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Surgically assisted maxillary expansion with or without pterygoid disjunction alters maxillomandibular positioning. Oral Maxillofac Surg 2022:10.1007/s10006-022-01062-1. [PMID: 35426586 DOI: 10.1007/s10006-022-01062-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 03/30/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE This study aimed to analyze alterations in mandibular positioning after surgically assisted maxillary expansion (SARME) with and without pterygoid disjunction (PD). METHODS Cone-beam computed tomography scans of 24 healthy individuals (18-45 years old) with transverse deficiency, superior to 5 mm, underwent SARME with or without PD. The aspects prospectively assessed were (1) alignment and position of the head (ITK-Snap and 3D Slicer software); (2) McNamara's and Steiner-Tweed-Wits' cephalometric analysis (Dolphin Imaging®); and (3) colorimetric evaluation based on 3D correspondence analysis (3D Slicer software). RESULTS A decrease in 1-NA and 1-SN angles as well as an increased occlusal plane in both groups was observed. Superior-inferior and anteroposterior spatial displacements of the chin were statistically significant in the PD group. Altered colorimetric patterns were also observed in the PD group. CONCLUSIONS This study found more evident tooth inclination in the group without PD; mandibular alterations were more evident in the PD group. Further studies with 3D analysis are strongly recommended for more comprehensive results.
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Workflow in open-source software for computed tomography analysis: technical note. Br J Oral Maxillofac Surg 2022; 60:987-990. [DOI: 10.1016/j.bjoms.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/12/2021] [Accepted: 01/06/2022] [Indexed: 11/25/2022]
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3
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Cisto periodontal lateral e cisto odontogênico botrióide. REVISTA DA FACULDADE DE ODONTOLOGIA DE PORTO ALEGRE 2021. [DOI: 10.22456/2177-0018.110274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Cystic jaw bone lesions have been largely studied and discussed since the beginning of their recognition. Although many of them have already been well-defined, some of them go on generating divergent opinions, such as the lateral periodontal cyst (LP C) and the botryoid odontogenic cyst (BOC). The objective of this article is to report two cases of unusual characteristics, one of them is about a lateral periodontal cyst and the other one is about a botryoid odontogenic cyst, presenting considerations as to their clinical, radiographic and histological aspects.
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Maxillofacial Gossypiboma: Case Report, Review of the Literature, and Diagnosis Algorithm. J Maxillofac Oral Surg 2020; 19:50-53. [PMID: 31988564 DOI: 10.1007/s12663-019-01242-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 05/18/2019] [Indexed: 11/25/2022] Open
Abstract
Gossypiboma is a retained surgical sponge and represents a rare complication with an uncertain incidence probably due to medical-legal implications. It is an iatrogenic condition solely due to human factors. While the medical literature has previously described cases of this entity after orthopedic, abdominal, otorhinolaryngology, and plastic surgery procedures, gossypibomas in oral and maxillofacial region are uncommon. It can mimic neoplasms or other injuries, which may promote a delayed diagnosis; thus, the differential diagnosis should be based on clinical history in each particular case. Although there are no pathognomonic features of gossypiboma in oral and maxillofacial region, the most common symptoms suggestive of persistent inflammation include pain, fever, swelling, surgical wounds that do not heal, and purulent drainage. The aim of this study was to report a maxillofacial gossypiboma misdiagnosed as third molar surgery-related odontogenic infection and a diagnosis algorithm.
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Does surgically assisted rapid maxillary expansion associated with pterygomaxillary disjunction result in changes in mandibular position? A PROSPERO-compliant systematic review of the literature. J Craniomaxillofac Surg 2019; 47:1046-1053. [DOI: 10.1016/j.jcms.2019.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 01/07/2019] [Accepted: 02/26/2019] [Indexed: 10/27/2022] Open
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Evaluation of different therapeutic Carnoy's formulations on hard human tissues: A Raman microspectroscopy, microhardness, and scanning electron microscopy study. J Craniomaxillofac Surg 2018; 46:749-758. [PMID: 29655532 DOI: 10.1016/j.jcms.2018.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/07/2018] [Accepted: 02/14/2018] [Indexed: 10/18/2022] Open
Abstract
PURPOSE To evaluate different therapeutic Carnoy's solution formulations on hard human tissues. MATERIALS AND METHODS An in vitro study was performed with human teeth (n = 36) and bone fragments (n = 18), randomly divided into two experimental groups (Group I = Carnoy solution with chloroform; Group II = Carnoy solution without chloroform) and a control group (saline solution). The groups were subdivided into pre-conditioning, post-conditioning, and post-conditioning with saline washing. Raman microspectroscopy, Knoop microhardness test, and scanning electron microscopy with energy dispersive X-ray spectroscopy were used. RESULTS There was demineralization of dental structures regarding mineral/matrix and carbonate/phosphate ratios (GI versus GII, p < 0.05). The presence of chloroform resulted in a statistically significant reduction of the teeth surface microhardness (p = 0.036), but not exceeding 0.01 μm. Both GI and GII showed significant structural changes by using scanning electron microscopy with energy dispersive X-ray spectroscopy. CONCLUSION Carnoy's solution altered the organic and inorganic matrix of the human calcified specimens analyzed in vitro, and its effect was more pronounced when chloroform was present.
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Effects of Pterygomaxillary Separation on Skeletal and Dental Changes After Surgically Assisted Rapid Maxillary Expansion: A Single-Center, Double-Blind, Randomized Clinical Trial. J Oral Maxillofac Surg 2018; 76:844-853. [DOI: 10.1016/j.joms.2017.08.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 08/12/2017] [Accepted: 08/17/2017] [Indexed: 11/29/2022]
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Avaliação in vitro de Diferentes Métodos e Dispositivos de Fixação para Tracionamento Dentário Sobre Esmalte Bovino: um Estudo Piloto. JOURNAL OF HEALTH SCIENCES 2018. [DOI: 10.17921/2447-8938.2017v19n5p266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
O presente trabalho objetivou avaliar a resistência de dispositivos de tracionamento dentário fixados a distintos sistemas de adesão. Foi realizado um estudo piloto in vitro utilizando-se seis dentes bovinos (18 blocos de esmalte) divididos em: tipo de dispositivo (botão ou fio ortodôntico) e sistema de adesão (resina composta convencional, ionômero de vidro ou resina composta acídica). Os fragmentos foram previamente polidos com abrasivos e os corpos de prova obtidos foram submetidos ao teste de cisalhamento. Fio ortodôntico/resina composta convencional e botão ortodôntico/ resina composta convencional exibiram os maiores valores de tensão (4,72±0,8 MPa e 3,05±0,43 MPa respectivamente), enquanto que fio/resina acídica e botão/ionômero de vidro exibiram os menores valores (0,78±0,13 MPa e 1,76±1,01 MPa respectivamente). Os valores de tensão máxima obtidos foram submetidos a ANOVA-2-way, onde não foi observada diferença estatisticamente significante com relação ao sistema de adesão (p0,299) e ao tipo de dispositivo utilizado (p0,762). Em sumário, os valores de tensão máxima diferiram numericamente entre os grupos estudados. Embora o presente estudo piloto não tenha evidenciada diferença estatisticamente significativa, faz-se necessária esse tipo de investigação considerando-se a importância desse tópico no campo interdisciplinar materiais dentários/cirurgia oral.Palavras-chave: Técnicas in vitro. Movimentação Dentária. Esmalte Dentário.
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Use positional screws for Le Fort I osteotomy fixation: technical note. Oral Maxillofac Surg 2017; 21:347-349. [PMID: 28462475 DOI: 10.1007/s10006-017-0625-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
In recent years, several studies related to fixation systems have been published, but few suggest any variations of the Le Fort I osteotomy technique, and the use of plates and screws placed along the canine and zygomatic pillar are common. The 20-year-old patient with Crouzon syndrome presented with severe hypoplasia of the maxillary, mandibular prognathism, and class III facial pattern. The patient underwent orthognathic surgery and high Le Fort I osteotomy with the fixation of eight positional screws. The aim of this paper is to describe a different technique for the fixation in high maxillary osteotomies, which can be used in specific cases.
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Educational Utilization of Microsoft Powerpoint for Oral and Maxillofacial Cancer Presentations. Asian Pac J Cancer Prev 2016; 17:2337-9. [PMID: 27221941 DOI: 10.7314/apjcp.2016.17.4.2337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Electronic presentations have become useful tools for surgeons, other clinicians and patients, facilitating medical and legal support and scientific research. Microsoft® PowerPoint is by far and away the most commonly used computer-based presentation package. Setting up surgical clinical cases with PowerPoint makes it easy to register and follow patients for the purpose of discussion of treatment plan or scientific presentations. It facilitates communication between professionals, supervising clinical cases and teaching. It is often useful to create a template to standardize the presentation, offered by the software through the slide master. The purpose of this paper was to show a simple and practical method for creating a Microsoft® PowerPoint template for use in presentations concerning oral and maxillofacial cancer.
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Does the Preemptive Use of Oral Nonsteroidal Anti-inflammatory Drugs Reduce Postoperative Pain in Surgical Removal of Third Molars? A Meta-analysis of Randomized Clinical Trials. Anesth Prog 2015; 62:57-63. [PMID: 26061574 DOI: 10.2344/0003-3006-62.2.57] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The purpose of this study was to investigate the effectiveness of preemptive analgesia with nonsteroidal anti-inflammatory drugs (NSAIDs) in third-molar surgery. A PubMed literature search was conducted for articles restricted to the English language using the following terms (DeCS/MeSH) or combinations: analgesia, third molar, and preemptive. From a total of 704 articles, 6 (n=420 subjects) were selected. All studies presented a low risk of bias (Cochrane criteria) but exhibited high heterogeneity of methods. Two studies were excluded from the meta-analysis because they did not have adequate numeric values (dichotomous data) for the calculations. Preemptive analgesia showed no significant benefit (n=298, P=.2227, odds ratio: 2.30, 0.60-8.73) in reducing postoperative pain after removal of lower impacted third molars. However, there was a probable direct relationship between the effectiveness of NSAIDs in preemptive analgesia for removal of third molars and its selectivity for the cyclooxygenase-2 (COX-2). Preemptive analgesia did not have a significant effect in reducing postoperative pain after removal of lower impacted third molars. More homogeneous and well-delineated clinical studies are necessary to determine a possible association between NSAIDs' selectivity for COX-2 and treatment effectiveness.
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Hybrid Odontogenic Tumor in the Posterior Maxilla: A Case Report. Oral Surg Oral Med Oral Pathol Oral Radiol 2015. [DOI: 10.1016/j.oooo.2015.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Oral Metastasis of A Colon Adenocarcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2015. [DOI: 10.1016/j.oooo.2015.02.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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A split-mouth, randomized, triple-blind, placebo-controlled study to analyze the pre-emptive effect of etoricoxib 120 mg on inflammatory events following removal of unerupted mandibular third molars. Int J Oral Maxillofac Surg 2015; 44:1166-74. [PMID: 26144571 DOI: 10.1016/j.ijom.2015.06.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 06/04/2015] [Accepted: 06/12/2015] [Indexed: 11/26/2022]
Abstract
Pain after third molar extraction has been considered the most suitable pharmaceutical model to evaluate acute pain. This study aimed to evaluate the pre-emptive analgesic/anti-inflammatory efficacy of etoricoxib 120 mg following mandibular third molar surgery. A split-mouth, randomized, triple-blind, placebo-controlled study was conducted with patients undergoing the surgical removal of mandibular third molars. All volunteers were allocated randomly to receive either etoricoxib 120 mg or placebo 1h preoperatively, and inflammatory events were evaluated. An estimated sample of 18 surgical units per group was required based on a pilot study (95% confidence level and 80% statistical power). Rescue medication was analyzed by Kaplan-Meier method through log-rank Mantel-Cox test and Pearson linear correlation (P<0.05). Pre-emptive etoricoxib reduced postoperative pain scores significantly in comparison to placebo (P<0.001), with a pain score peak at 6h after surgery (P<0.001). The mean rescue medication consumption was lower in the etoricoxib group compared to the placebo group over the study period (P<0.05). There was no statistically significant difference between groups related to swelling and trismus. The pre-emptive administration of etoricoxib 120 mg significantly reduced the postoperative pain intensity and the need for rescue medication, but did not reduce swelling or trismus.
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Enamel and dentin mineralization in familial hypophosphatemic rickets: a micro-CT study. Dentomaxillofac Radiol 2015; 44:20140347. [PMID: 25651274 DOI: 10.1259/dmfr.20140347] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
OBJECTIVES The aim of the present study was to analyse the mineralization pattern of enamel and dentin in patients affected by X-linked hypophosphatemic rickets (XLHR) using micro-CT (µCT), and to associate enamel and dentin mineralization in primary and permanent teeth with tooth position, gender and the presence/absence of this disease. METHODS 19 teeth were collected from 5 individuals from the same family, 1 non-affected by XLHR and 4 affected by XLHR. Gender, age, tooth position (anterior/posterior) and tooth type (deciduous/permanent) were recorded for each patient. Following collection, teeth were placed in 0.1% thymol solution until µCT scan. Projection images were reconstructed and analysed. A plot profile describing the greyscale distance relationship in µCT images was achieved through a line bisecting each tooth in a region with the presence of enamel and dentin. The enamel and dentin mineralization densities were measured and compared. Univariate ANOVA and post hoc Tukey tests were used for all comparisons. RESULTS Teeth of all affected patients presented dentin with a different mineralization pattern compared with the teeth of healthy patients with dentin defects observed next to the pulp chambers. Highly significant differences were found for gray values between anterior and posterior teeth (p < 0.05), affected and non-affected (p < 0.05), as well as when position and disease status were considered (p < 0.05). CONCLUSIONS In conclusion, the mineralization patterns of dentin differed when comparing teeth from patients with and without FHR, mainly next to pulp chambers where areas with porosity and consequently lower mineral density and dentin defects were found.
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Transnasal Removal Of Ectopic Supernumerary Tooth From Cleft Patient. Int Arch Med 2015. [DOI: 10.3823/1796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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17
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Craniofacial Fibrous Dysplasia Addressed Through The Intraoral And Nasal Access. Int Arch Med 2015. [DOI: 10.3823/1729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Simplification On The Reduction Of Comminuted Mandibular Fractures For Stable Internal Fixation. Int Arch Med 2015. [DOI: 10.3823/1728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Simultaneous occurrence of dentigerous cyst and residual cyst in the maxilla. Braz J Otorhinolaryngol 2014; 80:88-9. [PMID: 24626898 PMCID: PMC9444621 DOI: 10.5935/1808-8694.20140017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 08/10/2012] [Indexed: 11/20/2022] Open
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Elderly male complaining of life-threatening oral swelling. Geriatr Gerontol Int 2014; 14:226-7. [PMID: 24405821 DOI: 10.1111/ggi.12156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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A suitable device for cystic lesions close to the tooth-bearing areas of the jaws. J Oral Maxillofac Surg 2013; 72:96-8. [PMID: 23992786 DOI: 10.1016/j.joms.2013.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 07/09/2013] [Accepted: 07/11/2013] [Indexed: 10/26/2022]
Abstract
Different devices for decompression of cystic lesions of the jaw have been described in the literature. Although there are no rigorous rules for choosing a particular design or method, the choice depends on situational needs. Although minor, most techniques are associated with certain difficulties and complications, such as the need for long-term monitoring, inappropriate decompression tube size, soft tissue trauma, suture dehiscence, soft tissue invagination, dislodgement, and malpositioning of the tube into the lesion. These complications may have a negative impact on the level of treatment acceptance, especially when devices are used over long periods. The aim of this study was to present a new suitable device for cystic lesions close to tooth-bearing areas of the jaws.
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Correlation between radiographic signs of third molar proximity with inferior alveolar nerve and postoperative occurrence of neurosensory disorders: A prospective, double-blind study. Acta Cir Bras 2013; 28:221-7. [DOI: 10.1590/s0102-86502013000300011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 01/21/2013] [Indexed: 11/22/2022] Open
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Local hemostatic measures in anticoagulated patients undergoing oral surgery: a systematized literature review. Acta Cir Bras 2013; 28:78-83. [DOI: 10.1590/s0102-86502013000100013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 11/18/2012] [Indexed: 05/27/2023] Open
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Clinical approach in familial hypophosphatemic rickets: report of three generations. SPECIAL CARE IN DENTISTRY 2012; 33:304-307. [PMID: 23278178 DOI: 10.1111/j.1754-4505.2012.00310.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Familial hypophosphatemic rickets is a hereditary disease characterized by the involvement of several family members, transmitted in most cases as an X-linked dominant trait. Oral manifestations can be the first evidences for an adequate and early diagnosis of X-linked hypophosphatemic rickets (XLHR). The present report describes the main systemic manifestations, oral findings and dental management in three generations of an affected family. Oral exams, laboratorial and histologic evaluations, cone-beam computed tomographies, panoramic and periapical radiographs were performed to properly institute the most adequate treatment strategy. The knowledge of clinical signs and symptoms of XLHR is essential for the correct diagnosis of this disease, and for the establishment of preventive and comprehensive dental care.
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The use of Le Fort I Approach in the resection of an extensive ossifying fibroma. Oral Maxillofac Surg 2012; 17:209-12. [PMID: 22933036 DOI: 10.1007/s10006-012-0358-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Accepted: 08/18/2012] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Ossifying fibroma (OF) is a well-defined benign neoplasm characterized by slow growth and predilection for the posterior mandible site, usually treated by conservative surgical approaches. In this context, Le Fort I Approach (LFIA) has been increasingly used providing good visualization and an easy access to the lesion. It also allows removal of the lesion quickly. Although there are case reports using LFIA for the management of benign neoplasms, odontogenic cysts and tumors of the middle third of face, to our knowledge, only one article describes the use of surgical LFIA for OF of the maxilla. Thus, the objective of this study was to report the second paper on the use of horizontal osteotomy of the maxilla in the resection of an extensive OF and conduct a brief literature review on this surgical approach. CASE REPORT The following case report describes a 33-year-old man who was diagnosed with OF. Oral examination showed a painless swelling of hard consistency, covered by normal mucosa in edentulous alveolar ridge of the maxillary posterior region of the right side. Tomographic slices revealed that the image with mixed density had a centrifugal growth, with expansion of the buccal and lingual cortical with an upper displacement of the maxillary sinus. The patient was admitted to the hospital for surgical resection of the lesion via LFIA. Satisfactory functional results were obtained after 18-month follow-up period. In addition, no recurrence or clinical complaints were noted. DISCUSSION LFIA shall be considered as a feasible option when planning surgery for removal of extensive benign lesions located in midfacial region because it is a predictable technique and routinely performed by the oral and maxillo-facial surgeons.
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A simple device for traction of impacted teeth: a technical note. J Oral Maxillofac Surg 2012; 70:2278-9. [PMID: 22766385 DOI: 10.1016/j.joms.2012.04.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2012] [Revised: 04/03/2012] [Accepted: 04/30/2012] [Indexed: 11/30/2022]
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Biomechanical analysis of titanium plate systems in mandibular condyle fractures: a systematized literature review. Acta Cir Bras 2012; 27:424-9. [PMID: 22666761 DOI: 10.1590/s0102-86502012000600011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 04/16/2012] [Indexed: 11/22/2022] Open
Abstract
PURPOSE: To conduct a systematized review of the literature about the main methodologies used to evaluate the biomechanical fixation systems with titanium plates in fractures of the mandibular condyle. METHODS: A systematized review of literature was performed in the electronic databases PubMed, EMBASE, LILACS and MEDLINE without restriction of the publication date. The eligibility criteria were laboratory studies involving mandibular condyle fractures, studies using titanium plates, biomechanical studies, in vitro and computational studies involving the finite element method (FEM). RESULTS: Eleven articles that met the eligibility criteria were selected, including seven articles involving in vitro studies and four studies with biomechanical analysis by using FEM. CONCLUSION: Although few articles have used the finite element method, the results of in vitro studies were similar to those found in computational studies, regarding to the stable use of two titanium miniplates.
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Changes in morphology of long bone marrow tissue of rats submitted to cryotherapy with liquid nitrogen. Acta Cir Bras 2012; 27:179-84. [PMID: 22378375 DOI: 10.1590/s0102-86502012000200014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 12/12/2011] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To study the main effects of local use of liquid nitrogen on bone marrow tissue in rats. METHODS The femoral diaphyses of 42 Wistar rats were exposed to three local and sequential applications of liquid nitrogen for one or two minutes, intercalated with periods of five minutes of passive thawing. The animals were sacrificed after one, two, four and 12 weeks and the specimens obtained were analyzed histomorphologically. RESULTS In the second experimental week of one-minute protocol, histological degree of inflammation obtained a mean score of one (mild), ranging from 0 (absent or scarce) and two (moderate) (Kruskal-Wallis test p=0.01). In the second experimental week of two-minute protocol, degree of inflammation to the medullar tissue obtained an average score of two (Kruskal-Wallis test p=0.01). CONCLUSION The degree of inflammation of the bone marrow tissue was higher in protocol of three applications of two minutes compared to protocol of three applications of one minute.
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Clinical and surgical treatment of a rare lingual cyst in a 12-year-old girl. QUINTESSENCE INTERNATIONAL (BERLIN, GERMANY : 1985) 2011; 42:479-482. [PMID: 21519585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Cysts lined with gastrointestinal or respiratory epithelium are rarely found in the oral cavity. These lesions usually involve the ventral surface of the tongue or floor of the mouth. This article describes a new case of a lingual cyst lined by respiratory epithelium, discussing its clinical relevance, surgical management, and ideal time for intervention.
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Giant salivary calculus of the submandibular gland. Otolaryngol Head Neck Surg 2009; 140:128-9. [DOI: 10.1016/j.otohns.2008.08.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 06/18/2008] [Accepted: 08/13/2008] [Indexed: 11/28/2022]
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Adenoid cystic carcinoma of the tongue: case report and literature review. Med Oral Patol Oral Cir Bucal 2008; 13:E475-E478. [PMID: 18667978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
Adenoid cystic carcinoma is a common malignant neoplasm originated from salivary glands. The clinical and pathological findings typical of this tumor include slow growth, perineural invasion, and potential local recurrence. It accounts for nearly 2% to 4% of head and neck area tumors. In minor salivary glands it usually affects the palate. We described herein the case of a patient who presented a posterior tongue lesion, which was treated with surgery and radiotherapy as additional treatment. We also carried out a brief literature review on the subject.
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Cephalometric characteristics and dentofacial abnormalities of pycnodysostosis: report of four cases from Brazil. ACTA ACUST UNITED AC 2007; 104:e83-90. [PMID: 17703963 DOI: 10.1016/j.tripleo.2007.05.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2006] [Revised: 04/09/2007] [Accepted: 05/07/2007] [Indexed: 10/22/2022]
Abstract
Pycnodysostosis (PKND) is a human autosomal recessive genetic disorder characterized mainly by osteosclerosis of the skeleton, severe bone fragility, and short stature. This syndrome usually presents very typical craniofacial deformities, such as beaked nose, micrognathia, hypoplastic midface, open mouth posture, grooved palate, anterior cross-bite, dental crowding, and over-retained deciduous teeth. Early diagnosis and intervention are of the utmost importance. Four cases from the northeast of Brazil are reported including 2 siblings. Features included maxillary retrusion, reduced facial height, open bite, and bone fracture history. Very poor oral hygiene, severe dental caries, and periodontal disease were also present.
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