Publications by authors named "Buzzo C"

It is widely accepted that the use of topical sunscreens has medical importance with potential to prevent skin damage by protecting from solar ultraviolet radiation (UVR) effects. Pharmaceutical emulsions require an optimal qualitative and quantitative combination of emollients, emulsifiers and others compounds such as softening agents and, for sunscreens, a combination of chemical and physical UV filters. Herein, we applied the quality by design (QbD) concept to achieve stable and effective compounded sunscreen emulsions.

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Background: Fat grafting is a widely adopted method for reconstructing upper lip asymmetries. However, most surgical techniques are difficult to reproduce, and none follow anatomical principles.

Objectives: The aim of this study was to assess the clinical outcomes of upper lip contour asymmetry and lip cant correction by anatomical upper lip fat grafting using the subunit and fat compartment principles.

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Background: The palatal fistula is an important surgical challenge within the longitudinal follow-up of patients with repaired cleft palate as the success rate of palatal fistula reconstruction by adopting several surgical techniques is variable and often unsatisfactory. The purpose of this retrospective study was to report the clinical outcomes of an algorithm for the surgical management of palatal fistulae in patients with repaired cleft palate.

Methods: Consecutive patients (n = 101) with repaired cleft palate and palatal fistula-related symptoms who were treated according to a specific algorithm between 2009 and 2017 were included.

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Background: The identification of variables potentially correlated with speech outcome, following posterior pharyngeal fat grafting for treatment of velopharyngeal insufficiency (VPI), can provide useful information to guide decision-making and preoperative counseling. This study assessed the predictors of speech outcome after posterior pharyngeal fat grafting for VPI management.

Methods: One hundred and sixty-seven consecutive patients with repaired cleft palate and VPI who underwent posterior pharyngeal fat grafting were retrospectively enrolled.

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Background: This study aimed to evaluate the outcomes of posterior pharyngeal fat grafting for the management of velopharyngeal insufficiency using a simplified therapeutic algorithm and a tailored surgical technique.

Methods: This was a prospective study of consecutive nonsyndromic patients with repaired cleft palate and velopharyngeal insufficiency who were stratified according to a simplified algorithm (minimally scarred palate, transverse orientation of levator veli palatini, and pinhole-to-small velopharyngeal gaps) and who underwent tailored posterior pharyngeal fat grafting. The patients were screened for obstructive sleep apnea before and after surgery.

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Background: The purpose of this study was to conduct a linguistic validation of the velopharyngeal insufficiency (VPI) Effects on Life Outcome (VELO) instrument for use in Brazilian-Portuguese patients with VPI.

Methods: The original English version of the VELO instrument was translated into Brazilian-Portuguese, back-translated, and adapted among the Brazilian patients (n = 21) with VPI and their parents, based on the standardized guidelines for the cross-culture adaption process. Discrepancies in the forward and backward translation steps were computed.

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Background: The purpose of this study was to assess the objective and subjective outcomes of lower face volumetric (contour) asymmetry correction with isolated fat grafting in skeletally immature patients.

Methods: A prospective analysis was conducted of skeletally immature patients (n = 73) with craniofacial microsomia and Parry-Romberg syndrome who underwent isolated fat grafting (with no previous or concomitant bone surgery) using anatomical surgical principles (facial subunits and fat compartments) for the reconstruction of lower face volumetric asymmetry. Objective ultrasound and photogrammetric lower face symmetry analyses were blindly performed preoperatively and at 3 and 12 months postoperatively.

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Objective: To test the Brazilian Portuguese velopharyngeal insufficiency (VPI) Effects on Life Outcome (VELO) instrument for reliability and validity.

Design: Cross-sectional methodological study.

Setting: Tertiary craniofacial medical center.

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Background: Fat grafting has been described as an option to repair frontotemporal contour deformities (volumetric deficiency of bone and/or soft tissues) after neurosurgical/craniofacial surgical interventions. However, technical surgical descriptions have varied, with reports describing the bolus fat injection or the classical multilayer injection, but with no detailed descriptions concerning how and where the fat should be grafted. The purpose of this study was to assess the frontotemporal symmetry outcomes after a single fat-grafting procedure for postoperative frontotemporal contour deformity reconstructions using the anatomical fat-grafting approach.

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Background: The purposes of this study were to (1) assess complementary fat graft outcomes, (2) compare initial and complementary fat graft retention rates, and (3) evaluate the influence of different postoperative time points (3, 6, and 12 months after the initial procedure) for performing complementary fat grafting on fat graft outcomes.

Methods: A prospective analysis was conducted on patients with unilateral craniofacial contour deformities (n = 115) who underwent initial and complementary fat grafting. Complementary fat grafting was performed 3, 6, or 12 months after the initial fat grafts.

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Background: The purposes of this study were to evaluate facial symmetry after the first fat grafting session in patients with unilateral facial contour deformities and to identify independent predictors of 12-month postoperative facial symmetry.

Methods: A prospective analysis was conducted of consecutive patients (n = 167) that underwent fat grafting to restore facial contour symmetry. Computerized photogrammetric facial symmetry analyses were performed.

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Objective: To assess the electromyographic activity of the masseter and temporal muscles in cleft patients who underwent 1-stage palate repair versus 2-stage palate repair.

Methods: Thirty-two patients with nonsyndromic complete unilateral cleft lip and palate operated by 2 different protocols for palate repair, 1-stage (group 1, n = 16) versus 2-stage with delayed hard palate closure (group 2, n = 16) were available in the retrospective longitudinal study. Standardized electromyographic records of the masseter and anterior portion of temporal muscles were obtained with 2 repetitions during mastication and rest.

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Background: The purposes of this study were to report autologous free fat grafting as the workhorse procedure to augment the facial soft-tissue envelope and restore facial contour symmetry of patients with asymmetric facial malformations; to detail the SOBRAPAR Hospital algorithm for soft-tissue reconstruction of patients with facial contour asymmetry; and to assess facial symmetry after fat grafting.

Methods: A retrospective analysis of consecutive patients (n = 178) who underwent fat grafting to restore the facial contour symmetry according to the SOBRAPAR Hospital algorithm between 2009 and 2016 was conducted. Computerized photogrammetric quantitative and qualitative facial symmetry analyses were performed.

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Objective: to present our experience in the hypertelorbitism surgical treatment in craniofrontonasal dysplasia.

Methods: retrospective analysis of craniofrontonasal dysplasia patients operated through orbital box osteotomy or facial bipartition between 1997 and 2015. Surgical data was obtained from medical records, complementary tests, photographs, and clinical interviews.

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Objective: to present our experience in the surgical treatment of extensive skullcap defects with customized acrylic implants.

Methods: we conducted a retrospective analysis of patients with extensive skull defects undergoing acrylic cranioplasties between 2004 and 2013. We carefully selected all patients and classified surgical results based on three scales (craniofacial esthetics, improvement of facial symmetry and need for additional surgery).

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Background: Autologous free fat graft outcomes are not always predictable, and variables that can potentially influence fat graft retention are still not well understood or investigated. The purposes of this study were to assess fat graft retention in the management of craniofacial contour deformities and to identify possible predictive factors of this retention.

Methods: A prospective analysis was conducted using consecutive patients with unilateral craniofacial contour deformities who underwent autologous free fat grafting between 2012 and 2015.

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Nitric oxide synthase 2, inducible (Nos2) expression is necessary for the microbicidal activity of macrophages. However, NOS2 over-activation causes multiple inflammatory disorders, suggesting a tight gene regulation is necessary. Using cytosolic flagellin as a model for inflammasome-dependent NOS2 activation, we discovered a surprising new role for NLRC4/caspase-1 axis in regulating chromatin accessibility of the Nos2 promoter.

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Background: To present a single-institution experience in the comprehensive and global soft-tissue surgical approach of patients with craniofacial neurofibromatosis type 1 (NF-1).

Methods: A retrospective analysis of patients with craniofacial NF-1 (n = 20) who underwent craniofacial soft-tissue reconstruction between 1993 and 2014 was conducted. Surgical treatment was individualized according to age, functional and/or aesthetic impairment, neurofibroma types, anatomical location, size, and patient/family and surgical team preferences, regardless of previously published compartmental grading systems.

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Background: The aim of this study is to describe the surgical outcomes of a single-institution experience in the surgical management of temporomandibular joint ankylosis, comparing interpositional arthroplasty with autogenous tissue and Matthews device arthroplasty.

Methods: A retrospective analysis of temporomandibular joint ankylosis patients (n = 15), who underwent interpositional arthroplasty or Matthews device arthroplasty, was conducted. The surgical outcomes (preoperative, recent [4-6 weeks], intermediate [1 year], and late [3 years] postoperative maximal incisal opening, hospital stay, and complication, relapse, and reoperation rates) were compared.

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Background: The surgical management of craniofacial fibrous dysplasia is controversial. The purpose of this study was to report the surgical outcomes of individualized management of craniofacial fibrous dysplasia of a single institution.

Methods: Data from patients (n = 20) with craniofacial fibrous dysplasia, who were surgically treated between 2007 and 2014, were analyzed.

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Background: Autologous bone grafting is still considered the standard method for alveolar cleft repair. However, donor site morbidities remain a relevant problem in cleft care. Thus, the authors assessed postoperative donor site pain in cleft patients who underwent alveolar cleft repair by iliac crest bone graft transferring through a prospective randomized study comparing 2 minimally invasive harvesting techniques.

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Purpose: The purpose of this study was to quantify the changes in frontal morphology in patients with scaphocephaly treated with a modified Pi procedure.

Methods: Consecutive scaphocephalic patients (n = 13) who underwent surgery before 12 months of age that had more than 1 year of follow-up and standard preoperative, 3-month, and 1-year photographs were included. Anthropometric measurements were used to document the craniofacial index.

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Crouzon syndrome (CS) is an autosomal dominant disorder characterized by premature fusion of cranial sutures, midface and supraorbital ridge retrusion, exorbitism, and in some clinical scenarios strabismus, parrot-beaked nose, short upper lip and hypertelorbitism. Treatment of CS is overlapped with the beginning of craniofacial surgery and is grounded on morphologic and functional objectives. The authors reported on the outcomes and complications of family members (mother and 2 siblings) with CS, who were operated on by different techniques of frontofacial advancement and have attained skeletal maturity.

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