Segmental resection vs. partial resection on treating solid multicystic ameloblastomas of the jaws - recurrence rates: A systematic review and meta-analysis.

Background: The aim of the present study was to compare the recurrence rates of solid multicystic ameloblastomas after segmental resection or marginal resection. Material and Methods: PubMed, ScienceDirect, Web of Science, Scopus, Embase were searched for studies published up to July 2022. The gray literature was also searched. Meta-analysis was performed using OpenMeta Software, p< 0.05 considered significant. Results: Among the search, 8 studies met all eligibility criteria. The group that underwent marginal resection was 1.1 times more likely to present recurrence of the lesion compared to the group that underwent segmental resection. There was no statistically significant difference between the two groups (segmental resection and marginal resection) in all eight studies regarding reducing ND (95% Confidence interval, 0.339 - 3.705; heterogeneity: Q value= 3.105; I2= 0%). Conclusions: The results showed that there was no statistically significant difference between segmental and marginal resection for the treatment of solid multicystic ameloblastomas; however, prospective studies with more rigorous methodological procedures are needed to better compare the surgical techniques. Key words:Ameloblastoma, solid multicystic ameloblastoma, treatment, recurrence.

Antiviral and antibacterial activity of sodium alginate/poly(diallyldimethylammonium chloride) polyelectrolyte film for packaging applications.

Pathogen agents, such as bacteria and virus, can contaminate plastic surfaces, particularly those used in food packaging. This study proposed to prepare a polyelectrolyte film with antiviral and antibacterial activity based on sodium alginate (SA) and poly(diallyldimethylammonium chloride) (PDADMAC), a cationic polymer with sanitizing properties. In addition, the physicochemical properties of the polyelectrolyte films were also evaluated. The polyelectrolyte films showed continuous, compact, and crack-free structures. The FTIR analysis confirmed the ionic interaction between SA and PDADMAC. Adding PDADMAC significantly affected the mechanical properties of the films (p < 0.05), increasing the maximum tensile strength (from 8.66 ± 1.55 MPa to 18.1 ± 1.77 MPa). However, polyelectrolyte films showed higher water vapor permeability values due to the strong hydrophilicity of PDADMAC, representing a 43 % average increase compared with the control film. Also, thermal stability improved with the incorporation of PDADMAC. The selected polyelectrolyte film inactivated 99.8 % of SARS-CoV-2 after 1 min in direct contact with the virus, in addition to having an inhibitory effect against Staphylococcus aureus and Escherichia coli bacteria. Therefore, this study demonstrated the efficacy of using PDADMAC in the preparation of polyelectrolyte sodium alginate-based films with improvements in physicochemical properties and especially with antiviral activity against SARS-CoV-2.

Correção de Hiperplasia Hemimandibular com cirurgia de estágio único e uso de prototipagem: relato de caso / Correction of Hemimandibular Hyperplasia with single-stage surgery and use of prototyping: Case Report

Introdução:O tratamento da assimetria facial causada pela hiperplasia hemimandibularvemsendodebatidohádécadase, ainda assim,existem algumas controvérsias quanto aomelhor manejo dessacondição. Relato de caso:Revisão de literatura acerca das abordagens cirúrgicas descritas, e, apresentação de caso clínico de uma pacientecomassimetriafacial. Foram realizadas a cirurgiadepredictibil idadenoarticuladorsemi-ajustáveleprototipagem dos maxilares feita a partir de tomografia computadorizada. A paciente foi submetida a cirurgia ortognática com nivelamento da basilar mandibular e condilectomia no mesmo tempo cirúrgico. Considerações finais:Após acompanhamento por 48 meses, a paciente não apresenta recidiva e segue com a oclusão estável. Segue, também, sem dor nas articulações temporomandibulares. Dessaforma, foi alcançado um aspecto mais harmonioso da face, uma vez que a paciente se queixava de que a assimetria causava transtornos sociais a ela... (AU)

Introduction: The treatment of facial asymmetry caused by hemimandibular hyperplasia has been debated for decades and, even so, there are some controversies regarding the best management of this condition. Case report: Literature review about the surgical approaches described, and presentation of a clinical case of a patient with facial asymmetry. Predictability surgery was performed on the semi-adjustable articulator and prototyping of the jaws using computed tomography. The patient underwent orthognathic surgery with leveling of the mandibular basilar and condylectomy at the same surgical time. Final considerations: After 48 months of follow-up, the patient has no recurrence and continues with stable occlusion. There is also no pain in the temporomandibular joints. In this way, a more harmonious aspect of the face was achieved, since the patient complained that the asymmetry caused social disorders to her... (AU)

Metastasis of Renal Cell Carcinoma Causing Significant Facial Asymmetry.

The occurrence of metastatic tumors in the orofacial region is rare and may represent the first clinical manifestation of occult malignant disease. An orofacial lesion diagnosed as a metastatic tumor from a renal cell carcinoma in a 68-year-old man is reported. This metastatic tumor caused significant facial asymmetry involving the parotid gland and mandible regions, and the patient died four months after diagnosis. Here, we discuss the clinical aspects, the diagnostic approach, and the importance of early diagnosis to obtain a better response to treatment and provide longer survival time.

Dystrophic calcification vs sialolithiasis in a pediactric parotid gland: A case report.

Calcinosis is a connective tissue disorder characterized by ectopic calcification in soft tissues. It is subdivided into: dystrophic, metastatic, idiopathic and iatrogenic calcification. The formation of mineralized material in the salivary glands is a common finding in the daily practice of dentists and other specialists. In most cases, this calcification is a sialolith. However, a type of ectopic calcification termed dystrophic calcification is characterized by inappropriate biomineralization in soft tissues and may be associated with trauma, chronic and localized infection or inflammatory diseases. We report a case of a 9-year-old female patient who complained of small nodules in the left parotid region, which begun two years before. Her main complaint was of recurring periods of worsened symptoms characterized by the exacerbation and symptomatic remission of the gland volume with occasional otolaryngologic infections. This study aims to discuss ectopic dystrophic calcification in the parotid gland associated with recurrent infection in children. Key words:Dystrophic calcification, salivary gland, pediatric pathology.

Reconstruction and Mandibular Rehabilitation After Resection of Juvenile Aggressive Ossifying Fibroma Using Undifferentiated Mesenchymal Cells and Osseointegrated Implants: A Case Report.

PURPOSE: The aggressive juvenile ossifying fibroma is a benign fibro-osseous neoplasm that affects the jaws of young patients. The treatment can range from careful curettage to complete bone resection. Early dental rehabilitation through osseointegrated implants is indicated for functional recovery and esthetics. MATERIALS AND METHODS: This article reports the case of a 20-year-old man submitted to osseous resection, installation of a titanium plate associated with bone graft and osteogenic substances with subsequent installation of osseointegrated dental implants. RESULTS: After 28 months of clinical and radiographic follow-up, there were no signs of tumor recurrence. As the patient showed good graft integration, 3 dental implants could be installed and are now waiting to receive a prosthetic work. CONCLUSIONS: The use of a graft with morphogenetic proteins proved to be stable and efficient as it allowed the rehabilitation with dental implants.

Tissue expander capsule for abdominal wall in autologous breast reconstruction.

SUMMARY: Adjuvant treatment planning can change after breast cancer resection and definitive pathological examination. Radiation therapy is often chosen as a supplementary treatment. Rectus abdominis-based muscle flaps are one of the main choices when breast reconstruction plans must be changed from implant-based to autologous methods. We herein report a case in which the patient's own tissue expander capsule was used to repair an abdominal wall defect after muscle-sparing transverse rectus abdominis myocutaneous flap reconstruction.

Reconstrução da mama utilizando retalhos perfurantes: uso do DIEAP flap no Serviço de Cirurgia Plástica e Microcirurgia da Universidade Federal de Ciências da Saúde de Porto Alegre e da Irmandade Santa Casa de Misericórdia de Porto Alegre / Breast reconstruction with perforator flaps: use of the DIEAP flap at the Plastic Surgery and Microsurgery Service of Universidade Federal de Ciências da Saúde de Porto Alegre and Santa Casa de Misericórdia de Porto Alegre

INTRODUÇÃO: Uma grande evolução ocorreu desde o primeiro registro de transferência de tecido abdominal para reconstrução de mama pós-mastectomia. O retalho baseado em vasos perfurantes da artéria epigástrica inferior (DIEAP flap) apresenta-se com um dos mais recentes desenvolvimentos da área. MÉTODOS: Este artigo analisa fatos importantes na área de reconstrução autóloga da mama utilizando retalhos baseados no abdome, com ênfase nos retalhos microcirúrgicos vascularizados por pedículos perfurantes. RESULTADOS: Na experiência inicial do serviço, pudemos verificar que o retalho se comportou de acordo com a experiência relatada na literatura. CONCLUSÃO: O DIEAP flap apresenta uma possibilidade maior de escultura e ganho volumétrico na mama reconstruída, além de evolução pós-operatória muito positiva.

INTRODUCTION: Great advances have been reported since the first abdominal tissue transfer carried out for breast reconstruction after a mastectomy. The deep inferior epigastric artery perforator (DIEAP) flap is one of the most recent advances in this area. METHODS: In this article, we evaluate the important aspects in the field of autologous breast reconstruction with abdominal-based flaps, with emphasis on microsurgical flaps vascularized by perforating pedicles. RESULTS: During the initial experience of this procedure, we were able to verify that the flap behaved according to what was reported in the literature. CONCLUSION: The DIEAP flap provides a great degree of sculpting and volumetric gain to the reconstructed breast besides allowing a positive postoperative course for the patient.

Ritidoplastia videoassistida do terço inferior da face: corset videoendoscópico / Endoscopically assisted rhytidoplasty of the lower third of the face: the videoendoscopic corset

INTRODUÇÃO: Após um período em que a controvérsia em cirurgias faciais teve como foco a abordagem ao SMAS, atualmente se persegue a melhora do contorno cervical. Descolamentos maiores, como os praticados pelo acesso submentoniano, podem aprimorar os resultados, entretanto acarretam aumento das complicações, sobretudo de hematomas, desencorajando seu emprego. No intuito de minimizar estes riscos, propõe-se o uso adjuvante do videoendoscópio durante a realização de cervicoplastias, segundo a Técnica de Feldman. As adaptações necessárias para a realização do procedimento são detalhadas. MÉTODO: Estudo retrospectivo de 16 pacientes submetidos a procedimento cirúrgico nos últimos 12 meses, sequencialmente, de acordo com a técnica apresentada. Os resultados foram graduados pelo autor principal (RR) e por três cirurgiões plásticos independentes (EC, RN, AM), sem que estes conhecessem detalhes da técnica empregada. Os fotogramas pré e pós-operatórios de seis meses foram avaliados e pontuados conforme os parâmetros definidos por Ellenbogen & Karlin, gerando notas 'de 0 a 10', que foram aplicadas à Grade de Labbé. RESULTADOS: A média geral do grupo foi 8,29, escore ótimo, segundo a Escala de Labbé. Em dez casos (62,5%), atingiu-se resultado ótimo (8-10 pontos); cinco casos (31,25%), bom (6-7 pontos), e apenas um caso (6,25%), escore abaixo de 6 pontos, classificado como mediano. Não houve ocorrência de hematomas, aderências cutâneas ou recidiva das bandas platismais. CONCLUSÃO: A técnica apresentada parece propiciar resultados adequados, sem aumento das complicações. Adicionalmente, possibilita uma cicatriz submentoniana de menor extensão, além da visualização magnificada e direta de todas as estruturas abordadas, por todos os membros da equipe.

INTRODUCTION: In contemporary facial surgery, the focus of controversy has shifted from superficial muscular aponeurotic system approaches, to methods by which to improve the neck contour. Larger detachments, such as those resulting from the use of submental access, can provide better outcomes. However, the associated potential for increased complication rates, particularly hematomas, discourages the practice of such detachments. In order to minimize these risks, we propose the use of videoendoscopic assistance during cervicoplasty procedures, such as Feldman's method. The adjustments required to carry out this procedure are described in this study. METHOD: This retrospective study included 16 patients, who were sequentially submitted to a surgical procedure in the preceding 12 months, using the technique described above. The results were scored by the main author (RR) and 3 independent plastics surgeons (EC, RN, AM), who were unaware of the details of the technique used. Preoperative and 6-month postoperative photographs were evaluated and scored according to the parameters defined by Ellenbogen and Karlin, with values ranging from 0-10 subsequently applied to the grading system of Labbé. RESULTS: The group average postoperative score was 8.29, the optimal grade according to the scale of Labbé. An optimal outcome (8-10 points) was reached in 10 cases (62.5%); a good outcome (6-7 points) was reached in 5 cases (31.25%); a score below 6, rated as average, occurred in only one case (6.25%). There was no occurrence of hematomas, skin adhesions or recurrent platysmal bands. CONCLUSION: The proposed technique appears to provide satisfactory results without increasing the rate of complications. Moreover, use of the technique was associated with less extended submental scar, in addition to improving the direct view of the structures manipulated for all members of the surgical team.

Rehabilitation with dental implants in microvascular iliac graft after solid ameloblastoma resection: a case report.

PURPOSE: Ameloblastoma is a true odontogenic tumor that is most frequently found in clinical practice. Osseous resection with clear margins is the recommended treatment followed by bone reconstruction, such as a vascularized graft. The use of osseointegrated dental implants for rehabilitation is advisable, as it allows the recovery of the masticatory function. MATERIALS AND METHODS: This case report includes 1 subject, a patient who presented with a large ameloblastoma treated by resection, a microvascular iliac graft, and dental implants. RESULTS: After 6 months of regular control, the patient exhibited perfect healing of both the soft tissues and bone graft. At the time of this report, the patient had undergone 36 months of clinical and radiographic follow-up and had not exhibited any sign of osseous loss, implant mobility, or tumor recurrence. CONCLUSIONS: The outcome of this case indicates that a microvascular graft and subsequent dental implantation is a good treatment plan that aids in a quick functional rehabilitation in ameloblastoma patients.

An unusual dentigerous cyst in a young child.

A dentigerous cyst is an odontogenic developmental cyst associated with the crown of an unerupted tooth. This article describes the case of a 7-year-old girl with painful swelling in the left facial region, prolonged retention of tooth No. 9d, and a displaced tooth No. 9 in eruption. Radiographic examination revealed an extensive radiolucent lesion of approximately 28 mm and displacement of teeth No. 10 and 11. Marsupialization was performed, teeth No. 8d and 9d were removed, and the swelling reduced immediately. At a 2-year follow-up, radiographs revealed that teeth No. 10 and 11 had erupted but were displaced. Routine radiographic examinations are important for children during the eruption phase to prevent and detect any alterations that could damage the permanent dentition and occlusion.

Reconstrução e reabilitação de mandíbula severamente atrófica com enxerto da crista do osso ilíaco e implantes osseointegrados: acompanhamento clínico e radiográfico de 36 meses / Reconstruction and rehabilitation of severely atrophic mandible with iliac crest bone graft and osseointegrated implants: a clinical and radiological 36-month follow-up

O objetivo deste trabalho foi relatar um caso no qual foi realizado enxerto onlay de crista ilíaca em uma mandíbula severamente atrófica, visando ganho de altura para futura instalação de implantes, já que a paciente não conseguia fazer uso de prótese total. Através de um acesso do tipo cervicotomia alta, foi feita a exposição de toda a região anterior da mandíbula. O bloco de osso removido da crista ilíaca anterior direita foi dividido em seis blocos menores, modelado e adaptado para servir de enxerto aposicional tanto sobre a porção superior quanto inferior da mandíbula, entre forâmenes mentonianos. O uso sobre as duas corticais foi devido à extrema atrofia do rebordo alveolar. Após quatro meses, a paciente apresentava excelente integração do enxerto. Foi realizada, então, a instalação de cinco implantes para suportar uma prótese total fixa, do tipo protocolo, confeccionada cinco meses após a colocação dos implantes. A paciente encontra-se em acompanhamento clínico e radiográfico há 36 meses, sem sinais clínicos/radiográficos de mobilidade dos implantes e boa adaptação da prótese.

The aim of this study was to report a case where a free onlay, iliac crest graft was made in an extremely atrophic mandible to gain height for further implant placement, since the patient could not cope with her conventional denture. First, the anterior mandibular region was surgically exposed and later a bone block was removed from the right iliac crest being divided into six smaller pieces, shaped and adapted between the mental foramina at the lower and upper regions. The use of both cortices was due to extreme alveolar ridge atrophic nature. After four months, the patient presented with excellent graft incorporation. Then, five dental implants were placed and a fixed complete prosthesis was fabricated five months later. According to the last clinical and radiographic follow-ups, no implant loss or loosening was seen after 36 months and the prosthesis demonstrates good marginal fit.

Otimização da marcação da incisão na dermolipectomia abdominal com emprego de molde padronizado / Optimization of incision marking in abdominoplasty using a standardized template", "_e": "n

A marcação pré-operatória da incisão na dermolipectomia abdominal tem papel fundamental na forma e no posicionamento da cicatriz resultante. Além da marcação, o descolamento, a tração e a ressecção dos tecidos excedentes também contribuem para esse desfecho. Após observação e análise estatística de 36 abdominoplastias, foi desenvolvido um molde de marcação pré-operatória que reproduz a forma das incisões consideradas adequadas do ponto de vista estético. A forma de incisão considerada adequada apresenta 3 segmentos de reta: um central, de 11 ± 0,4 cm, e 2 laterais angulados em 155 graus, com 16,5 ± 2,3 cm. O molde consegue reproduzir a forma das incisões consideradas adequadas de modo rápido, barato e reprodutível.

Preoperative marking of the incision in abdominoplasty plays a key role in the shape and position of the resulting scar. The undermining, traction, and resection of redundant tissue also influence these outcomes. After observation and statistical analysis of 36 abdominoplasty procedures, a preoperative marking template, which reproduces the incision shape that is considered the most suitable from an aesthetic point of view, was developed. The most suitable incision shape has 3 line segments: one central segment that is 11 cm ± 0.4 cm in length and 2 lateral segments that are 16.5 ± 2.3 cm in length at an angle of 155°. The template provides a quick, inexpensive, and consistent technique for reliably reproducing the suitable incision shape.

Health outcomes in decompensated congestive heart failure: a comparison of tertiary hospitals in Brazil and United States.

BACKGROUND: Few international studies prospectively compared evidence-based practices and health outcomes among congestive heart failure (CHF) cohorts from countries with different cultural and economic backgrounds. METHODS: Patients consecutively admitted with congestive heart failure to tertiary care teaching hospitals in Brazil and in the United States (U.S.) were systematically evaluated using a structured data form. Follow-up data 3 months after discharge were obtained using chart review and telephone interviews. RESULTS: U.S. patients were older (p < 0.01), had higher prevalence of ischemic etiology (p < 0.01) and less previous hospitalizations for congestive heart failure (p = 0.03) than Brazilian patients, but similar Charlson comorbidity scores (p = 0.54) and left ventricular (LV) function (p = 0.45). Prescription of angiotensin-converting enzyme inhibitors at discharge was lower at the U.S. hospital (57% vs. 68%; p = 0.03), but beta-blockers prescription was higher (37% vs. 10%; p < 0.01). Length-of-stay was significantly shorter (5 [interquartile range, 3-9] vs. 11 [6-19] days; p < 0.001) and in-hospital mortality was lower (2.4% vs. 13%; p < 0.001) in the U.S. cohort, but fewer clinical events within 3 months after discharge were observed in Brazilian patients (42% vs. 54%; p = 0.02). Combined clinical outcomes within 3 months, including overall mortality and hospital readmission, were similar between cohorts (57% vs. 55%; p = 0.80). In multivariate analysis, hospital site remained significantly associated with health outcomes. CONCLUSIONS: Medical practice and health-related outcomes were different between U.S. and Brazilian congestive heart failure patients. In order to improve management worldwide, potential factors (structural, cultural or disease-related) that might be associated with these differences need to be evaluated in future studies.