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1.
J Med Case Rep ; 18(1): 152, 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38576053

RESUMO

BACKGROUND: Reconstruction of the entire dentition with odontogenic keratocyst is a very challenging quandary. Most cases of odontogenic keratocyst are often reported to be benign, resulting in severe occlusal discrepancies with the maxillary and mandibular dentition. Dental radiographs occasionally reveal an uncommon, locally aggressive developing cyst termed as odontogenic keratocyst, which is typically located in the posterior jaw. When this cyst occurs in the anterior region, it is often misdiagnosed with other periapical lesions due to its lack of response to pulp vitality tests. CASE PRESENTATION: This clinical case scenario demarcates the endodontic management of a patient diagnosed with odontogenic keratocyst. A 37-year-old Indian male patient reported to the department with throbbing pain in the lower left posterior tooth requiring endodontic therapy. This patient also presented with odontogenic keratocyst in the anterior region of the jaw, for which he had undergone surgical rehabilitation. This case report highlights the clinical protocol for the endodontic therapy in patient diagnosed with ododntogenic keratocyst. Masticatory impairment was not visible after the follow-up period and the treatment outcome was successful. CONCLUSION: This case report details the presentation, characteristic radiographic findings, and endodontic management of a patient with an extremely rare condition of odontogenic keratocyst. The management involves multidisciplinary approach for the rehabilitation.


Assuntos
Cistos Odontogênicos , Tumores Odontogênicos , Humanos , Masculino , Adulto , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Cistos Odontogênicos/patologia , Diagnóstico Diferencial
2.
J Cancer Res Ther ; 20(1): 488-492, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-38554373

RESUMO

Glandular odontogenic cyst (GOC) is a rare developmental odontogenic cyst from the cell rests of Serres. GOC is locally aggressive with a tendency toward recurrence. The most common site of occurrence is the anterior mandible with an asymptomatic presentation. Radiographically, it presents as unilocular or multilocular radiolucency. It bears histopathological resemblance to low-grade mucoepidermoid carcinoma. We report two cases of GOC occurring in a 16-year-old and a 33-year-old male patient with a review of the clinical presentation, histopathological features, and diagnostic aspects of GOC reported so far in literature.


Assuntos
Carcinoma Mucoepidermoide , Cistos Odontogênicos , Adulto , Humanos , Masculino , Carcinoma Mucoepidermoide/diagnóstico , Mandíbula/patologia , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Adolescente
3.
J Craniomaxillofac Surg ; 52(3): 324-333, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38368215

RESUMO

The aim of this study was to evaluate the clinical efficacy of alcohol-based therapy for patients with large odontogenic keratocysts (OKCs). The study was implemented as a retrospective, single-center study. Patients treated with ethanol-based therapy for odontogenic keratocyst were retrospectively evaluated for baseline and postoperative data. The pre- and postoperative clinical situation and the extent of radiographic shrinkage were compared. The event is defined as the achievement of >50% reduction in cyst volume. The cyst reduction rate calculated on panoramic radiographs ranged from 7.4% to 99.9% (mean [standard deviation] 55.3% [27.9%]) and was statistically significant (P < 0.05). Specifically, it has been found that, radiographically, 47.6% of patients achieved >50% reduction in cyst volume within 12 months. The continuous cortical bone was rebuilt, and the cyst cavity was filled with regenerated trabecular bone. The 22 included patients presented with nonclinical problems, had no need for further intervention, and exhibited persistent impaction of the teeth. The results of this study demonstrated that ethanol-based therapy triggered marked radiographic reductions of large OKC, indicating that using this technique is efficient.


Assuntos
Cistos Odontogênicos , Tumores Odontogênicos , Humanos , Estudos Retrospectivos , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Etanol/uso terapêutico , Resultado do Tratamento
4.
Int J Oral Sci ; 16(1): 16, 2024 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-38403665

RESUMO

Odontogenic keratocyst (OKC) is a common jaw cyst with a high recurrence rate. OKC combined with basal cell carcinoma as well as skeletal and other developmental abnormalities is thought to be associated with Gorlin syndrome. Moreover, OKC needs to be differentiated from orthokeratinized odontogenic cyst and other jaw cysts. Because of the different prognosis, differential diagnosis of several cysts can contribute to clinical management. We collected 519 cases, comprising a total of 2 157 hematoxylin and eosin-stained images, to develop digital pathology-based artificial intelligence (AI) models for the diagnosis and prognosis of OKC. The Inception_v3 neural network was utilized to train and test models developed from patch-level images. Finally, whole slide image-level AI models were developed by integrating deep learning-generated pathology features with several machine learning algorithms. The AI models showed great performance in the diagnosis (AUC = 0.935, 95% CI: 0.898-0.973) and prognosis (AUC = 0.840, 95%CI: 0.751-0.930) of OKC. The advantages of multiple slides model for integrating of histopathological information are demonstrated through a comparison with the single slide model. Furthermore, the study investigates the correlation between AI features generated by deep learning and pathological findings, highlighting the interpretative potential of AI models in the pathology. Here, we have developed the robust diagnostic and prognostic models for OKC. The AI model that is based on digital pathology shows promise potential for applications in odontogenic diseases of the jaw.


Assuntos
Síndrome do Nevo Basocelular , Cistos Odontogênicos , Tumores Odontogênicos , Humanos , Inteligência Artificial , Diagnóstico Diferencial , Cistos Odontogênicos/diagnóstico por imagem , Tumores Odontogênicos/patologia , Prognóstico
5.
Dent Clin North Am ; 68(2): 277-295, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38417991

RESUMO

This article addresses jaw lesions including cysts and benign odontogenic tumors in terms of their definition and clinical and imaging features and discusses pertinent differential diagnoses..


Assuntos
Cistos , Cistos Odontogênicos , Tumores Odontogênicos , Humanos , Cistos/diagnóstico , Arcada Osseodentária , Tumores Odontogênicos/diagnóstico por imagem , Tumores Odontogênicos/patologia , Diagnóstico Diferencial , Cistos Odontogênicos/diagnóstico por imagem
6.
Oral Radiol ; 40(2): 319-326, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38165531

RESUMO

Dentigerous cysts are known as the second most common type of cyst in the jaws. The cyst is one of the lesions occurred frequently in the posterior body of the mandible and is often related to the unerupted third molar and forms around the crown of the unerupted tooth attaching at the cementoenamel junction. Such characteristic appearances are the diagnostic points differentiating from ameloblastoma or odontogenic keratocyst. However, it would be hard for us to diagnose it as a dentigerous cyst if the lesion does not show its typical appearance. We experienced two cases of dentigerous cysts which did not form around the crown of the unerupted tooth on radiologically. Both cysts were relatively large and resorbed adjacent teeth roots. Therefore, an ameloblastoma or an odontogenic keratocyst was suspected rather than a dentigerous cyst as the imaging diagnosis. The biopsy revealed that the lesion was a "dentigerous cyst" in one of the cases and "developmental cyst with inflammation" in another case. After the excision, the histopathological diagnosis was a dentigerous cyst with inflammation in both cases. This report shows the two cases of dentigerous cysts focusing on panoramic radiography and CT images. Also, we discuss the differential diagnosis by reconsidering those diagnostic points.


Assuntos
Ameloblastoma , Cisto Dentígero , Cistos Odontogênicos , Dente não Erupcionado , Humanos , Cisto Dentígero/diagnóstico por imagem , Cisto Dentígero/patologia , Ameloblastoma/diagnóstico por imagem , Radiografia Panorâmica , Cistos Odontogênicos/diagnóstico por imagem , Inflamação , Tomografia Computadorizada por Raios X
7.
Swiss Dent J ; 133(12): 810-815, 2023 Dec 04.
Artigo em Alemão | MEDLINE | ID: mdl-38051006

RESUMO

The radicular cyst is the most common odontogenic cyst and is caused by inflammation. It can become atypically large, although the size of the radiographic osteolysis says nothing about the entity of the lesion. This case shows an unusually large multilocular radicular cyst expanding buccally from tooth 46 in a patient with severe autism who can only be treated under general anesthesia. The clinical and radiological picture as well as the intraoperative situation was more indicative of an aggressive cyst or benign tumor. The lesion was surgically completely removed and the teeth 46, 47 and 48 were extracted because of poor compliance and prognosis. Histopathology revealed a radicular cyst. There were no postoperative complications. After eight months, the lesions had almost completely reossified.


Assuntos
Cistos Odontogênicos , Cisto Radicular , Humanos , Cisto Radicular/diagnóstico por imagem , Cisto Radicular/cirurgia , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Cistos Odontogênicos/patologia , Mandíbula/patologia , Radiografia , Cabeça/patologia
9.
Artigo em Alemão | MEDLINE | ID: mdl-37956662

RESUMO

OBJECTIVE: Odontogenic cysts may be of developmental or inflammatory origin. They are frequently observed in brachycephalic dogs. Due to their expansive growth, cysts in the maxilla may extend into the nasal cavity, obstruct the nasal airway and cause nasal discharge. Epithelial cysts may lead to a comparable clinical picture. A new endonasal endoscopic intervention for the removal of these cysts is described. MATERIAL AND METHODS: Four brachycephalic dogs (Boxer, Chihuahua, French bulldog, Pug) with unilateral cysts obstructing the nasal cavity were included in the study. The animals underwent clinical examination, computed tomography (CT) imaging and rhinoscopy examination. Histopathologic evaluation of the cyst wall was performed. In addition to dental surgery and conventional extraction of the involved tooth, the cyst wall was removed by endoscopic intervention via the physiologic nasal opening. Clinical course following treatment was assessed by rhinoscopy and CT. RESULTS: The main clinical signs were unilateral or bilateral serous to hemorrhagic nasal discharge. Nasal airflow was restricted in all patients. Removal of the cysts and involved teeth did not lead to any intra- and postoperative complications. No recurrence of the cysts was observed. Histologic diagnosis consisted of an epidermoid cyst, a follicular cyst, a radicular cyst, and a canine odontogenic parakeratinized cyst (COPC). Neoplastic transformation was excluded in all cases. CONCLUSIONS: Removal of the cyst wall may be performed by means of minimally invasive endoscopic intervention via the physiologic nasal entrance. The procedure is curative and carries the risk of only few complications. In cases in which treatment is restricted to extraction of the affected tooth, the nasal airway may remain obstructed due to a calcified cyst wall. CLINICAL RELEVANCE: In brachycephalic dogs, oronasal defects due to dental pathology are the most common reason for chronic nasal discharge, whereas in normocephalic dogs nasal neoplasia are. Odontogenic cysts carry importance as differential diagnosis of nasal discharge.


Assuntos
Craniossinostoses , Doenças do Cão , Obstrução Nasal , Neoplasias Nasais , Cistos Odontogênicos , Animais , Cães , Craniossinostoses/complicações , Craniossinostoses/veterinária , Doenças do Cão/diagnóstico por imagem , Doenças do Cão/cirurgia , Endoscopia/veterinária , Obstrução Nasal/etiologia , Obstrução Nasal/cirurgia , Obstrução Nasal/veterinária , Neoplasias Nasais/veterinária , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Cistos Odontogênicos/veterinária
10.
Oral Surg Oral Med Oral Pathol Oral Radiol ; 136(6): e171-e176, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37891120

RESUMO

Lowe syndrome (LS) is a rare disease (1:500,000) with X-linked recessive inheritance involving the kidneys, eyes, and nervous system. A Mexican 25-year-old male patient presented for diagnosis of multiple radiolucent lesions observed on routine radiographic examination. General aspects revealed cognitive delay, eye alterations, and kidney involvement, which support the diagnosis of LS. Radiolucent well-delimited lesions were observed in both mandibular angle and symphysis. Under general anesthesia, incisional biopsy and decompression were performed. Histological aspects led to diagnosing odontogenic keratocyst (OKC) for all lesions. The lesions in the right and left mandibular angles were decompressed, and the symphyseal lesion was enucleated. A 2-month follow-up shows the bone healing process. There are few reports detailing oral findings in LS. Here, we reported the first case of multiple OKC in a patient with LS. In addition, we performed a literature review on odontogenic lesions in patients affected by LS.


Assuntos
Síndrome Oculocerebrorrenal , Cistos Odontogênicos , Tumores Odontogênicos , Masculino , Humanos , Adulto , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Cistos Odontogênicos/patologia , Mandíbula/patologia , Diagnóstico Diferencial
11.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 58(9): 913-918, 2023 Sep 09.
Artigo em Chinês | MEDLINE | ID: mdl-37659849

RESUMO

Objective: To analyze the imaging features of cone-beam CT (CBCT) of ameloblastoma (AB), odontogenic keratocyst (OKC) and dentigerous cysts (DC) associated with the mandibular impacted third molars,so as to provide useful information for differential diagnosis of these lesions. Methods: The patients who were with complete clinical data, pathological diagnosis and CBCT images from AB, OKC and DC around the mandibular impacted third molars were collected in Peking University Hospital of Stomatology from August 2016 to December 2021. A total of 109 patients (14 were diagnosed as AB, 23 were diagnosed as OKC and the others were diagnosed as dental cysts) were collected, including 73 males and 36 females. The age ranged from 11 to 70. The analyzed imaging features included location and internal density of the lesions, bone expansion, root resorption of adjacent teeth and types of the impacted teeth. The Chi square test was used to compare the gender of different lesions, and the Fisher's exact test was used to compare imaging features of lesions. When P<0.05, there was a significant difference among the three. Logistic regression analysis was performed to determine the imaging features that significantly contribute to correct imaging diagnosis. Corresponding P-values were calculated for all factors from multivariate models. Results: In the 23 cases of OKC, no special location was observed for the center of the lesion, heterogeneous high-density were seen in 21.7% of the cases, 56.5% of the cases had no significant bone expansion and the impacted teeth were not specially oriented. Among the 14 AB, 7 cases (7/14) were mainly located in the ramus of the mandible, and all cases (14/14) had buccal/lingual expansion of the jaw, 8 cases (8/14) presented root resorption of the adjacent teeth, and mesial impacted mandibular third molar were seen in 6 cases (6/14). Among the 72 DC, 88.9% (64/72) of the cases were mainly limited to the crown of the impacted third molar, 72.2% (52/72) of the cases had no obvious bone expansion, inverted impacted teeth were shown in 56.9% (41/72) of the cases. There was a significant difference among the three groups (χ2=7.30, P=0.026) in gender. AB and odontogenic cyst were more common in men than in women, while the incidence of OKC was roughly equal between men and women.There were significant differences in the location (P<0.001), internal density (P=0.001) of the lesions, bone expansion (P<0.001) and types of the impacted teeth (P<0.001), while no statistical difference was found for root resorption of adjacent teeth (P=0.153). Logistics regression analysis showed that the location of the lesion, internal density, bone expansion, root resorption of adjacent teeth and the types of impacted teeth had significant effects on the accurate diagnosis of the three kinds of lesions. Conclusions: Location, internal density, bone expansion and types of the impacted teeth played an important role in the correct imaging diagnosis. Further analysis indicates that when the classification of impacted teeth and the location of lesions are considered synchronously, DC can be differentiated from AB and OKC.


Assuntos
Ameloblastoma , Cistos Odontogênicos , Reabsorção da Raiz , Dente Impactado , Masculino , Humanos , Feminino , Dente Serotino/diagnóstico por imagem , Dente Impactado/diagnóstico por imagem , Dente Molar , Tomografia Computadorizada de Feixe Cônico/métodos , Ameloblastoma/diagnóstico por imagem , Mandíbula/diagnóstico por imagem , Cistos Odontogênicos/diagnóstico por imagem
12.
BMC Oral Health ; 23(1): 660, 2023 09 13.
Artigo em Inglês | MEDLINE | ID: mdl-37704975

RESUMO

BACKGROUND: Enucleation, a surgical procedure, is commonly used to treat large jaw cysts, unicystic ameloblastomas and keratocysts. However, it remains unclear to what extent the jaw bone regenerates after enucleation. We aimed to evaluate the percentage and the survival analysis of jaw bone regeneration, in terms of cavity volume residual (CVR), in patients who underwent enucleation of large jaw cysts, unicystic ameloblastomas and keratocysts. METHODS: We collected data longitudinally from 75 patients who underwent jaw cystic lesions enucleation at the Stomatological Hospital of Xi'an Jiaotong University, between January 2015 and June 2021. All patients had both preoperative and postoperative cone-beam computed tomography (CBCT) imaging data. CBCT images were analyzed using Image J. Changes in the CVR were assessed at various follow-up time points, and the Kaplan-Meier method was utilized to evaluate the CVR over time. RESULTS: The patients had a mean age of 31.7 years (range: 5.5-72 years) with 58.66% of them being male. The postoperative CVR was 32.20% at three months, 21.10% at six months, 15.90% at 12 months, and 5.60% at 24 months. The percentage of CVR during follow-up periods for the initial size Quartile (Q)1 (212.54-1569.60 mm3) was substantially lower than those of Q2 and Q3 at and after seven months of follow-up and became statistically significant at the 12-month mark. CONCLUSION: This study demonstrates that spontaneous bone regeneration can occur after enucleation of large jaw cysts, unicystic ameloblastomas and keratocysts, even without the use of filler materials. The initial size of the lesion had a significant impact on the outcome of cystic lesion enucleation over time. To minimize the risks associated with radiation exposure and expenses, we recommend reducing the frequency of CT imaging follow-ups for patients with small initial cavity sizes (ranging from 212.54 to 1569.60 mm3).


Assuntos
Ameloblastoma , Cárie Dentária , Cistos Maxilomandibulares , Cistos Odontogênicos , Adulto , Feminino , Humanos , Masculino , Regeneração Óssea , Tomografia Computadorizada de Feixe Cônico , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Criança , Adolescente , Adulto Jovem , Pessoa de Meia-Idade , Idoso
13.
Int. j. odontostomatol. (Print) ; 17(3): 236-239, sept. 2023. ilus
Artigo em Inglês | LILACS | ID: biblio-1514374

RESUMO

A 31-year-old man is presented and is evaluated by panoramic radiography. As a finding, an extensive lesion with a cystic appearance was detected in the anterior part of the maxilla. Computed tomography shows a lesion corresponding to the characteristics of a cyst. In the histology the combination of two types of epithelium is observed, pseudostratified columnar and stratified squamous, confirming that this was a nasopalatine duct cyst.


Se presenta el caso de un hombre de 31 años, evaluado mediante radiografía panorámica. Como hallazgo se detecta una extensa lesión de aspecto quístico en la parte anterior del maxilar. En la tomografía computada se observa una lesión que corresponde a las carácterísticas de un quiste. La histología muestra una combinación de dos tipos de epitelio, pseudostratificado columnar y estratificado escamoso, confirmando que se trataba de un quiste del canal nasopalatino.


Assuntos
Humanos , Masculino , Adulto , Radiografia Panorâmica/métodos , Cistos Odontogênicos/diagnóstico por imagem , Doenças Maxilares/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos
14.
Niger J Clin Pract ; 26(8): 1152-1156, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37635610

RESUMO

Background: Odontogenic cysts (OCs) are commonly encountered lesions affecting the human jaws having special clinical and radiographic features depending on cyst type. The aim of this study was to determine the prevalence of odontogenic jaw cysts in a Libyan population in Benghazi and to compare these data with previously published reports from Libyan and other geographic areas. Materials and Methods: This is a descriptive study where screening of 2189 biopsies (retrieved from the archives of The Department of Oral Pathology/University of Benghazi, Libya) was performed for the sake of recognizing the three cysts chosen for the purpose of this study. Results: : Out of the screened lesions, 276 cases (12.6%) were diagnosed as odontogenic cysts in the period from 2006 to 2019. Of those, 67.39% were inflammatory and 32.61% were developmental in nature. Radicular cysts (60.5%) were the most frequent cysts followed by dentigerous cysts (14.8%) and keratocysts (14.5%). The mean ages of the patients were 32.3, 29.7, and 33.2 years, respectively. Occurrence of the cysts was noticed more in the maxilla than in the mandible (1.3:1). The overall male-to-female ratio was 1.1:1. Conclusions: The prevalence of odontogenic cysts was similar to that reported in a previous study in Libya and other countries irrespective to WHO (2017) classification of odontogenic cysts.


Assuntos
Cistos Odontogênicos , Cisto Radicular , Humanos , Feminino , Masculino , Estudos Retrospectivos , Prevalência , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/epidemiologia , Biópsia
15.
Gerodontology ; 40(3): 402-405, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37578305

RESUMO

OBJECTIVES: This report describes an unusual case of a multilocular idiopathic bone cavity (IBC) that presented as a botryoid odontogenic cyst situated between the mandibular lateral incisor and canine in an older adult. BACKGROUND: The IBC represents an intraosseous concavity that appears radiographically as a unilocular or multilocular radiolucent lesion found in various skeletal sites, including the jaw. Atypical cases of gnathic IBC have not been appreciated in the gerodontologic literature. MATERIALS AND METHODS: The teeth adjacent to the bony lesion had normal pulpal responses to cold. A full-thickness flap was elevated and provided a direct entry into a bony concavity, which was devoid of an epithelial lining and fluid. RESULTS: The lack of a cystic lining within the empty osseous lesion following surgical entry, concomitant with the vital pulpal status of the proximal teeth, led to a diagnosis of an IBC. The bony walls underwent curettage and copious irrigation prior to primary closure. A 10-month follow-up revealed partial evidence of osseous repair. The patient will continue to be monitored. CONCLUSION: Timely surgical intervention of central lesions of the jaws may improve clinical outcomes. Variants of the IBC should be included in the differential diagnosis of multilocular lesions, particularly in the geriatric population.


Assuntos
Cistos Odontogênicos , Idoso , Humanos , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Arcada Osseodentária , Diagnóstico Diferencial , Incisivo/patologia
16.
Head Face Med ; 19(1): 21, 2023 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-37268991

RESUMO

BACKGROUND: Odontogenic keratocyst is one of the most common benign odontogenic neoplasms with a high recurrence rate. Its resection has the potential to lead to mandibular segmental defects. In this case report, we describe a patient with odontogenic keratocyst who underwent radical resection using a novel distraction osteogenesis (DO) method to reconstruct mandibular segmental defect. CASE PRESENTATION: This case report describes a 19-year-old woman with odontogenic keratocyst of the mandible that recurred after multiple curettages and eventually necessitated radical resection. Mandibular segmental defect after radical resection was reconstructed using a novel DO method that involved directly contacting the segment ends of the defect without the transport disk. However, the distractor broke during the retention period, and a molding titanium plate was used for fixation. This novel distraction method achieved mandibular reconstruction and restored mandibular function and contour.


Assuntos
Ameloblastoma , Neoplasias Mandibulares , Reconstrução Mandibular , Cistos Odontogênicos , Tumores Odontogênicos , Osteogênese por Distração , Feminino , Humanos , Adulto Jovem , Adulto , Osteogênese por Distração/métodos , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Ameloblastoma/diagnóstico por imagem , Ameloblastoma/cirurgia , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Neoplasias Mandibulares/diagnóstico por imagem , Neoplasias Mandibulares/cirurgia
17.
Stomatologiia (Mosk) ; 102(3): 61-69, 2023.
Artigo em Russo | MEDLINE | ID: mdl-37341084

RESUMO

OBJECTIVE: The aim the studi. Differential diagnosis of retention cysts of the maxillary sinus with odontogenic cysts, acute and chronic sinusitis, aspergillosis, and mucocele in preparation for sinus-lifting surgery. MATERIAL AND METHODS: The analysis of the case histories of 265 patients aged 18-65 years of both sexes who were treated at the dental clinic «Rudenta Family¼ from 2016 to 2021 was carried out. On the basis of clinical symptoms and data of cone-beam computed tomography (CBCT), a description of the pathologies of HPV is given for the purpose of differential diagnosis and correct interdisciplinary interaction with ENT doctors for the purpose of dental implantation in the lateral parts of the upper jaw. RESULTS: In 90 (out of 265) patients (34%), a change in the condition of the maxillary sinus mucosa was detected. 18 patients (7%) for preoperative preparation were sent to the ENT department of the FSBI «CCB with polyclinic¼ of the UDP of the Russian Federation with diagnoses: chronic maxillary sinusitis of various etiologies and mucocele. In this group of patients, sinus lifting followed by dental implantation was performed 6 months after endoscopic maxillofacial surgery under the control of CBCT. Retention cyst Retention cysts of the maxillary sinus were of different sizes in 62 (23.4%) patients and, depending on the size and localization of the sinus-lifting was performed with simultaneous removal of the cyst, or without removal of the cyst. CONCLUSION: Retention cysts do not need to be removed as a preoperative preparation for sinus lifting. In the case of large sizes and difficulty in peeling the Schneider membrane, retention cysts are removed by a dental surgeon during antral augmentation as one of the stages of the operation. In such pathologies as odontogenic cyst, acute and chronic sinusitis, aspergillosis, mucocele, interdisciplinary interaction of ENT doctor and dentist is necessary. Differential diagnosis of maxillary snus pathology is carried out on the basis of clinical data and a picture of cone-beam computed tomography.


Assuntos
Aspergilose , Mucocele , Cistos Odontogênicos , Feminino , Masculino , Humanos , Seio Maxilar/diagnóstico por imagem , Seio Maxilar/cirurgia , Mucocele/complicações , Mucocele/diagnóstico por imagem , Mucocele/cirurgia , Cistos Odontogênicos/complicações , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Tomografia Computadorizada de Feixe Cônico
18.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao ; 45(2): 273-279, 2023 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-37157075

RESUMO

Objective To evaluate the accuracy of different convolutional neural networks (CNN),representative deep learning models,in the differential diagnosis of ameloblastoma and odontogenic keratocyst,and subsequently compare the diagnosis results between models and oral radiologists. Methods A total of 1000 digital panoramic radiographs were retrospectively collected from the patients with ameloblastoma (500 radiographs) or odontogenic keratocyst (500 radiographs) in the Department of Oral and Maxillofacial Radiology,Peking University School of Stomatology.Eight CNN including ResNet (18,50,101),VGG (16,19),and EfficientNet (b1,b3,b5) were selected to distinguish ameloblastoma from odontogenic keratocyst.Transfer learning was employed to train 800 panoramic radiographs in the training set through 5-fold cross validation,and 200 panoramic radiographs in the test set were used for differential diagnosis.Chi square test was performed for comparing the performance among different CNN.Furthermore,7 oral radiologists (including 2 seniors and 5 juniors) made a diagnosis on the 200 panoramic radiographs in the test set,and the diagnosis results were compared between CNN and oral radiologists. Results The eight neural network models showed the diagnostic accuracy ranging from 82.50% to 87.50%,of which EfficientNet b1 had the highest accuracy of 87.50%.There was no significant difference in the diagnostic accuracy among the CNN models (P=0.998,P=0.905).The average diagnostic accuracy of oral radiologists was (70.30±5.48)%,and there was no statistical difference in the accuracy between senior and junior oral radiologists (P=0.883).The diagnostic accuracy of CNN models was higher than that of oral radiologists (P<0.001). Conclusion Deep learning CNN can realize accurate differential diagnosis between ameloblastoma and odontogenic keratocyst with panoramic radiographs,with higher diagnostic accuracy than oral radiologists.


Assuntos
Ameloblastoma , Aprendizado Profundo , Cistos Odontogênicos , Tumores Odontogênicos , Humanos , Ameloblastoma/diagnóstico por imagem , Diagnóstico Diferencial , Radiografia Panorâmica , Estudos Retrospectivos , Cistos Odontogênicos/diagnóstico por imagem
19.
J Craniomaxillofac Surg ; 51(3): 143-150, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37045614

RESUMO

The study aimed to retrospectively analyze the reduction pattern of odontogenic keratocysts (OKCs) after decompression, followed by enucleation (EN), peripheral ostectomy (PO), and Carnoy's solution (CS) to establish the appropriate time for inserting implants, along with assessing the long-term success of conservative treatment with adjunctive therapy. The predictable variables were the reduction pattern and the study's treatment option. The outcome variable was the volumetric changes in the size of bony defects. These changes were determined using a percentage difference and a reduction rate. They were recorded after decompression and one, three, six, twelve, and eighteen months after EN. P-values of .05 were considered significant. The study included 66 patients with 71 OKCs. Males, younger ages, and mandibular OKCs significantly predominated. The decompression significantly changed the initial volume from 135.40 ± 1.2 cm3 to 101.55 ± 0.1 cm3 with 28.6 percentage difference and 25% reduction rate. At the end of the first and third months after EN, the reduction pattern is 50.0%-75.5% of the initial volume, with no significant prediction for the direction of the reduction pattern. After 18 months, all bony defects disappeared, with no recurrences for the next 18 years. In conclusion, the reduction pattern is 75.5% of its initial volume at the end of the third month after OKC management. Therefore, within the limitations of the study, its treatment approach seems to be an option amongst other protocols that includes a view to early implant based dental rehabilitation.


Assuntos
Descompressão Cirúrgica , Doenças Mandibulares , Doenças Maxilares , Cistos Odontogênicos , Humanos , Masculino , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Estudos Retrospectivos , Osteotomia , Feminino , Doenças Maxilares/diagnóstico por imagem , Doenças Maxilares/cirurgia , Doenças Mandibulares/diagnóstico por imagem , Doenças Mandibulares/cirurgia
20.
Artigo em Inglês | MEDLINE | ID: mdl-36878835

RESUMO

OBJECTIVE: This study assessed the diagnostic efficacy of apparent diffusion coefficient (ADC), texture features, and their combination for the differential diagnosis of odontogenic cysts and tumors with cyst-like features. STUDY DESIGN: In total, 14 dentigerous cysts (DCs), 12 odontogenic keratocysts (OKCs), and 6 unicystic ameloblastomas (UABs) were used as predictor variables in 32 outpatients who underwent magnetic resonance imaging. The outcome variables were ADC, texture features, and their combination for each lesion. Texture features including histogram and gray-level co-occurrence matrix (GLCM) were measured on ADC maps. Ten features were selected by using the Fisher coefficient method. The Kruskal-Wallis test and post hoc Mann-Whitney test with Bonferroni adjustment were used to analyze trivariate statistics. Statistical significance was established at P < .05. Receiver operating characteristic analysis was used to evaluate the diagnostic effect of ADC, texture features, and their combination in distinguishing the lesions from each other. RESULTS: Apparent diffusion coefficient, 1 histogram feature, 9 GLCM features, and their combination demonstrated significant differences between DC, OKC, and UAB (P ≤ .01). Receiver operating characteristic analysis revealed a high area under the curve of .95 to 1.00 for ADC, 10 texture features, and their combination. Sensitivity, specificity, and accuracy ranged from .86 to 1.00. CONCLUSIONS: Apparent diffusion coefficient and texture features, alone or in combination, can be clinically important in facilitating the distinction between these odontogenic lesions.


Assuntos
Imagem de Difusão por Ressonância Magnética , Cistos Odontogênicos , Humanos , Diagnóstico Diferencial , Imagem de Difusão por Ressonância Magnética/métodos , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/patologia , Imageamento por Ressonância Magnética , Curva ROC , Estudos Retrospectivos
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