Frontiers in Dentistry最新文献_第4页

Is Dentistry in Crisis? An Online Survey of Iranian Dentists’ Attitudes toward La Cascada Declaration 牙科是否面临危机？伊朗牙医对《卡斯卡达宣言》态度的在线调查

Frontiers in Dentistry Pub Date : 2024-03-04 DOI: 10.18502/fid.v21i9.15054

Ali Kazemian

引用次数: 0

Congenital Bilateral Missing of Permanent Mandibular Second Molars in a 10-Year-Old Child: A Case Report 一名 10 岁儿童先天性双侧下颌第二恒磨牙缺失：病例报告

Frontiers in Dentistry Pub Date : 2024-02-27 DOI: 10.18502/fid.v21i8.15004

Mehrsa Paryab

引用次数: 0

The Effect of Bioglass Coating on Microshear Bond Strength of Resin Cement to Zirconia 生物玻璃涂层对树脂水泥与氧化锆微剪切粘接强度的影响

Frontiers in Dentistry Pub Date : 2024-02-12 DOI: 10.18502/fid.v21i6.14887

Hanie Nojedehian, Maryam Moezzizadeh, Nahid Abdollahi, Fatemeh Soltaninejad, Haleh Valizadeh-Haghi

{"title":"The Effect of Bioglass Coating on Microshear Bond Strength of Resin Cement to Zirconia","authors":"Hanie Nojedehian, Maryam Moezzizadeh, Nahid Abdollahi, Fatemeh Soltaninejad, Haleh Valizadeh-Haghi","doi":"10.18502/fid.v21i6.14887","DOIUrl":"https://doi.org/10.18502/fid.v21i6.14887","url":null,"abstract":"Objectives: Durable bonding to zirconia is a challenging issue in dentistry. This study aimed to assess the effect of bioglass coating of zirconia on the microshear bond strength of resin cement to zirconia and to study the effect of thermocycling on this bond. \u0000Materials and Methods: This in-vitro experimental study was conducted on 60 yttria-stabilized tetragonal zirconia blocks in six groups (N=10) based on surface pretreatment and thermocycling. Surface pretreatments included no treatment control, alumina particle abrasion, and bioglass-coating of zirconia. Resin bonding was performed with Panavia F2.0 cements. Then, half of the specimens underwent a 24-hour incubation in 37°C water, while the other half were subjected to thermocycling (12000 cycles, 5-55°C, 60s for each batch) following the same incubation period. Subsequently, the microshear bond strength of the specimens was measured. Additionally, one block from each group was subjected to scanning electron microscopy and X-ray diffraction. The data were analyzed using Kruskal-Wallis and Mann-Whitney U tests. \u0000Results: There was a significant difference between the bond strength values of different groups (P<0.001). Alumina particle abrasion and bioglass coating equally increased the bond strength compared to the untreated control group (P<0.001). Thermocycling caused significant decreases in bond strength in all the groups (P<0.001); however, the bond strength value of the thermocycled bioglass-coated group was significantly higher than that reported for the thermocycled alumina particle abraded group (P=0.015). \u0000Conclusion: Despite the decrease in the bond strength values after thermocycling, the long-term efficacy of the bioglass coating of zirconia was promising.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"31 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139783484","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 Relationship between Sublingual Varices and Hypertension 评估舌下静脉曲张与高血压之间的关系

Frontiers in Dentistry Pub Date : 2024-02-12 DOI: 10.18502/fid.v21i7.14888

Zahra Jamali, K. Katebi, Hamed Alibabaei, Ahmad Jamei Khosroshahi

{"title":"Evaluation of the Relationship between Sublingual Varices and Hypertension","authors":"Zahra Jamali, K. Katebi, Hamed Alibabaei, Ahmad Jamei Khosroshahi","doi":"10.18502/fid.v21i7.14888","DOIUrl":"https://doi.org/10.18502/fid.v21i7.14888","url":null,"abstract":"Objectives: Sublingual varices are characterized by abnormally dilated veins. Some systemic conditions such as cardiovascular disease have been suggested to be associated with sublingual varices. Due to the convenience in examining the sublingual area, the present study aimed to assess the relationship between sublingual varices and hypertension. \u0000Materials and Methods: In this descriptive-analytic study, 500 patients were categorized into two groups: those with sublingual varices and those without. Two oral medicine specialists assessed the lesions, and the blood pressure of all patients was measured while they were in a relaxed sitting position. Age and gender data were recorded for all participants. Statistical analysis included t-test, chi-square, and logistic regression, with significance set at P<0.05. \u0000Results: The frequency of sublingual varices was 21.8%. Mean systolic blood pressure was 139.68±19.01mmHg in patients with sublingual varices and 118.09±13.78mmHg in patients without the lesions (P=0.561). Mean diastolic blood pressure was 100.45±17.81mmHg and 80.31±12.08mmHg in patients with and without sublingual varices, respectively (P<0.001). Smoking was significantly more prevalent among patients who had the lesions (P<0.05). Gender (P=0.686) and age (P=0.875) showed no significant relationship with sublingual varices, while smoking and blood pressure levels were significantly associated with these varices (P<0.001). \u0000Conclusion: It is advisable to monitor and manage blood pressure in patients with sublingual varices who may not be aware of their blood pressure status. Our results showed that smoking could be one of the predictive factors for sublingual varices.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"12 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139782736","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 Relationship between Sublingual Varices and Hypertension 评估舌下静脉曲张与高血压之间的关系

Frontiers in Dentistry Pub Date : 2024-02-12 DOI: 10.18502/fid.v21i7.14888

Zahra Jamali, K. Katebi, Hamed Alibabaei, Ahmad Jamei Khosroshahi

{"title":"Evaluation of the Relationship between Sublingual Varices and Hypertension","authors":"Zahra Jamali, K. Katebi, Hamed Alibabaei, Ahmad Jamei Khosroshahi","doi":"10.18502/fid.v21i7.14888","DOIUrl":"https://doi.org/10.18502/fid.v21i7.14888","url":null,"abstract":"Objectives: Sublingual varices are characterized by abnormally dilated veins. Some systemic conditions such as cardiovascular disease have been suggested to be associated with sublingual varices. Due to the convenience in examining the sublingual area, the present study aimed to assess the relationship between sublingual varices and hypertension. \u0000Materials and Methods: In this descriptive-analytic study, 500 patients were categorized into two groups: those with sublingual varices and those without. Two oral medicine specialists assessed the lesions, and the blood pressure of all patients was measured while they were in a relaxed sitting position. Age and gender data were recorded for all participants. Statistical analysis included t-test, chi-square, and logistic regression, with significance set at P<0.05. \u0000Results: The frequency of sublingual varices was 21.8%. Mean systolic blood pressure was 139.68±19.01mmHg in patients with sublingual varices and 118.09±13.78mmHg in patients without the lesions (P=0.561). Mean diastolic blood pressure was 100.45±17.81mmHg and 80.31±12.08mmHg in patients with and without sublingual varices, respectively (P<0.001). Smoking was significantly more prevalent among patients who had the lesions (P<0.05). Gender (P=0.686) and age (P=0.875) showed no significant relationship with sublingual varices, while smoking and blood pressure levels were significantly associated with these varices (P<0.001). \u0000Conclusion: It is advisable to monitor and manage blood pressure in patients with sublingual varices who may not be aware of their blood pressure status. Our results showed that smoking could be one of the predictive factors for sublingual varices.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"252 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139842592","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

The Effect of Bioglass Coating on Microshear Bond Strength of Resin Cement to Zirconia 生物玻璃涂层对树脂水泥与氧化锆微剪切粘接强度的影响

Frontiers in Dentistry Pub Date : 2024-02-12 DOI: 10.18502/fid.v21i6.14887

Hanie Nojedehian, Maryam Moezzizadeh, Nahid Abdollahi, Fatemeh Soltaninejad, Haleh Valizadeh-Haghi

{"title":"The Effect of Bioglass Coating on Microshear Bond Strength of Resin Cement to Zirconia","authors":"Hanie Nojedehian, Maryam Moezzizadeh, Nahid Abdollahi, Fatemeh Soltaninejad, Haleh Valizadeh-Haghi","doi":"10.18502/fid.v21i6.14887","DOIUrl":"https://doi.org/10.18502/fid.v21i6.14887","url":null,"abstract":"Objectives: Durable bonding to zirconia is a challenging issue in dentistry. This study aimed to assess the effect of bioglass coating of zirconia on the microshear bond strength of resin cement to zirconia and to study the effect of thermocycling on this bond. \u0000Materials and Methods: This in-vitro experimental study was conducted on 60 yttria-stabilized tetragonal zirconia blocks in six groups (N=10) based on surface pretreatment and thermocycling. Surface pretreatments included no treatment control, alumina particle abrasion, and bioglass-coating of zirconia. Resin bonding was performed with Panavia F2.0 cements. Then, half of the specimens underwent a 24-hour incubation in 37°C water, while the other half were subjected to thermocycling (12000 cycles, 5-55°C, 60s for each batch) following the same incubation period. Subsequently, the microshear bond strength of the specimens was measured. Additionally, one block from each group was subjected to scanning electron microscopy and X-ray diffraction. The data were analyzed using Kruskal-Wallis and Mann-Whitney U tests. \u0000Results: There was a significant difference between the bond strength values of different groups (P<0.001). Alumina particle abrasion and bioglass coating equally increased the bond strength compared to the untreated control group (P<0.001). Thermocycling caused significant decreases in bond strength in all the groups (P<0.001); however, the bond strength value of the thermocycled bioglass-coated group was significantly higher than that reported for the thermocycled alumina particle abraded group (P=0.015). \u0000Conclusion: Despite the decrease in the bond strength values after thermocycling, the long-term efficacy of the bioglass coating of zirconia was promising.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"28 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139843205","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

Comparison of the Antibacterial Effect of AH26, Adseal and Beta RCS Root Canal Sealers Against Enterococcus Faecalis, an in Vitro Study 体外研究：比较 AH26、Adseal 和 Beta RCS 根管封闭剂对粪肠球菌的抗菌效果

Frontiers in Dentistry Pub Date : 2024-02-04 DOI: 10.18502/fid.v21i5.14853

Sholeh Ghabraei, Hadi Assadian, Hassan Razmi, Mohammad Saeid Sheikhrezaei, S. Khedmat, Nazanin Chitsaz, Zahra Mohammadi, F Noori

{"title":"Comparison of the Antibacterial Effect of AH26, Adseal and Beta RCS Root Canal Sealers Against Enterococcus Faecalis, an in Vitro Study","authors":"Sholeh Ghabraei, Hadi Assadian, Hassan Razmi, Mohammad Saeid Sheikhrezaei, S. Khedmat, Nazanin Chitsaz, Zahra Mohammadi, F Noori","doi":"10.18502/fid.v21i5.14853","DOIUrl":"https://doi.org/10.18502/fid.v21i5.14853","url":null,"abstract":"Objectives: Antibacterial activity against endodontic pathogens is a desirable feature for root canal sealers. The objective of this study was to compare the antibacterial effect of three resin-based endodontic sealers (AH26, Adseal, and Beta RCS) against Enterococcus faecalis in vitro. \u0000Materials and Methods: The antibacterial properties of the sealers were assessed against E. faecalis using agar diffusion test (ADT) for fresh state (N=10) and direct contact test (DCT) for freshly-mixed and set states of the materials (N=10). In ADT, the diameter of the zones of inhibition was measured after 24h of contact. In DCT, the colony-forming units of the bacteria were counted after 30 minutes and 180 minutes of exposure. The results were analyzed with two-way ANOVA and independent sample t-test. P<0.05 was considered significant. \u0000Results: Regarding DCT results, all test materials indicated an antibacterial effect, both in freshly-mixed and set states. The highest antibacterial effect was related to Adseal, whereas the lowest was observed in Beta RCS. There was a significant difference between all study groups (different sealers, setting states, and contact times; P<0.001), except for freshly-mixed AH26 and Adseal at 180 minutes (P>0.05). According to ADT, AH26 and Adseal represented the widest and the smallest inhibition zones, respectively (P<0.001). \u0000Conclusion: Within the limitations of this in vitro study, AH26, Adseal, and Beta RCS showed antibacterial effects against E. faecalis in both freshly-mixed and set states. The antibacterial effect increased over time in all of the studied sealers.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139806801","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

Comparison of the Antibacterial Effect of AH26, Adseal and Beta RCS Root Canal Sealers Against Enterococcus Faecalis, an in Vitro Study 体外研究：比较 AH26、Adseal 和 Beta RCS 根管封闭剂对粪肠球菌的抗菌效果

Frontiers in Dentistry Pub Date : 2024-02-04 DOI: 10.18502/fid.v21i5.14853

Sholeh Ghabraei, Hadi Assadian, Hassan Razmi, Mohammad Saeid Sheikhrezaei, S. Khedmat, Nazanin Chitsaz, Zahra Mohammadi, F Noori

{"title":"Comparison of the Antibacterial Effect of AH26, Adseal and Beta RCS Root Canal Sealers Against Enterococcus Faecalis, an in Vitro Study","authors":"Sholeh Ghabraei, Hadi Assadian, Hassan Razmi, Mohammad Saeid Sheikhrezaei, S. Khedmat, Nazanin Chitsaz, Zahra Mohammadi, F Noori","doi":"10.18502/fid.v21i5.14853","DOIUrl":"https://doi.org/10.18502/fid.v21i5.14853","url":null,"abstract":"Objectives: Antibacterial activity against endodontic pathogens is a desirable feature for root canal sealers. The objective of this study was to compare the antibacterial effect of three resin-based endodontic sealers (AH26, Adseal, and Beta RCS) against Enterococcus faecalis in vitro. \u0000Materials and Methods: The antibacterial properties of the sealers were assessed against E. faecalis using agar diffusion test (ADT) for fresh state (N=10) and direct contact test (DCT) for freshly-mixed and set states of the materials (N=10). In ADT, the diameter of the zones of inhibition was measured after 24h of contact. In DCT, the colony-forming units of the bacteria were counted after 30 minutes and 180 minutes of exposure. The results were analyzed with two-way ANOVA and independent sample t-test. P<0.05 was considered significant. \u0000Results: Regarding DCT results, all test materials indicated an antibacterial effect, both in freshly-mixed and set states. The highest antibacterial effect was related to Adseal, whereas the lowest was observed in Beta RCS. There was a significant difference between all study groups (different sealers, setting states, and contact times; P<0.001), except for freshly-mixed AH26 and Adseal at 180 minutes (P>0.05). According to ADT, AH26 and Adseal represented the widest and the smallest inhibition zones, respectively (P<0.001). \u0000Conclusion: Within the limitations of this in vitro study, AH26, Adseal, and Beta RCS showed antibacterial effects against E. faecalis in both freshly-mixed and set states. The antibacterial effect increased over time in all of the studied sealers.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"28 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139866226","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

Background Characteristics and Cognitive Factors as Determinants of Oral Health in Pregnant Women, Tehran, Iran: A Cross-Sectional Study 决定伊朗德黑兰孕妇口腔健康的背景特征和认知因素：一项横断面研究

Frontiers in Dentistry Pub Date : 2024-01-28 DOI: 10.18502/fid.v21i4.14821

Mina Shirmohammadi, S. Mohebbi, S. Razeghi, M. Khami, A. Shamshiri, H. Bahramian

{"title":"Background Characteristics and Cognitive Factors as Determinants of Oral Health in Pregnant Women, Tehran, Iran: A Cross-Sectional Study","authors":"Mina Shirmohammadi, S. Mohebbi, S. Razeghi, M. Khami, A. Shamshiri, H. Bahramian","doi":"10.18502/fid.v21i4.14821","DOIUrl":"https://doi.org/10.18502/fid.v21i4.14821","url":null,"abstract":"Objectives: Pregnancy can lead to oral health issues, yet many women remain unaware of the potential negative impact on their pregnancy. This study aimed to assess the dental and periodontal health of pregnant women in Tehran, Iran, and identify its associated factors. Materials and Methods: A cross-sectional study was conducted with 221 pregnant women attending 12 randomly selected public health centers in Tehran, Iran. A self-administered questionnaire gathered data on background characteristics, oral health knowledge, and self-reported health. Periodontal status, oral hygiene, and dental health were assessed using bleeding on probing (BOP), simplified oral health (OHI-S), and decayed-missing-filled teeth (DMFT) indices. Statistical analysis included simple and multiple linear regression (P<0.05). Results: The participants' ages ranged from 18 to 42 years (mean: 27.9 years, SD: 5.5). On average, participants scored 4.1 out of 11 (SD: 1.7) for general oral health knowledge and 1.62 out of 4 (SD: 0.9) for knowledge about oral health during pregnancy. The mean DMFT was 8.28 (SD: 5.7), with 65.6% of women having fair oral hygiene according to the OHI-S. Participants reporting poor general health had more debris (B: 0.276, P=0.043), while those with higher general oral health knowledge had fewer missing teeth (B: -0.183, P=0.048). Conclusion: Despite partial free oral health care provided to pregnant women in Iran, the dental and periodontal conditions of the participants were unsatisfactory. Implementing motivational educational programs within the primary health care system could be instrumental in improving the oral health of pregnant mothers.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140488339","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

Restoring an Extremely Destructed Tooth with Flared Root Canal Walls: A Case Report 修复根管壁外翻的极度破坏牙：病例报告

Frontiers in Dentistry Pub Date : 2024-01-22 DOI: 10.18502/fid.v21i3.14760

Hamid Kermanshah, Taraneh Estedlal

引用次数: 0