Journal of Dental Research, Dental Clinics, Dental Prospects最新文献_第4页

In vitro evaluation of some mechanical properties and fluoride release of glass-ionomer cement modified with seashell nanoparticles. 用贝壳纳米颗粒改性的玻璃离子水泥的一些机械性能和氟化物释放量的体外评估。

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-09-07 DOI: 10.34172/joddd.41084

Ahmed S Albasso, Reem R Ali, Abeer A Yahya

{"title":"In vitro evaluation of some mechanical properties and fluoride release of glass-ionomer cement modified with seashell nanoparticles.","authors":"Ahmed S Albasso, Reem R Ali, Abeer A Yahya","doi":"10.34172/joddd.41084","DOIUrl":"10.34172/joddd.41084","url":null,"abstract":"Background: This research assessed the compressive strength and microhardness of glass-ionomer cement (GIC) after incorporating seashell nanoparticles and evaluated the inert fluoride-releasing ability.Methods: Seashell nanoparticles were synthesized by a mechanical grinding protocol. These particles were characterized by transmission electron microscopy and energy dispersive x-ray and added to the glass-ionomer powder in a weight-to-weight ratio. Seventy-five study samples were distributed into eight samples for each study group (control, 5%, and 10% seashell) to have 24 samples for each test of the study (compressive strength, microhardness, and fluoride release). One sample per group was prepared for the Fourier transform infrared spectroscopy (FTIR) test. The fluoride ion release was measured after one and four weeks of incubation period at 37 ºC, while other tests were conducted after 24 hours of incubation.Results: In all the test variables, the 10% seashell group showed the highest significant mean, followed by the 5% seashell and the control group. However, there was no significant difference between the 5% and 10% seashell groups in the first week of fluoride release.Conclusion: According to the results, 10% seashell nanoparticles were the best to improve the mechanical properties of GIC and boost the fluoride-releasing potential.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 3","pages":"165-171"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11459085/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative evaluation of the effectiveness of concentrated growth factor alone and in combination with diode laser application in the treatment of intrabony periodontal defects: A clinical and radiographic split-mouth study. 单独使用浓缩生长因子和结合使用二极管激光治疗骨内牙周缺损的效果比较评估：临床和放射学分口研究。

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-06-24 DOI: 10.34172/joddd.40781

Kalaiselvan Dharani, Jaishree Tukaram Kshirsagar, Priyangha Thangavel

{"title":"Comparative evaluation of the effectiveness of concentrated growth factor alone and in combination with diode laser application in the treatment of intrabony periodontal defects: A clinical and radiographic split-mouth study.","authors":"Kalaiselvan Dharani, Jaishree Tukaram Kshirsagar, Priyangha Thangavel","doi":"10.34172/joddd.40781","DOIUrl":"10.34172/joddd.40781","url":null,"abstract":"Background: Applying autologous growth factors and diode laser in periodontal therapy enhances fibroblast-mediated new attachment and osteoblastic differentiation. Hence, this study compared and evaluated the effectiveness of concentrated growth factor (CGF) alone and with diode laser application in managing intrabony periodontal defects.Methods: Ten patients with stage III periodontitis were included in this study. All the patients underwent an open flap debridement (OFD) procedure followed by CGF membrane placement in the intrabony defect in site A, whereas, in site B, after OFD, all the patients underwent diode laser irradiation before CGF membrane placement. Plaque and gingival bleeding index (PI & GBI), PPD, and clinical attachment level (CAL) were evaluated at baseline and 3 and 6 months later. Bone fill (BF), BF%, bone crest changes (BCC), and BCC% were assessed radiographically at six months postoperatively.Results: Significant reductions in PI and GBI scores, probing pocket depth (PPD), and CAL gain were observed at both sites 3 and 6 months from baseline. A significant reduction in PPD and CAL gain was noted between sites, which were higher in site B than in site A with a mean difference of 0.70±0.05 mm and 1.30±0.18 mm, 0.90±1.89 mm at 3 and 6 months, respectively. Radiographic measurement showed better BF, BF%, BCC, and BCC% at both sites at six months, which were higher at site B than at site A but statistically insignificant.Conclusion: The combination of CGF and diode laser application has demonstrated successful and promising results in terms of regeneration, improving the clinical and radiographic parameters.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 2","pages":"143-151"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11282198/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of probiotics on pain and ulceration in patients undergoing fixed orthodontic treatment. 益生菌对固定牙齿矫正患者疼痛和溃疡的影响

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-06-24 DOI: 10.34172/joddd.41128

Tannaz Abdollahzadeh Baghaei, Katayoun Katebi, Mahsa Jafari Tayebpour, Mohsen Hashemi

{"title":"Effect of probiotics on pain and ulceration in patients undergoing fixed orthodontic treatment.","authors":"Tannaz Abdollahzadeh Baghaei, Katayoun Katebi, Mahsa Jafari Tayebpour, Mohsen Hashemi","doi":"10.34172/joddd.41128","DOIUrl":"10.34172/joddd.41128","url":null,"abstract":"Background: Ulcers caused by mucosal irritation of fixed orthodontic appliances remain an unsolved problem, and more research is needed to improve the pain caused by orthodontic appliances to provide more comfortable treatment for these patients. This study investigated the effect of probiotic Lactogum on pain and ulceration in patients undergoing fixed orthodontic treatment.Methods: In this study, 64 patients over 12 years of age and candidates for fixed orthotic treatment were divided into case and control groups (n=32). The control group received orthodontic waxes, and the case group received the same orthodontic waxes and \"Lactogum\" probiotic lozenges from the beginning of the treatment. The number of ulcers, the amount of pain, and the location of the ulcer were recorded and compared between the two groups. An independent-sample t-test was used to compare the pain level and number of ulcers between the two groups. A significance level of 0.05 was considered for all tests. SPSS 17 was used for data analysis.Results: The mean number of ulcers in the case group was significantly lower than the control group (P<0.001). The mean pain in the case group was significantly lower than in the control group (P<0.001). The most frequent location of ulcers was the buccal mucosa, followed by the labial mucosa.Conclusion: Lactogum probiotic lozenges can reduce traumatic oral ulcers and pain levels in patients undergoing fixed orthodontic treatment. However, larger clinical trials are encouraged to confirm these findings.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 2","pages":"152-156"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11282199/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of cervical vertebral maturation using machine learning in lateral cephalograms.

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-12-14 DOI: 10.34172/joddd.41114

Shahab Kavousinejad, Asghar Ebadifar, Azita Tehranchi, Farzan Zakermashhadi, Kazem Dalaie

{"title":"Determination of cervical vertebral maturation using machine learning in lateral cephalograms.","authors":"Shahab Kavousinejad, Asghar Ebadifar, Azita Tehranchi, Farzan Zakermashhadi, Kazem Dalaie","doi":"10.34172/joddd.41114","DOIUrl":"10.34172/joddd.41114","url":null,"abstract":"Background: The accurate timing of growth modification treatments is crucial for optimal results in orthodontics. However, traditional methods for assessing growth status, such as hand-wrist radiographs and subjective interpretation of lateral cephalograms, have limitations. This study aimed to develop a semi-automated approach using machine learning based on cervical vertebral dimensions (CVD) for determining skeletal maturation status.Methods: A dataset comprising 980 lateral cephalograms was collected from the Department of Orthodontics, Shahid Beheshti Dental School in Tehran, Iran. Eight landmarks representing the corners of the third and fourth cervical vertebrae were selected. A ratio-based approach was employed to compute the values of C3 and C4, accompanied by the implementation of an auto_error_reduction (AER) function to enhance the accuracy of landmark selection. Linear distances and ratios were measured using the dedicated software. A novel data augmentation technique was applied to expand the dataset. Subsequently, a stacking model was developed, trained on the augmented dataset, and evaluated using a separate test set of 196 cephalograms.Results: The proposed model achieved an accuracy of 99.49% and demonstrated a loss of 0.003 on the test set.Conclusion: By employing feature engineering, simplified landmark selection, AER function, data augmentation, and eliminating gender and age features, a model was developed for accurate assessment of skeletal maturation for clinical applications.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 4","pages":"232-241"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786010/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of postoperative 660-nm low-level laser therapy on the radiographic crestal bone loss of fresh-socket dental implants. 术后 660 纳米低强度激光治疗对新鲜牙槽骨种植体放射学骨嵴骨质流失的影响。

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-09-07 DOI: 10.34172/joddd.29923

Alireza Sighari Deljavan, Hasan Momeni, Amirmansour Shirani

{"title":"Effect of postoperative 660-nm low-level laser therapy on the radiographic crestal bone loss of fresh-socket dental implants.","authors":"Alireza Sighari Deljavan, Hasan Momeni, Amirmansour Shirani","doi":"10.34172/joddd.29923","DOIUrl":"10.34172/joddd.29923","url":null,"abstract":"Background: Although the benefits of low-level laser therapy (LLLT) in soft tissue healing have been demonstrated, the effects of laser on bone have remained controversial. This study investigated the impact of postoperative 660-nm LLLT on the radiographic crestal bone loss of fresh-socket dental implants.Methods: Thirty patients referred to the Department of Oral and Maxillofacial Surgery for tooth extraction and placement of fresh-socket implants were selected and assigned to two groups: laser (intervention) and no-laser (control) groups. Immediately after tooth extraction, the implant was inserted into the tooth socket. 660-nm LLLT was immediately started after surgery and was repeated three times per week for two weeks. Bone quantification at the implant site was assessed using periapical intraoral radiographs and computerized software immediately after surgery and after six months.Results: This study showed a statistically significant difference in mean bone resorption between the mesial and distal aspects of the two groups, with lower bone resorption in the laser group compared to the no-laser group.Conclusion: The results of this study suggest that LLLT can effectively reduce bone resorption in fresh-socket implant placement. This might indicate the positive effect of LLLT on bone resorption reduction.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 3","pages":"210-218"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11459084/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Expression of IL-1β, IL-6, TNF-α, and a-MMP-8 in sites with healthy conditions and with periodontal and peri-implant diseases: A case-control study. IL-1β、IL-6、TNF-α 和 a-MMP-8 在健康和牙周及种植体周围疾病部位的表达：病例对照研究

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-06-24 DOI: 10.34172/joddd.40958

Renzo Guarnieri, Rodolfo Reda, Dario Di Nardo, Gabriele Miccoli, Francesco Pagnoni, Alessio Zanza, Luca Testarelli

{"title":"Expression of IL-1β, IL-6, TNF-α, and a-MMP-8 in sites with healthy conditions and with periodontal and peri-implant diseases: A case-control study.","authors":"Renzo Guarnieri, Rodolfo Reda, Dario Di Nardo, Gabriele Miccoli, Francesco Pagnoni, Alessio Zanza, Luca Testarelli","doi":"10.34172/joddd.40958","DOIUrl":"10.34172/joddd.40958","url":null,"abstract":"Background: This study evaluated the gingival crevicular fluid (GCF) and Peri- implant crevicular fluid (PICF) concentrations of interleukin-1 beta (IL-1β), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α) and active metalloproteinase-8 (a-MMP-8) in sites with healthy conditions vs. sites affected by periodontitis (PER) and peri-implantitis (PIM).Methods: Periodontally healthy (PH) sites with PER, sites with peri-implant health (PIH), and sites with PIM were investigated intra-individually, according to the inclusion criteria of each group. Probing pocket depth (PPD), plaque index, gingival index, and the presence or absence of bleeding on probing (BoP) were evaluated. In GCF and PICF samples, IL-1β, IL-6, and TNF-α were quantified by ELISA Duoset® kit in combination with Ultramark® micro-ELISA digital reader; a-MMP8 concentration was analyzed by a chairside test (Perio/ImplantSafe®) in combination with a digital reader (ORALyzer®).Results: The concentrations of IL-6 and IL-1β, TNF-α, and a-MMP-8 were significantly higher in the PIM and PER sites compared to healthy sites (P<0.05). Significantly higher concentrations of IL-1β and a-MMP-8 were found in PIM vs. PER sites (P<0.05), while the concentrations of IL-6 and TNF-α did not differ between the PIM and PER groups (P>0.05).Conclusion: aMMP-8, IL-6, IL-1β, and TNF-α presented higher GCF/PICF concentrations in diseased periodontal and peri-implant sites. However, only the concentrations of IL-1β and a-MMP-8 were significantly higher in PIM than in PER sites.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 2","pages":"135-142"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11282203/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative assessment of external apical root resorption between subjects treated with clear aligners and fixed orthodontic appliances: A systematic review and meta-analysis. 使用透明矫治器和固定矫治器治疗的受试者根尖外吸收的比较评估：系统回顾和荟萃分析。

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-06-24 DOI: 10.34172/joddd.40932

Swati Singh, Ravindra Kumar Jain, Arthi Balasubramaniam

{"title":"Comparative assessment of external apical root resorption between subjects treated with clear aligners and fixed orthodontic appliances: A systematic review and meta-analysis.","authors":"Swati Singh, Ravindra Kumar Jain, Arthi Balasubramaniam","doi":"10.34172/joddd.40932","DOIUrl":"10.34172/joddd.40932","url":null,"abstract":"This review aims to collate and analyze the existing evidence on the comparison of external apical root resorption (EARR) in subjects treated with clear aligners (CAs) and fixed appliances (FA). An electronic search was conducted in six databases for articles published in all languages until July 2023. Studies that evaluated EARR in subjects treated with CAs and FAs were included. The RoB 2 tool for RCTs and the ROBINS-I tool for non-randomized studies were used to analyze the risk of bias (ROB). A random effects meta-analysis was performed to assess EARR extent in maxillary and mandibular anterior teeth for subjects treated with CAs and FAs. Ten studies (eight retrospective, one RCT, and one CCT) were included in this review, out of which six studies reported a moderate ROB, one reported a serious ROB, and three reported a low ROB on qualitative analysis. The quantitative analysis of six studies revealed a significant intergroup difference (P<0.05) in the mean EARR for maxillary central (SMD=-0.62, P<0.00001) and lateral incisors (SMD=-0.47, P=0.01) with a moderate heterogeneity (I2=56%), as well as the mandibular central incisors (SMD=-0.27, P=0.04) with high heterogeneity (I2=79%). EARR was lower in subjects treated with CAs than FAs. A moderate quality of the available evidence suggests that EARR was less evident in subjects treated with CAs when compared with FAs.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 2","pages":"85-94"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11282194/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of ethylenediaminetetraacetic acid, citric acid, and etidronic acid on root dentin mineral content and bond strength of a bioceramic-based sealer: A scanning electron microscopy-energy dispersive spectroscopy study. 乙二胺四乙酸、柠檬酸和依替膦酸对根部牙本质矿物质含量和生物陶瓷封闭剂粘接强度的影响：扫描电子显微镜-能量色散光谱研究。

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-03-29 DOI: 10.34172/joddd.40798

Ahmet Taşan, Esin Özlek

{"title":"Effects of ethylenediaminetetraacetic acid, citric acid, and etidronic acid on root dentin mineral content and bond strength of a bioceramic-based sealer: A scanning electron microscopy-energy dispersive spectroscopy study.","authors":"Ahmet Taşan, Esin Özlek","doi":"10.34172/joddd.40798","DOIUrl":"10.34172/joddd.40798","url":null,"abstract":"Background: This study assessed the impact of chelating agents, 17% ethylenediaminetetraacetic acid (EDTA), 10% citric acid (CA), and 18% etidronic acid (HEDP), on root dentin mineral content. Scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) was applied to analyze changes, and the push-out bond strength test was used to measure dentin adhesion of Well-Root ST, a bioceramic root canal sealer.Methods: A total of 80 extracted single-rooted lower premolar teeth were included in this study and randomly divided into four groups (n=20): group 1 (17% EDTA), group 2 (10% CA), group 3 (18% HEDP), and group 4 (distilled water, control). After irrigation and drying, SEM-EDS was applied to analyze eight samples from each group at coronal, middle, and apical root regions for mineral content and SEM images. The remaining 12 samples underwent a push-out bond strength test using Well-Root ST sealer and gutta-percha. Kruskal-Wallis and Dunn's tests were used for statistical analyses.Results: Statistically significant differences were found between groups (P<0.05). SEM-EDS showed significant differences in C, O, Ca, P, and Ca/P content, with no significant differences in Na and Mg. Push-out bond strength was significantly higher in the 17% EDTA, 10% CA, and 18% HEDP groups compared to the control group, with no significant differences between chelating agents.Conclusion: Chelating agents altered root dentin mineral content and improved the adhesive properties of the bioceramic sealer. These findings highlight the importance of considering the selection and use of chelating agents in the clinical practice for root canal treatment.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 1","pages":"37-43"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11179143/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141331050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Maternal periodontitis as a risk factor for preterm birth: A cross-sectional study. 作为早产风险因素的产妇牙周炎：一项横断面研究。

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-03-29 DOI: 10.34172/joddd.40860

Syed Imran Gilani, Aiman Niaz, Saira Afridi

{"title":"Maternal periodontitis as a risk factor for preterm birth: A cross-sectional study.","authors":"Syed Imran Gilani, Aiman Niaz, Saira Afridi","doi":"10.34172/joddd.40860","DOIUrl":"10.34172/joddd.40860","url":null,"abstract":"Background: Preterm birth is a heterogeneous condition with multiple underlying causes, and periodontal diseases are one of them. Approximately 900000 preterm births are reported in Pakistan each year. Oral infections such as periodontitis during pregnancy are associated with adverse pregnancy outcomes such as low birth weight and preterm births. However, different studies have reported contradictory findings. We conducted a cross-sectional study to assess the association of preterm birth with oral infection in pregnancy.Methods: We conducted a cross-sectional analytical study on 400 postpartum pregnant women in Khyber Teaching Hospital, Peshawar. Only women within the age bracket of 18‒40 years were recruited. Data were collected by an interview-based structured questionnaire. The extent and severity index were used to assess the periodontal health of participants. Frequency tables were generated, and the chi-squared test was used to determine associations between different categorical variables.Results: The mean age of the participants was 25.8±4.9 years. Approximately 87.5% of the women had generalized periodontitis. Approximately 68% of mothers had moderate severity of periodontitis. The extent index showed no notable difference between the preterm and full-term birth groups. In contrast, the severity index displayed a statistically significant difference between the preterm and full-term birth groups.Conclusion: The majority of women had generalized periodontitis. The severity index demonstrated a significant association between maternal periodontitis and preterm births. There was no association between the age of mothers and preterm births. Complications in pregnancy were not associated with preterm births.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 1","pages":"72-76"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11179145/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141331054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Colorimetric changes of zirconia-reinforced lithium disilicate with varied thicknesses under UV aging conditions.

Journal of Dental Research, Dental Clinics, Dental Prospects Pub Date : 2024-01-01 Epub Date: 2024-12-14 DOI: 10.34172/joddd.41390

AbdelRahman Moammad Abdelhameed, Hussein Ramadam Mohammed, Ahmad Mohammad Yousri El Kouedi

{"title":"Colorimetric changes of zirconia-reinforced lithium disilicate with varied thicknesses under UV aging conditions.","authors":"AbdelRahman Moammad Abdelhameed, Hussein Ramadam Mohammed, Ahmad Mohammad Yousri El Kouedi","doi":"10.34172/joddd.41390","DOIUrl":"10.34172/joddd.41390","url":null,"abstract":"Background: Zirconia-reinforced lithium disilicate (ZLD) is a promising material for esthetic dental restorations due to its strength, translucency, and color stability. However, its durability under accelerated aging conditions needs further investigation. The present in vitro study evaluated the effect of UV accelerated aging on the translucency and color stability of ZLD at varying thicknesses, using IPS e.max Press (LD) as a reference.Methods: Seventy-two samples were divided into two groups: high translucent (HT) Vita Ambria (ZLD) and IPS e.max Press (LD) (n=36, each). Each group was further subdivided into four thicknesses: 0.5, 1.0, 1.5, and 2.0 mm (n=9). The samples were fabricated, polished, and subjected to UV weathering for 384 hours, simulating one year of clinical service. Translucency and color changes were assessed using a spectrophotometer. Data were analyzed using SPSS 20, with independent t-test, paired t-test, and one-way ANOVA at a significance level of P≤0.05.Results: Vita Ambria exhibited significantly higher translucency before and after aging compared to IPS e.max press at all thicknesses (P=0.000). In both materials, translucency decreased when the thickness increased (P=0.000), observed before and after UV aging. Vita Ambria also displayed a greater color change (ΔE=2000) compared to IPS e.max press across all thicknesses (P=0.000).Conclusion: ZLD exhibited higher translucency than LD before and after accelerated artificial aging, indicating that the accelerated aging process adversely impacted the optical properties of the tested material. However, LD demonstrated superior color stability.","PeriodicalId":15599,"journal":{"name":"Journal of Dental Research, Dental Clinics, Dental Prospects","volume":"18 4","pages":"264-271"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11786005/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0