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1.
Stomatologiia (Mosk) ; 99(4): 76-80, 2020.
Artigo em Russo | MEDLINE | ID: mdl-32692525

RESUMO

INTRODUCTION: The lack of the available bone in the posterior maxilla is determined by the range of anatomical and topographical factors. Lateral sinus floor elevation is the procedure for vertical augmentation in this region. Several complications may occur while performing a lateral sinus lift and bleeding due to alveolar antral artery (AAA) damage is one of them.The aim of the study is to analysis the different literature on AAA topographical features on cadaver species and on radiographic methods. MATERIALS AND METHODS: A search of the English language literature was performed by three independent readers in the PubMed electronic database. Articles published between 2013 and 2018 on cadaver and radiographic studies were included. RESULTS: The analysis included 9 articles. AAA prevalence in cadavers was 100% but AAA bone signs in CBCT studies varied between 32% and 93%. The diameter varied from 0.91 mm to 3.6 mm, and the distances from AAA to the sinus floor and to the alveolar ridge crest were 7.38-9.97 and 14.6-18.66 mm respectively. CONCLUSION: Our literature analysis showed the difference between AAA prevalence in cadavers and in CBCT scans. The results show that even proper pre-operative planning of the lateral sinus lift with CBCT cannot guarantee avoiding AAA damage while performing the surgery.


Assuntos
Seio Maxilar , Levantamento do Assoalho do Seio Maxilar , Artérias , Tomografia Computadorizada de Feixe Cônico , Humanos , Prevalência
2.
Anticancer Res ; 40(7): 3793-3799, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32620618

RESUMO

BACKGROUND/AIM: Head and neck squamous cell carcinoma (HNSCC) is one of the most common types of cancer worldwide. Our study focused on the axon guidance receptor roundabout guidance receptor 1 (ROBO1) as a target for monoclonal antibody therapy of HNSCC. We previously showed that saporin-conjugated anti-ROBO1 (B5209B) immunotoxin (IT-ROBO1) enhanced cytotoxic effects on HNSCC cells in combination with the photosensitizer aluminum phthalocyanine disulphonate (AlPcS2a) and illumination. We examined the effects of this combination therapy in a mouse xenograft model. MATERIALS AND METHODS: IT-ROBO1 was intraperitoneally administered to HSQ-89 (derived from Japanese maxillary sinus squamous carcinoma, RCB0789; RIKEN, Tsukuba, Japan) xenografted mice. After 3 days, AlPcS2a was injected subcutaneously around the tumor and the area was illuminated at 650 nm for 30 min. The growth of the tumor was evaluated and the effects on the tumor were examined. RESULTS: Pronounced anti-tumor effects were elicited by the administration of IT-ROBO1 and AlPcS2a with light illumination on tumor size and pathological characteristics. CONCLUSION: The results showed that photosensitizer treatment with illumination robustly enhanced the antitumor effect of the IT-ROBO1 immunotoxin.


Assuntos
Neoplasias de Cabeça e Pescoço/tratamento farmacológico , Imunotoxinas/metabolismo , Seio Maxilar/efeitos dos fármacos , Proteínas do Tecido Nervoso/metabolismo , Fármacos Fotossensibilizantes/farmacologia , Receptores Imunológicos/metabolismo , Carcinoma de Células Escamosas de Cabeça e Pescoço/tratamento farmacológico , Animais , Anticorpos Monoclonais/farmacologia , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Humanos , Masculino , Seio Maxilar/metabolismo , Camundongos , Camundongos Endogâmicos BALB C , Carcinoma de Células Escamosas de Cabeça e Pescoço/metabolismo , Ensaios Antitumorais Modelo de Xenoenxerto
3.
Stomatologiia (Mosk) ; 99(3): 52-56, 2020.
Artigo em Russo | MEDLINE | ID: mdl-32608950

RESUMO

The aim of the study was to establish the location, orientation and height of the maxillary sinus primary septa. The data of 100 cone-beam computed tomography scans of patients with a mean age of 37.6±15.4 years from dental outpatient hospitals of Minsk, Belarus taken from 2012 to 2019 were analyzed. The prevalence of sinus septa was 45.6% for sinuses and 37.2% for patients. As a rule, septa were symmetric bilaterally. The heights of septa varied from 2-3 mm to 8-14 mm in the majority of cases. Orientation of septa was coronal in 94.7%, sagittal in 3.9%, and horizontal in 1.4% of cases. The location of the septa must be considered when planning for dental implants. In addition, septa in the upper and posterior regions of the maxillary sinus may interfere with mucociliary clearance.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Seio Maxilar , Adulto , Humanos , Pessoa de Meia-Idade , Prevalência , República de Belarus , Adulto Jovem
4.
Compend Contin Educ Dent ; 41(6): 331-335, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32551715

RESUMO

This case series demonstrates internal maxillary sinus elevation and placement of 37 posterior implants in 34 private practice patients using sequential motorized expander burs exclusively to infracture the sinus border and embed bone graft material (allograft or xenograft) for vertical augmentation. With this technique, manual osteotome/malleting was completely avoided, improving surgical control and the patient experience. Sinus borders were lifted by a mean of 3.92 mm in ridges that had an average residual height of 7.52 mm. All implants achieved high insertion torque values (≥90 Ncm), obtained primary stability, and were successfully restored without complications. Anecdotally, the type of bone graft used did not appear to influence the outcome.


Assuntos
Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Transplante Ósseo , Implantação Dentária Endo-Óssea , Humanos , Maxila/cirurgia , Seio Maxilar/cirurgia , Osteotomia , Torque
5.
J Laryngol Otol ; 134(6): 473-480, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32508301

RESUMO

OBJECTIVES: Treatment of inflammatory and neoplastic disease in the maxillary sinus, pterygopalatine and infratemporal fossae requires appropriate surgical exposure. As modern rhinology evolves, so do the techniques available. This paper reviews extended endoscopic approaches to the maxillary sinus and the evidence supporting each technique. METHODS: A literature search of the Ovid Medline and PubMed databases was performed using appropriate key words relating to endoscopic approaches to the maxillary sinus. RESULTS: Mega-antrostomy and medial maxillectomy have a role in the surgical treatment of refractory inflammatory disease and sinonasal neoplasms. The pre-lacrimal fossa approach provides excellent access but can be limited because of anatomical variations. Both the transseptal and endoscopic Denker's approaches were reviewed; these appear to be associated with morbidity, without any significant increase in exposure over the afore-described approaches. CONCLUSION: A range of extended endoscopic approaches to the maxillary sinus exist, each with its own anatomical limitations and potential complications.


Assuntos
Endoscopia/efeitos adversos , Seio Maxilar/cirurgia , Doenças dos Seios Paranasais/cirurgia , Base do Crânio/anatomia & histologia , Endoscopia/métodos , Endoscopia/tendências , Humanos , Doenças dos Seios Paranasais/patologia , Base do Crânio/cirurgia
6.
Quintessence Int ; 51(7): 578-584, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32500865

RESUMO

An edentulous posterior maxilla can present a challenge for placement of dental implants due to the proximity of the maxillary sinus. Sinus augmentation is a surgical bone grafting procedure aimed to increase the bone height for implant support. A number of sinus augmentation techniques have been presented and the outcomes show good implant success rates. In order to achieve the desirable outcomes, it is important to gain knowledge of the maxillary sinus anatomy and complete a thorough preoperative evaluation. Being aware of the location of vasculature, nerves, and the presence of septa will help reduce the risk of intraoperative and postoperative complications. This review provides a narrative clinical overview related to the anatomy, preoperative evaluation, contraindications, techniques, postoperative care, outcome measures, and complications of sinus augmentation procedures.


Assuntos
Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Implantação Dentária Endo-Óssea , Falha de Restauração Dentária , Maxila , Seio Maxilar , Resultado do Tratamento
7.
Indian J Dent Res ; 31(2): 312-314, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32436914

RESUMO

Identification and management of ectopic supplemental tooth in anatomically complex areas such as the floor of orbit are challenging. This arises from the rarity and lack of consensus over management. The situation gets complex when there is an evidence of follicular pathology such as dentigerous cyst. In this report, a case of maxillary third molar associated with maxillary sinus and a distomolar in association with the floor of orbit medially to the inferior-orbital canal is presented. The surgical management of the condition is presented.


Assuntos
Cisto Dentígero , Dente Impactado , Humanos , Seio Maxilar , Dente Serotino , Órbita
8.
J Contemp Dent Pract ; 21(3): 317-321, 2020 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-32434981

RESUMO

AIM: Evaluating the association of maxillary sinus dimensions and the maxillary arch dimensions may help to understand the interrelationship between the maxillary sinus and the anatomical facial features. The study aimed to investigate the correlation of the 2-D and 3-D maxillary sinus dimensions with the linear measurement of the maxillary arch width (MAW) in adult individuals. MATERIALS AND METHODS: A cross-sectional observational study was conducted using 54 cone-beam computed tomography scans obtained from patients starting their treatment in dental clinics of dental college, Jazan University. Maximal vertical diameter (maximal height) of the maxillary sinus (MSH), maximal horizontal diameter (maximal width) of the maxillary sinus (MSW), maximal anteroposterior diameter (maximal length) of the maxillary sinus (MSL), MAW, and maxillary sinus volume (MSV) were measured and recorded using 3-D Slicer software. The Spearman's rank correlation coefficient (rho-ρ) was used to analyze the strength and type of the relationship between variables. RESULTS: In both males and females, moderate to strong correlation (ρ range between 0.65 and 0.80) was observed between MSV for all linear measurements of the maxillary sinuses on both sides. The maxillary sinus length showed the weakest correlation with MAW in both genders Conclusion: The relationship of MAW with MSV on both sides shows a stronger correlation than its relationship with all 2-D linear measurements of maxillary sinuses. CLINICAL SIGNIFICANCE: The clinician should take into consideration the structure and function of the maxillary sinus when treating the midfacial structures for trauma or congenital malformations.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Seio Maxilar , Adulto , Estudos Transversais , Face , Feminino , Humanos , Masculino , Maxila
9.
Compend Contin Educ Dent ; 41(5): 278-283, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32369385

RESUMO

Inadequate alveolar bone height/volume and sinus anatomy can complicate the predictable placement of conventional implants and subsequent restoration in posterior maxillary sites. A variety of sinus lift and vertical bone height augmentation materials and techniques have been utilized for this purpose; however, generally they are clinically challenging, demand well-trained surgical proficiency, and require the use of multiple armamentaria. Simultaneously, clinicians must meticulously handle the sinus membrane to achieve elevation without perforation, attain successful bone grafting, and ensure predictable implant osseointegration. The hydraulic sinus condensing (HSC) technique via the osteotomy site is designed to be less invasive than conventional sinus lift techniques, reduce trauma to patients, improve implant osseointegration into grafted alveolar bone, prevent sinus membrane perforation, and enhance the overall efficiency of the associated surgical process. This article briefly reviews the evolution of sinus lift and posterior maxillary implant insertion procedures and presents a case in which the HSC technique and a uniquely designed sinus implant were used.


Assuntos
Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Implantação Dentária Endo-Óssea , Humanos , Maxila , Seio Maxilar , Osseointegração
10.
Int J Oral Implantol (Berl) ; 13(2): 109-121, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32424379

RESUMO

AIMS: To evaluate whether piezoelectric bone surgery (PBS) for lateral maxillary sinus floor elevation reduces risk of intraoperative complications, requires prolonged surgical time and improves the survival rate of dental implants in comparison with conventional rotary instruments. MATERIALS AND METHODS: This meta-analysis followed PRISMA guidelines and was registered in the PROSPERO database (CRD42019122972). The PubMed, Embase, Scopus and Open Grey databases were screened for articles published from 1 January 1990 to 31 December 2018. The selection criteria included randomised controlled trials (RCTs) and case-control studies (CCTs) comparing PBS with rotary instruments in lateral sinus augmentation and reporting intraoperative and postoperative outcomes (e.g. sinus membrane perforations, surgical time and implant failure rate). The risk of bias assessment was performed using the Cochrane Collaboration's tool for RCTs. A meta-analysis was performed, and the power of the meta-analytic findings was assessed via trial sequential analysis (TSA). RESULTS: Four RCTs met the inclusion criteria and were included in the review. The meta-analysis showed that, although a lower incidence of membrane tearing occurred when using PBS, the difference between the two groups was not significant. However, the power of evidence for this outcome, as determined by the TSA, was weak. Moreover, there was moderate evidence suggesting that PBS prolongs the surgery duration (mean difference of 3.43 minutes), whilst insufficient data was present to assess if PBS improves the survival rate of implants inserted in augmented sinuses. CONCLUSIONS: The power of the evidence was too weak to confirm the above-mentioned findings and further well-designed randomised clinical trials are needed to draw definitive conclusions.


Assuntos
Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Seios Transversos , Humanos , Maxila , Seio Maxilar
11.
J Contemp Dent Pract ; 21(2): 211-214, 2020 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-32381830

RESUMO

AIM: The aim of the present study was to present a case of maxillary aspergillosis with unusual clinical presentation and imaging findings. BACKGROUND: The range of lesions and conditions that affect the maxillary sinus is wide and vast. This necessitates a dynamic multidisciplinary approach for proper diagnosis and effective management. CASE DESCRIPTION: We present an unusual case of maxillary aspergillosis that mimicked apical periodontitis and was most consistent with lymphoma from the diagnostic imaging perspective. Histopathology, however, established the correct diagnosis; appropriate management commenced promptly. CONCLUSION: It is imperative that maxillary aspergillosis be diagnosed and managed properly and promptly to improve prognosis. Advanced imaging is required, but it plays an adjunct role to histopathology. Long-term follow-up is also necessary to ensure complete resolution of the infection. CLINICAL SIGNIFICANCE: Correlating clinical and imaging findings is a crucial step and any inconsistencies should be resolved promptly so as not to delay adequate management. Histopathology often serves to dispute any inconsistencies and allows the establishment of a proper diagnosis.


Assuntos
Aspergilose , Sinusite Maxilar , Periodontite Periapical , Humanos , Maxila , Seio Maxilar
12.
Chin J Dent Res ; 23(1): 71-76, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32232232

RESUMO

Endoscopic techniques have been applied to oral and maxillofacial surgeries. Previous studies have proved their practicability in the treatment of osteomyelitis of the mandible and displaced residual roots in the maxillary sinus. In this report, two patients with dentigerous cysts in the maxillary sinus underwent endoscope-assisted curettage. Both patients were successfully cured without recurrent lesions or any complications. The follow-up found that the bone cavities had shrunk. An endoscope-assisted Caldwell-Luc operation provided clear visibility of the surgical field and preserved the mucosa of the maxillary sinus.


Assuntos
Cisto Dentígero , Seio Maxilar , Endoscopia , Humanos
13.
Artigo em Inglês | MEDLINE | ID: mdl-32233183

RESUMO

Alveolar bone resorption and maxillary sinus pneumatization occurring after dental extraction in the posterior region of the maxilla may be problematic when planning implant-supported rehabilitation. Various regenerative options are available, including guided bone regeneration, bone block grafts, and lateral sinus augmentation. These procedures are associated with significant complication rates, high morbidity, increased therapy duration, and high cost. Less invasive approaches, such as transcrestal sinus floor elevation, and using short implants have been proposed in an attempt to reduce these drawbacks. The aim of this study is to analyze available evidence to suggest predictable options and identify minimally invasive management of implant-supported rehabilitation in the posterior maxilla. This article concerns biologic mechanisms regulating new bone formation after maxillary sinus augmentation and examines characteristics of available implants and grafting materials to help the clinician select the most rational and convenient surgical approach according to specific situations.


Assuntos
Produtos Biológicos , Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Implantação Dentária Endo-Óssea , Maxila , Seio Maxilar
14.
Int J Periodontics Restorative Dent ; 40(3): e95-e102, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32233185

RESUMO

Insufficient crestal bone is a common feature encountered in the edentulous posterior maxilla due to atrophy of the alveolar ridge and maxillary sinus pneumatization. Numerous surgical techniques, grafting materials, and timing protocols have been proposed for implant-supported rehabilitation of posterior maxillae with limited bone height. In the majority of potential implant sites, residual bone height is less than 8 mm and the clinician has to select either a lateral or transcrestal sinus-elevation technique or placing short implants as the correct surgical option. Nevertheless, guidelines for selecting the best option remains mostly based on the personal experience and skills of the surgeon. The role of sinus anatomy in healing and graft remodeling after sinus floor augmentation is crucial. In addition to the evaluation of residual bone height, the clinician should consider that histologic and clinical outcomes are also influenced by the buccal-palatal bone wall distance. Therefore, three main clinical scenarios may be identified and treated with either a lateral or transcrestal sinus-elevation technique or short implants. This article introduces a new decision tree for a minimally invasive approach based on current evidence to help the clinician safely and predictably manage implant-supported treatment of the atrophic posterior maxilla.


Assuntos
Aumento do Rebordo Alveolar , Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Árvores de Decisões , Implantação Dentária Endo-Óssea , Maxila , Seio Maxilar
15.
Artigo em Inglês | MEDLINE | ID: mdl-32233190

RESUMO

Maxillary sinus augmentation is a procedure commonly performed in patients in need of maxillary posterior implants with loss of vertical ridge height and sinus pneumatization. Previous studies have identified some factors associated with sinus membrane perforation during lateral-wall sinus elevation procedures. Although membrane perforation does not directly link to future implant failure, it has been shown to have an association with postoperative complications. In order to promote more predictable results and reduce complications during the sinus elevation procedure, especially for the lateral window approach, articles published in peer-reviewed journals were reviewed to support the proposal of a new risk-evaluation system prior to the sinus surgery. This article reviews anatomical and patient-related factors that might affect the risk of perforation during the surgery and also aims to provide a risk assessment table to enable clinicians to analyze these factors prior to the lateral sinus augmentation surgery.


Assuntos
Seio Maxilar , Levantamento do Assoalho do Seio Maxilar , Implantação Dentária Endo-Óssea , Humanos , Maxila , Medição de Risco
16.
J Oral Sci ; 62(2): 242-244, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32224576

RESUMO

When the sinus is enlarged, it may be necessary to elevate the floor of the maxillary sinus using the crestal or lateral approach. This report presents a case where sinus floor elevation was performed using tricalcium phosphate (TCP) plates supported by implant bodies, and only the blood clot was present around the implant bodies. Cone-beam computed tomography images, taken one year after the lateral approach, revealed the presence of a TCP-like radio-opacity, which almost disappeared after two years. About seven years after the surgery, the patient's superstructure and occlusion were stable. Furthermore, the grafted TCP was completely absorbed, and the implant body appeared to be in good condition, with no signs of bone resorption around the implant.


Assuntos
Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Fosfatos de Cálcio , Tomografia Computadorizada de Feixe Cônico , Humanos , Seio Maxilar
17.
Rev. ADM ; 77(2): 108-116, mar.-abr. 2020. ilus
Artigo em Espanhol | LILACS | ID: biblio-1102217

RESUMO

La frecuencia de las cirugías relacionadas con implantes dentales que involucran procedimientos de aumento de tejido blando y hueso han aumentado significativamente. Los sustitutos óseos derivados de bovinos han sido, por mucho, los xenoinjertos más utilizados en odontología. Aunque la literatura está repleta de estudios clínicos a favor de los materiales de injerto derivados de bovinos, los estudios que reportan los riesgos y las complicaciones clínicas son escasos. La impresión clínica y la preocupación por la seguridad del paciente llevaron al informe que hemos proporcionado. El objetivo de esta presentación de una serie de casos es crear conciencia sobre los riesgos a largo plazo y las complicaciones clínicas tardías de los materiales de injerto derivados de bovinos. Los pacientes fueron referidos a un consultorio privado debido a complicaciones asociadas con los procedimientos de injerto óseo. Reportamos los datos demográficos, hallazgos médicos y dentales significativos. Las complicaciones incluyeron: sinusitis y patologías del hueso maxilar, desplazamiento de los materiales del injerto, falla del implante, reacción de cuerpo extraño, encapsulación del material, inflamación crónica, fenestraciones de tejidos blandos y quistes asociados. Los materiales de injerto derivados de bovino no fueron biodegradables. La preocupación de los autores es que la morbilidad del paciente puede no reducirse con los xenoinjertos, debido a los riesgos inherentes y a las complicaciones asociadas. La resolución de las lesiones y los síntomas asociados se logró después de la eliminación/ remoción de los materiales del injerto óseo. La extracción quirúrgica de los materiales de xenoinjerto puede requerir habilidades clínicas avanzadas, debido a las diferentes configuraciones que los cirujanos pueden encontrar en las partículas no resorbidas y migradas. Los médicos que buscan proporcionar resultados funcionales y estéticos deben ser conscientes de las complicaciones de los materiales de injerto derivados de bovinos. La seguridad a largo plazo de los xenoinjertos y su posible asociación con la transmisión de enfermedades son preocupaciones válidas (AU)


The frequency of dental implant related surgeries that involve soft and bone augmentation procedures has increased significantly. Bovinederived substitutes have been by far the most commonly used xenografts in dentistry. Albeit literature is replete with clinical studies in favor of bovine-derived graft materials, bibliographical data reporting on risks and clinical complications is scarce. Clinical impression and concern for patients' safety led to the report we have provided. The aim of the present case series was to raise awareness on the long-term risks and late clinical complications of bovine-derived graft materials. Patients were referred to a private practice due to bone augmentation complications. Demographics, significant medical and dental findings are reported. The present report was conceived with the safety of patients in mind. Complications included sinus and maxillary bone pathoses, displacement of the graft materials, oro-antral and oro-nasal communications, paresthesia, implant failure, foreign body reactions, encapsulation, chronic inflammation, soft tissue fenestrations and associated cyst. Bovine-derived graft materials were not biodegradable. Resolution of the associated lesions and symptoms was achieved after the removal of the bone graft materials. Clinicians seeking to provide functional and esthetic outcomes should be aware of the complications of the bovine-derived graft materials. The long-term safety of xenografts and their potential association with disease are valid concerns (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Complicações Pós-Operatórias , Bovinos , Fatores de Risco , Transplante Ósseo , Substitutos Ósseos , Implantação Dentária Endo-Óssea , Falha de Restauração Dentária , Procedimentos Cirúrgicos Bucais , Seio Maxilar/patologia
18.
Rev. Odontol. Araçatuba (Impr.) ; 41(1): 24-29, jan.-abr. 2020. ilus
Artigo em Português | LILACS, BBO - Odontologia | ID: biblio-1102366

RESUMO

O levantamento de seio maxilar é realizado como forma de obtenção de volume ósseo adequado para a instalação de implantes dentários, por vezes imediatos, em região posterior de maxila. A perfuração da membrana sinusal é um dos acidentes mais comuns associados a este procedimento. Objetivo: Relatar o uso da Fibrina Rica em Plaquetas ­ PRF como uma técnica simples e de baixo custo, que permite a obtenção de coágulos de fibrina e membranas enriquecidas com plaquetas, simulando o processo fisiológico de reparo tecidual, podendo servir como único material de enxertia na elevação sinusal, além de proporcionar o reparo de uma membrana eventualmente perfurada durante o ato cirúrgico. Relato de Caso: Paciente do gênero feminino, faioderma, 57 anos de idade, que por meio de tomografia computadorizada apresentava áreas de pneumatização em região 14 e região 15, exigindo elevação sinusal previamente à instalação de implantes. A perfuração da membrana foi observada durante o descolamento da mesma. O pós-operatório sob exame clínico regular ocorreu sem complicações. Após um período de cicatrização de quatro meses, os implantes foram reabertos para a confecção das coroas. A avaliação da tomografia cone beam pós-cirúrgica comparada à inicial demonstrou que o osso peri-implantar era estável e compacto ao redor dos implantes. Conclusão: Os achados deste relato de caso sugerem que a membrana PRF pode ser uma consideração viável para o reparo da membrana do seio perfurada(AU)


The maxillary sinus lift is performed as a way to obtain adequate bone volume for the installation of dental implants, sometimes immediate, in posterior maxilla. Sinus membrane perforation is one of the most common accidents associated with this procedure. Objective: To report the use of Plateletrich Fibrin ­ PRF as a simple and low cost technique, which allows the allows to obtain fibrin clots and membranes enriched with platelets, simulating the physiological process of tissue repair and can serve as the only grafting material for sinus elevation, besides providing repair of a membrane that may have been perforated during the surgical procedure. Case Report: Female patient, faioderm, 57 years old who, through imaging examinations, had areas of pneumatization in region 14 and region 15, requiring sinusal elevation prior to implant installation. The perforation of the membrane was observed during its detachment. The postoperative period under regular clinical examination occurred without complications. After a healing period of four months, the implants were reopened to make the crowns. The evaluation of the postoperative cone beam tomography compared to the initial one demonstrated that the periimplant bone was stable and compact around the implants. Conclusion: The findings of this case report suggest that the PRF membrane may be a viable consideration for the repair of perforated sinus membrane(AU)


Assuntos
Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Fibrina Rica em Plaquetas , Seio Maxilar
19.
Wiad Lek ; 73(2): 254-258, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32248155

RESUMO

OBJECTIVE: The aim: To study the peculiarities of the structure and to see the development of maxillary sinuses in infants, during the early and first childhood periods of human ontogenesis. PATIENTS AND METHODS: Materials and methods: The study of the peculiarities of the development and formation of the maxillary sinuses' wall was carried out on 50 species of the upper jaws, turtles and sections of the head of the human corpses during different periods of ontogenesis (in infants, during early and first childhood) with the help of histological examination, preparation, CT scan, radiography and morphometry. RESULTS: Results and conclussions: In infants and during the early and first childhood periods of human ontogenesis in the MS there are changes in both quantitative and qualitative nature. In infants (10 days - 1 year), maxillary sinuse is located more lateral to the basis of the lower nasal concha. In this period, it begins to form its lower wall, which in the form of a narrow strip invaginates into the alveolar process. The growth of the sinus is due to the protrusion of the external wall in the direction of the zygomatic bone. The wall of the maxillary sinuse is covered with mucosa (respiratory mucous membrane), which is lined by pseudostratified columnar ciliated epithelium, which is located on the basement membrane. X-ray examination of maxillary sinuse in infants shows that it is a pear-shaped in the anterior projection. Clearly the following walls of the sinuses are visible: the upper, the lower, one, which is arched-shaped, the front and the median, which in lower part are crossed as arch to each other. Investigation of biological specimens of the maxillofacial area of the early childhood period (1-3 years) showed that maxillary sinuses in all specimens are determined more laterally to the basis of the lower nasal concha. Its vertical dimension is 7.5-8.0 mm, transverse - 5.7-6.0 mm, anterior-posterior - 13.9-14.5 mm. X-ray examination of maxillary sinuse in early childhood in the front projection shows that it has an oval shape. There are the following walls of the sinus: upper, lower, front and middle. The study of biological specimens of the facial area in the period of the first childhood (4-7 years) has been established that the configuration of maxillary sinuse is changing. All walls are determined, but the upper wall is rather short, and the front wall is narrow. The median wall has the most prominent development. On X-rays in the anterior projection, a slight extension of the maxillary sinuse is noted laterally. Therefore, one should thoroughly study the peculiarities of the development and structure of the walls of the maxillary sinuses in order to prevent the development of complications and to achieve the treatment of inflammatory diseases of the MS in an optimal term.


Assuntos
Maxila , Seio Maxilar , Processo Alveolar , Humanos , Lactente , Morfogênese , Conchas Nasais
20.
Indian J Dent Res ; 31(1): 157-159, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32246701

RESUMO

Cysts of the oral cavity are among the most commonly encountered biopsy specimen in histopathology. Shear categorized the cysts associated with maxillary antrum under four subheadings - mucocoele, retention cyst, pseudocyst, and postoperative maxillary cyst (PMC). PMC is also known as surgical ciliated cyst, postoperative paranasal cyst, or respiratory implantation cyst. Although it constitutes 20% of oral cysts in Japan, it is quite rare in the other parts of the world. Herewith, we report a case of a 65-year-old female who presented with the complaint of palatal swelling and having a history of maxillary sinus surgery 30 years ago.


Assuntos
Mucocele , Doenças dos Seios Paranasais , Idoso , Feminino , Humanos , Maxila , Seio Maxilar , Complicações Pós-Operatórias
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