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1.
BMC Ophthalmol ; 24(1): 146, 2024 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-38566099

RESUMO

BACKGROUND: Trauma-induced orbital blowout fracture (OBF) with eyeball displacement into the maxillary sinus is rare. CASE PRESENTATION: We present the case of a 14-year-old with a closed head injury, OBF, and displacement of the eyeball into the maxillary sinus following a car accident. A prompt transconjunctival access surgery was performed for eyeball repositioning and orbital reconstruction in a single session, mitigating anaesthesia-related risks associated with multiple surgeries. At the 12-month follow-up, his visual acuity was 20/200. Despite limited eye movement and optic nerve atrophy, overall satisfaction with the ocular appearance was achieved. CONCLUSIONS: This report offers novel insights into the mechanisms of OBF occurrence and the development of postoperative complications.


Assuntos
Traumatismos Cranianos Fechados , Transtornos da Motilidade Ocular , Fraturas Orbitárias , Masculino , Humanos , Adolescente , Seio Maxilar , Olho , Fraturas Orbitárias/complicações , Fraturas Orbitárias/diagnóstico , Fraturas Orbitárias/cirurgia , Traumatismos Cranianos Fechados/complicações
2.
Shanghai Kou Qiang Yi Xue ; 33(1): 64-70, 2024 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-38583027

RESUMO

PURPOSE: To analyze the bone remodeling around the implant 10 years after disk-up sinus reamer(DSR)-based internal sinus floor elevation with implantation and to investigate the influence of different factors on implant retention. METHODS: The clinical and imaging data of patients undergoing DSR-based sinus floor elevation with simultaneous implantation were collected from the Department of Dental Implantology, Affiliated Hospital of Qingdao University from January 2008 to December 2011. Panoramic film and CBCT were used to measure the changes of bone mass around implant in different periods. Kaplan-Meier and Log-rank tests were used to analyze the effects of different factors on implant retention with SPSS 26.0 software package. RESULTS: The study included 98 patients with a total of 128 implants. During the follow-up of 0-168 months, 7 implants failed, and the remaining formed good osseointegration and functioned, with a 10-year cumulative retention rate of 94.53%. The height of bone formation was (0.29±0.15) mm at the top and (2.74±0.66) mm in the sinus of 75 implant sites with complete imaging data obtained ten years after surgery. Kaplan-Meier and Log-rank tests showed that 8 factors including initial bone height, elevated bone height, mucosal perforation, implant length, implant torsion, diabetes, smoking and periodontitis had significant effects on implant retention. CONCLUSIONS: The DSR-based internal sinus floor elevation with implantation is a reliable and stable bone augmentation operation for vertical bone defect in maxillary posterior region, with a 10-year cumulative retention rate of no less than 94%. Initial bone height, elevated bone height, mucosal perforation, implant length, implant torsion, diabetes, smoking and periodontitis are the important factors affecting the long-term retention rate of implants.


Assuntos
Implantes Dentários , Diabetes Mellitus , Periodontite , Levantamento do Assoalho do Seio Maxilar , Humanos , Implantação Dentária Endóssea/efeitos adversos , Implantação Dentária Endóssea/métodos , Implantes Dentários/efeitos adversos , Levantamento do Assoalho do Seio Maxilar/efeitos adversos , Seio Maxilar/diagnóstico por imagem , Seio Maxilar/cirurgia , Maxila/diagnóstico por imagem , Maxila/cirurgia , Diabetes Mellitus/cirurgia , Resultado do Tratamento
3.
Int J Implant Dent ; 10(1): 11, 2024 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-38472687

RESUMO

OBJECTIVE: This study analyzed and compared the biomechanical properties of maxillary sinus floor mucosa with implants at three different maxillary sinus angles during a modified internal sinus floor elevation procedure. METHODS: 3D reconstruction of the implant, maxillary sinus bone, and membrane were performed. The maxillary sinus model was set at three different angles. Two internal maxillary sinus elevation models were established, and finite element analysis was used to simulate the modified maxillary sinus elevation process. The implant was elevated to 10 mm at three maxillary sinus angles when the maxillary sinus floor membrane was separated by 0 and 4 mm. The stress of the maxillary sinus floor membrane was analyzed and compared. RESULTS: When the maxillary sinus floor membrane was separated by 0 mm and elevated to 10 mm, the peak stress values of the implant on the maxillary sinus floor membrane at three different angles were as follows: maxillary sinus I: 5.14-78.32 MPa; maxillary sinus II: 2.81-73.89 MPa; and maxillary sinus III: 2.82-51.87 MPa. When the maxillary sinus floor membrane was separated by 4 mm and elevated to 10 mm, the corresponding values were as follows: maxillary sinus I: 0.50-7.25 MPa; maxillary sinus II: 0.81-16.55 MPa; and maxillary sinus III: 0.49-22.74 MPa. CONCLUSION: The risk of sinus floor membrane rupture is greatly reduced after adequate dissection of the maxillary sinus floor membrane when performing modified internal sinus elevation in a narrow maxillary sinus. In a wide maxillary sinus, the risk of rupture or perforation of the wider maxillary sinus floor is reduced, regardless of whether traditional or modified internal sinus elevation is performed at the same height.


Assuntos
Implantes Dentários , Levantamento do Assoalho do Seio Maxilar , Implantação Dentária Endóssea/métodos , Levantamento do Assoalho do Seio Maxilar/métodos , Seio Maxilar/cirurgia , Membranas/cirurgia
4.
PeerJ ; 12: e16991, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38525283

RESUMO

Background: Sex estimation is crucial to forensic examinations. In order to estimate sex, intact bones are used if the majority of bones are severely deformed and recovered in fragments. This study aims to analyze sexual dimorphism in intact maxillary sinuses using CBCT scanning to evaluate morphometric properties for sex identification. Methods: A total of 318 subjects, consisting of 159 males and 159 females, aged between 20 and 60 years without sinus pathology were included in this diagnostic, retrospective cross-sectional study. Bilateral measurements of the volume, height, width, and length of the maxillary sinuses were obtained and compared to evaluate the differences between sexes. Subsequently, a descriptive analysis using mean and standard deviation was performed, followed by a comparison between sexes with a p-value being less than 0.05 and Student's t-test. Finally, a discriminant analysis was performed separately for the right and left maxillary sinuses. Results: Males and females showed statistically significant variations in the length, width, and volume of the maxillary sinuses. Specifically, on the right side, males had longer maxillary sinuses than females (t = 5.6203, p < 0.0001). Meanwhile, on the left side, females had wider maxillary sinuses than males (t = 8.621, plt0.0001). In addition, males had greater volumes of maxillary sinuses on the right (t = 6.373, p < 0.0001) and left (t = 3.091, p < 0.0001) sides than females. The results of the discriminant analysis showed that the left width parameter had the highest accuracy of sex estimation (74.21%), followed by the Right Length (70.07%) and left volume (66.66%) parameters. The left height parameter had the lowest accuracy of sex estimation (49.37%). Conclusion: In forensic odontology, the volume of maxillary sinus can serve as a valid radiographic indicator of sex estimation.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Seio Maxilar , Masculino , Feminino , Humanos , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Seio Maxilar/diagnóstico por imagem , Estudos Retrospectivos , Estudos Transversais , Caracteres Sexuais
5.
Vestn Otorinolaringol ; 89(1): 42-44, 2024.
Artigo em Russo | MEDLINE | ID: mdl-38506025

RESUMO

The article presents a case of chronic odontogenic maxillary sinusitis and the results of its surgical treatment. The cause of the sinusitis, confirmed by the results of X-ray and pathohistological studies, was an inflammatory process affecting the bone tissue around the implant, installed in the place of the upper first molar which was accompanied by the development of an oroantral fistula. During the surgical intervention, the communication between the oral cavity and the maxillary sinus was eliminated, and the implant with the abutment, which was entirely in its cavity, was also removed.


Assuntos
Implantes Dentários , Sinusite Maxilar , Humanos , Sinusite Maxilar/diagnóstico , Sinusite Maxilar/etiologia , Sinusite Maxilar/cirurgia , Implantes Dentários/efeitos adversos , Seio Maxilar/diagnóstico por imagem , Seio Maxilar/cirurgia , Fístula Bucoantral/diagnóstico , Fístula Bucoantral/etiologia , Fístula Bucoantral/cirurgia , Doença Crônica
6.
PLoS One ; 19(3): e0298403, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38527039

RESUMO

The anatomy of the edentulous posterior maxilla and maxillary sinus possess unique challenges in implant dentistry. The purpose of this study was to assess maxillary sinus membrane thickness (MT) and lateral wall thickness (LWT) in different facial index profiles and to describe the clinical implications. A retrospective image analysis of 75 CBCT scans was done, which yielded a total of 150 sinus images. The facial index was calculated as per the formula given in the text and grouped as euryprosopic, mesoprosopic and leptoprosopic. The images obtained were of 36 women (48%) and 39 men (52%), with maximum subjects in 30-39 years age group. MT and LWT were measured at three different points on the radiograph at every 3mm from the base of the sinus floor in premolar and molar regions of each image. Results showed females had significant differences from males in LWT in both premolar and molar regions (p = 0.018 and 0.032 respectively). Subjects in 40-49 years of age had significant differences (p = 0.021) in MT in premolar region only. Also, difference in MT in premolar and molar regions were also statistically significant. Lastly, the present study did not find any statistically significant difference in MT and LWT in all three facial indices groups. It can be concluded that different facial indices have no positive correlation with maxillary sinus membrane thickness and lateral wall thickness. Hence, surgical complications are avoidable with proper detailed knowledge and appropriate identification of the anatomic structures characteristic to the maxillary sinus.


Assuntos
Seio Maxilar , Levantamento do Assoalho do Seio Maxilar , Masculino , Humanos , Feminino , Seio Maxilar/diagnóstico por imagem , Estudos Retrospectivos , Arábia Saudita , Tomografia Computadorizada de Feixe Cônico/métodos , Maxila
7.
J Clin Pediatr Dent ; 48(2): 173-180, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38548647

RESUMO

One of the most common congenital anomalies of the head and neck region is a cleft lip and palate. This retrospective case-control research aimed to compare the maxillary sinus volumes in individuals with bilateral cleft lip and palate (BCLP) to a non-cleft control group. The study comprised 72 participants, including 36 patients with BCLP and 36 gender and age-matched control subjects. All topographies were obtained utilizing Cone Beam Computed Tomography (CBCT) for diagnostic purposes, and 3D Dolphin software was utilized for sinus segmentation. Volumetric measurements were taken in cubic millimeters. No significant differences were found between the sex and age distributions of both groups. Additionally, there was no statistically significant difference observed between the BCLP group and the control group on the right and left sides (p > 0.05). However, the mean maxillary sinus volumes of BCLP patients (8014.26 ± 2841.03 mm3) were significantly lower than those of the healthy control group (11,085.21 ± 3146.12 mm3) (p < 0.05). The findings of this study suggest that clinicians should be aware of the lower maxillary sinus volumes in BCLP patients when planning surgical interventions. The utilization of CBCT and sinus segmentation allowed for precise measurement of maxillary sinus volumes, contributing to the existing literature on anatomical variations in BCLP patients.


Assuntos
Fenda Labial , Fissura Palatina , Humanos , Fenda Labial/diagnóstico por imagem , Fissura Palatina/diagnóstico por imagem , Fissura Palatina/cirurgia , Seio Maxilar/diagnóstico por imagem , Estudos Retrospectivos , Tomografia Computadorizada de Feixe Cônico/métodos
8.
Artigo em Inglês | MEDLINE | ID: mdl-38443234

RESUMO

OBJECTIVE: Maxillary sinusitis can be a sequela of medication-related osteonecrosis of the jaw (MRONJ). This study aims to characterize the microbiome of maxillary MRONJ with concurrent maxillary sinusitis and radiographic maxillary sinus opacification to determine if there is a relationship between the microbiome of MRONJ and sinus disease. STUDY DESIGN: This retrospective case series was conducted using electronic health records from the University of Pennsylvania and affiliated hospitals. The target population was surgically managed maxillary MRONJ patients. The primary predictor variables were tissue culture results. The primary outcomes were maxillary sinusitis or maxillary sinus opacification. Statistical analysis was performed using chi-squared tests at the 95% confidence interval. RESULTS: Thirty-nine subjects were selected: 25 had sinus opacification and 11 had sinusitis. Resident bacteria were present in 90% of subjects, nonresident bacteria in 74%, and opportunistic organisms in 15%. There were significantly more subjects with chronic sinusitis microbes (79%) than without. There were significantly more gram-positive anaerobes, specifically Propionibacterium, as well as the gram-negative facultative anaerobe, Capnocytophaga, in subjects with concurrent sinusitis. CONCLUSIONS: Maxillary MRONJ with concurrent maxillary sinusitis may be associated with gram-positive anaerobic species, Propionibacterium, and Capnocytophaga colonization. Maxillary MRONJ patients may benefit from sinus evaluation and concurrent surgical intervention.


Assuntos
Sinusite Maxilar , Doenças dos Seios Paranasais , Sinusite , Humanos , Sinusite Maxilar/diagnóstico por imagem , Sinusite Maxilar/microbiologia , Seio Maxilar/diagnóstico por imagem , Estudos Retrospectivos , Sinusite/microbiologia
9.
Sensors (Basel) ; 24(6)2024 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-38544195

RESUMO

Accurate paranasal sinus segmentation is essential for reducing surgical complications through surgical guidance systems. This study introduces a multiclass Convolutional Neural Network (CNN) segmentation model by comparing four 3D U-Net variations-normal, residual, dense, and residual-dense. Data normalization and training were conducted on a 40-patient test set (20 normal, 20 abnormal) using 5-fold cross-validation. The normal 3D U-Net demonstrated superior performance with an F1 score of 84.29% on the normal test set and 79.32% on the abnormal set, exhibiting higher true positive rates for the sphenoid and maxillary sinus in both sets. Despite effective segmentation in clear sinuses, limitations were observed in mucosal inflammation. Nevertheless, the algorithm's enhanced segmentation of abnormal sinuses suggests potential clinical applications, with ongoing refinements expected for broader utility.


Assuntos
Aprendizado Profundo , Sinusite , Humanos , Sinusite/diagnóstico por imagem , Redes Neurais de Computação , Seio Maxilar , Tomografia Computadorizada por Raios X/métodos , Processamento de Imagem Assistida por Computador/métodos
11.
Clin Implant Dent Relat Res ; 26(2): 402-414, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38317374

RESUMO

AIMS: The aim of this randomized controlled clinical trial was to compare the gene expression, micro-CT, histomorphometrical analysis between biphasic calcium phosphate (BCP) of 70/30 ratio and deproteinized bovine bone mineral (DBBM) in sinus augmentation. MATERIALS AND METHODS: Twenty-four patients in need for sinus floor augmentation through lateral approach were randomized into BCP 70/30 ratio or DBBM. After at least 6 months of healing, a total of 24 bone specimens were collected from the entire height of the augmented bone at the area of implant placement and underwent micro-CT, histomorphometric and gene expression analysis. The 12 bone specimens of BCP 70/30 ratio were equally allocated to micro-CT and histologic analysis (test group, n = 6) and gene expression analysis (test group, n = 6). Similarly, the 12 bone specimens of DBBM were also allocated to micro-CT and histologic analysis (control group, n = 6) and gene expression analysis (control group, n = 6). The newly formed bone, remaining graft materials and relative change in gene expression of four target genes were assessed. RESULTS: The micro-CT results showed no statistically significant difference in the ratio of bone volume to total volume (BV/TV ratio) for the two groups (BCP 41.51% vs. DBBM 40.97%) and the same was true for residual graft material to total volume (GV/TV ratio, BCP 9.97% vs. DBBM 14.41%). Similarly, no significant difference was shown in the histological analysis in terms of bone formation, (BCP 31.43% vs. DBBM was 30.09%) and residual graft area (DBBM 40.76% vs. BCP 45.06%). With regards to gene expression, the level of ALP was lower in both groups of bone grafted specimens compared with the native bone. On the contrary, the level of OSX, IL-1B and TRAP was higher in augmented bone of both groups compared with the native bone. However, the relative difference in all gene expressions between BCP and DBBM group was not significant. CONCLUSIONS: The BCP, HA/ß-TCP ratio of 70/30 presented similar histological and micro-CT outcomes in terms of new bone formation and residual graft particles with DBBM. The gene expression analysis revealed different gene expression patterns between augmented and native bone, but showed no significant difference between the two biomaterials.


Assuntos
Substitutos Ósseos , Hidroxiapatitas , Levantamento do Assoalho do Seio Maxilar , Humanos , Animais , Bovinos , Levantamento do Assoalho do Seio Maxilar/métodos , Microtomografia por Raio-X , Substitutos Ósseos/uso terapêutico , Minerais , Expressão Gênica , Seio Maxilar , Transplante Ósseo/métodos , Produtos Biológicos
12.
Medicina (Kaunas) ; 60(2)2024 Jan 27.
Artigo em Inglês | MEDLINE | ID: mdl-38399510

RESUMO

Background and Objectives: Chronic sinusitis is a commonly encountered diagnosis for otorhinolaryngologists. The profound negative effect of rhinosinusitis on patients' quality of life is frequently overlooked, and surgical lines of treatment are numerous. The aim of the study was to assess the comparative efficacy of endoscopic middle meatal antrostomy with the endoscopic prelacrimal recess approach, combined with middle meatal antrostomy in the treatment of unilateral chronic maxillary sinus lesion. Materials and Methods: Thirty patients with unilateral chronic maxillary sinus lesions enrolled in the study at Alahsa hospital. Patients were divided into two groups: 15 treated through a middle meatal antrostomy and 15 treated via a combined middle meatal antrostomy and prelacrimal recess approach. Demographic and clinical information of the patients, including the medical history, CT scan findings, diagnosis, recurrence, and complications, were gathered and analyzed. Pre- and postoperative clinical findings were graded utilizing the Lund-Kennedy Endoscopic Scoring System. Results: The enrolled patients varied in age from 18 to 56, with 60% being male and 40% being female. Antrochoanal polyp, maxillary sinus mucocele, and unilateral allergic fungal sinusitis were among the pathological diagnoses. The follow-up period averaged 14.3 months. Following surgery, two patients in Group II encountered nasal discomfort, which included synechia and epiphora. The success rate for preserving a patient's disease-free condition was 86.7%. A statistically significant difference in disease-free incidence was observed among the patients in group II. In group I, recurrence was identified in 26.7% of the patients. The postoperative symptoms diminished considerably, and the VAS score was reduced substantially. In Group II patients, however, there was no significant difference in scarring. Clinically significant differences were observed in the mean total Lund-Kennedy Endoscopic scores when compared to their preoperative values. Conclusions: Achieving endoscopic access to the sinus's anterior, lateral, inferior, and inferomedial regions is facilitated by operating via the prelacrimal recess, which is the most advantageous approach. This approach facilitates rapid mucosal healing by maintaining the integrity of the nasolacrimal duct and mucosal covering. The specific pathology, surgical objectives, surgeon expertise, and equipment accessibility influence the choice of endoscopic surgical technique.


Assuntos
Pólipos Nasais , Sinusite , Humanos , Masculino , Feminino , Seio Maxilar/cirurgia , Seio Maxilar/patologia , Qualidade de Vida , Pólipos Nasais/patologia , Sinusite/patologia , Endoscopia/métodos , Estudos Retrospectivos
13.
Medicina (Kaunas) ; 60(2)2024 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-38399630

RESUMO

Closing a recurrent oroantral fistula (OAF) that occurs at an infected sinus augmentation site is a challenge for clinicians. The recurrent OAF has a detrimental impact on bone regeneration and subsequent implant placement. This case report includes three cases in which sinus graft infection and OAF occurred after maxillary sinus augmentation (MSA). In these cases, treatments to control sinus infection were performed using an otolaryngologist; then, intraoral interventions comprising mucosal flap procedures, bone grafts, and barrier membrane applications were performed 2-5 times by oral surgeons. Nevertheless, OAF recurred persistently. The failure to stop OAF recurrence may be due to the inability to effectively block air pressure at the OAF site. Following a comprehensive debridement of the infected tissue at the previous sinus augmentation site, a pouch was created through sinus mucosal elevation. The perforated sinus mucosa at the OAF site was covered with a non-resorbable membrane in one case and with resorbable collagen membranes in the other two cases, followed by bone grafting within the pouch. Lastly, this procedure was completed by blocking the entrance of the pouch with a cortical bone shell graft and a resorbable collagen membrane. The cortical bone shell graft, obstructing the air pressure from the nasal cavity, facilitated bone formation, and, ultimately, allowed for implant placement. Within the limitations of the present case report, the application of a guided bone regeneration technique involving a cortical bone shell graft and a barrier membrane enabled the closure of the recurrent OAF and subsequent implant placement.


Assuntos
Procedimentos Cirúrgicos Pré-Protéticos Bucais , Fístula Bucoantral , Humanos , Fístula Bucoantral/etiologia , Fístula Bucoantral/cirurgia , Seio Maxilar/cirurgia , Transplante Ósseo/métodos , Procedimentos Cirúrgicos Pré-Protéticos Bucais/métodos , Colágeno/uso terapêutico
14.
Curr Med Imaging ; 20: 1-7, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38389337

RESUMO

BACKGROUND: The lack of knowledge of the relation of the maxillary sinus with the apexes of maxillary posterior teeth can lead to important complications during common dental procedures. This can be avoided using different imaging techniques, such as orthopantomography (OPG) and cone beam computed tomography (CBCT). The present study aims to compare the performance of OPG with CBCT in measuring the vertical distance of the apexes of posterior-superior teeth to the maxillary sinus. METHODS: This study corresponded to a cross-sectional study. OPGs and CBCT scans were obtained from the same individuals, and the qualitative and quantitative vertical distance of the apexes in relation to the maxillary sinus was categorized and measured in mm. RESULTS: A total of 28 pairs of OPGs and CBCT scans from the same patients were obtained. About 381 roots were analysed, which included 89 upper first premolars, 51 upper second premolars, 115 upper first molars, and 126 upper second molars. Projection/protrusion was observed with more frequency in molars, specially 1º molars in both OPG (n= 75, 65.2%) and CBCT (n= 31, 27%); however, 106 more cases (27.9%) were classified as projected in the OPG compared to CBCT (p < 0.05). When comparing the performance of the OPG and CBTC for analysing all roots qualitatively, there was a 57.8% agreement between both techniques. This difference was statistically significant (p <0.0001). Statistically significant differences were also observed when comparing the millimetric differences. CONCLUSION: This study showed that OPG is not an accurate technique to observe the relationship between the maxillary sinus and the apexes of the upper posterior teeth. In those cases where precision is required when performing dental procedures in this area, CBCT should be used. When not available, the clinicians should be aware of the limitations of the OPG and add other complementary techniques.


Assuntos
Seio Maxilar , Raiz Dentária , Humanos , Estudos Transversais , Seio Maxilar/diagnóstico por imagem , Radiografia Panorâmica , Tomografia Computadorizada de Feixe Cônico/métodos
15.
JNMA J Nepal Med Assoc ; 62(270): 114-117, 2024 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-38409973

RESUMO

Introduction: Maxillary sinus due to its proximity to posterior maxillary teeth could be affected by their pathology. Since cone beam computed tomography is the go-to for 3-D imaging in dental set-up. This study aimed to find out the prevalence of periodontal lesions among maxillary sinus mucosal thickening visiting the Department of Oral Medicine and Radiology of a tertiary care centre. Methods: This descriptive cross-sectional study was conducted in the Department of Oral Medicine and Radiology of a tertiary care centre from 01 February 2021 to 30 June 2021 after obtaining ethical approval from the Institutional Review Committee. The medical records from 01 January 2019 to 31 December 2019 were retrieved. The identification of maxillary sinus mucosal thickening of more than 3 mm, in cone beam computed tomography images, was registered separately for the right and left sinuses of each patient. The presence of periodontal lesions of posterior teeth was recorded. A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval. Results: Among 195 maxillary sinus mucosal thickening, periodontal lesions were found in 74 (37.95%) (31.14-44.76, 95% Confidence Interval) maxillary sinuses of 46 patients. The mean age was 53.67±12.72 years and 30 (65.21%) were males. Conclusions: The prevalence of periodontal lesions among maxillary sinus mucosal thickening in CBCT images was similar to other studies done in similar settings. Keywords: cone beam computed tomography; maxillary sinus; periodontal disease; prevalence.


Assuntos
Seio Maxilar , Radiologia , Masculino , Humanos , Adulto , Pessoa de Meia-Idade , Idoso , Feminino , Seio Maxilar/diagnóstico por imagem , Seio Maxilar/patologia , Estudos Transversais , Centros de Atenção Terciária , Tomografia Computadorizada de Feixe Cônico/métodos
16.
J Appl Oral Sci ; 32: e20230406, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38359269

RESUMO

OBJECTIVE: The aim of this population-based retrospective study was to compare the osteogenic effect of newly formed bone after maxillary sinus floor elevation (MSFE) and simultaneous implantation with or without bone grafts by quantitatively analyzing trabecular bone parameters. METHODOLOGY: A total of 100 patients with missing posterior maxillary teeth who required MSFE and implantation were included in this study. Patients were divided into two groups: the non-graft group (n=50) and the graft group (n=50). Radiographic parameters were measured using cone beam computed tomography (CBCT), and the quality of newly formed bone was analyzed by assessing trabecular bone parameters using CTAn (CTAnalyzer, SkyScan, Antwerp, Belgium) software. RESULTS: In the selected regions of interest, the non-graft group showed greater bone volume/total volume (BV/TV), bone surface/total volume (BS/TV), trabecular number (Tb. N), and trabecular thickness (Tb. Th) than the graft group (p<0.001). The non-graft group showed lower trabecular separation (Tb. Sp) than the graft group (p<0.001). The incidence of perforation and bleeding was higher in the graft group than in the non-graft group (p<0.001), but infection did not significantly differ between groups (p>0.05). Compared to the graft group, the non-graft group showed lower postoperative bone height, gained bone height and apical bone height (p<0.001). CONCLUSION: MSFE with and without bone grafts can significantly improve bone formation. In MSFE, the use of bone grafts hinders the formation of good quality bone, whereas the absence of bone grafts can generate good bone quality and limited bone mass.


Assuntos
Levantamento do Assoalho do Seio Maxilar , Humanos , Levantamento do Assoalho do Seio Maxilar/métodos , Estudos Retrospectivos , Osteogênese , Seio Maxilar/diagnóstico por imagem , Seio Maxilar/cirurgia , Osso Esponjoso
17.
Int J Oral Maxillofac Implants ; 39(1): 107-118, 2024 Feb 27.
Artigo em Inglês | MEDLINE | ID: mdl-38416004

RESUMO

PURPOSE: To evaluate the impact of different approaches to sinus membrane perforation (SMP) repair on bone formation, postoperative complications, and implant loss risk. MATERIALS AND METHODS: Electronic searches on PubMed, Web of Science, Scopus, Embase, and Cochrane Library databases were conducted for publications up to February 2021. All included articles reported SMPs submitted for repair. The proportion of implant loss in repaired SMP sites was calculated using a random-effects model meta-analysis. RESULTS: A total of 130 studies reporting SMP repair protocols were included in the systematic review, with 20 selected for meta-analysis. A total of 1,972 sinuses that were perforated and repaired during sinus elevation using different approaches were included in the qualitative analysis. The resorbable collagen membrane was the most commonly reported treatment. The presence of sinusitis was the most frequently described complication. Regarding bone parameters, the majority of studies described no differences between perforated and repaired sinuses and intact membranes. No difference in the implant loss proportion was observed between sites with repaired SMP compared to undetected SMP. The proportion of implant loss in repaired sinuses membrane sites (independent of the material or implant placement time) was 4% (95% CI: 2.0 to 8.0). In meta-regression analysis, no association was observed between the SMP size and implant loss proportion (P = .86). CONCLUSIONS: The materials and techniques indicated for SMP management seem to securely seal the maxillary sinus, without a negative effect on the ultimate survival of the implants placed in the affected sinuses.


Assuntos
Seio Maxilar , Complicações Pós-Operatórias , Humanos , Seio Maxilar/cirurgia , Membranas , Osteogênese
18.
Int J Oral Sci ; 16(1): 11, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38302479

RESUMO

ABSTARCT: Odontogenic maxillary sinusitis (OMS) is a subtype of maxillary sinusitis (MS). It is actually inflammation of the maxillary sinus that secondary to adjacent infectious maxillary dental lesion. Due to the lack of unique clinical features, OMS is difficult to distinguish from other types of rhinosinusitis. Besides, the characteristic infectious pathogeny of OMS makes it is resistant to conventional therapies of rhinosinusitis. Its current diagnosis and treatment are thus facing great difficulties. The multi-disciplinary cooperation between otolaryngologists and dentists is absolutely urgent to settle these questions and to acquire standardized diagnostic and treatment regimen for OMS. However, this disease has actually received little attention and has been underrepresented by relatively low publication volume and quality. Based on systematically reviewed literature and practical experiences of expert members, our consensus focuses on characteristics, symptoms, classification and diagnosis of OMS, and further put forward multi-disciplinary treatment decisions for OMS, as well as the common treatment complications and relative managements. This consensus aims to increase attention to OMS, and optimize the clinical diagnosis and decision-making of OMS, which finally provides evidence-based options for OMS clinical management.


Assuntos
Sinusite Maxilar , Humanos , Sinusite Maxilar/diagnóstico por imagem , Sinusite Maxilar/etiologia , Sinusite Maxilar/terapia , Consenso , Seio Maxilar , Odontogênese
19.
Int J Implant Dent ; 10(1): 9, 2024 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-38372934

RESUMO

PURPOSE: Tricalcium phosphate (TCP) has osteoconductive ability and reportedly offers similar clinical results as autogenous bone grafts in dental implant treatment. However, few reports quantify temporal changes in augmented bone volume after sinus augmentation. We aimed to establish a three-dimensional (3D) quantification method to assess bone volume after sinus augmentation and to evaluate biocompatibility of the TCP plate. METHODS: Maxillary sinus floor augmentation was performed employing the lateral window technique, and plate-shaped ß-TCP (TCP plate) was used instead of granular bone grafting materials. After lifting the sinus membrane, the TCP plate was inserted and supported by dental implants or micro-screws. The changes in bone volumes in the maxillary sinus before and after surgery were recorded using cone-beam computed tomography, saved as Digital Imaging and Communications in Medicine-formatted files, and transformed to Standard Triangle Language (STL)-formatted files. Pre- and post-operative STL data of bone volume were superimposed, and the augmented bone volume was calculated. Moreover, changes in bone volumes, TCP plate resorption rates, and bone heights surrounding the implants were three dimensionally quantified. RESULTS: Fifteen implants in nine subjects were included in this study. TCP plates secured long-term space making, with results similar to those of granular bone substitutes. Newly formed bone was identified around the implant without bone graft material. TCP plate was absorbed and gradually disappeared. CONCLUSIONS: A novel 3D quantification method was established to evaluate changes in bone volume. Clinical application of TCP plate in sinus augmentation could be a better procedure in terms of prognosis and safety.


Assuntos
Substitutos Ósseos , Fosfatos de Cálcio , Levantamento do Assoalho do Seio Maxilar , Humanos , Substitutos Ósseos/uso terapêutico , Seio Maxilar/diagnóstico por imagem , Seio Maxilar/cirurgia , Placas Ósseas
20.
BMC Oral Health ; 24(1): 253, 2024 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-38374033

RESUMO

BACKGROUND: Sex estimate is a key stage in forensic science for identifying individuals. Some anatomical structures may be useful for sex estimation since they retain their integrity even after highly severe events. However, few studies are focusing on the Chinese population. Some researchers used teeth for sex estimation, but comparison with maxillary sinus were lack. As a result, the objective of this research is to develop a sex estimation formula for the northwestern Chinese population by the volume of the maxillary sinus and compare with the accuracy of sex estimation based on teeth through cone-beam computed tomography (CBCT). METHODS: CBCT images from 349 samples were used to establish and verify the formula. The volume of both the left and right maxillary sinuses was measured and examined for appropriate formula coefficients. To create the formula, we randomly picked 80% of the data as the training set and 20% of the samples as the testing set. Another set of samples, including 20 males and 20 females, were used to compare the accuracy of maxillary sinuses and teeth. RESULTS: Overall, sex estimation accuracy by volume of the left maxillary sinus can reach 78.57%, while by the volume of the right maxillary sinus can reach 74.29%. The accuracy for females, which can reach 91.43% using the left maxillary sinus, was significantly higher than that for males, which was 65.71%. The result also shows that maxillary sinus volume was higher in males. The comparison with the available results using measurements of teeth for sex estimation performed by our group showed that the accuracy of sex estimation using canines volume was higher than the one using maxillary sinus volume, the accuracies based on mesiodistal diameter of canine and first molar were the same or lower than the volume of maxillary sinus. CONCLUSIONS: The study demonstrates that measurement of maxillary sinus volume based on CBCT scans was an available and alternative method for sex estimation. And we established a method to accurately assess the sex of the northwest Chinese population. The comparison with the results of teeth measurements made the conclusion more reliable.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Seio Maxilar , Masculino , Feminino , Humanos , Seio Maxilar/diagnóstico por imagem , Tomografia Computadorizada de Feixe Cônico/métodos , Dente Molar , Maxila/diagnóstico por imagem , China
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