Clinical and Experimental Dental Research最新文献

{"title":"The Use of Cyanoacrylate Tissue Adhesives in Various Wound Suturing Techniques to Enhance the Healing Process of Surgical Wounds: An Animal Study","authors":"Mojtaba Alijani,&nbsp;Shokofeh Jamshidi,&nbsp;Reza Nadripour,&nbsp;Naser Kamyari,&nbsp;Ali Heidari","doi":"10.1002/cre2.70057","DOIUrl":"https://doi.org/10.1002/cre2.70057","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>This study aimed to investigate the effect of cyanoacrylate tissue adhesive and suture techniques on closing surgical wounds in rabbits.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>This study randomly divided 32 male New Zealand white rabbits into four groups. In the first group, interrupted sutures were applied. In the second group, interrupted sutures were placed, and using a pipette, the surface of the wound was covered by tissue adhesive. In the third group, the wound was closed with a continuous suture, and in the fourth group, in addition to the continuous suture, tissue adhesive was also used. On the fifth day of surgery, rabbits were killed and tissue samples were collected and examined for epithelial tissue thickness, rate of inflammatory tissue, and area of granulation tissue.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>In general, among the four groups, the highest thickness of the formed epithelial tissue was in the continuous suture without tissue adhesive group, and the lowest of epithelial tissue was seen in the interrupted suture with tissue adhesive group. There was a tendency to reduce the intensity of inflammation in the groups that used tissue adhesive, but except in one case, no significant difference was seen in the rest of the groups. Among the studied groups, the rate of granulation tissue was less in the continuous suture with an adhesive group compared with the other groups.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The use of tissue adhesive on any type of suture technique can reduce the rate of inflammation and cause less granulation tissue. In the short term, the use of tissue adhesive could be an obstacle in the formation of epithelial tissue.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564953","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}

{"title":"Correlation of Body Mass Index With Severity of Periodontitis: A Cross-Sectional Study","authors":"Arvina Rajasekar,&nbsp;Maria Maddalena Marrapodi,&nbsp;Diana Russo,&nbsp;Hande Uzunçıbuk,&nbsp;Vincenzo Ronsivalle,&nbsp;Marco Cicciù,&nbsp;Giuseppe Minervini","doi":"10.1002/cre2.70058","DOIUrl":"https://doi.org/10.1002/cre2.70058","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>This study aimed to assess the relationship between body mass index (BMI) classification and the severity of periodontitis, recognizing that both obesity and periodontitis involve chronic inflammatory processes, which may exacerbate one another.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>A cross-sectional study was conducted on a convenience sample of 162 consecutive outpatients who reported to the Department of Periodontics, Saveetha Dental College and Hospitals in Chennai from March 2023 to September 2023. Age, gender, Russell's periodontal index, and BMI were recorded. The association between age, gender, BMI, and severity of periodontitis was analyzed using linear-by-linear <i>χ</i>² association. Ordinal logistic regression analysis was employed to assess the odds ratio (OR) of age, gender, and BMI with the severity of periodontitis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>A statistically significant association was observed between age, gender, BMI, and the severity of periodontitis (<i>p</i> &lt; 0.05). Participants aged 35-60 years had an OR of 1.305 for severe periodontitis (95% CI: 0.754–1.561). Males exhibited a higher risk of severe periodontitis (OR: 1.171; 95% CI: 0.894–2.485). Obese participants showed an OR of 1.417 for severe periodontitis compared to overweight participants (OR: 0.683; 95% CI: 0.817–1.629).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Severe periodontitis was more prevalent among obese individuals, followed by overweight individuals. Obesity may be considered a potential risk indicator for the development and progression of periodontitis.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564852","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}

{"title":"Impact of Autoclaving on the Dimensional Stability of 3D-Printed Guides for Orthodontic Mini-Implant Insertion – An In Vitro Study","authors":"Samuel David,&nbsp;Mira Hüfner,&nbsp;Nicole Rauch,&nbsp;Robert Kerberger,&nbsp;Dieter Drescher,&nbsp;Giulia Brunello,&nbsp;Kathrin Becker","doi":"10.1002/cre2.70111","DOIUrl":"https://doi.org/10.1002/cre2.70111","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>This study aimed to assess the effect of the printing process itself and steam autoclaving on the geometrical stability of 3D-printed guides for mini-implant insertion.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Material and Methods</h3>\u0000 \u0000 <p>Fifty guides (<i>n</i> = 10 per group) were printed with five printer/resin combinations (PRCs) from the same STL file using either digital light processing (DLP/EG, DLP/Next, DLP/Opti), desktop stereolithography (SLA/DSG) or liquid crystal display stereolithography printers (LCD/Amber). Half were sterilized by steam autoclaving with Cycle 1 (121°C, 1 bar, 20.5 min), half with Cycle 2 (134°C, 2 bars, 5.5 min). Before (T0) and after sterilization (T1) the guides were scanned with a structured light 3D scanner, and selected guides also with micro-CT for validation. Linear measurements were performed in three axes on STL, and on T0 and T1 scans. Linear mixed-effects models were used, followed by post-hoc tests in case of significance.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Measurements at T0 and T1 differed significantly from STL in both <i>x</i>- and <i>y</i>-axis (4 and 3 PRCs, respectively) (<i>p</i> &lt; 0.05); in <i>z</i>-axis only DLP/Next showed significant differences between T0 and STL (<i>p</i> &lt; 0.001). The comparison between T0 and T1 revealed significant differences in <i>x</i>-axis for DLP/Next and DLP/Opti after Cycle 1 and Cycle 2, respectively (<i>p</i> &lt; 0.05), while in the <i>y</i>-axis no intra-group difference was recorded. In the <i>z</i>-axis all PRCs except for SLA/DSG exhibited significant shrinkage (for Cycles 1 or 2). Differences between the two cycles at T1 were registered only in <i>z</i>-axis (DLP/Next and LCD/Amber).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Compared with the original, all PRCs except for SLA/DSG presented significant changes in their dimensional stability owing to the printing process itself and/or the sterilization. If these changes are of clinical significance, they remain to be verified.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Clinical Relevance</h3>\u0000 \u0000 <p>With the utilized design, the guides fabricated with SLA provided lower dimensional changes as compared to the ones produced by the other printing techniques.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70111","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564952","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}

{"title":"Risk Factors for Nonsyndromic Orofacial Clefts Among Saudi Children","authors":"Najla S. Alrejaye,&nbsp;Mostafa A. Abolfotouh,&nbsp;Fathima Fazrina Farook,&nbsp;Elaf Mubarak Abdullah Algharbi,&nbsp;Abdulmajeed Mohammed B. Alharbi,&nbsp;Halah Ibrahim Alshuaibi,&nbsp;Mai Saad Bin Akresh,&nbsp;AlAnood Naif Bin Saedan,&nbsp;Nouf Besher Albesher,&nbsp;Atheer Sami Aldaham,&nbsp;Lujain Ahmad Alghrairy,&nbsp;Latifa Yousef AlGudaibi,&nbsp;Rana Abdullah Alolaiq,&nbsp;Afnan Turki Alzomaili,&nbsp;Mosleh S. Alharbi","doi":"10.1002/cre2.70108","DOIUrl":"https://doi.org/10.1002/cre2.70108","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>The aim of this study was to identify the risk factors associated with nonsyndromic orofacial clefts (NSOFCs) among Saudi children.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>A case–control study was carried out at the Ministry of National Guard Health Affairs. Cases were children with NSOFCs who were matched by gender and year of birth to healthy controls from the same setting. Data on risk factors were collected by interviewing parents of both cases and controls using a validated questionnaire. The questionnaire consisted of the father's and mother's information and the child's information. The level of significance was set at 0.05. Odds ratio (OR) and 95% confidence intervals (CIs) were used to determine the associated risk factors with NSOFCs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>A total of 188 children were included (88 cases and 100 controls), with a mean age of 5.1 ± 2.3 years. Maternal fever during pregnancy was associated with a significantly higher risk of NSOFCs (OR = 3.4, 95% CI: 0.05–2.5, <i>p</i> &lt; 0.05). Additionally, the presence of maternal relatives with orofacial clefts increased the risk (OR = 6.02, 95% CI: 0.43–3.16, <i>p</i> &lt; 0.001), whereas the strongest predictor was paternal relatives with orofacial clefts (OR = 8.00, 95% CI: 0.41–3.75, <i>p</i> = 0.014). These findings are of utmost importance for the understanding and potential prevention of NSOFCs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The presence of paternal or maternal relatives with orofacial clefts and maternal fever during the first trimester were predictors for NSOFCs, with having affected paternal relatives being the strongest predictor.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70108","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564604","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}

{"title":"Assessing the Long-Term Survival of Dental Implants in A Retrospective Analysis: Immediate Versus Delayed Placement","authors":"Georgios S. Chatzopoulos,&nbsp;Larry F. Wolff","doi":"10.1002/cre2.70096","DOIUrl":"https://doi.org/10.1002/cre2.70096","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>This large-scale retrospective study aims to evaluate and compare the long-term survival rates of dental implants placed immediately after tooth extraction (type 1) versus those placed at a later stage (types 2, 3, and 4). Additionally, it examines how patient characteristics and implant site conditions influence the choice of implant placement.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>This study retrospectively analyzed patient data from 10 university dental clinics between 2011 and 2022 and examined dental implant treatment outcomes. Patient information, including age, sex, ethnicity, race, smoking, and medical status, was analyzed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Records of 20,842 patients with 50,333 dental implants inserted between 2011 and 2022 were analyzed. The multivariate analysis resulted in significant differences for age, ethnicity, race, gender, and asthma. A 98.4% survival rate for dental implants placed immediately following extraction and a 98.6% survival rate for those placed in fully healed sockets were recorded. The type of implant placement (immediate vs. delayed) showed no significant effect on implant outcome.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Immediate implant placement resulted in high survival rates with delayed implants inserted into healed sites. Both immediate and delayed implant placements are viable therapeutic approaches demonstrating predictable outcomes.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564834","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}

{"title":"Exploring Augmented Reality for Dental Implant Surgery: Feasibility of Using Smartphones as Navigation Tools","authors":"Richard Mosch,&nbsp;Vasilios Alevizakos,&nbsp;Dragan Alexander Ströbele,&nbsp;Marcus Schiller,&nbsp;Constantin von See","doi":"10.1002/cre2.70110","DOIUrl":"https://doi.org/10.1002/cre2.70110","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>Dental implant placement requires exceptional precision to ensure functional and esthetic success. Traditional guidance methods, such as static drilling guides and dynamic navigation systems, have improved accuracy but are limited by high costs, rigidity, and reliance on specialized hardware. This study introduces an augmented reality (AR) system using consumer smartphones for real-time navigation in dental implant placement. The system aims to provide a cost-effective, eco-friendly alternative to conventional methods by integrating virtual planning with physical models.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Material and Methods</h3>\u0000 \u0000 <p>A modified dental training model with removable parallel pins served as the physical component. Implant positions were digitally planned and color-coded using 3D scanning and modeling software, then integrated into an AR application built with Unity Engine. A smartphone's camera was calibrated to project virtual overlays onto the physical model. In vitro testing evaluated alignment accuracy, drill guidance, and system performance under controlled lighting conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The AR system successfully aligned virtual overlays with the physical model, providing effective visual guidance for implant drill positioning. Operators maintained planned trajectories, demonstrating the feasibility of AR as an alternative to static and dynamic guidance systems. Challenges included the system's sensitivity to stable lighting and visual cues.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This AR-based approach offers an accessible and sustainable solution for modern dental implantology. Future research will focus on quantitative accuracy assessments, AI integration for enhanced performance, and clinical trials to validate real-world applicability. AR technology has the potential to transform dental practices by improving outcomes while reducing costs and environmental impact.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554730","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}

{"title":"Dental Deposits Are Differentially Associated With Periodontal Conditions and the Number of Teeth in Japanese Community-Dwelling Individuals: The Nagasaki Islands Study","authors":"Masayuki Oohira,&nbsp;Masayasu Kitamura,&nbsp;Kanako Higuchi,&nbsp;Mark Luigi Fabian Capati,&nbsp;Mami Tamai,&nbsp;Saki Ichinose,&nbsp;Yasunori Yamashita,&nbsp;Yukio Ozaki,&nbsp;Eijiro Sakamoto,&nbsp;Yumiko Kawashita,&nbsp;Sakiko Soutome,&nbsp;Takahiro Maeda,&nbsp;Atsushi Kawakami,&nbsp;Toshiyuki Saito,&nbsp;Atsutoshi Yoshimura","doi":"10.1002/cre2.70101","DOIUrl":"https://doi.org/10.1002/cre2.70101","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>This study aimed to determine how dental deposits are associated with periodontal conditions and the number of teeth in Goto Islands' residents.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Previous studies have shown that dental deposits increase the risk of developing periodontal diseases. However, the relationships between dental deposits and the periodontal/dentitional conditions in a super-aging society remain unclear.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>A cross-sectional study involving 671 participants (age: 65.0 ± 12.0 years) was conducted using data from the Nagasaki Islands Study (NaIS). Participants underwent a routine medical examination. Information on oral hygiene and smoking status was collected from a self-administered questionnaire. Dental examinations were conducted to determine the number of teeth, probing pocket depth (PPD), clinical attachment level (CAL), bleeding on probing (BOP) ratio, calculus index (CI) score, and debris index (DI) score. Saliva samples were collected from the participants to determine the levels of <i>Porphyromonas gingivalis</i> and <i>Aggregatibacter actinomycetemcomitans</i> by real-time polymerase chain reaction. Multivariable logistic regression analyses were performed to evaluate the relationships between dental deposits and periodontal/dentitional conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Multivariable logistic regression analyses show that greater DI score was significantly associated with higher BOP ratio (OR = 2.51, 95% CI: 1.75–3.61), greater CAL (OR = 1.51, 95% CI: 1.02–2.23), and fewer teeth (OR = 1.70, 95% CI: 1.04–2.76). Greater CI score was significantly associated with a higher BOP ratio (OR = 2.18, 95% CI: 1.47–3.23), deeper PPD (OR = 2.04, 95% CI: 1.22–3.50), and more teeth (OR = 0.13, 95% CI: 0.08–0.23).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Debris and calculus deposition were associated with more severe periodontal conditions, but calculus deposition was strongly associated with more teeth. The association between calculus deposition and more teeth may be an emerging trend in super-aging societies, and future longitudinal studies are warranted to elucidate the changing relationship between calculus and number of teeth.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535967","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}

{"title":"Investigating the Ability to Mask Dental Discoloration by CAD/CAM Bleach Shade Ceramics in Different Thicknesses","authors":"Shervin Reybod,&nbsp;Fariba Ezoji,&nbsp;Ghazaleh Ahmadizenouz,&nbsp;Behnaz Esmaeili","doi":"10.1002/cre2.70102","DOIUrl":"https://doi.org/10.1002/cre2.70102","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>The initial color of a ceramic restoration is determined by the background color. Dental ceramics are great at masking a variety of stains, which helps achieve a natural and beautiful smile. A recent study delved into the effectiveness of CAD/CAM bleach shade ceramics of varying thicknesses in concealing dental discoloration.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Material and Methods</h3>\u0000 \u0000 <p>In this laboratory research, ceramic samples including feldspathic ceramics, lithium silicate ceramics, and zirconia ceramics of varying thicknesses were used. Each type of ceramic had a thickness of 0.5, 1.0, 1.5, and 2.0 mm, with dimensions of 7 × 7 mm (<i>n</i> = 10). Backgrounds of C4 and A2 color porcelain were used. To evaluate color coverage, ceramic pieces were placed on the C4 and A2 porcelain backgrounds, and the Vita spectrophotometer was used to calculate the <i>L</i>*<i>a</i>*<i>b</i>* parameters and color difference (ΔE00). A ΔE00 value of ≤ 1.8 was considered clinically acceptable. The data was analyzed using two-way and one-way analysis of variance tests, and pairwise comparisons of groups were performed using Tukey's test.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The research revealed that both the thickness and type of ceramic material significantly influenced the color changes of the samples, with their interaction also playing a crucial role (all three: <i>p</i> &lt; 0.001). Zirconia demonstrated superior color masking performance on the C4 substrate at 0.5 and 1.0 mm thicknesses. The masking ability of ceramics varied at 0.5, 1.0, and 1.5 mm but notably improved at a thickness of 2.0 mm.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Zirconia generally demonstrated superior masking ability across all thicknesses, while other ceramics exhibited commendable performance only at 1.5 and 2.0 mm thicknesses. Nevertheless, augmenting the thickness of ceramic restorations amplified their masking capability.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530473","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}

{"title":"Lateral Approach for Regenerative Treatment of Intrabony Defects Associated With an Edentulous Alveolar Ridge: A Prospective Case Series","authors":"Filip Hromčík,&nbsp;Adéla Halusková,&nbsp;Lydie Izakovičová Hollá","doi":"10.1002/cre2.70094","DOIUrl":"https://doi.org/10.1002/cre2.70094","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objectives</h3>\u0000 \u0000 <p>This case series evaluated the clinical efficacy of the novel “lateral approach” combined with an enamel matrix derivative (EMD) and bone grafting in the regenerative surgical treatment of intrabony defects associated with an edentulous ridge.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Material and Methods</h3>\u0000 \u0000 <p>The innovative flap, called the “lateral approach,” is explicitly designed for regeneration of unchallenged isolated intrabony defects associated with <i>edentulous</i> alveolar ridges. The flap is defined by a curved vertical incision on the buccal side opposite the treated defect and a sulcular incision on the buccal and defect-associated sides, promoting uneventful healing and regeneration while minimizing complications.</p>\u0000 \u0000 <p>Seven intrabony defects (one per patient) distal to the lower second molar were treated using the “lateral approach” combined with EMD and grafting with deproteinized bovine bone mineral. The primary outcome was clinical attachment level (CAL) change. As additional parameters, pocket probing depth (PPD) reduction and complication rate were analyzed. All the outcomes were assessed 6 months post-surgery and compared with the baseline values.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Primary wound healing occurred in 100% of cases, and no complications were reported. At the 6-month re-evaluation, the initial median CAL of 6 mm (interquartile range 5–8 mm) was reduced to 3 mm (3–5 mm). The corresponding median PPD was reduced from 6 mm (IQR 6–8 mm) to 4 mm (IQR 3–5 mm). These differences were statistically significant (<i>p</i> &lt; 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The “lateral approach” is a technique for the surgical treatment of intrabony defects associated with the edentulous ridge. Within the limitations of the study, this method seems to be suitable for distal intrabony defects in the lower second molars, which frequently develop after third molar extraction.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530052","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}

{"title":"Evaluation of the Effect of Distance Between Dental Abutments on the Accuracy of One-Step and Two-Step Impression Techniques With Polyvinyl Siloxane (PVS) Material","authors":"Seyyed Ahmad Ghoraishian,&nbsp;Mohsen Khataminia,&nbsp;Zahra Shahramian,&nbsp;Maryam Zare,&nbsp;Mina Mohaghegh","doi":"10.1002/cre2.70100","DOIUrl":"https://doi.org/10.1002/cre2.70100","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>The aim of this study was to evaluate the effect of distance between dental abutments on the accuracy of one-step and two-step impression techniques with polyvinyl siloxane (PVS) material.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Four master models were fabricated with different interabutment distances equal to one, two, three, and four premolar lengths 1–4 (L1, L2, L3, and L4). Seven one-step impressions were taken from each master model using PVS impression material (Group A, <i>n</i> = 7). For two-step impressions, a 1.5 mm polyethylene spacer was used over each master model, and impressions were taken (Group B, <i>n</i> = 7). Scans from the casts were superimposed over the master model scans. Accordingly, differences were measured and compared with statistical tests (Kolmogorov–Smirnoff test, Mann–Whitney test, and Friedman's test) to evaluate the effect of interabutment distance within each impression technique group and also compare the one-step and two-step impression techniques. <i>p</i> value &lt; 0.05 was considered statistically significant.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>A statistically significant difference was noted among the different edentulous areas in the one-step impression technique group (Group A, <i>p</i> = 0.010). At edentulous span, a statistically significant difference was recorded (<i>p</i> = 0.047) with two-step impression technique being more accurate compared to the one-step impression technique. Friedman's pairwise analysis in Group A demonstrated a significance between one premolar and four premolar interabutment distance groups (<i>p</i> = 0.006).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The accuracy of the one-step impression is significantly affected by the increase in interabutment distance from one premolar to four premolar edentulous.</p>\u0000 </section>\u0000 </div>","PeriodicalId":10203,"journal":{"name":"Clinical and Experimental Dental Research","volume":"11 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cre2.70100","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143530053","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}