Brazilian Dental Science最新文献_第8页

Effect of prosthetic design and restorative material on the stress distribution of implant-supported 3-unit fixed partial dentures: 3D-FEA 修复体设计和修复材料对种植支撑三单元固定局部义齿应力分布的影响:3D-FEA

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e3523

Mohamed Ahmed, A. Hamdy, G. A. Fattah, A. Elfadl

引用次数: 2

Recurring oral erythema multiforme-like lesions elicited by COVID-19 infection: a case report COVID-19感染引起复发性口腔多形性红斑1例

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e2960

M. S. Al-Akhali, E. Halboub, W. Ibraheem, Hamza Khalid Khan, A. M. Hummadi

{"title":"Recurring oral erythema multiforme-like lesions elicited by COVID-19 infection: a case report","authors":"M. S. Al-Akhali, E. Halboub, W. Ibraheem, Hamza Khalid Khan, A. M. Hummadi","doi":"10.4322/bds.2022.e2960","DOIUrl":"https://doi.org/10.4322/bds.2022.e2960","url":null,"abstract":"Oral mucosa could be the first site infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) –the causative agent of coronavirus disease 2019 (COVID-19). Indeed, different oral and paraoral lesions, conditions and symptoms have been reported in patients with COVID-19. Experts thought that such oral lesions could be secondary to the COVID-19-associated deterioration of systemic health or due to treatments of COVID-19. We present here a case of a 24-year-old male presented with painful multiple ulcers involving the labial and buccal mucosae bilaterally after a while of feeling very mild symptoms that laboratory-confirmed by reverse-transcription polymerase chain reaction to be COVID-19. Involvement of eyes was also reported. The above clinical presentation was consistent with minor erythema multiform. Many topical preparations were prescribed but with limited improvement. Hence, oral prednisolone was prescribed with a 40-mg loading dose that was tapered by 10 mg every 3 days. Complete healing of oral mucosa was observed on the 10 day. Strikingly, the patient got affected with the second episode of similar oral lesions 5 months later without any apparent triggering factors, suggestive a long term effects of COVID-19 in a subset of patients. The present case report provides dentists with useful information and increases their awareness regarding possible involvement of oral cavity with multiple ulcerative lesions associated with COVID-19. © 2022, Universidade Estadual Paulista, Institute of Science and Technology of Sao Jose dos Campos. All rights reserved.","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84736661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Characterization of sound enamel and natural white spot lesions 健全牙釉质和天然白斑病变的特征

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e3488

Erika Michele dos Santos Araújo, C. Vidal, A. Z. Freitas, N. Wetter, A. B. Matos

{"title":"Characterization of sound enamel and natural white spot lesions","authors":"Erika Michele dos Santos Araújo, C. Vidal, A. Z. Freitas, N. Wetter, A. B. Matos","doi":"10.4322/bds.2022.e3488","DOIUrl":"https://doi.org/10.4322/bds.2022.e3488","url":null,"abstract":"Objective: To compare optical, morphological, chemical, and physical aspects of the sound enamel and white spot lesions (WSL) classified as ICDAS 2. Material and Methods: Seventeen human molars with one surface presenting WSL and a sound surface (2 x 2 mm window) were characterized by Quantitative light-induced fluorescence (QLF ® ), Optical coherence tomography (OCT), microhardness, and Raman spectroscopy. The ANOVA and Tukey’s test were used at 5% significance level. Results: The QLF comparison between distinct substrates yielded decreased ∆ Q (integrated fluorescence loss) of -15,37%mm 2 and -11,68% ∆ F (fluorescence loss) for WSL. The OCT detected mean lesion depth of 174,43 µm. ANOVA could not detect differences in the optical attenuation coefficient between the substrates (p>0.05). Lower microhardness measures were observed in WSL than on sound enamel (p<0.05). The Raman spectra showed four vibrational phosphate bands (v1, v2, v3, v4), where the highest peak was at 960.3 cm -1 (v1) for both substrates. However, a 40% decrease in phosphate (v1) was detected in WSL. The peak at 1071 cm -1 was higher for sound enamel, indicating the presence of a phosphate band instead of the B-type carbonate. The spectra showed higher intensity of the organic composition at 1295 cm -1 and 1450 cm -1 for WSL. Conclusion: Non-invasive QLF, OCT and Raman spectroscopy were able to distinguish differences in fluorescence, optical properties, and organic/inorganic components, respectively, between sound enamel and WSL, validated by the destructive microhardness analysis.","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75148328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the clinical effects of impacted lower third molar tooth on adjacent oral tissues 下第三磨牙阻生对邻近口腔组织的临床效果评价

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e3024

M. Etetafia, M. Obaroefe

引用次数: 0

Effect of desensitizing dentifrices on eroded dentin wettability 脱敏牙本质对侵蚀牙本质润湿性的影响

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e3432

Raisa Castelo, M. M. Arnez, F. Curylofo-Zotti, S. Corona, T. C. Dotta, L. A. Almeida, A. Ramos, A. Catirse

引用次数: 0

Replacement of maxillary lateral incisors with digitally manufactured single tooth retained all-ceramic pontics: a clinical report 数字制造单牙保留全陶瓷支架替代上颌侧切牙的临床报告

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e2856

Bahar Elter, Akn Alada, Muharrem Erhan Çömlekolu, Mine Dündar Çömlekolu

引用次数: 0

Erbium laser in the debonding of ceramics: a literature review 铒激光在陶瓷脱粘中的应用:文献综述

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e3154

N. Zanini, Amanda Caramel-Juvino, P. Ana, D. Zezell

{"title":"Erbium laser in the debonding of ceramics: a literature review","authors":"N. Zanini, Amanda Caramel-Juvino, P. Ana, D. Zezell","doi":"10.4322/bds.2022.e3154","DOIUrl":"https://doi.org/10.4322/bds.2022.e3154","url":null,"abstract":"Santo André, SP, Brazil. ABSTRACT Background: The debonding of crowns and ceramic veneers with laser is already a reality in the clinic. It presents benefits in comparison to traditional removal with the use of a rotating instrument; however, there is still no consolidated protocol and many professionals use it without the necessary scientific basis. Objective: The aim of this work was to perform a literature review on the debonding of indirect ceramic restorations using the Er:YAG and Er,Cr:YSGG lasers to provide clinical professionals and the scientific community a careful analysis, and also to guiding the use of irradiation at laser for such procedures. Methods: Bibliographic searches were performed in the following databases: Pubmed, Web of Science and Google Scholar. According to the inclusion criteria adopted, twenty-seven clinical and in vitro studies were selected in the period from 2007 to 2021. In the present work, the composition of the crowns and facets, as well as the types of cement and the laser irradiation protocols adopted in the selected studies is detailed. Conclusions: It was concluded that the use of erbium lasers for debonding of indirect ceramic restorations proved to be more selective and conservative when compared to removal with a rotary diamond instrument. Furthermore, it was shown to be in more efficient in debonding different types of ceramics. However, there are great variations in the “debonding” protocols, which emphasizes the need for further studies that seek to standardize the irradiation protocols considering","PeriodicalId":37577,"journal":{"name":"Brazilian Dental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74033386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intentional foraminal enlargement: a systematic review with bibliometric analysis 有意椎间孔扩大:文献计量分析的系统综述

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e3506

Lucas Peixoto de Araújo, W. L. O. Rosa, Lucas Pinto Carpena, Larissa Moreira Pinto, Luiz Antônio Soares Falson, Nádia de Souza Ferreira, E. L. Sousa

引用次数: 1

Assessment of lateral and vertical tissue displacement obtained by the retraction cord and the Magic Foam® paste: a randomized controlled clinical trial 评估通过牵索和Magic Foam®膏体获得的横向和垂直组织位移:一项随机对照临床试验

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e3294

Nermin Ahmed Abd El Gawwad. Omaima Salah El Din El Mahallawi, G. Naggar

引用次数: 0

How can the dental surgeon promote oral health in patients submitted to chemotherapy? 牙科医生如何促进接受化疗病人的口腔健康?

Brazilian Dental Science Pub Date : 2022-01-01 DOI: 10.4322/bds.2022.e3013

M. Lessa, C. Patussi, Carolina Ferrairo Danieletto Zanna, L. Sassi, G. Z. Ferreira

引用次数: 0