Sacred Heart University of Brazil
Sacred Heart University of Brazil
de Oliveira G.J.P.L.,Sacred Heart University of Brazil
Journal of Craniofacial Surgery | Year: 2017
ABSTRACT: The objective of this study was to evaluate the presence, position, and diameter of the intraosseous branch (IObr) of the posterior superior alveolar artery in fully edentulous patients. Two-hundred five computed tomography scans of fully edentulous patients were analyzed. The presence of the IObr was investigated in the coronal plane at the lateral wall of the maxillary sinus. In patients in whom the IObr was detected, the artery diameter was measured, and the distance from the artery to the bone crest of the alveolar ridge, the maxillary sinus floor, and the distance of the maxillary sinus floor to the bone crest of the alveolar ridge were measured as well. A descriptive statistical analysis of these parameters was conducted. The IObr was identified in the maxillary sinus in 105 tomography images (51.2%), and its diameter varied between 0.8 and 3.3?mm (1.29?±?0.49?mm). The IObr presented with an artery diameter less than 1?mm in 29% of the patients, between 1 and 2?mm diameter in 61% of the patients and with a diameter larger than 2?mm in 10% of patients. Regarding the IObr topography, the distance from the artery to the floor of the maxillary sinus was 9.62?±?4.59?mm, and the distance from the artery to the top of crestal bone was 15.15?±?4.47?mm. At least 10% of edentulous patients are at risk of bleeding complications during interventions in the maxillary sinus. © 2017 by Mutaz B. Habal, MD.
Vieira B.S.,Sacred Heart University of Brazil
Journal of Craniofacial Surgery | Year: 2017
ABSTRACT: Free gingival graft is a predictable technique for increasing the amount of attached gingiva and root coverage; however, its use is limited for cosmetic reasons. To overcome this issue, this study sought to compare 2 free gingival graft techniques that use oral screws to attach grafts. Free gingival graft was performed on teeth 44 to 46 using the traditional technique, while on the opposite side, on teeth 34 to 36, partly epithelialized free gingival grafts were performed. The partly epithelialized free gingival grafts were found to provide better cosmetic results relative to the completely epithelialized free gingival graft, and the use of stabilizing screws was found to be simple and effective. © 2017 by Mutaz B. Habal, MD.
Baffa O.,University of Sao Paulo |
Kinoshita A.,Sacred Heart University of Brazil
Radiation and Environmental Biophysics | Year: 2014
This paper discusses the clinical applications of electron spin resonance (ESR) dosimetry focusing on the ESR/alanine system. A review of few past studies in this area is presented offering a critical overview of the challenges and opportunities for extending this system into clinical applications. Alanine/ESR dosimetry fulfills many of the required properties for several clinical applications such as water-equivalent composition, independence of the sensitivity for the energy range used in therapy and high precision. Improvements in sensitivity and the development of minidosimeters coupled with the use of a spectrometer of higher microwave frequency expanded the possibilities for clinical applications to the new modalities of radiotherapy (intensity-modulated radiation therapy and radiosurgery) and to the detection of low doses such as those present in some radiological image procedures. © Springer-Verlag Berlin Heidelberg 2014.
Peruquetti R.L.,Sacred Heart University of Brazil
Animal Reproduction Science | Year: 2015
Several genetic and epigenetic events that take place in the nucleus (i.e. meiotic recombination, meiotic silencing, chromatin reorganization and histone replacement) are crucial for the spermatogenesis process, as well as, is the assembling of cytoplasmic bodies (or chromatoid bodies). In this minireview, we give special attention to the most recent research approaches involved in the molecular structure and physiology of the chromatoid body (CB). Though it was described several decades ago, the CB is still a very intriguing cytoplasmic structure of male germ cells. It plays roles in the most important steps of the spermatozoon formation, such as mRNA regulation, smallRNA-mediated gene control, and cell communication among round spermatids. Studies that have been done on the CB largely focus on two main topics: (1) CB proteome, in this minireview focused on '. Evidences linking the nucleolar cycle and the CB assembling; and Circadian proteins found in the CB'; and (2) CB transcriptome, in this minireview focused on '. miRNAs and piRNAs pathways; and X but not Y chromosome transcripts enriching the CB'. Herein, we described the most relevant results produced in each of these subjects in order to clarify the main physiological role played by this intriguing cytoplasmic structure in the germ cells of male mammals, which though long since described, still fascinates researchers in the field. © 2015 Elsevier B.V.
Campana A.N.,Sacred Heart University of Brazil
PloS one | Year: 2013
Body checking is considered an expression of an excessive preoccupation with appearance. The first aim of this study was to evaluate the psychometric properties of a Brazilian Portuguese version of the Body Checking Questionnaire (BCQ). Additionally, we wanted to examine the questionnaire's associations with body avoidance behaviour, body mass index, dietary habits, and the intensity, frequency, and length of physical exercise. Finally, we also examined the differences between the total BCQ score and the individual BCQ factor scores. Differences between active and sedentary persons and between non-dieters and those on weight-loss diets were also analyzed. For the psychometric study, 546 female public university students from four different courses were surveyed. Two minor samples of university students and eating disorders women were also recruited. In the second part of the study, 403 women were recruited from weight-loss programs, gyms, and a university. All participants were verbally invited to participate in the research and voluntarily took part. Confirmatory factor analysis showed a good fit to the original model of the Brazilian BCQ that retained all 23 items. Satisfactory evidence of construct validity and internal consistency were also generated through analysis of factor loadings, t-values, Cronbach's alpha, and construct reliability tests. The results also showed associations among body checking and body avoidance, body satisfaction, social anxiety, body mass index, and the frequency and intensity of physical exercise. Significant differences were found between non-dieters and weight-loss dieters for all BCQ factors and the total BCQ score. For physically active and sedentary persons, a significant difference was only observed for idiosyncratic checking behaviour. In conclusion, the BCQ appears to be a valid and reliable scale for Brazilian research, and the associations and differences found in this study suggest that women at gyms and especially in weight-loss programs should be targeted for future body checking studies.
Miglioranca R.M.,Sacred Heart University of Brazil
The International journal of oral & maxillofacial implants | Year: 2011
To report on the clinical outcome of 150 extrasinus zygomatic implants placed lateral to the maxillary sinus and combined with conventional implants in the anterior maxilla for the implant-supported rehabilitation of the edentulous maxilla. All patients included in this study presented with completely or partially edentulous maxillae with any remaining teeth indicated for extraction. Indications for extractions in partially edentulous patients included longitudinal fractures, periodontal disease, endodontic failure, perforated roots, and prosthetic convenience. All patients showed severe resorption of the posterior maxilla. Each patient was treated with at least four implants, with a minimum of one zygomatic implant. No bone grafting was performed. The zygomatic implants were placed outside the sinus, lateral to the maxillary sinus. The patients were followed with standardized clinical and radiographic examinations. Results: Seventy-five patients with severely atrophic maxillae (mean age, 52 years) were treated between 2003 and 2006. In all, 436 implants (150 zygomatic implants and 286 conventional implants) were placed. Two conventional implants failed during the study period, and two zygomatic implants were removed. All the prostheses were successful. No patients presented sinusitis. No loosened or fractured screws on any implants were recorded. Extrasinus zygomatic implants, when combined with conventional implants in the anterior maxilla, represent a predictable treatment option for the atrophic edentulous maxilla. Further studies are necessary to evaluate the long-term prognosis of these implants.
dos Santos P.L.,Sacred Heart University of Brazil
Journal of Craniofacial Surgery | Year: 2016
ABSTRACT: As life expectancy increases, a larger number of elderly people require dental health care attention for implant-supported rehabilitation, with the aim of restoring the function and aesthetics of the oral cavity. Most of these patients have lost their teeth long time ago, causing a severe bone resorption and maxillary sinus pneumatization. Therefore, the current study aims to demonstrate, through the description of the clinical case, the treatment with zygomatic implants as an option for treating severely atrophic maxillas. In this clinical study, the patient presented, in the clinical and image evaluation, severe alveolar bone atrophy, with height and thickness loss, in addition to a high-level pneumatization of the maxillary sinus, bilaterally. The classical zygomatic fixation technique was suggested, with 2 anterior conventional implants and 2 zygomatic implants in the posterior region with the placement of implant-supported prosthesis with immediate loading. The patient was monitored for 7 years and did not present pain complaints, absence of infection, or implant loss. Based on this clinical case study, it was concluded that the zygomatic implants are satisfactory options to aid the implant-supported rehabilitation of atrophic maxillas. © 2016 by Mutaz B. Habal, MD.
Ribeiro-Junior P.D.,Sacred Heart University of Brazil
Journal of Craniofacial Surgery | Year: 2016
ABSTRACT: Facial nerve has great functional and aesthetic importance to the face, and damage to its structure can lead to major complications. This article reports a clinical case of neuroanastomosis of the facial nerve after facial trauma, describing surgical procedure and postoperative follow-up. A trauma patient with extensive injury cut in right mandibular body causing neurotmesis of the VIIth cranial nerve and mandibular angle fracture right side was treated. During surgical exploration, the nerve segments were identified and a neuroanastomosis was performed using nylon 10-0, after reduction and internal fixation of the mandibular fracture. Postoperatively, an 8-month follow-up showed good evolution and preservation of motor function of the muscles of facial mime, highlighting the success of the surgical treatment. Nerve damage because of facial trauma can be a surgical treatment challenge, but when properly conducted can functionally restore the damaged nerve. © 2016 by Mutaz B. Habal, MD.
Perobelli J.E.,Sacred Heart University of Brazil
Current Pharmaceutical Design | Year: 2014
The normal development of the male reproductive system can be divided into five phases: fetal, neonatal, childhood, puberty and adulthood. Childhood/peripuberty has yet been relatively little studied. Chemical insults during the peripubertal phase may result in adverse consequences that may be already visible during puberty as well as during later adult life. This occurs because endocrine disruptors often interfere in the developmental programming. The most important is to note that children are not just little adults and should be particularly investigated. The aim of this review is to discuss the recent literature (2000-2013) on male reproductive aspects in prepubertal toxicity assays, focusing on experimental in vivo studies, establishing a comparative analysis between the design, endpoints, results and consequent conclusion. The studies discussed in the present review were selected based on the period of exposure. Only studies with post-lactational exposures were included. 33 papers were included using rats, mice, rabbits or pigs as experimental model. There is a relative scarcity of studies investigating animals in development and thus an urgent need for further studies in order to evaluate the possible persistent effects on fertility and other reproductive parameters at adulthood. Another point is the lack of studies with chemical mixtures, an imminent problem in modern society. It is vital to consider the refinement of alternative methods and the experimental designs and endpoints to improve the scientific knowledge in this area. © 2014 Bentham Science Publishers.
da Cunha H.A.,Sacred Heart University of Brazil
Quintessence international (Berlin, Germany : 1985) | Year: 2011
This case report is an 8-year follow-up of a malpositioned single implant, which was treated with segmental osteotomy, to confirm the treatment's characteristics, indications, and advantages. Deep buccal positioning of an endosseous implant placed in the maxillary left central incisor area did not permit acceptable prosthetic rehabilitation, despite its favorable bone insertion with no significant marginal bone loss. The surgical procedure included osteotomy and block movement performed toward the lingual and cervical position, fixed with a provisional prosthesis and miniplates and mini-implants. A connective tissue graft was necessary for esthetics optimization and was performed in a second stage. Advantages including the prevention of alveolar ridge damage, the improvement of gingival contour, and the use of an already integrated implant are presented. Clinically satisfactory hard and soft tissue stability permitted us to consider segmental surgery as a reliable alternative for malpositioned osseointegrated implants.