

BACKGROUND: Breast implants may be responsible for secondary deformities produced by parenchymal atrophy. However, few studies in the literature have reported changes in breast tissue after augmentation surgery. In this study, the breast thickness of patients undergoing breast augmentation was monitored by ultrasound, and correlations with surface, volume and projection measurements were examined. METHODS: We studied the parenchymal thickness at the lower pole of the breast with ultrasound in 36 women (72 breasts). In another group of 33 patients (66 breasts), we studied the thickness at the upper and lower poles along the meridian of each breast by ultrasound and measured the anthropometric metrics, volume and projection of the breast with a 3D camera. RESULTS: Midline measurements close to the areola showed reduced thickness at the lower pole, with 31.8% at the midpoint of the lower pole and 42% at the infra-areolar level (p < 0.0001). At the upper pole, there was a decrease of 14.6% (p < 0.001), but the thickness was increased by 6% and 38% at more cranial levels. No correlations with volume were found. Anatomical implants produced more atrophy at the lower pole, and round implants at the upper pole. More atrophy was found with subfascial than submuscular augmentation. Compared with the expected values, the final volume was very similar, but the projection was 29% less. Surface measurements changed significantly up to 4 months postoperatively and remained stable thereafter. CONCLUSIONS: Implants affect significatively the thickness of the glandular tissue. All changes occur very soon postoperatively but stabilize after 4 months. 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 .


Assuntos
Implantes de Mama , Glândulas Mamárias Humanas/efeitos dos fármacos , Glândulas Mamárias Humanas/diagnóstico por imagem , Géis de Silicone/farmacologia , Adulto , Feminino , Humanos , Imageamento Tridimensional , Pessoa de Meia-Idade , Desenho de Prótese , Ultrassonografia , Adulto Jovem
4.
Sci Rep ; 8(1): 7422, 2018 05 09.
Artigo em Inglês | MEDLINE | ID: mdl-29743500

RESUMO

Upper lip scars are at risk of hypertrophy. Our center therefore uses microporous tape and silicone sheeting for postoperative scar care following cleft lip repair. However, some babies have previously ingested their silicone sheeting, which has the potential for respiratory compromise or gastrointestinal obstruction. Self-dry silicone gel is reportedly also effective for preventing hypertrophic scars. Hence, we sought to test whether silicone gel, which cannot be ingested whole, might be non-inferior to silicone sheeting for controlling against upper lip scar hypertrophy. This was a mixed prospective and retrospective case-controlled clinical trial involving patients undergoing unilateral cleft lip repair, 29 of whom received standard postoperative silicone sheeting (control group) and another 33 age-matched consecutive patients who received self-dry silicone instead. The Vancouver scar scale, visual analogue scale and photographically assessed scar width assessments were the same in both groups at six months after surgery. In conclusion, silicone gel appears to be non-inferior to silicone sheeting for postoperative care of upper lip scars as judged by scar quality at six months, but silicone sheeting has the safety disadvantage that it can be swallowed whole by babies. It is thus recommended that silicone gel be used for upper lip scar management in babies.


Assuntos
Cicatriz/tratamento farmacológico , Fenda Labial/patologia , Géis de Silicone/farmacologia , Feminino , Humanos , Lactente , Masculino , Resultado do Tratamento
5.
Plast Reconstr Surg ; 137(1): 70-81, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26710009

RESUMO

BACKGROUND: A large, multicenter, 10-year observational study is being conducted to compare the long-term safety and effectiveness of Natrelle silicone breast implants with saline implants or national norms. Study baseline data and surgical characteristics are reported here. METHODS: Women seeking primary augmentation, revision-augmentation, primary reconstruction, or revision-reconstruction participated. Eligible subjects had completed surgery and received one implant or matching implants. Baseline demographics, health, lifestyle, and surgical characteristics were recorded. Data are presented here for subjects (≥22 years old) who underwent primary augmentation or revision-augmentation. RESULTS: Of 50,979 subjects who underwent augmentation procedures, 35,756 received silicone implants and 15,223 received saline implants. Of these, 86.3 percent underwent primary augmentation, and 13.7 percent underwent revision-augmentation; nearly all subjects (99.3 percent) received bilateral implants. In the primary augmentation group, 67.6 percent of subjects received silicone implants versus 86.1 percent in the revision-augmentation group. Median age was lower in the primary augmentation group compared with the revision-augmentation group (33 versus 42 years old, respectively). Most subjects were white nonsmokers and had attended college. Hispanic subjects and subjects with a body mass index of 25 kg/m or greater were more likely to receive saline versus silicone implants. Across groups, the most common characteristics by procedure or implant type included inframammary incision site (54.6 percent), partial (58.2 percent) or complete (31.9 percent) submuscular placement, smooth surface implants (93.1 percent), and implant size of 300 to 399 cc. Incision size was larger for silicone versus saline implants. CONCLUSION: These data add to the body of knowledge on women undergoing augmentation procedures by providing an unprecedented look at a large number of subjects.


Assuntos
Implante Mamário/métodos , Implantes de Mama , Géis de Silicone/farmacologia , Cloreto de Sódio/farmacologia , Adulto , Idoso , Implante Mamário/efeitos adversos , Demografia , Análise de Falha de Equipamento , Feminino , Seguimentos , Humanos , Contratura Capsular em Implantes/epidemiologia , Estilo de Vida , Mamoplastia/métodos , Pessoa de Meia-Idade , Desenho de Prótese , Falha de Prótese , Medição de Risco , Fatores de Tempo , Resultado do Tratamento , Estados Unidos , Adulto Jovem
7.
Aesthet Surg J ; 35(8): 929-35, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26508645

RESUMO

BACKGROUND: Despite being the cosmetic procedure most performed worldwide, there are still few objective measurements of postoperative volumetric analysis of breast augmentation available in the literature. OBJECTIVE: The aim of this study was to evaluate volumetric changes in the breast parenchyma after the placement of silicone implants in the subglandular plane. METHODS: Thirty-four women were randomly allocated to the intervention group (n = 24), who underwent breast augmentation in the subglandular plane, or to the control group (n = 10), who received no intervention. Volumetric magnetic resonance imaging was performed at inclusion, and after 6 and 12 months in all participants. The non-parametric Friedman's test was used for statistical analysis. RESULTS: There was a significant reduction in glandular volume (mean, 22%) at 12 months postoperatively in patients who underwent breast augmentation. CONCLUSIONS: Breast augmentation caused reduction in the volume of the breast parenchyma. LEVEL OF EVIDENCE: 3 Therapeutic.


Assuntos
Implante Mamário/métodos , Implantes de Mama/efeitos adversos , Mama/anatomia & histologia , Géis de Silicone/farmacologia , Adolescente , Adulto , Brasil , Implante Mamário/efeitos adversos , Feminino , Seguimentos , Humanos , Estudos Longitudinais , Imageamento por Ressonância Magnética/métodos , Mamografia/métodos , Tamanho do Órgão/fisiologia , Cuidados Pré-Operatórios/métodos , Estudos Prospectivos , Desenho de Prótese , Falha de Prótese , Valores de Referência , Medição de Risco , Géis de Silicone/efeitos adversos , Fatores de Tempo , Tomografia Computadorizada por Raios X/métodos , Resultado do Tratamento , Adulto Jovem
9.
Aesthetic Plast Surg ; 39(5): 713-23, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26304599

RESUMO

UNLABELLED: Polyurethane breast implants were first introduced by Ashley (Plast Reconstr Surg 45:421-424, 1970), with the intention of trying to reduce the high incidence of capsular contracture associated with smooth shelled, high gel bleed, silicone breast implants. The sterilization of the polyurethane foam in the early days was questionable. More recently, ethylene oxide (ETO)-sterilized polyurethane has been used in the manufacturing process and this has been shown to reduce the incidence of biofilm. The improved method of attachment of polyurethane onto the underlying high cohesive gel, barrier shell layered, silicone breast implants also encourages bio-integration. Polyurethane covered, cohesive gel, silicone implants have also been shown to reduce the incidence of other problems commonly associated with smooth or textured silicone implants, especially with reference to displacement, capsular contracture, seroma, reoperation, biofilm and implant rupture. Since the introduction of the conical polyurethane implant (Silimed, Brazil) into the United Kingdom in 2009 (Eurosurgical, UK), we have had the opportunity to review histology taken from the capsules of polyurethane implants in three women ranging from a few months to over 3 years after implantation. All implants had been inserted into virgin subfascial, extra-pectoral planes. The results add to the important previously described histological findings of Bassetto et al. (Aesthet Plast Surg 34:481-485, 2010). Five distinct layers are identified and reasons for the development of each layer are discussed. Breast capsule around polyurethane implants, in situ for fifteen and 20 years, has recently been obtained and analysed in Brazil, and the histology has been incorporated into this study. After 20 years, the polyurethane is almost undetectable and capsular contracture may appear. These findings contribute to our understanding of polyurethane implant safety, and give reasoning for a significant reduction in clinical capsular contracture rate, up to 10 years after implantation, compared to contemporary silicone implants. A more permanent matrix equivalent to polyurethane may be the solution for reducing long-term capsular contracture. LEVEL OF EVIDENCE V: 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 .


Assuntos
Implante Mamário/métodos , Implantes de Mama , Contratura Capsular em Implantes/parasitologia , Poliuretanos/farmacologia , Géis de Silicone/farmacologia , Adulto , Biópsia por Agulha , Implante Mamário/efeitos adversos , Estudos de Coortes , Remoção de Dispositivo , Medicina Baseada em Evidências , Feminino , Seguimentos , Humanos , Imuno-Histoquímica , Poliuretanos/efeitos adversos , Desenho de Prótese , Falha de Prótese , Reoperação/métodos , Estudos Retrospectivos , Géis de Silicone/efeitos adversos , Resultado do Tratamento , Reino Unido
11.
Aesthetic Plast Surg ; 39(5): 724-32, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26206500

RESUMO

UNLABELLED: Breast implants are frequently used for both cosmetic breast augmentation and breast reconstruction after mastectomy. Three companies currently offer FDA-approved breast implants (Allergan, Mentor, and Sientra), but their product offerings-including permanent breast implants, breast tissue expanders, sizers, and post-operative warranty-can be difficult to compare because of brand names and company-specific jargon. The ability to have a brand-agnostic understanding of all available options is important for both the surgical trainee as well as the surgeon in clinical practice. After a brief review of the history of breast implant devices, this review utilizes a unique conceptual framework based on variables such as fill material, shape, relative dimensions, and surface coating to facilitate a better understanding of the similarities and differences between the different company's offerings. Specifically, we identify which types of devices are offered by all three companies, those that are offered by only one company, those that have very limited product offerings, and those combinations that are not available at all. Finally, clinical implications are drawn from this framework that can be used by both cosmetic and reconstructive surgeons to counsel patients about all available options. Importantly, this project is entirely independent of any company's funding, support, or input. LEVEL OF EVIDENCE V: 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 .


Assuntos
Implantes de Mama , Comércio , Aprovação de Equipamentos/normas , Desenho de Prótese , Medicina Baseada em Evidências , Feminino , Humanos , Falha de Prótese , Géis de Silicone/farmacologia , Cloreto de Sódio/farmacologia , Dispositivos para Expansão de Tecidos/normas , Estados Unidos , United States Food and Drug Administration
12.
Aesthet Surg J ; 35(8): 952-61, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26104477

RESUMO

BACKGROUND: At its inception, transaxillary breast augmentation was a blind technique associated with complications and unpredictable outcomes. The transaxillary approach now involves electrocautery dissection with direct endoscopic visualization and yields excellent aesthetic outcomes with a concealed scar. Shaped implant devices can be combined with transaxillary augmentation for natural-appearing results that can be individualized to the patient. OBJECTIVES: The authors sought to improve the results of transaxillary endoscopic breast augmentation by placing shaped gel implants in patients with an indistinct or absent inframammary fold (IMF), who wished to avoid a breast scar. METHODS: One hundred sixteen Asian women underwent transaxillary endoscopic breast augmentation with electrocautery dissection and were evaluated in a prospective study. A partial retropectoral plane pocket was created in 4 sequential dissection steps with direct endoscopic visualization and careful control of bleeding. Shaped cohesive gel implants were placed to produce smooth, natural-appearing breast mounds and well-defined IMFs. RESULTS: Patients were monitored for 6 to 24 months after surgery (mean, 10 months; median, 12 months). There were no instances of pneumothorax, instrument-related skin burns, or severe implant deformation due to rotation or displacement of the implants postoperatively. Three of 116 patients (2.6%) experienced Baker 3 unilateral capsular contracture. One patient developed a unilateral hematoma at 3 weeks after surgery. CONCLUSIONS: Endoscopic breast surgery is associated with shortened recovery times, a reduced need for drainage, and excellent outcomes, including a well-defined and symmetric IMF. This approach, combined with shaped gel implants, can yield natural-appearing results of transaxillary breast augmentation. LEVEL OF EVIDENCE: 4 Therapeutic.


Assuntos
Axila/cirurgia , Implante Mamário/métodos , Implantes de Mama , Endoscopia/métodos , Géis de Silicone/farmacologia , Adulto , Povo Asiático/estatística & dados numéricos , Implante Mamário/efeitos adversos , Estudos de Coortes , Endoscopia/efeitos adversos , Estética , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Minimamente Invasivos/efeitos adversos , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Estudos Prospectivos , Falha de Prótese , Medição de Risco , Resultado do Tratamento , Adulto Jovem
13.
Rev. bras. cir. plást ; 30(3): 423-428, 2015. ilus
Artigo em Inglês, Português | LILACS | ID: biblio-1151

RESUMO

INTRODUÇÃO: As sequelas de mastectomia se apresentam de formas variadas exigindo, do cirurgião, experiência e criatividade para obter o melhor resultado na reconstrução de uma nova mama. Dentre as dificuldades para que este objetivo seja alcançado, está o desafio de um melhor preenchimento do polo superior da mama. O objetivo deste trabalho é apresentar uma opção terapêutica alternativa para correção do polo superior dentre as técnicas já existentes com este propósito. MÉTODO: A técnica cirúrgica utilizou o retalho de músculo grande dorsal com extensão gordurosa para preenchimento do polo superior da neomama durante sua reconstrução. A técnica descrita foi utilizada em 8 pacientes durante a reconstrução mamária tardia, com idades variando entre 39 e 70 anos. O tamanho desta extensão gordurosa variou entre 4,0 × 10,0 e 7,0 × 13,0 cm. O componente gorduroso do retalho foi avaliado após 3 meses através de ressonância magnética. RESULTADOS: Foram usados implantes mamários que variavam entre 270 e 435 ml. O acompanhamento pós operatório variou entre 3 meses a 1 ano. Ocorreram 2 casos de epidermólise (28%) na junção do retalho cutâneo com a área receptora. Não houve perda ou sofrimento do retalho. Os resultados demonstram clinicamente ou visualmente que a correção da depressão do polo superior da neomama foi alcançada adequadamente, bem como a viabilidade do retalho gorduroso, observada nos exames de imagem (ressonância magnética). CONCLUSÃO: A técnica proposta é uma alternativa adequada para o tratamento da maioria dos casos de reconstrução mamária em que se busca o preenchimento da depressão existente no polo superior da mama.


INTRODUCTION: The sequelae of mastectomy presents in numerous ways, requiring the experience and creativity of the surgeon to achieve the best result in the reconstruction of a new breast. One of the difficulties in achieving this objective is the challenge of adequately filling the upper pole of the breast. The objective of this work was to present an alternative therapeutic option for correction of the upper pole of the neobreast. METHODS: In our surgical technique, a latissimus dorsi muscle flap with fat extension is used for filling the upper pole of the neobreast during its reconstruction. The described technique was used in 8 patients during late breast reconstruction. The patients' ages ranged from 39 and 70 years. The size of the fat extension ranged from 4.0 × 10.0 cm to 7.0 × 13.0 cm. The fat component of the flap was evaluated after 3 months by using magnetic resonance imaging (MRI). RESULTS: Breast implants that varied in volume between 270 and 435 mL were used. The follow-up period after surgery ranged from 3 months to 1 year. Two patients had epidermolysis (28%) at the junction of the cutaneous flap and the receiver area. No graft loss or other complications occurred. Our results demonstrate clinically or visually that correction of the depression in the upper pole of the neobreast was satisfactorily achieved. The viability of the fat flap, as observed on MRI, was adequate. CONCLUSION: The proposed technique is a suitable alternative method for filling the depression in the upper pole of the neobreast in most cases of breast reconstruction.


Assuntos
Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , História do Século XXI , Radioterapia , Mama , Tecido Adiposo , Mamoplastia , Implantes de Mama , Procedimentos de Cirurgia Plástica , Géis de Silicone , Glândulas Mamárias Humanas , Gorduras , Músculos Superficiais do Dorso , Retalho Miocutâneo , Radioterapia/efeitos adversos , Radioterapia/métodos , Mama/cirurgia , Tecido Adiposo/cirurgia , Mamoplastia/efeitos adversos , Mamoplastia/métodos , Implantes de Mama/efeitos adversos , Procedimentos de Cirurgia Plástica/métodos , Géis de Silicone/uso terapêutico , Géis de Silicone/farmacologia , Estudo de Avaliação , Glândulas Mamárias Humanas/cirurgia , Gorduras/uso terapêutico , Músculos Superficiais do Dorso/cirurgia , Retalho Miocutâneo/cirurgia , Retalho Miocutâneo/efeitos adversos
14.
J Korean Med Sci ; 29 Suppl 3: S249-53, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25473216

RESUMO

To date, few studies have compared the effectiveness of topical silicone gels versus that of silicone gel sheets in preventing scars. In this prospective study, we compared the efficacy and the convenience of use of the 2 products. We enrolled 30 patients who had undergone a surgical procedure 2 weeks to 3 months before joining the study. These participants were randomly assigned to 2 treatment arms: one for treatment with a silicone gel sheet, and the other for treatment with a topical silicone gel. Vancouver Scar Scale (VSS) scores were obtained for all patients; in addition, participants completed scoring patient questionnaires 1 and 3 months after treatment onset. Our results reveal not only that no significant difference in efficacy exists between the 2 products but also that topical silicone gels are more convenient to use. While previous studies have advocated for silicone gel sheets as first-line therapies in postoperative scar management, we maintain that similar effects can be expected with topical silicone gel. The authors recommend that, when clinicians have a choice of silicone-based products for scar prevention, they should focus on each patient's scar location, lifestyle, and willingness to undergo scar prevention treatment.


Assuntos
Cicatriz/prevenção & controle , Géis de Silicone/administração & dosagem , Géis de Silicone/farmacologia , Cirurgia Plástica/métodos , Procedimentos Cirúrgicos Operatórios/efeitos adversos , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Estudos Prospectivos , Distribuição Aleatória , Inquéritos e Questionários , Ferimentos e Lesões/terapia , Adulto Jovem
15.
Aesthetic Plast Surg ; 37(6): 1176-81, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24091488

RESUMO

BACKGROUND: In Asians, facial scars, even fine surgical scars, often can be conspicuous and uncomfortable. The authors used a topical silicone gel containing vitamin C on facial scars for the purpose of making the scar less distinct. METHODS: The study enrolled 80 patients. For the experimental group, the topical silicone gel mixture containing vitamin C was applied from the time of stitch removal to 6 months after the operation. The control group did not undergo any adjunctive treatment. Each participant was evaluated using the modified Vancouver Scar Scale (VSS) as well as erythema and melanin indices by spectrophotometer. RESULTS: With the modified VSS, the experimental group showed a significant decrease in scar elevation (p = 0.026) and erythema (p = 0.025). The hypo- or hyperpigmentation of the scars was more normalized in the experimental group. In the measured results via spectrophotometer, the experimental group showed a significant decrease in the melanin index (p = 0.045). The erythema index showed a statistically significant difference between the time of stitch removal and 6 months after the operation in the experiment group only. CONCLUSIONS: Topical use of silicone gel containing vitamin C has the effect of improving the appearance of fine surgical scars in Asian facial skin. 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 .


Assuntos
Ácido Ascórbico/administração & dosagem , Cicatriz/tratamento farmacológico , Cicatriz/etnologia , Traumatismos Faciais/cirurgia , Géis de Silicone/administração & dosagem , Administração Tópica , Adulto , Ácido Ascórbico/farmacologia , Povo Asiático/estatística & dados numéricos , Estudos de Coortes , Combinação de Medicamentos , Estética , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Géis de Silicone/farmacologia , Resultado do Tratamento , Cicatrização/efeitos dos fármacos , Adulto Jovem
16.
J Burn Care Res ; 34(5): 569-75, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23816994

RESUMO

Special emphasis is placed on the clinical management of facial scarring because of the profound physical and psychological impact of facial burns. Noninvasive methods of facial scar management include pressure therapy, silicone, massage, and facial exercises. Early implementation of these scar management techniques after a burn injury is typically accepted as standard burn rehabilitation practice, however, little data exist to support this practice. This study evaluated the timing of common noninvasive scar management interventions after facial skin grafting in children and the impact on outcome, as measured by scar assessment and need for facial reconstructive surgery. A retrospective review of 138 patients who underwent excision and grafting of the face and subsequent noninvasive scar management during a 10-year time frame was conducted. Regression analyses were used to show that earlier application of silicone was significantly related to lower Modified Vancouver Scar Scale scores, specifically in the subscales of vascularity and pigmentation. Early use of pressure therapy and implementation of facial exercises were also related to lower Modified Vancouver Scar Scale vascularity scores. No relationship was found between timing of the interventions and facial reconstructive outcome. Early use of silicone, pressure therapy, and exercise may improve scar outcome and accelerate time to scar maturity.


Assuntos
Queimaduras/reabilitação , Cicatriz/reabilitação , Traumatismos Faciais/reabilitação , Massagem/métodos , Adolescente , Queimaduras/diagnóstico , Queimaduras/cirurgia , Criança , Pré-Escolar , Estudos de Coortes , Estética , Terapia por Exercício/métodos , Traumatismos Faciais/diagnóstico , Feminino , Seguimentos , Humanos , Escala de Gravidade do Ferimento , Masculino , Procedimentos de Cirurgia Plástica/métodos , Procedimentos de Cirurgia Plástica/reabilitação , Estudos Retrospectivos , Medição de Risco , Géis de Silicone/farmacologia , Transplante de Pele/métodos , Transplante de Pele/reabilitação , Resultado do Tratamento
17.
Plast Reconstr Surg ; 130(4): 793-800, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22691845

RESUMO

BACKGROUND: Capsular contracture has multiple causes, all of which lead to increased inflammation and scarring. There have been five generations of silicone breast implants; the most recent are filled with a highly cohesive gel thought to reduce capsular contracture. No independent data exist to support this claim. METHODS: Eight Göttingen swine were each implanted with eight 50-cc custom gel implants. In phase 1 of the study, the implant shells were photochemically altered to produce a low-bleed shell or a high-bleed shell to simulate a second-generation implant. In phase 2, both the third/fourth generation and the newest, fifth generation (highly cohesive gel) devices were implanted. Half the implants were punctured with a 3-ml punch biopsy to simulate a ruptured implant. Capsule and implant specimens were harvested at 1 and 3 months and analyzed with a Bose strain gauge. Intracapsular fluid was tested for silicon levels with atomic emission spectrometry. Histologic analysis was prepared with hematoxylin and eosin, Masson trichrome, and α-smooth muscle actin immunohistochemistry stains. RESULTS: Gel bleed correlated with capsule stiffness in a dose-dependent manner (p < 0.05). High-bleed second-generation implants had the stiffest capsules, and nonruptured third- and fourth-generation implants had the softest. Histologic examination revealed an intermediate layer of spindle-like cells staining positive for α-smooth actin in the most contracted capsules. CONCLUSIONS: There is a dose-dependant relationship between silicone gel bleed and capsule compliance that is independent of the cohesivity of the silicone. Capsule thickness and a fibrotic, α-smooth muscle actin-positive layer are present within the most contracted capsules.


Assuntos
Implante Mamário/efeitos adversos , Implantes de Mama/efeitos adversos , Falha de Prótese , Géis de Silicone/efeitos adversos , Animais , Implante Mamário/métodos , Contratura/etiologia , Contratura/fisiopatologia , Modelos Animais de Doenças , Feminino , Desenho de Prótese , Distribuição Aleatória , Fatores de Risco , Ruptura Espontânea/etiologia , Ruptura Espontânea/fisiopatologia , Sensibilidade e Especificidade , Géis de Silicone/farmacologia , Sus scrofa , Suínos
19.
Ophthalmic Plast Reconstr Surg ; 26(5): 379-81, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20683275

RESUMO

Recently, silicone prostheses have been used instead of acrylic ocular prostheses. The authors sought to assess the ability of silicone gel to facilitate the growth of an ocular silicone prosthesis and to determine the best application modality to achieve maximal possible growth. Two ocular prostheses with similar baseline dimensions and contour were used for comparison of growth environment. One prosthesis was placed in an eyelid mold, while the other was placed in an open Petri dish. Silicone gel drops (MED-361; NuSil Technology, Carpinteria, CA, USA) were administered 3 times daily to both prostheses. Over the course of 41 days, an equal amount of enlargement occurred in all dimensions in both prostheses. Enlargement of a silicone prosthesis can be achieved by various modes of application of topical silicone gel.


Assuntos
Olho Artificial , Elastômeros de Silicone/química , Géis de Silicone/farmacologia , Óleos de Silicone/farmacologia , Humanos , Estudos Prospectivos
20.
Wound Repair Regen ; 18(2): 235-44, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20419876

RESUMO

Hypertrophic scars are a major clinical problem, yet there are few therapeutics available to prevent or treat scar formation. One of the oldest known and most effective treatments is occlusion with silicone gel. However, little is known about its mode of action. It is hypothesized that occlusion increases the hydration state of the epidermis, and that this affects the epidermal and dermal cell behavior. This study investigated this possibility. Using the rabbit hypertrophic scar model, we determined that occlusion increased the hydration state of the epidermis in a dose-dependent manner, and significantly reduced the scar hypertrophy. Quantitative reverse transcription-polymerase chain reaction and immunohistochemistry showed that occlusion altered keratinocyte behavior, including keratin expression. Furthermore, occlusion significantly decreased the epidermal expression of the profibrotic cytokine interleukin-1beta and increased the epidermal expression of the antifibrotic cytokine tumor necrosis factor alpha. These alterations in the epidermal gene expression resulted in concomitant changes in the expression of the transforming growth factor-beta family members by cells in the dermis, resulting in a decrease in profibrotic signaling within the dermis. In summary, the results of this study indicate that occlusive therapy was able to decrease dermal fibrosis by hydrating the epidermis and altering the pro- and antifibrotic signals produced following injury.


Assuntos
Cicatriz Hipertrófica/terapia , Interleucina-1beta/metabolismo , Géis de Silicone/farmacologia , Fator de Necrose Tumoral alfa/metabolismo , Animais , Cicatriz Hipertrófica/metabolismo , Epiderme/metabolismo , Feminino , Imuno-Histoquímica , Queratina-10/metabolismo , Queratina-5/metabolismo , Queratinócitos/metabolismo , Modelos Animais , RNA Mensageiro/metabolismo , Coelhos , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Proteína Smad3/genética , Proteína Smad3/metabolismo , Proteína Smad7/genética , Proteína Smad7/metabolismo , Fator de Necrose Tumoral alfa/genética
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