RESUMO
UNLABELLED: According to a research AIM: we carried out the comparative final element analysis of stress in implant construction and the bone surrounding it. The best result showed implants with platform switching and cone interface between implant and abatement. Such combination of elements allows maintaining implant construction stability and decrease the load on cortical bone.
Assuntos
Interface Osso-Implante/fisiopatologia , Dente Suporte/efeitos adversos , Implantação Dentária Endóssea/efeitos adversos , Implantes Dentários/efeitos adversos , Planejamento de Prótese Dentária/efeitos adversos , Análise do Estresse Dentário , Módulo de Elasticidade , Humanos , Modelos TeóricosRESUMO
Class II malocclusions are of interest to the practicing orthodontists since they constitute a significant percentage of the cases they treat. The process of establishing a treatment plan requires an assessment of therapeutic modifiability. The purpose of this article is to provide a perspective on the characteristics, development, etiology and broad treatment consideration in Class II malocclusions.
Assuntos
Má Oclusão Classe II de Angle , Humanos , Má Oclusão Classe II de Angle/diagnóstico , Má Oclusão Classe II de Angle/etiologia , Má Oclusão Classe II de Angle/cirurgia , Ortodontia Corretiva/métodosAssuntos
Carcinoma de Células Escamosas/etiologia , Leucoplasia Oral/diagnóstico , Leucoplasia Oral/terapia , Mucosa Bucal/patologia , Neoplasias Bucais/etiologia , Lesões Pré-Cancerosas/diagnóstico , Carcinoma de Células Escamosas/patologia , Transformação Celular Neoplásica , Humanos , Leucoplasia Oral/classificação , Leucoplasia Oral/complicações , Leucoplasia Oral/patologia , Neoplasias Bucais/patologia , Lesões Pré-Cancerosas/patologia , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
To prove the efficiency of dental implantation in complex treatment of patients with class III malocclusion and partial teeth loss. Nine patients aged 18-35 years with class III malocclusion and partial teeth loss were included in the study. All patients received two-step treatment involving orthodontic correction with two-step implantation and provisional restorations placement followed by orthognatic surgery procedure. The patients were followed-up for three years with no recurrent malocclusion or implant failure revealed, thus proving dental implantation to be useful tool in complex oral rehabilitation of patients with class III malocclusion and partial teeth loss.
Assuntos
Implantação Dentária Endóssea/métodos , Má Oclusão Classe III de Angle/reabilitação , Perda de Dente/reabilitação , Adolescente , Adulto , Implantes Dentários , Humanos , Masculino , Má Oclusão Classe III de Angle/complicações , Má Oclusão Classe III de Angle/cirurgia , Osteotomia de Le Fort , Perda de Dente/complicações , Resultado do Tratamento , Adulto JovemRESUMO
The study involved 152 patients with facial burns consequences (including 118 patients with burns of the mouth). Specific post-burn deformities were revealed: I type - deformity of the anatomical unit caused by scar tissue traction from adjacent regions (the unit itself preserved); II type - distortion caused by single scars without significant tissue defect; III type - post-burn deformities with total or subtotal skin scarring; IV type - tissue defects characterized by loss of anatomical unit with deep anatomical structures down to the bone and possible exposition of the paranasal sinuses and face cavities. Such classification based on the amount of tissue loss dictates the choice of surgical technique, allowing optimal functional and aesthetic treatment results.
Assuntos
Queimaduras/complicações , Queimaduras/reabilitação , Cicatriz/reabilitação , Boca/cirurgia , Adolescente , Adulto , Cicatriz/etiologia , Cicatriz/cirurgia , Procedimentos Cirúrgicos Dermatológicos , Face , Feminino , Humanos , Masculino , Adulto JovemRESUMO
The study focuses on long term results of restorative treatment with dental implant system Liko-M. The study included 503 patients examined and 274 patients treated aged 20-69 with partial or complete teeth loss. The patients were examined and treated at the Department of Maxillofacial and Oral Surgery of Nizhny Novgorod State Medical Academy and in 4 dental practices in Moscow and Nizhny Novgorod. Two-staged implantation method was applied. The treatment met esthetic and functional requirements. Marginal bone resorption was estimated as 0,1 to 1 mm within 5 years follow-up. LIKO-M dental implant system thus proved to be efficient both esthetically and functionally and may be used for compete oral rehabilitation of edentulous patients.
Assuntos
Implantes Dentários/estatística & dados numéricos , Estética Dentária , Perda de Dente/cirurgia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Federação Russa , Resultado do Tratamento , Adulto JovemAssuntos
Biomarcadores Tumorais/metabolismo , Transformação Celular Neoplásica/metabolismo , Leucoplasia Oral/metabolismo , Leucoplasia Oral/patologia , Mucosa Bucal , Neoplasias Bucais/genética , Neoplasias Bucais/metabolismo , Biomarcadores Tumorais/genética , Transformação Celular Neoplásica/genética , Transformação Celular Neoplásica/patologia , Diagnóstico Diferencial , Humanos , Proteínas Inibidoras de Apoptose/metabolismo , Leucoplasia Oral/genética , Perda de Heterozigosidade , Metaloproteinase 1 da Matriz/metabolismo , Metaloproteinase 9 da Matriz/metabolismo , Glicoproteínas de Membrana/metabolismo , Mucosa Bucal/metabolismo , Mucosa Bucal/patologia , Neoplasias Bucais/diagnóstico , Neoplasias Bucais/patologia , Ploidias , Valor Preditivo dos Testes , Medição de Risco , Fatores de Risco , Survivina , Fatores de Transcrição/metabolismo , Proteínas Supressoras de Tumor/metabolismoRESUMO
Cancer-testis (CT) antigens are normally expressed mostly in human germ cells, there is also an aberrant expression in some tumor cells. This expression profile makes them potential tumor growth biomarkers and a promising target for tumor immunotherapy. Specificity of CT genes expression in oral malignant and potentially malignant diseases, e.g. oral leukoplakia, is not yet studied. Data on CT genes expression profile in leukoplakia would allow developing new diagnostic methods with potential value for immunotherapy and prophylaxis of leukoplakia malignization. In our study we compared CT genes expression in normal oral mucosa, oral leukoplakia and oral squamous cell carcinoma. We are the first to describe CT genes expression in oral leukoplakia without dysplasia. This findings make impossible differential diagnosis of oral leukoplakia and squamous cell carcinoma on the basis of CT genes expression. The prognostic value of CT genes expression is still unclear, therefore the longitudinal studies are necessary.
Assuntos
Antígenos de Neoplasias/metabolismo , Carcinoma de Células Escamosas/imunologia , Transformação Celular Neoplásica , Neoplasias Laríngeas/imunologia , Leucoplasia Oral/imunologia , Mucosa Bucal/imunologia , Neoplasias Bucais/imunologia , Lesões Pré-Cancerosas/imunologia , Neoplasias Testiculares/imunologia , Testículo/imunologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Regulação Neoplásica da Expressão Gênica , Glote , Humanos , Masculino , Pessoa de Meia-Idade , Mucosa Bucal/patologia , Valor Preditivo dos Testes , Prognóstico , Neoplasias da Língua/imunologiaRESUMO
For cases of considerable atrophy of alveolar bone updating method of vinir plastics with iliac crest transplant is offered. The technique of capital GHE, Cyrillic-shaped bone transplant formation is developed. Use of capital GHE, Cyrillic-shaped bone transplant from iliac crest allows increase volume of alveolar part of jaws by height and width. Resorption of bone transplant is reduced by additional use of biomaterials and collagen membrane. Authors received positive results of the delayed implantation after bone plastic.
Assuntos
Perda do Osso Alveolar/cirurgia , Aumento do Rebordo Alveolar/métodos , Transplante Ósseo , Implantação Dentária , Íleo/transplante , Adulto , Feminino , HumanosRESUMO
Topografical anatomical features of maxillary sinus structure create complexities for carrying out the sinus lifting operation. With Schneider's membrane defect from 3 to 6 mm the technique of its elimination with use of platelet poor plasma is offered. Defects in mucous membrane from 3 to 6 mm arise during operation in 7,9% of cases. In such cases bone window is expanding, mucous membrane is mobilizing and the defect is covered with platelet poor plasma received from patient's blood.
Assuntos
Implantação Dentária , Seio Maxilar/lesões , Seio Maxilar/cirurgia , Mucosa Nasal/lesões , Plasma , Adesivos Teciduais/administração & dosagem , Plaquetas , Feminino , Humanos , Pessoa de Meia-Idade , Procedimentos de Cirurgia Plástica/efeitos adversosRESUMO
As part of the plan to prepare mandible alveolar part to dental implantation in cases of considerable vertical atrophy several variants of osteoplastic operations allowing to increase the height of mandible alveolar part 2 methods of sandwich plastics were offered by us: sandwich plastics by bone flap elevation and sandwich plastics by bone flap rotation. The operation schemes and operation course description were presented; there were proved positive postoperative results of the vertical bone resorption elimination and results of dental implantation on received bone volume of the jaw.
Assuntos
Perda do Osso Alveolar/cirurgia , Aumento do Rebordo Alveolar/métodos , Implantação Dentária , Retalhos Cirúrgicos , Adulto , Idoso , Humanos , Pessoa de Meia-Idade , Procedimentos de Cirurgia PlásticaRESUMO
During the operation of sinus lifting and occurrence of Schneider's membrane defect in the size no more than 3 mm the technique of its elimination is offered. Anatomic features of structure of maxilla sinus and error of surgical technics can lead to intraoperative rupture of a Schneider's membrane. At the size of defect no more than 3 mm are recommended to separate a membrane on all perimeter of the bottom third of sinus and then to lift it up until edges of the damaged mucous membrane will block, <
Assuntos
Implantação Dentária/efeitos adversos , Seio Maxilar/cirurgia , Mucosa Nasal/lesões , Mucosa Nasal/cirurgia , Procedimentos de Cirurgia Plástica/efeitos adversos , Feminino , Humanos , Período Intraoperatório , MasculinoRESUMO
An examination was done in an attempt to reveal the connection between configuration of a nexus and the inner and outer-ortho (bone-constituted) parts (supra-structures) of the bi-leveled dental implants at a point of connectivity of the entire system. The ensuing recommendation (in accordance with the examination) focuses on the analysis of the strength of the fixation of the implants' screws with the aim of excluding a possibility of micro-mobility at the connection point of the entire system. The result of the examination yielded the principles of resistance against the lateral pressure, dependent upon the shape of the supra-structures.
Assuntos
Implantação Dentária Endóssea , Implante Dentário Subperiósteo , Implantes Dentários/normas , Parafusos Ósseos , Modelos Biológicos , Estresse MecânicoRESUMO
The objective drawbacks of most common methods of patient examination and treatment planning that determine certain percentage of unavoidable complications are outlined. In order to increase treatment efficacy with dental implants, updated examination methods and algorithm of their application were developed providing clear indications to bone-plastic operations and dental implantation, low number of complications and improved treatment results.
Assuntos
Implantação Dentária/métodos , Boca Edêntula , Radiografia Panorâmica , Tomografia Computadorizada por Raios X , Algoritmos , Processo Alveolar/diagnóstico por imagem , Processo Alveolar/cirurgia , Transplante Ósseo , Implantes Dentários/normas , Estética , Humanos , Maxila/diagnóstico por imagem , Boca Edêntula/diagnóstico por imagem , Boca Edêntula/reabilitação , Boca Edêntula/cirurgia , Seios Paranasais/diagnóstico por imagemRESUMO
The presence and concentration of the inducible form of heat shock proteins (Hsp70) were determined in blood serum of patients with hypertension (HT), stage II, including 28 males with stage II HT, who did not receive any antihypertensive therapy, and 10 healthy subjects. A higher Hsp70 content was found in blood serum of in patients with stage II HT. Such Hsp70 concentration was related with ECG signs of left ventricular hypertrophy and with the rennin content in blood. The findings of endothelium-dependent vasodilation (EDVD) of the radial artery did not differ within the examined groups. Still EDVD was reliable lower in patients with atherosclerotic plagues in the common carotid arteries. A reduced EDVD in the radial artery was attributed to a higher EDVD content in blood serum, which did not depend on a prescription or on an arterial hypertension severity. The results are indicative of that a higher inducible Hsp70 concentration in blood serum could potentially be a marker of lesions to target organs in HT; equally it could be of a certain significance in the atherosclerotic pathogenesis.
Assuntos
Proteínas de Choque Térmico HSP70/sangue , Hipertensão/sangue , Biomarcadores/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Especificidade de ÓrgãosRESUMO
Prevention of infectious inflammatory complications of intraosseous implantation is a pressing problem. Chlorohexidine dosage forms Corsodyl and Eludril were used for this purpose. In the control group, furacillin was used. Microbiological studies showed that instillations of Corsodyl and Eludril solutions during the postoperative period did not modify normal oral microflora and led to disappearance of the most aggressive anaerobic bacteria in 1-3 days. These drugs are more effective that Listerine, and they are recommended for prevention of infectious inflammatory complications after intraosseous implantation.