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Costa FA, Bahia MS, Chabot PQ, Sverzut CE, Trivellato AE. Three-dimensional assessment of the maxilla after modified surgically assisted rapid expansion: a retrospective study. Oral Maxillofac Surg 2024:10.1007/s10006-024-01258-7. [PMID: 38709398 DOI: 10.1007/s10006-024-01258-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 05/01/2024] [Indexed: 05/07/2024]
Abstract
OBJECTIVE This retrospective study aims to assess the three-dimensional dentoskeletal effects and median palatal suture opening pattern in patients undergoing modified surgically assisted maxillary rapid expansion (SARME) without pterygoid plate detachment. METHODS Twenty-eight patients submitted to modified SARME between 2009 and 2016 were retrospectively evaluated through cone-beam computed tomography (CBCT). Dental and skeletal measurements were taken at three different operative periods (before the expansion - T0; at the end of the activation of the Hyrax device - T1; and six months after the immobilization of the device - T2). Statistical analyses, including ANOVA and Pearson's correlation coefficient, were performed using SPSS software. RESULTS SARME demonstrated significant transverse maxillary expansion (with an average of 6.05 mm) with a greater impact in the anterior region. Dental measurements, including canine and molar distances, exhibited significant changes over the operative periods. Bone measurements (ANS and PNS) presented small but significant alterations, including a slight inferior displacement of ANS during device activation. The nasal floor width increased, followed by a width reduction after immobilization. The median palatal suture predominantly exhibited a Type II (V-shaped) opening. CONCLUSION The modified SARME presented a transversal direction increase and a super-lower skeletal displacement, with the anterior region being more affected than the posterior region. There was no change in the anteroposterior direction of the maxilla. Additionally, there was an increase in the linear dental measurements and a decrease in the angular measurement, with a positive correlation between the amount of posterior bone expansion and molar expansion as a result of the treatment in the analyzed period.
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Affiliation(s)
- Felippe Almeida Costa
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São, Paulo - Cafe Ave, S/N, West Sub-sector, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - Marcelo Santos Bahia
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São, Paulo - Cafe Ave, S/N, West Sub-sector, Ribeirão Preto, São Paulo, 14040-904, Brazil.
| | - Priscila Quintino Chabot
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São, Paulo - Cafe Ave, S/N, West Sub-sector, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - Cassio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São, Paulo - Cafe Ave, S/N, West Sub-sector, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São, Paulo - Cafe Ave, S/N, West Sub-sector, Ribeirão Preto, São Paulo, 14040-904, Brazil
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Nogueira LC, Quinto JHS, Trivellato PFB, Sverzut CE, Trivellato AE. Epidemiological Study of Frontal Sinus Fractures: Evaluation of 16 Years of Care at the Faculty of Dentistry of Ribeirão Preto/Brazil. J Maxillofac Oral Surg 2024; 23:371-379. [PMID: 38601249 PMCID: PMC11001839 DOI: 10.1007/s12663-022-01765-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/02/2022] [Indexed: 11/30/2022] Open
Abstract
Purpose Aiming to evaluate and study the epidemiological profile of frontal sinus fractures treated in the region of Ribeirão Preto-Brazil. Methods Sixteen years of activity in the Oral and Maxillofacial service of the Faculty of Dentistry of Ribeirão Preto/SP (FORP/USP), totaling 9,736 consultations, 4,524 with facial fractures, those diagnosed with frontal sinus fracture (113) were evaluated and selected for the study. Results Frontal sinus fractures accounted for 2.5% of facial fractures, the majority occurring in men (89.4%), concentrated in the age group 21-30 years old, with 52.2% of cases being caused by road traffic accidents (RTA). Associations with other facial fractures are common and appeared in 75.2% of cases. Treatment was followed either surgically, by open reduction internal fixation (52.2%) or conservatively (35.4%). Analyzing only the 28 isolated frontal sinus fractures, the most common treatment was conservative (46.4%). surgical treatment dropped to 25%. The most common postoperative complications were temporal branch paralysis and supraorbital nerve paresthesia, both occurring in 30.5% of surgical cases. Conclusion The frequency of frontal sinus fractures may be decreasing, but the pattern of occurrence in young men due to road traffic accidents does not seem to change, fortunately the appearance of serious complications is not common and it is usually associated with more severe trauma.
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Affiliation(s)
- Lucas Costa Nogueira
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av Do Café, S/nCampus USP, Ribeirão Preto, São Paulo, CEP: 14040-904 Brazil
| | - José Henrique Santana Quinto
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av Do Café, S/nCampus USP, Ribeirão Preto, São Paulo, CEP: 14040-904 Brazil
| | - Priscila Faleiros Bertelli Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av Do Café, S/nCampus USP, Ribeirão Preto, São Paulo, CEP: 14040-904 Brazil
| | - Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av Do Café, S/nCampus USP, Ribeirão Preto, São Paulo, CEP: 14040-904 Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av Do Café, S/nCampus USP, Ribeirão Preto, São Paulo, CEP: 14040-904 Brazil
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Amaral EC, Javaroni JB, Silveira HA, Trivellato AE, Sverzut CE, León JE. Pseudocarcinomatous Squamous Hyperplasia After Surgical Management Of Pediatric Ameloblastoma: An Immunohistochemical Study. J Maxillofac Oral Surg 2023; 22:741-745. [PMID: 37534340 PMCID: PMC10390451 DOI: 10.1007/s12663-023-01912-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 03/26/2023] [Indexed: 08/04/2023] Open
Abstract
Pseudocarcinomatous squamous hyperplasia (PSH) affecting the jaws is uncommon. The mandible is the most common location, usually as a complication associated with osteomyelitis, medication-related osteonecrosis or osteoradionecrosis. Herein, we report an 8-year-old male patient presenting a solid ameloblastoma, plexiform type, who was treated by segmental mandibulectomy with bone grafting. Three months later, on the underlying graft, a sinus tract was observed, and a small bone fragment was resected which was diagnosed as bone sequestration associated with PSH. After 7-year follow-up, the patient is well, without alterations. To our knowledge, for the first time, we report in detail the immunohistochemical features of PSH which, in addition to epithelial component profile and chronic inflammatory cells, revealed a diffuse infiltration by dendritic cells, suggesting that epithelial cell-immune cell interactions in PSH pathogenesis should also be considered.
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Affiliation(s)
- Eloísa Costa Amaral
- Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Julia Biliato Javaroni
- Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, 14040-904 Brazil
| | - Heitor Albergoni Silveira
- Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, 14040-904 Brazil
| | - Alexandre Elias Trivellato
- Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cássio Edvard Sverzut
- Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Jorge Esquiche León
- Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, 14040-904 Brazil
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Ribeiro BC, Assis NIL, Sverzut CE, Trivellato AE. Minimally-invasive intraoral technique for the treatment of Eagle syndrome. Br J Oral Maxillofac Surg 2023; 61:448-450. [PMID: 37308333 DOI: 10.1016/j.bjoms.2023.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/04/2023] [Accepted: 05/17/2023] [Indexed: 06/14/2023]
Affiliation(s)
- Bruna Campos Ribeiro
- Oral and Maxillofacial Surgery Residency Program, University of São Paulo FORP - USP, Ribeirão Preto, Brazil
| | - Nathalia Izis Lima Assis
- Oral and Maxillofacial Surgery Residency Program, University of São Paulo FORP - USP, Ribeirão Preto, Brazil
| | - Cassio Edvard Sverzut
- Oral and Maxillofacial Surgery, University of São Paulo, Ribeirão Preto, Dental School, Brazil
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Sverzut TFV, Sverzut AT, Trivellato AE, Sverzut CE. Retrospective analysis of the predictability of using three-dimensional models for preoperative planning of the length of zygomatic implants. Oral Maxillofac Surg 2023; 27:53-58. [PMID: 35166998 DOI: 10.1007/s10006-022-01047-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 02/10/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE This present study aimed to retrospectively evaluate the predictability of using three-dimensional models (TDMs) to plan the preoperative lengths of zygomatic implants (ZIs). METHODS The records of all patients that received such implants between March 2007 and March 2019 were evaluated. The ZI lengths predicted on the TDMs were compared to the lengths of the implants the patients received. RESULTS In total, the records of 74 patients were evaluated, of which 37 records met the criteria of inclusion, and were included in the study. Twenty-seven (73%) of the patients were female and 10 (27%) were male, ranging from 34 to 80 years of age, with the average age being 55.7 years. Seventeen (43.2%) of these patients were classified as ASA I and 21 (56.8%) as ASA II. A total of 142 ZIs were planned and installed in the time frame mentioned. Without distinguishing the region of the maxilla, the implants used were, on average, 1.1 mm larger in length than those initially planned. CONCLUSION Overall, the data indicates moderate agreement between the planned and surgical lengths of the ZIs and indicates that using TDMs is a predictable and reliable preoperative planning technique of the length of posterior ZIs.
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Affiliation(s)
- Thales Fabro Vanzela Sverzut
- Residency Training Program in Oral and Maxillofacial Surgery, School of Dentistry of Ribeirão Preto of the University of São Paulo, Avenida Do Café, s/n, Monte Alegre, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - Alexander Tadeu Sverzut
- Department of Oral Diagnosis, Maxillofacial Surgery Division, Piracicaba Dental School of the University of Campinas, Av. Limeira, 901, Bairro Areião, Piracicaba, São Paulo, 13414-903, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto of the University of São Paulo, Avenida Do Café, s/n, Monte Alegre, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto of the University of São Paulo, Avenida Do Café, s/n, Monte Alegre, Ribeirão Preto, São Paulo, 14040-904, Brazil.
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De Oliveira Barbeiro C, Trivellato PFB, De Souza FHP, Bufalino A, Sverzut CE, Trivellato AE, León JE. ODONTOGENIC MYXOMA ASSOCIATED WITH CALCIFICATIONS: CASE REPORT OF AN UNUSUAL HISTOPATHOLOGICAL FEATURE. Oral Surg Oral Med Oral Pathol Oral Radiol 2022. [DOI: 10.1016/j.oooo.2022.01.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Da Silveira HA, Ferreira MF, Da Silva EV, Panucci BZM, Sverzut CE, Trivellato AE, León JE. INTRAOSSEOUS SCHWANNOMA AFFECTING THE MANDIBLE: CASE REPORT AND IMMUNOHISTOCHEMICAL ANALYSIS. Oral Surg Oral Med Oral Pathol Oral Radiol 2022. [DOI: 10.1016/j.oooo.2022.01.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Romano FL, Sverzut CE, Trivellato AE, Saraiva MCP, Nguyen TT. Alveolar defects before and after surgically assisted rapid palatal expansion (SARPE): a CBCT assessment. Dental Press J Orthod 2022; 27:e2219299. [PMID: 35703612 PMCID: PMC9191858 DOI: 10.1590/2177-6709.27.2.e2219299.oar] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/28/2020] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Surgically Assisted Rapid Palatal Expansion (SARPE) promote maxillary expansion in skeletally mature patients. This technique is effective; however, some side effects are still unknown. OBJECTIVES evaluate the presence of alveolar defects (dehiscences and fenestrations) in patients submitted to the SARPE. The null hypothesis tested was: SARPE does not influence the number of dehiscences and fenestrationss. METHODS A retrospective quasi-experiment study of a convenience sample of 279 maxillary teeth, in 29 patients evaluated with Cone Beam Computed Tomography (CBCT) at T1 (before SARPE), T2 (after expansion) and T3 (after retention), was performed. The examined teeth were: canines, first and second premolars, first and second molars. in axial, coronal, and cross-sectional views. The evaluations involved viewing slices from mesial to distal of the buccal roots. RESULTS All statistical analyses were performed using SAS 9.3 and SUDAAN softwares. Alpha used in the study was 0.05. Alveolar defects increased statistically from T1 (69.0%) to T2 (96.5%) and T3 (100%). Dehiscences increased 195% (Relative Risk 2.95) at the end of expansion (T2). After retention (T3), individuals were on average 4.34 times more likely to develop dehiscences (334% increase). Fenestrations did not increase from T1 to T2 (p = 0.0162, 7.9%) and decreased from T2 to T3 (p = 0.0259, 4.3%). Presence of fenestrations at T1 was a significant predictor for the development of dehiscences in T2 and T3. Dehiscences increased significantly in all teeth, except second molars. CONCLUSION The null hypothesis was rejected. After SARPE the number of dehiscences increased and fenestrations decreased. Previous alveolar defects were predictor for dehiscences after SARPE.
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Affiliation(s)
- Fábio Lourenço Romano
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, área de Ortodontia (Ribeirão Preto/SP, Brazil)
| | - Cássio Edward Sverzut
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Cirurgia e Traumatologia Buco-Maxilo-Facial e Periodontia, área de Cirurgia (Ribeirão Preto/SP, Brazil)
| | - Alexandre Elias Trivellato
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Cirurgia e Traumatologia Buco-Maxilo-Facial e Periodontia, área de Cirurgia (Ribeirão Preto/SP, Brazil)
| | - Maria Conceição Pereira Saraiva
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, área de Epidemiologia (Ribeirão Preto/SP, Brazil)
| | - Tung Tahan Nguyen
- University of North Carolina, School of Dentistry, Department of Orthodontics (Chapel Hill, USA)
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da Silva Oliveira S, de Carvalho PHM, Sverzut CE, Trivellato AE. Does the type of sagittal split ramus osteotomy influence fixation strength? Evaluation of the mechanical behavior of two types of fixation used in three types of sagittal split ramus osteotomy. Oral Maxillofac Surg 2022; 26:633-639. [PMID: 35022847 DOI: 10.1007/s10006-022-01038-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/04/2022] [Indexed: 10/19/2022]
Abstract
PURPOSE This study compared the mechanical behavior of two fixation techniques used in three sections representing the sagittal split ramus osteotomy (SSRO) in polyurethane replicas that were divided into groups, according to type of section, and sub-groups according to type of fixation, simulating 11-mm advancement and 6º clockwise mandibular rotation. METHODS Loads were applied in two regions, aiming at progressive application and consequent strength value, measured in kilogram-force in displacements of 1, 3, 5, and 7 mm, from the load application tip. Shapiro-Wilk test was performed, followed by two-way analysis of variance (ANOVA-2 way), and Bonferroni's multiple comparison. RESULTS The results showed no statistically significant difference in the type of section and type of fixation used when load was applied to the inter-incisor region. However, when load was applied to the first molar region, statistically significant difference was observed in 1-mm displacement, in which section described by Epker with two modifications showed greater strength, regardless of type of fixation used (p = 0.007). CONCLUSION In the application of load in the inter-incisor region, there was no statistical difference between the type of osteotomy and the type of fixation used. When applying loads to molars, there was a difference for the type of osteotomy, where the Epker osteotomy with 2 modifications presented greater resistance, regardless of the type of fixation used.
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Affiliation(s)
- Soraya da Silva Oliveira
- School of Dentistry of Ribeirão Preto (FORP-USP), University of São Paulo, Avenida Do Café, S/NRibeirão Preto, São Paulo, 14040-904, Brazil
| | - Pedro Henrique Mattos de Carvalho
- School of Dentistry of Ribeirão Preto (FORP-USP), University of São Paulo, Avenida Do Café, S/NRibeirão Preto, São Paulo, 14040-904, Brazil
| | - Cássio Edvard Sverzut
- School of Dentistry of Ribeirão Preto (FORP-USP), University of São Paulo, Avenida Do Café, S/NRibeirão Preto, São Paulo, 14040-904, Brazil
| | - Alexandre Elias Trivellato
- School of Dentistry of Ribeirão Preto (FORP-USP), University of São Paulo, Avenida Do Café, S/NRibeirão Preto, São Paulo, 14040-904, Brazil.
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Romano F, Sverzut CE, Trivellato AE, Saraiva MCP, Nguyen TT. Surgically assisted rapid palatal expansion (SARPE): three-dimensional superimposition on cranial base. Clin Oral Investig 2022; 26:3885-3897. [PMID: 35013784 DOI: 10.1007/s00784-021-04355-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 12/29/2021] [Indexed: 11/03/2022]
Abstract
OBJECTIVES To evaluate dental and skeletal changes caused by surgically assisted rapid palatal expansion (SARPE) using the superimposition of three-dimensional cone-beam computed tomography (CBCT) images on the cranial base. MATERIAL AND METHODS This is a retrospective quasi-experiment before-and-after study using a convenience sample. Twenty-four adult patients (13 male and 11 female) were evaluated before SARPE (T0), immediately after expansion (T1), and after 6 months of retention (T2). CBCT scans were superimposed on the anterior cranial base using voxel-based registration. Measurements from different reference points were used for comparisons between times. RESULTS At T1, all teeth had significant buccal tipping. At T2, most teeth remained in the same position as at T1, except the first premolar and the first molar, whose buccal roots moved slightly. The amount of bony expansion was 65 to 70% of the amount of tooth movement. The A point and maxillary incisors moved anteriorly from T0 to T1 and T2 (p < 0.0001). Inter-nasal distance had increased significantly at T1 (p < 0.0001) and remained stable at T2 (p = 0.478). No expansion was achieved at the zygomatic arch (p = 0.114). CONCLUSION SARPE promoted substantial buccal tipping of posterior teeth and some bone displacement; it also moved the maxilla and teeth forward and increased nasal width. CLINICAL RELEVANCE No other clinical studies have evaluated dental and skeletal changes caused by SARPE using superimposition of 3D CBCT images on the cranial base. This study findings may help clinical dentists plan treatments using safe and reliable information.
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Affiliation(s)
- Fábio Romano
- Department of Pediatric Dentistry, Orthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil. .,Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA.
| | - Cássio Edvard Sverzut
- Department of Oral & Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral & Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Maria Conceição Pereira Saraiva
- Department of Pediatric Dentistry, Epidemiology, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Tung T Nguyen
- Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
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Santos JGL, Montezuma T, Perez CS, Sverzut CE, Trivellato AE, Guirro ECDO. Body postural realignment in the first 2 months after orthognathic surgery. Am J Orthod Dentofacial Orthop 2021; 159:e281-e290. [PMID: 33487498 DOI: 10.1016/j.ajodo.2020.10.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 08/01/2020] [Accepted: 10/01/2020] [Indexed: 12/12/2022]
Abstract
INTRODUCTION This study aimed to assess the static posture in patients with Angle Class II and III malocclusions in the first 2 months after orthognathic surgery. METHODS This was a longitudinal observational study. Eligible participants were adult patients who had an indication of orthognathic surgery (bilateral sagittal split osteotomy of the maxilla and/or mandible, can be associated or not with genioplasty). Thirty-five patients were evaluated from the orthognathic surgery group (OSG) and control group (CG). Measurements in OSG were performed at 3 time points: preoperative orthognathic surgery (P0), first postoperative month (P1), and second postoperative month (P2). Static posture was evaluated using the PostureScreen Mobile (PostureCo Inc, Trinity, Fla) application in 4 views. RESULTS Patients with Angle Class II malocclusion in the OSG evidenced a tendency to a left hip translation at P1 with a significant difference at P2 in the anterior view (P = 0.052). In the right lateral view, patients with Angle Class II malocclusion in the OSG at P1 presented an accentuated anterior shoulder translation when compared with CG (P <0.001). At P1, patients with Angle Class II malocclusion in the OSG showed a significant anterior knee translation compared with the CG and OSG at P0 and P2 (P <0.001 for all). Patients in the OSG with Angle Class III malocclusion presented an average posterior head translation in the right lateral view at P1 when compared with those in the CG and OSG at P0, who presented an anterior translation (P = 0.0008). CONCLUSIONS These findings suggest a realignment of static posture in the first 2 months after orthognathic surgery.
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Affiliation(s)
- Joselia Gomes Lima Santos
- Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Thais Montezuma
- Postgraduate Program in Rehabilitation and Functional Performance, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Carla Silva Perez
- Postgraduate Program in Rehabilitation and Functional Performance, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cassio Edvard Sverzut
- Department of Buccomaxillofacial Surgery, Traumatology, and Periodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre Elias Trivellato
- Department of Buccomaxillofacial Surgery, Traumatology, and Periodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Augusto-Neto RT, Marinheiro BH, Silveira HA, Polanco XBJ, León JE, Trivellato AE, Sverzut CE. Complex odontoma restricting mouth opening: an unusual clinical presentation and surgical management. Int J Health Sci (Qassim) 2021; 15:60-63. [PMID: 34548864 PMCID: PMC8434844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Odontomas are common benign odontogenic tumors, being often detected on routine radiographs during the first two decades of life. Rarely, odontoma can interfere with jaw movements, causing mouth opening limitation. A 28-year-old male patient was referred complaining of restriction of mouth opening and mandibular movements, which started 6 months ago. Clinical examination revealed a painless increase of volume on the right maxilla, which interfered the mandibular movements, being associated with pain in these attempts. A well-defined, oval radiopaque lesion in close relationship with the impacted maxillary right third molar was detected in tomographic reconstructions. A surgical excision of the lesion was performed, and microscopy revealed complex odontoma. After 4 months of follow-up, the patient achieved adequate mouth opening and recovered mandibular movements. In the current case, the lesion was placed in a difficult access site, which directly interfered with the displacement of coronoid process. Odontoma should be included in the differential diagnosis when assessing causes of restricted mouth opening.
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Affiliation(s)
- Renato Torres Augusto-Neto
- Department of Oral and Maxillofacial Surgery and Periodontology, Oral and Maxillofacial Surgery, Ribeirão Preto Dental School (FORP/USP); University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Bruno Henrique Marinheiro
- Department of Oral and Maxillofacial Surgery and Periodontology, Oral and Maxillofacial Surgery, Ribeirão Preto Dental School (FORP/USP); University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Heitor Albergoni Silveira
- Department of Stomatology, Public Oral Health, and Forensic Dentistry, Oral Pathology, Ribeirão Preto Dental School (FORP/USP); University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Xiomara Beatriz Jimenez Polanco
- Department of Stomatology, Public Oral Health, and Forensic Dentistry, Oral Pathology, Ribeirão Preto Dental School (FORP/USP); University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Jorge Esquiche León
- Department of Stomatology, Public Oral Health, and Forensic Dentistry, Oral Pathology, Ribeirão Preto Dental School (FORP/USP); University of São Paulo, Ribeirão Preto, São Paulo, Brazil,Address for correspondence: Jorge Esquiche León, Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, Oral Pathology, Ribeirão Preto, Dental School, University of São Paulo, Avenida do Café, S/N, Ribeirão Preto, São Paulo, 14040-904, Brazil. Phone: +55-16 33154063. E-mail:
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, Oral and Maxillofacial Surgery, Ribeirão Preto Dental School (FORP/USP); University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, Oral and Maxillofacial Surgery, Ribeirão Preto Dental School (FORP/USP); University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Paredes SY, Silveira HA, Almeida LY, Silva EV, Trivellato AE, Sverzut CE, León JE. Exuberant hypercementosis mimicking cementoblastoma. JBPML 2021. [DOI: 10.5935/1676-2444.20210046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Dias RR, Takeshita WM, Sverzut AT, Trivellato AE, Sverzut CE. Linear analysis of the nasal septum in patients treated with surgically assisted rapid maxillary expansion. Am J Orthod Dentofacial Orthop 2020; 159:71-80. [PMID: 33234461 DOI: 10.1016/j.ajodo.2019.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 11/01/2019] [Accepted: 11/01/2019] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Surgically assisted rapid maxillary expansion is a widely used surgical procedure for resolving transverse maxillary occlusal changes in patients with bone maturity. However, few studies about the postoperative morphologic alterations in the nasal cavity in its inferior portion and the nasal septum positioning exist. METHODS The linear nasal septum measurements of 26 adult patients treated with surgically assisted rapid maxillary expansion from 2009 to 2013 were assessed through a retrospective analysis of cone-beam computed tomographies, in Digital Imaging and Communications in Medicine files, through the Dolphin Imaging program (Dolphin Imaging and Management Solutions, Chatsworth, Calif), aimed to identify significant changes during 3 time periods of the treatment: preoperative, immediately after the palatal expansion device locking (immediate postoperative), and 6-months postoperative (late postoperative). The analyses were performed in the inferior third of the nasal septum, from 4 equidistant points in anteroposterior position and height, using fixed cranial references for lateral measures of displacement. RESULTS No significant difference was found between preoperative, immediate postoperative, and late postoperative measurements in the 4 fixed nasal septum measurements, applying the analysis of variance test with a significance level of 5%. Comparing the surgical times alone, we found no statistically significant difference between the right and left sides applying the Student t test, which also showed symmetry in the nasal septum. CONCLUSIONS The measurements of the nasal septum did not change in the different surgical times throughout their inferior extension, and they remained symmetrical throughout patients' follow-up period.
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Affiliation(s)
- Rafael Rodrigues Dias
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | - Alexander Tadeu Sverzut
- Division of Oral and Maxillofacial Surgery, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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Silveira HA, Sousa LM, Silva EV, Almeida LKY, Sverzut CE, Trivellato AE, León JE. Primary intraosseous CD9-positive B-cell lymphoblastic lymphoma of the maxilla affecting a pediatric patient: Immunohistochemical and in situ hybridization analysis. Oral Oncol 2020; 108:104910. [PMID: 32771332 DOI: 10.1016/j.oraloncology.2020.104910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/15/2022]
Abstract
Lymphoblastic lymphoma (LBL) is a clinically aggressive disease, representing approximately 2% of all non-Hodgkin lymphoma cases. In the oral and maxillofacial (OMF) region, approximately 39 cases, diagnosed as LBL, acute lymphoblastic leukemia (ALL) or ALL/LBL, have been reported to date. Noteworthy, the CD9 expression, which indicates a poor outcome in ALL, has not been reported in LBL and lymphoblastic neoplasms of the OMF region. Herein, we report an additional maxillary intraosseous B-cell LBL, affecting a 14-year-old girl, which also showed positivity for CD9, Bcl-6 and MUM1/IRF4. Aiming at diagnostic and prognostic criteria, further studies focusing CD9 expression in LBL is recommended.
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Affiliation(s)
- Heitor Albergoni Silveira
- Oral Medicine, Department of Diagnosis and Surgery, Araraquara Dental School, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil; Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Lucas Moura Sousa
- Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Evânio Vilela Silva
- Oral Medicine, Department of Diagnosis and Surgery, Araraquara Dental School, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil; Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Lana Kei Yamamoto Almeida
- Department of Pediatric Dentistry, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cassio Edvard Sverzut
- Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre Elias Trivellato
- Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Jorge Esquiche León
- Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, Ribeirão Preto Dental School (FORP/USP), University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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de Carvalho PHM, Oliveira SDS, Favaro M, Sverzut CE, Trivellato AE. Which type of method shows the best mechanical behavior for internal fixation of bilateral sagittal split osteotomy in major advancements with clockwise rotation? Comparison of four methods. Oral Maxillofac Surg 2020; 25:27-34. [PMID: 32661574 DOI: 10.1007/s10006-020-00883-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 07/07/2020] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of the present study was to evaluate the four methods for bilateral sagittal osteotomy fixation. METHODS In this study, 56 replicas of whole mandibles made of rigid polyurethane were used. After simulation of major advancement (11 mm) with clockwise rotation of the mandible (6o) in relation to the occlusal plane, the bone segments were fixed with plates and screws of the 2.0-mm system on both the right and left sides: group I, double "H" plate; group II, two mini-plates; group III, "hybrid technique"; and group IV, three bicortical screws in the "inverted L" pattern. The mandibles were submitted to load on the central incisors and right first molar. RESULTS The mean value of group I was higher than those of groups IV and II in the displacement of 1 mm (F = 4.705; p = 0.010) with load on the incisor. The mean value of group III was higher than those of groups I and II in the displacement of 1 mm (F = 5.166; p = 0.007) and 3 mm (F = 5.166; p = 0.007). The mean value of group IV was higher than that of group II (F = 3.142; p = 0.044) with load on the molar. CONCLUSION Therefore, after the analyses, the hybrid technique was the one that showed the best results.
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Affiliation(s)
- Pedro Henrique Mattos de Carvalho
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São Paulo, Avenida do Café, S/N, Ribeirão Preto, SP, 14040-904, Brazil
| | - Soraya da Silva Oliveira
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São Paulo, Avenida do Café, S/N, Ribeirão Preto, SP, 14040-904, Brazil
| | - Matheus Favaro
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São Paulo, Avenida do Café, S/N, Ribeirão Preto, SP, 14040-904, Brazil
| | - Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São Paulo, Avenida do Café, S/N, Ribeirão Preto, SP, 14040-904, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto (FORP/USP), University of São Paulo, Avenida do Café, S/N, Ribeirão Preto, SP, 14040-904, Brazil.
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Marinheiro BH, Araújo RTE, Sverzut TFV, Trivellato AE, Sverzut CE. Migration and surgical retrieval of a broken dental needle: a literature review and case report. Gen Dent 2019; 67:34-37. [PMID: 31658022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Although the incidence of broken needles in dental practice is minimal, needle breakage can occur as a result of manufacturing defects, inadequate patient management, or poor practitioner technique. Retrieval of a broken needle is justified not only because of the potential for needle migration but also because of psychological and medicolegal considerations. This case report describes the surgical removal of a dental needle that fractured during an attempt at local anesthesia. Identifying the precise location of the broken needle fragment and its relationship with the surrounding bones, vessels, and nerves is essential to designing an adequate treatment plan. If surgical retrieval is indicated, it should be performed immediately, especially in cases in which the needle fragment has not been bent or deformed. In the present case, the use of C-arm fluoroscopy aided the surgical removal while saving time and reducing the cost of treatment.
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Silva RN, Silveira HA, Almeida LY, Colturato CNB, Trivellato AE, Sverzut CE, León JE. Gingival carcinoma cuniculatum mimicking a reactive/inflammatory process. Jornal Brasileiro de Patologia e Medicina Laboratorial 2019. [DOI: 10.5935/1676-2444.20190045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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De Almeida LY, Dos Santos JL, Sverzut CE, Trivellato AE, De Almeida LKY, Ribeiro-Silva A, León JE. Intraoral Pigmented Low-Grade Adenocarcinoma, Not Otherwise Specified: an Immunohistochemical Study. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Miotto LN, Ferrisse TM, Colturato CBN, Almeida LY, Trivellato AE, Sverzut CE, León JE. Solitary Central Osteoma of the Maxilla: a Case Report. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Cavalieri-Pereira L, Spagnol G, Sverzut CE, de Moraes M, Trivellato AE. Resistance of four fixation techniques used to treat subcondylar fractures. Oral Maxillofac Surg 2018; 22:91-96. [PMID: 29344821 DOI: 10.1007/s10006-018-0675-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 01/09/2018] [Indexed: 06/07/2023]
Abstract
OBJECTIVE This study aimed to evaluate the resistance of four fixation techniques used to treat subcondylar fractures. The following techniques were evaluated: fixation with one 4-hole single straight plate; fixation with one 2-mm 4-hole system plate and one 1.5-mm 3-hole system plate; fixation with two 2-mm plates with a 3-hole anterior plate; and fixation with two 2-mm plates with four holes each. STUDY DESIGN Each fixation technique was subjected to a resistance test. The load values were measured when displacement of 1, 2, and 5 mm was reached. Load values were compared for statistically significant differences using analysis of variance (ANOVA; p < 0.5) and Tukey's test. RESULTS Statistically significant differences were observed, when the load was applied to the first molar on the side of the fracture. The group treated with a 4-hole, 2-mm, one plate system showed resistance to lower load values than the groups treated with two plates in any combination. CONCLUSIONS When the fracture was fixed using two plates, regardless of the kind of plates used, no statistically significant difference between the groups was observed. However, two plate systems showed better resistance than one plate systems.
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Affiliation(s)
- Lucas Cavalieri-Pereira
- Division of Oral and Maxillofacial Surgery, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| | - Guilherme Spagnol
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café, s/n-Campus USP, 14090-904, Ribeirão Preto, São Paulo, Brazil
| | - Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café, s/n-Campus USP, 14090-904, Ribeirão Preto, São Paulo, Brazil
| | - Márcio de Moraes
- Division of Oral and Maxillofacial Surgery, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café, s/n-Campus USP, 14090-904, Ribeirão Preto, São Paulo, Brazil.
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Yamaji MAK, Oliveira Neto PJD, Ribeiro MDC, Pereira LC, Morais MD, Sverzut CE, Trivellato AE. Evaluation of in vitro resistance of different 2.0-mm titanium plates on the mandibular angle sectioning. Oral Maxillofac Surg 2016; 19:65-70. [PMID: 25015878 DOI: 10.1007/s10006-014-0456-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 07/01/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The purpose of this study was to compare, by mechanical in vitro testing, a regular 5-hole plate and a long 4-hole plate with a regular 4-hole plate, applied to stabilize a simulated mandibular angle fracture. STUDY DESIGN The plates from the 2.0-mm titanium-based system were adapted and stabilized passively in the same site in both groups using four screws, 6 mm long. During the resistance-to-load test, the force was applied perpendicular to the occlusal plane at three different points: first molar at the plated side, first molar at the contralateral side, and between the central incisors. RESULTS The regular 5-hole plates and longer 4-hole plates were superior to the regular 4-hole plates. Furthermore, no statistically significant difference was found between the regular 5-hole plates and long 4-hole plate. CONCLUSIONS The length and shape of plates did not interfere with the effectiveness to stabilize the fragments. OBJECTIVE The purpose of this study was to compare, by mechanical in vitro testing, a regular 5-hole plate and a long 4-hole plate with a regular 4-hole plate, applied to stabilize a simulated mandibular angle fracture.Study design The plates from the 2.0-mm titanium-based system were adapted and stabilized passively in the same site in both groups using four screws, 6 mm long. During the resistance-to-load test, the force was applied perpendicular to the occlusal plane at three different points: first molar at the plated side, first molar at the contralateral side, and between the central incisors. RESULTS The regular 5-hole plates and longer 4-hole plates were superior to the regular 4-hole plates. Furthermore, no statistically significant difference was found between the regular 5-hole plates and long 4-hole plate.Conclusions The length and shape of plates did not interfere with the effectiveness to stabilize the fragments.
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Monnazzi MS, Gabrielli MAC, Gabrielli MFR, Trivellato AE. Mandibular angle fractures: a comparative study between one- and two-plate fixation. Dent Traumatol 2016; 33:121-125. [PMID: 27900824 DOI: 10.1111/edt.12312] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND/AIM The mandibular angle fracture is a challenging fracture to manage. Over time, the literature has shown many types of treatment modalities and different kinds of internal fixation. The aim of this study was to evaluate the outcomes and complications of mandibular angle fractures managed by Champy's technique and two-plate fixation, over a period of 20 years. MATERIAL AND METHODS The files of 149 patients with 155 angle fractures fulfilled the inclusion criteria and were chosen for this study. Data were collected regarding gender, age, race, date of trauma, addictions, etiology, signs and symptoms, fracture management, and complications. RESULTS Prevalence was higher in males (82%), Caucasians (62%), and during the third decade of life (62%). Mean age was 26.5 years. The main cause was interpersonal violence, and the mean follow-up period was 232 days. The main signs and symptoms were pain, edema, and mouth-opening restriction. The most often associated fracture involved the mandibular condyle, and the most common complication was infection. CONCLUSION There was no difference between the two modalities of treatment. However, the one-plate fixation technique had fewer complications.
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Affiliation(s)
- Marcelo Silva Monnazzi
- Dental School of Araraquara, UNESP, Araraquara, Brazil.,Periodontology and Maxillofacial Surgery Department, Dental School of Ribeirão Preto, USP, Ribeirão Preto, Brazil
| | | | | | - Alexandre Elias Trivellato
- Periodontology and Maxillofacial Surgery Department, Dental School of Ribeirão Preto, USP, Ribeirão Preto, Brazil
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Araújo RTE, Sverzut AT, Trivellato AE, Sverzut CE. Retrospective Analysis of 129 Consecutive Zygomatic Implants Used to Rehabilitate Severely Resorbed Maxillae in a Two-Stage Protocol. Int J Oral Maxillofac Implants 2016; 32:377–384. [PMID: 27632155 DOI: 10.11607/jomi.5136] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
PURPOSE To report on the clinical outcome of 129 zygomatic implants placed in 37 patients with severely resorbed partially or completely edentulous maxillae. MATERIALS AND METHODS Patients who received zygomatic implants between 2007 and 2014 were included in this retrospective analysis. All patients were treated using the same surgical protocol, the sinus slot technique. The following data were recorded: sex, age, race, medical history, etiology, addictions, degree of bone atrophy, type and size of zygomatic implants, number of implants placed, type of prosthesis, survival rate, and success of implants and complications. Follow-up included standardized clinical and tomography examinations. RESULTS Thirty-seven consecutive patients (25 women, 12 men; mean age 55.64 years [range 40 to 77 years]) were treated. All were in need of oral reconstruction and had maxillary atrophy that warranted zygomatic implant placement. One hundred twenty nine zygomatic implants were placed in these 37 patients. Two of the implants failed, resulting in a cumulative survival rate of 98.44%. Maxillary sinusitis was the most common complication found (21.62%); however, neither of the implant failures was related to sinusitis or smoking. CONCLUSION The zygomatic implant is a reliable option for treatment of the severely resorbed maxilla.
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Moura LB, Spin-Neto R, Sverzut CE, Monnazzi MDS, Trivellato AE, Gabrielli MAC, Pereira-Filho VA. Evaluation of the palatal split pattern in surgically rapid maxillary expansion-comparison of two techniques. Oral Maxillofac Surg 2016; 20:255-258. [PMID: 27154514 DOI: 10.1007/s10006-016-0562-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/02/2016] [Indexed: 06/05/2023]
Abstract
PURPOSE Surgically assisted rapid maxillary expansion is performed to correct transverse deficiencies of the maxilla, and it is indicated in specific clinical situations. The literature presents different opinions in several aspects, mainly regarding the effect of disjunction of the pterygoid plates. The aim of this study was to evaluate the pattern of maxillary expansion obtained with two surgical techniques, with and without disjunction of the pterygoid plates. METHODS Twenty patients treated with surgically assisted rapid maxillary expansion for correction of transversal discrepancies were included in this retrospective study and divided into two groups: (G1) patients operated without disjunction of pterygoid plates and (G2) patients treated with release of the pterygoid plates. RESULTS There were seven male and 13 female patients, and the mean age was 29.9 years. Cone beam computed tomography images obtained after final activation of the expansion device were evaluated and complete disjunction of the midpalatal suture (type I) was present in 75 % of the patients whereas incomplete disjunction of the midpalatal suture (type II) was observed in 25 %. Chi-square test showed no statistically significant difference between groups (p = 0.606). CONCLUSION No difference was found in relation to the maxillary disjunction pattern irrespective of the treatment given to pterygoid plates.
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Affiliation(s)
- Lucas Borin Moura
- Division of Oral and Maxillofacial Surgery, Department of Diagnosis and Surgery, Dental School at Araraquara - Unesp, Rua: Humaitá, 1680, Araraquara, SP, 14801-903, Brazil.
| | - Rubens Spin-Neto
- Section of Oral Radiology, Department of Dentistry, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodonthology, Dental School at Ribeirão Preto-USP, Ribeirão Preto, SP, Brazil
| | - Marcelo da Silva Monnazzi
- Division of Oral and Maxillofacial Surgery, Department of Diagnosis and Surgery, Dental School at Araraquara - Unesp, Rua: Humaitá, 1680, Araraquara, SP, 14801-903, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodonthology, Dental School at Ribeirão Preto-USP, Ribeirão Preto, SP, Brazil
| | - Marisa Aparecida Cabrini Gabrielli
- Division of Oral and Maxillofacial Surgery, Department of Diagnosis and Surgery, Dental School at Araraquara - Unesp, Rua: Humaitá, 1680, Araraquara, SP, 14801-903, Brazil
| | - Valfrido Antonio Pereira-Filho
- Division of Oral and Maxillofacial Surgery, Department of Diagnosis and Surgery, Dental School at Araraquara - Unesp, Rua: Humaitá, 1680, Araraquara, SP, 14801-903, Brazil
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Almeida LY, Trindade PAK, Sverzut AT, Sverzut CE, Trivellato AE, Oliveira-Santos C, León JE. Mandibular Osteolytic Lesion Associated with Exuberant Hyaline Ring Granuloma Reaction. Med Princ Pract 2016; 25:391-3. [PMID: 26673169 PMCID: PMC5588404 DOI: 10.1159/000443376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 12/15/2015] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To report an unusual case of oral hyaline ring granuloma (HRG) that caused an extensive osteolytic lesion. CLINICAL PRESENTATION AND INTERVENTION A 22-year-old female was referred to our hospital with a large expansile cystic lesion in the left mandibular ramus associated with a clinically visible, partially erupted third molar. A diagnosis of paradental cyst was made. After marsupialization of the lesion, histopathological analysis of the surgical specimen showed an unusual exuberant HRG reaction supported by scarce fibrous stroma. CONCLUSION This was a case of exuberant HRG reaction that caused extensive bone destruction.
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Affiliation(s)
- Luciana Yamamoto Almeida
- Oral Pathology, Department of Oral Diagnosis, Dentistry School of Piracicaba, University of Campinas (FOP/UNICAMP), Piracicaba, Ribeirão Preto, Brazil
- *Luciana Yamamoto Almeida, Oral Pathology, Department of Oral Diagnosis, Dentistry School of Piracicaba, University of Campinas (FOP/UNICAMP), Av. Limeira, n. 901, Piracicaba, SP CEP 13414-903 (Brazil), E-Mail
| | - Paulo Alceu Kiemle Trindade
- Department of Oral and Maxillofacial Surgery and Periodontology, University of São Paulo, School of Dentistry of Ribeirão Preto (FORP/USP), Ribeirão Preto, Brazil
| | - Alexander Tadeu Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, University of São Paulo, School of Dentistry of Ribeirão Preto (FORP/USP), Ribeirão Preto, Brazil
| | - Cassio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, University of São Paulo, School of Dentistry of Ribeirão Preto (FORP/USP), Ribeirão Preto, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, University of São Paulo, School of Dentistry of Ribeirão Preto (FORP/USP), Ribeirão Preto, Brazil
| | - Christiano Oliveira-Santos
- Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, University of São Paulo, School of Dentistry of Ribeirão Preto (FORP/USP), Ribeirão Preto, Brazil
| | - Jorge Esquiche León
- Oral Pathology, Department of Stomatology, Public Oral Health, and Forensic Dentistry, University of São Paulo, School of Dentistry of Ribeirão Preto (FORP/USP), Ribeirão Preto, Brazil
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Sverzut CE, Trivellato AE, Sverzut AT, Araújo RTE, Jacob ES. Distal Movement of Lower Molars with Miniplate Anchorage. J Clin Orthod 2015; 49:654-658. [PMID: 26562395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Cassio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Av. do Cafe, s/n-Campus USP, 14040-904 Ribeirao Preto, Sao Paulo, Brazil.
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Av. do Cafe, s/n-Campus USP, 14040-904 Ribeirao Preto, Sao Paulo, Brazil
| | - Alexander Tadeu Sverzut
- Department of Oral Diagnosis, Oral and Maxillofacial Division, School of Dentistry of Piracicaba, University of Campinas, Sao Paulo
| | - Rafael Tajra Evangelista Araújo
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo
| | - Eduardo Santana Jacob
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo
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Sverzut CE, Trivellato AE, Sverzut AT. Use of a titanium mesh "shelter" combined with the soft tissue matrix expansion (tent pole) grafting in the reconstruction of a severely resorbed edentulous mandible. Technical note. Braz Dent J 2015; 26:193-7. [PMID: 25831113 DOI: 10.1590/0103-6440201301957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 11/19/2014] [Indexed: 11/22/2022] Open
Abstract
Patients wearing complete dentures for a long time usually exhibit lack of bone and keratinized mucosa in the bearing area due to bone resorption. The patients suffering from this phenomenon usually have unstable and non-retentive complete denture, which result in constant trauma to the mucosa, pain, functional limitations and worsening of facial esthetics. An innovative technique has been described in which a novel surgical approach using osseointegrated dental implants as "tent poles" was applied concomitant with particulate autogenous bone graft. The authors claim that the control and maintenance of the surgically expanded soft tissue volume should prevent graft resorption in the long term. Nevertheless, resorption of the bone graft is usually more significant where the bone mass is poorer, in the mandibular body. This paper describes a case of severely resorbed edentulous mandible in which the "tent pole" technique was applied with some modifications. Use of the titanium mesh "shelters" and two additional implants was effective in "protecting" the bone graft in the posterior portion of the mandibular body increasing bone mass volume in this area. Furthermore, we believe that this kind of graft "protection" on the whole residual alveolar ridge can increase the width of bone mass gain optimizing the "tent pole" technique.
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Affiliation(s)
- Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, USP - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Alexandre Elias Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, USP - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Alexander Tadeu Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, USP - University of São Paulo, Ribeirão Preto, SP, Brazil
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Veronez B, Matos FPD, Monnazzi MS, Sverzut AT, Sverzut CE, Trivellato AE. Maxillofacial infection. A retrospective evaluation of eight years. Braz J Oral Sci 2014. [DOI: 10.1590/1677-3225v13n2a04] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Sverzut CE, Trivellato AE, Sverzut AT, Azenha MR, Yamaji MAK, Pepato AO. Retained Third Molars Removal in a Severely Resorbed Edentulous Mandible. A Case Report. Braz Dent J 2013; 24:532-6. [DOI: 10.1590/0103-6440201302018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Indexed: 11/22/2022] Open
Abstract
The presence of asymptomatic third molars can represent a potential problem in the mandible when these teeth are retained and the patient has lost all normally erupted teeth. Once the mandibular first and second molars are removed, the mandibular body becomes weaker with time, increasing the complexity, morbidity and incidence of complication in the surgical procedure to remove the retained third molar. This paper reports a case where the mandibular third molars retained in a severely resorbed mandible were removed in a 54-year-old female patient. The treatment plan was based on the safe surgical removal of the teeth and prosthetic rehabilitation with an implant-supported milled bar overdenture and a bone-mucous-supported complete denture in the mandibular and maxillary arch, respectively. If the removal of a retained third molar is indicated in a severely resorbed edentulous mandible, the treatment plan must involve not only preventive measures in order to avoid mandible fracture during or after tooth removal, but also alternatives that allow an adequate mandibular rehabilitation.
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Pepato AO, Palinkas M, Regalo SCH, Ribeiro MC, Souza TAS, Siéssere S, de Sousa LG, Sverzut CE, Trivellato AE. Analysis of masticatory efficiency by electromyographic activity of masticatory muscles after surgical treatment of zygomatic-orbital complex fractures. J Stomat Occ Med 2013. [DOI: 10.1007/s12548-013-0078-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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de Medeiros EHP, Pepato AO, Sverzut CE, Trivellato AE. Orbital abscess during endodontic treatment: a case report. J Endod 2012; 38:1541-3. [PMID: 23063232 DOI: 10.1016/j.joen.2012.06.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 06/25/2012] [Accepted: 06/30/2012] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Orbital infections may result in permanent morbidity because of the severity of infection. Furthermore, delayed diagnosis or treatment of orbital infections can lead to intracranial complications and even death. The majority of orbital infections develop from paranasal sinus infections, cutaneous infections, and periorbital trauma. Dacryocystitis and odontogenic infection are also accounted as potential etiologies but are scarcely reported in scientific literature. METHODS The patient revealed a history of having endodontic treatment on left maxillary second molar performed 2 weeks previously. Moreover, she exhibited signs of facial pain accompanied by sinusitis symptoms, fever, and nasal obstruction the week after this endodontic procedure. The patient presented proptosis, impairment of ocular motility to the right side, facial tenderness, palpebral erythema, and referred decreased visual acuity. Intraoral exam revealed root fragments of left maxillary first molar and an extensive carious lesion on left maxillary second molar. Computed tomography enabled the observation of frontal sinus, left-sided maxillary, opacity of sphenoidal and ethmoidal sinuses, and apical lesion of left maxillary first and second molars, all suggesting the presence of their apex in the maxillary sinus. In addition, images revealed ocular proptosis and presence of high-density areas suggestive of pus in the medial orbital wall region. RESULTS The patient was submitted to surgical drainage under general anesthesia approximately 8 hours after the clinical evaluation. CONCLUSIONS Early detection of orbital infection, proper diagnostic tests, and treatment may provide successful outcomes of this rarely occurring disease.
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Affiliation(s)
- Eduardo Henrique Pantosso de Medeiros
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Pepato AO, Yamaji MAK, Sverzut CE, Trivellato AE. Lower third molar infection with purulent discharge through the external auditory meatus. Case report and review of literature. Int J Oral Maxillofac Surg 2011; 41:380-3. [PMID: 22004947 DOI: 10.1016/j.ijom.2011.09.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Revised: 07/25/2011] [Accepted: 09/20/2011] [Indexed: 11/18/2022]
Abstract
This manuscript reports an uncommon case of inferior third molar facial abscess with purulent secretion drainage through the left external acoustic meatus. The patient's left external acoustic meatus was filled with a purulent secretion observed on a CT scan. He underwent surgery to drain the facial abscess. Despite facial abscesses being routine occurrences, the literature does not contain many case reports of odontogenic facial abscesses with drainage via the external acoustic meatus. These situations occur in two possible ways: multiple fissures in the anterior wall of the cartilaginous portion of the external acoustic meatus; and congenital defects that are occasionally present in the anterior-superior aspect of the external acoustic meatus, known as the foramen of Huschke, which allow communication between the external acoustic meatus and mandibular fossa. These defects may also predispose the patient to the spread of the infection or tumour from the external auditory canal to the infratemporal fossa and vice versa. No otological sequelae were observed in this case. The authors conclude that the hypothesis of bone malformation cannot be excluded, and affirm that any facial abscess requires appropriate and immediate treatment for adequate resolution, by removing the causal factor and providing systemic support.
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Affiliation(s)
- A O Pepato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Ribeiro MC, Regalo SCH, Oliveira Pepato A, Siéssere S, de Souza LG, Sverzut CE, Trivellato AE. Bite force, electromyography, and mandible mobility during the 6-month period after surgical treatment for isolated fractures of the zygomatico-orbital complex. ACTA ACUST UNITED AC 2011; 111:e1-7. [DOI: 10.1016/j.tripleo.2010.11.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 10/26/2010] [Accepted: 11/08/2010] [Indexed: 10/18/2022]
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Trivellato PFB, Arnez MFM, Sverzut CE, Trivellato AE. A retrospective study of zygomatico-orbital complex and/or zygomatic arch fractures over a 71-month period. Dent Traumatol 2011; 27:135-42. [PMID: 21385315 DOI: 10.1111/j.1600-9657.2010.00971.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND/AIM The aim of this retrospective study was to evaluate the epidemiology, treatment, and complications of zygomatico-orbital complex (ZOC) and/or zygomatic arch (ZA) fractures either associated with other facial fractures or not over a 71-month period. MATERIAL AND METHODS This survey was performed in three hospitals of Ribeirao Preto in Sao Paulo, Brazil, from August 2002 to July 2008. The records of 1575 patients with facial trauma were reviewed. There were 140 cases of ZOC and ZA fractures either associated with other facial fractures or not. Data regarding gender, age, race, addictions, day of trauma, etiology, signs and symptoms, oral hygiene condition, day of initial evaluation, hospital admission, day of surgery, surgery approach, pattern of fractures, treatment performed, post-operative antibiotic therapy, day of hospital discharge, and post-operative complications were collected. The data were subjected to descriptive statistical analyses. RESULTS The most frequent fractures affected Caucasian men and occurred during the fourth decade of life. The most frequent etiology was traffic accident, and symptoms and signs included pain and edema. Type I fractures were the main injury observed, and the treatment of choice was always rigid internal fixation. Post-operative antibiotic therapy was solely employed when there was an indication. Complications were observed in 13.1% of the cases. CONCLUSIONS The treatment protocol yielded suitable post-operative results and also showed success rates comparable to published data around the world.
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Affiliation(s)
- Priscila Faleiros Bertelli Trivellato
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
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Abstract
BACKGROUND Myiasis is the invasion of living tissue of humans and other mammals by eggs or maggots of flies of the order of Diptera. It occurs mainly in the Tropics and is associated with inadequate public and personal hygiene. Oral myiases in an older man appears to be rare. OBJECTIVE To relate a case of oral myiases in a debilitated older man treated by mechanical removal of the maggots, identifying the adult insect that caused the infestation. METHODS The diagnosis of oral myiasis was established by the clinical examination and it was detected that the infestation involved only soft tissue and the sinus cavity. The patient was submitted to two mechanical removal of the visible maggots. RESULTS Total of 110 maggots was removed from the oral cavity of the patient and adult insects was identified as belonging to the Calliphoridae Family, Cochliomyia hominivorax species. The patient died two days after the second procedure by severe systemic complications. CONCLUSIONS The mechanic removal and the identification of the maggots must be adopted as soon as possible to prevent further tissue damage and bacterial infection in cases of oral myiasis. Special attention should be given to the debilitated old patients that are particularly susceptible to oral myiasis infestation.
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Affiliation(s)
- Michel Campos Ribeiro
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil.
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Sverzut CE, Trivellato AE, Sverzut AT, de Matos FP, Kato RB. Removal of a maxillary third molar accidentally displaced into the infratemporal fossa via intraoral approach under local anesthesia: report of a case. J Oral Maxillofac Surg 2009; 67:1316-20. [PMID: 19446223 DOI: 10.1016/j.joms.2008.09.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2008] [Accepted: 09/06/2008] [Indexed: 11/16/2022]
Affiliation(s)
- Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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Abstract
This paper reports a rare case of acute severe orbital abscess manifested 2 days after a facial trauma without bone fracture in a 20-year-old Afro-American female. The symptoms worsened within the 24 h prior to hospital admission resulting in visual disturbances such as diplopia and photophobia. The clinical findings at the first consultation included fever, periorbital swelling and redness, ptosis, proptosis and limitation of ocular movements upwards, downwards, to the right and to the left. Computed tomography scan showed proptosis with considerable soft tissue swelling on the left side and no fracture was evidenced in the facial skeleton, including the zygomatic-orbital complex. After hospital admission and antibiotic therapy intravenously the patient was conducted to the operation room and submitted to incision and drainage under general anesthesia. The orbit was approached thorough both eyelids and the maxillary sinus was reached only through the Caldwell-Luc approach. The postoperative period was uneventful and the rapid improvement of symptoms was remarkable. Visual acuity and ocular motility returned to the normal ranges within 2 days after the surgical intervention. After 12 postoperative days, the patient presented with significative improvement in the ptosis and proptosis, and acceptable scars.
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Sverzut CE, Trivellato AE, Sverzut AT, Luna AHB, Santos TID, Pontes CDB. Rehabilitation of severely resorbed edentulous mandible using the modified visor osteotomy technique. Braz Dent J 2009; 20:419-23. [DOI: 10.1590/s0103-64402009000500011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Accepted: 10/08/2009] [Indexed: 11/21/2022] Open
Abstract
The prosthetic rehabilitation of an atrophic mandible is usually unsatisfactory due to the lack of support tissues, mainly bone and keratinized mucosa for treatment with osseointegrated implants or even conventional prosthesis. The prosthetic instability leads to social and functional limitations and chronic physical trauma decreasing the patient's quality of life. A 53-year-old female patient sought care at our surgical service complaining of impairment of her masticatory function associated with the instability of the lower total prosthetic denture. The clinical and complementary exams revealed edentulism in both arches, while the mandibular arch presented severe reabsorption resulting in denture instability and chronic trauma to the oral mucosa. The proposed treatment plan consisted in the mandibular rehabilitation with osseointegrated implants and fixed Brånemark's protocol prosthesis after mandibular reconstruction applying the modified visor osteotomy technique. The proposed technique offered predictable results for reconstruction of the severely resorbed edentulous mandible and posterior rehabilitation with osseointegrated implants.
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Trivellato AE. Poster 041: In Vitro Resistance Evaluation of the 2.0-mm Fixation System on the Mandibular Angle, Either With or Without Mandibular Base Continuity. J Oral Maxillofac Surg 2008. [DOI: 10.1016/j.joms.2008.05.195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Trivellato AE. Poster 086: A Retrospective Study of the Mandibular Fracture in a 40-Month Period. J Oral Maxillofac Surg 2008. [DOI: 10.1016/j.joms.2008.05.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sverzut CE, Lucas MA, Sverzut AT, Trivellato AE, Beloti MM, Rosa AL, de Oliveira PT. Bone repair in mandibular body osteotomy after using 2.0 miniplate system--histological and histometric analysis in dogs. Int J Exp Pathol 2008; 89:91-7. [PMID: 18336526 DOI: 10.1111/j.1365-2613.2007.00569.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The objective of this study was to evaluate the bone repair along a mandibular body osteotomy after using a 2.0 miniplate system. Nine adult mongrel dogs were subjected to unilateral continuous defect through an osteotomy between the mandibular 3rd and 4th premolars. Two four-hole miniplates were placed in accordance with the Arbeitgeimeinschaft für Osteosynthesefragen Manual. Miniplates adapted to the alveolar processes were fixed monocortically with 6.0-mm-length titanium alloy self-tapping screws, whereas miniplates placed near the mandible bases were fixed bicortically. At 2, 6 and 12 weeks, three dogs were sacrificed per period, and the osteotomy sites were removed, divided into three thirds (Tension Third, TT; Intermediary Third, IT; Compression Third, CT) and prepared for conventional and polarized light microscopy. At 6 weeks, while the CT repaired faster and showed bone union by woven bone formation, the TT and IT exhibited a ligament-like fibrous connective tissue inserted in, and connecting, newly formed woven bone overlying the parent lamellar bone edges. At 12 weeks, bone repair took place at all thirds. Histometrically, proportions of newly formed bone did not alter at TT, IT and CT, whereas significantly enhanced bone formation was observed for the 12-week group, irrespective of the third. The results demonstrated that although the method used to stabilize the mandibular osteotomy allowed bone repair to occur, differences in the dynamics of bone healing may take place along the osteotomy site, depending on the action of tension and compression forces generated by masticatory muscles.
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Affiliation(s)
- Cássio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
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Trivellato AE, Passeri LA. Evaluation of osteotomy fixation changing the number, the extension and the location of the plates. Br J Oral Maxillofac Surg 2006; 44:377-81. [PMID: 16263196 DOI: 10.1016/j.bjoms.2005.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2005] [Accepted: 08/25/2005] [Indexed: 11/30/2022]
Abstract
We used a two-dimensional model that simulated a fractured human mandible to study the extent of load resistance of different plates. We studied 49 bovine ribs in seven groups using varying number (1 or 2), lengths of plates (4 or 6-holes), and location (near the lower or upper border). The number and location of plates had a greater effect on resistance to load than length of plates. The best mean resistance values were achieved by a combination of two parallel plates secured near the lower and upper borders, followed by single plates secured near the upper border. The lowest values were with single plates secured close to the lower border.
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Affiliation(s)
- Alexandre Elias Trivellato
- Oral and Maxillofacial Area, Piracicaba Dental School, State University of Campinas, Unicamp, São Paulo, Brazil.
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Abstract
An unusual case of an impacted right maxillary third molar that was accidentally displaced into the maxillary sinus during exodontia and was surgically retrieved almost 2 years later is described. The tooth was removed under general anesthesia, after maxillary sinus exposure through Caldwell-Luc approach. Postoperative recovery was uneventful. Six months after the retrieval surgery, the maxillary sinus was completely healed and the patient did not present any complaint.
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Affiliation(s)
- Cassio Edvard Sverzut
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Brazil.
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Abstract
Frey's syndrome is the occurrence of hyperesthesia, flushing and warmth or sweating over the distribution of the auriculotemporal nerve and/or greater auricular nerve while eating foods that produce a strong salivary stimulus. Frey's syndrome is also known as auriculotemporal syndrome and gustatory sweating. We present a case of Frey's syndrome after a condylar fracture and its treatment by internal rigid fixation. A review of the literature is provided along with mention of a simple test (Minor's test) that can help in the diagnosis of this syndrome.
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Affiliation(s)
- Cassio Edvard Sverzut
- Department of Oral Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
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