Journal of Contemporary Dental Practice最新文献

{"title":"The Association between Body Posture and Malocclusion in Adolescents: A Cross-sectional Study.","authors":"Patricia G Morales-Atarama, Luis E Arriola-Guillén","doi":"10.5005/jp-journals-10024-3807","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3807","url":null,"abstract":"<p><strong>Aim: </strong>The purpose of this study was to determine the association between body posture and dental malocclusion in adolescents.</p><p><strong>Materials and methods: </strong>This descriptive cross-sectional study evaluated the relationship between malocclusion and body posture in 37 adolescents aged 10-14 who met the selection criteria. A trained and calibrated evaluator assessed malocclusion using Angle's classification and evaluated the severity with the dental esthetic index (DAI). Frontal and lateral body postures were reviewed by a licensed medical technology specialist in physical therapy and rehabilitation using a plumb line, with postures classified as correct or incorrect. Data analysis utilized Chi-square tests and binary logistic regressions (<i>p</i> < 0.05).</p><p><strong>Results: </strong>No association was found between Angle malocclusion and body posture (<i>p</i> = 0.277). However, an association was identified when considering severity, with incorrect frontal posture observed in 77.8% of adolescents with defined malocclusion and 71.4% in those with severe malocclusion (<i>p</i> = 0.035). When malocclusion was regrouped into 2 categories (normal occlusion and malocclusion), a significant association with frontal posture was found (<i>p</i> = 0.035). Logistic regression showed that individuals with defined malocclusion are 9.09-fold more likely to develop improper frontal posture (<i>p</i> = 0.048). Furthermore, when severity was categorized into 2 groups, individuals with malocclusion were found to have a 7.29-fold higher risk of developing incorrect frontal body posture in the position.</p><p><strong>Conclusion: </strong>The severity of malocclusion is associated with incorrect frontal body posture, with individuals with defined malocclusion being more likely to develop improper frontal posture.</p><p><strong>Clinical significance: </strong>Patients with the presence of malocclusion has more risk of developing incorrect frontal body posture. Therefore, orthodontists should consider this relationship when treating their patients. How to cite this article: Morales-Atarama PG, Arriola-Guillén LE. The Association between Body Posture and Malocclusion in Adolescents: A Cross-sectional Study. J Contemp Dent Pract 2025;26(1):48-54.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"48-54"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144044171","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}

{"title":"Bone Remodeling Optimization in Orthodontics: Harnessing Periodontal Ligament Cell-derived Exosomes and Anti-inflammatory Compounds.","authors":"Anwar Shawqi Alhazmi","doi":"10.5005/jp-journals-10024-3816","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3816","url":null,"abstract":"<p><strong>Aim and background: </strong>Exosomes transport biological information between cells and can influence periodontal tissue remodeling. Particularly, the periodontal ligament cells (PDLCs) receive mechanical stimuli and transmit them via exosomes to osteoblasts and assist in tissue remodeling during the orthodontic treatment.</p><p><strong>Materials and methods: </strong>This study uses computational methods to examine the effects of mechanical force-induced PDLC-transported exosomal micro RNA (miRNA) on osteoblast cells and to identify potential adjuvant therapies during orthodontic treatment.</p><p><strong>Results: </strong>As a result of the investigation, 29 miRNAs were overrepresented in the PDLC-derived exosome, and when transported to osteoblasts, it regulates 3,768 mRNA targets, forming a vital gene interaction network. From the network, the crucial cluster was extracted, which plays a role in FoxO signaling, PI3K-Akt signaling, Ras signaling, and MAPK signaling pathways. Further, the cluster analysis with Cytohubba plug-in identified the <i>basic leucine zipper and W2 domains 1 (BZW1)</i> gene as a key target of miRNAs (hsa-let-7d-5p, hsa-miR-101-3p, and hsa-miR-15b-5p) in osteoblast cells. Molecular docking (MD) of 2,696 anti-inflammatory compounds against <i>BZW1</i> indicates the least binding energy of -6.33 kcal/mol for C₂₁H₂₄N₄O₂ that effectively interacts with <i>BZW1</i> protein. Further molecular mechanics-generalized born model and solvent accessibility analysis showed a free-binding energy of -34.56 kcal/mol for the C₂₁H₂₄N₄O₂-<i>BZW1</i> complex. Finally, molecular dynamics simulation confirms stable confirmation of the C₂₁H₂₄N₄O₂-<i>BZW1</i> complex.</p><p><strong>Conclusion: </strong>Our study stipulates the molecular mechanisms that occurred in osteoblast cells upon mechanical stimuli in PDLC, which is critically useful to the development of adjuvant therapeutic molecules for the benefit of orthodontic treatment.</p><p><strong>Clinical significance: </strong>The crucial mechanism by which exosomes deliver miRNAs to the osteoblast cells capable of inhibiting the significant genes/mRNAs could benefit orthodontic treatment. How to cite this article: Alhazmi AS. Bone Remodeling Optimization in Orthodontics: Harnessing Periodontal Ligament Cell-derived Exosomes and Anti-inflammatory Compounds. J Contemp Dent Pract 2025;26(1):77-85.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"77-85"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144064772","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}

{"title":"Comparative Analysis of Penetrability and Adaptability of Different Fluoride-releasing Pit and Fissure Sealants: An <i>In Vitro</i> Study.","authors":"Nasreen Hassan Albar, Thilla Sekar Vinothkumar, Wejdan Hassan Shibli, Ahlam Mohammed Bakri, Abdulhamid Aidarous Alamir, Apathsakayan Renugalakshmi, Waad Fahmi Khayat, Bassam Zidane","doi":"10.5005/jp-journals-10024-3809","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3809","url":null,"abstract":"<p><strong>Aim: </strong>This study aimed to analyze the penetrability and adaptability of three different fluoride-releasing sealants in different fissure types.</p><p><strong>Materials and methods: </strong>Extracted human premolars (<i>n</i> = 45) were randomly divided into three groups of 15 each and randomly allotted to receive the sealants Fisseal (FS), Helioseal F Plus (HS), and Beautisealant (BS). The sealed samples were sectioned in the buccolingual plane, and the deepest fissures were examined under a scanning electron microscope (SEM). The samples were also observed for the fissure types (I, IK, U, V, and inverted Y). The percentage of penetration (POP) and overall gap (OG) between the sealant and fissure wall were measured from the SEM images using ImageJ software.</p><p><strong>Results: </strong>Group FS exhibited the highest POP (68 ± 29.3%) and the smallest OG (1.0 ± 0.9 µm). The least POP was observed for group BS (52.3 ± 20.3%). The I-type fissure was seen in most of the teeth (33%), and the V-type fissure was the least (18%). The mean OG was significantly less in group FS (one-way analysis of variance; <i>p</i> = 0.046). The mean POP was the highest in group FS, followed by groups HS and BS.</p><p><strong>Conclusion: </strong>This SEM study revealed that FS had relatively superior penetrability and adaptability into the fissures, whereas BS was the least-performing material.</p><p><strong>Clinical significance: </strong>Pits and fissures are harder to clean and more prone to dental caries than smooth surfaces because of their plaque-retentive nature. Fisseal could be clinically recommended to seal the pits and fissures and prevent dental caries, as they are long-lasting, and durable. How to cite this article: Albar NH, Vinothkumar TS, Shibli WH, <i>et al.</i> Comparative Analysis of Penetrability and Adaptability of Different Fluoride-releasing Pit and Fissure Sealants: An <i>In Vitro</i> Study. J Contemp Dent Pract 2025;26(1):55-61.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"55-61"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144032308","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}

{"title":"Comparative Evaluation of Cytotoxicity, Anti-inflammatory, and Drug Release Profiles of Allicin-incorporated GO-AgNP Hydrogel: An <i>In Vitro</i> Study.","authors":"Rathna Piriyanga, Manish Ranjan, Saurav Bathla, Shubhi Gupta, Jai Krishna Srikanth Kolliboyana, Anand Sherwood","doi":"10.5005/jp-journals-10024-3812","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3812","url":null,"abstract":"<p><strong>Aim: </strong>This study evaluates the cytotoxicity, anti-inflammatory effects, and drug release profiles of an allicin-incorporated graphene oxide-silver nanoparticle (GO-AgNP) hydrogel as an intracanal medicament.</p><p><strong>Materials and methods: </strong>The allicin-incorporated GO-AgNP hydrogel was synthesized and characterized using transmission electron microscopy. Human periodontal ligament (PDL) fibroblasts were used for 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide cytotoxicity assays, assessing cell viability at 10, 25, 50, and 100 µg/mL concentrations over 24, 48, and 72 hours. Anti-inflammatory effects were evaluated by analyzing interleukin (IL)-6, IL-8, and tumor necrosis factor (TNF)-α expression in lipopolysaccharide (LPS)-induced RAW 264.7 macrophage cells via quantitative polymerase chain reaction at 24 hours and 7 days. Drug release was assessed using ultraviolet-visible spectrophotometry over 168 hours in root canal-treated teeth.</p><p><strong>Results: </strong>The allicin-incorporated GO-AgNP hydrogel exhibited concentration-dependent cytotoxicity, with cell viability exceeding 90% at 10-20 µg/mL but decreasing significantly at 50-100 µg/mL (<i>p</i> < 0.05). The half-maximal inhibitory concentration was approximately 45 µg/mL. Anti-inflammatory assays showed a reduction in IL-6 (45%), IL-8 (38%), and TNF-α (42%) compared with the LPS-treated control (<i>p</i> < 0.05). Drug release analysis revealed a sustained release pattern, with the 20 µg/mL hydrogel demonstrating a higher cumulative release than the 10 µg/mL hydrogel.</p><p><strong>Conclusion: </strong>The allicin-incorporated GO-AgNP hydrogel demonstrates potential as a biocompatible intracanal medicament with anti-inflammatory properties and controlled drug release. Further optimization is required for clinical application.</p><p><strong>Clinical significance: </strong>This allicin-incorporated GO-AgNP hydrogel shows promise as an intracanal medicament due to its biocompatibility, anti-inflammatory properties, and controlled drug release. By modulating the inflammatory response, it may contribute to reduced postoperative discomfort and improved periapical healing. Additionally, its bioactive properties may support tissue repair and regeneration, making it a potential candidate for regenerative endodontic procedures. How to cite this article: Piriyanga R, Ranjan M, Bathla S, <i>et al.</i> Comparative Evaluation of Cytotoxicity, Anti-inflammatory, and Drug Release Profiles of Allicin-incorporated GO-AgNP Hydrogel: An <i>In Vitro</i> Study. J Contemp Dent Pract 2025;26(1):71-76.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"71-76"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144040090","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}

{"title":"Assessment of Hyoid Bone Position and Soft Palate Morphology in Different Skeletal Patterns Using Lateral Cephalograms: A Cross-sectional Study.","authors":"Fadia Awadalkreem, Shahistha Dasnadi, Nancy S Farghal, Faizan Murtaza, Abdulmalik Warsame","doi":"10.5005/jp-journals-10024-3803","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3803","url":null,"abstract":"<p><strong>Aim: </strong>To assess the hyoid bone position and soft palate morphology among a cohort of patients with skeletal class I, II, and III using lateral cephalograms.</p><p><strong>Materials and methods: </strong>A retrospective cross-sectional study design was conducted at Ras Al Khaimah College of Dental Sciences using pretreatment lateral cephalograms. The cephalograms were categorized into 3 groups based on the skeletal classes. The hyoid bone position was traced in each group using the following parameters: The C3-H distance from the third cervical vertebrae to the lower border of the hyoid bone, the C3-RGn distance from the 3rd cervical vertebrae to the retrognathion, and the H-RGn distance from the lower border of hyoid bone to retrognathion. Measurements were calculated and compared. The soft palate morphology was also studied.</p><p><strong>Results: </strong>Seventy-eight patients' records (with age range 18-24 years) were investigated. A one-way analysis of variance test along with a <i>post-hoc</i> test revealed a significant difference in C3-H, C3-RGn, and H-RGn between class I and class II and III (<i>p</i>-value 0.006, 0.004, and 0.040, respectively). Class III reported the largest distances, while class II reported the smallest distance. The leaf-shaped soft palate morphology was the most predominant soft palate shape observed in all the classes, while the S-shaped was the least soft palate shape in class I, the straight line-shape in class II, and the crook shape in class II and class III. The soft palate morphology was not associated significantly with either the patient's gender or the skeletal variations. None of the samples in classes I and III showed the butt-like and S-shaped soft palate, respectively.</p><p><strong>Conclusion: </strong>The hyoid bone position and the soft palate morphology show variation among the different skeletal classes.</p><p><strong>Clinical significance: </strong>The radiographic determination of the hyoid bone position and soft palate morphology using lateral cephalograms can provide valuable insight for the diagnosis and management of the different skeletal variations. How to cite this article: Awadalkreem F, Dasnadi S, Farghal NS, <i>et al.</i> Assessment of Hyoid Bone Position and Soft Palate Morphology in Different Skeletal Patterns Using Lateral Cephalograms: A Cross- sectional Study. J Contemp Dent Pract 2025;26(1):40-47.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"40-47"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144054163","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}

{"title":"Bioactivity and Element Composition of Three Endodontic Root Canal Sealers.","authors":"Loai Alsofi","doi":"10.5005/jp-journals-10024-3791","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3791","url":null,"abstract":"<p><strong>Background: </strong>This study aimed to evaluate the bioactivity and depth of penetration of three endodontic root canal sealers: AH Plus (AH), Endosequence Bioceramic Sealer BC, and Endosequence Bioceramic HiFlow Sealer (HiFlow).</p><p><strong>Materials and methods: </strong>Thirty extracted mandibular premolars with single canals were randomly divided into three groups (<i>n</i> = 10) based on the sealer used for root canal obturation. Ten teeth were obturated with AH Plus (AH) sealer and warm vertical compaction (WVC), 10 teeth were obturated with bioceramic root canal sealer (BC), and single cone obturation, and 10 teeth were obturated with bioceramic high flow (HiFlow) sealer and WVC. The groups were further divided into two subgroups (<i>n</i> = 5) for immersion in phosphate-buffered saline (PBS) or deionized water (DIW) for 28 days. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analysis were used to assess the depth of sealer penetration and elemental composition, respectively. Statistical analyses were conducted using one-way ANOVA, Tukey's HSD, and paired <i>t</i>-tests.</p><p><strong>Results: </strong>HiFlow exhibited the highest depth of penetration (103.2 ± 42.2 μm), followed by AH (94.6 ± 36.3 μm) and BC (88.6 ± 43.3 μm), with no statistically significant differences between the groups (<i>p</i> = 0.510). Elemental analysis revealed significant differences in Ca/P ratios in AH between PBS (1.8 ± 0.14) and DIW (3.0 ± 0.07) (<i>p</i> < 0.05). Hydroxyapatite crystal formation was observed in PBS-immersed samples from the HiFlow sealer group, indicating the bioactivity of bioceramic sealers.</p><p><strong>Conclusion: </strong>All three sealers show some form of bioactivity represented by the release of different elements. HiFlow demonstrated superior penetration depth, particularly when used with WVC.</p><p><strong>Clinical significance: </strong>Based on the results of the study, the use of HiFlow root canal sealer combined with WVC results in better sealer-dentin interaction and improves the quality of obturation. How to cite this article: Alsofi L. Bioactivity and Element Composition of Three Endodontic Root Canal Sealers. J Contemp Dent Pract 2025;26(1):62-70.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"62-70"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144048299","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}

{"title":"Chemotherapy and Oral Health: An Editorial on Current Insights and Future Directions.","authors":"Mohd Manshoor Ahmed, Jilly John","doi":"10.5005/jp-journals-10024-3735","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3735","url":null,"abstract":"<p><p>How to cite this article: Ahmed MM, John J. Chemotherapy and Oral Health: An Editorial on Current Insights and Future Directions. J Contemp Dent Pract 2025;26(1):1-3. Keywords: Chemotherapy-induced oral complications, Digital health solutions, Interdisciplinary collaboration, Mucositis, Xerostomia.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144019072","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}

{"title":"Efficacy of Hamstring Stretching, Ultrasound Therapy, and Pressure Pain Threshold for Masseter Muscle in TMJ Dysfunction Patients: A Randomized Controlled Trial.","authors":"Srikanth Irusappan, Frankin Shaju M Kurusumuthu, Sajani Ramachandran","doi":"10.5005/jp-journals-10024-3815","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3815","url":null,"abstract":"<p><strong>Aim: </strong>This study aims to evaluate the impact of adding bilateral hamstring muscle stretching to pressure pain threshold and ultrasound therapy, compared to using pressure pain threshold and ultrasound therapy alone, on pain reduction and maximum vertical mouth opening (MVMO) in individuals with temporomandibular disorders (TMD).</p><p><strong>Materials and methods: </strong>A total of 56 participants diagnosed with TMD were randomly allocated into 2 groups: The Experimental Group, which received bilateral hamstring stretching, pressure pain threshold application, and ultrasound therapy, and the control group, which received only pressure pain threshold and ultrasound therapy. The study included participants of both genders, aged between 18 and 35 years, with a previous history of TMD pain lasting no longer than 6 months. Assessments were conducted at baseline and after 5 treatment sessions per week over 1 week. Pain levels were measured using the visual analog scale (VAS), and MVMO was assessed using a vernier caliper. Data were recorded and statistically analyzed.</p><p><strong>Results: </strong>The results showed a significant reduction in pain and an increase in MVMO in both groups. In the Experimental Group, the mean pain score on the VAS decreased from 6.8 ± 1.2 to 2.9 ± 1.1, whereas in the control group, it decreased from 6.7 ± 1.3 to 4.1 ± 1.2 (<i>p</i> < 0.001). Similarly, MVMO improved significantly, with an increase from 31.4 ± 2.6 mm to 39.8 ± 2.1 mm in the Experimental Group, compared to an increase from 31.2 ± 2.8 mm to 36.1 ± 2.4 mm in the control group (<i>p</i> < 0.001). The between-group comparison showed a significant difference in pain reduction and MVMO improvement in the Experimental Group compared to the control group (<i>p</i> < 0.001).</p><p><strong>Conclusion: </strong>Hamstring stretching combined with ultrasound therapy and pressure pain threshold application was significantly more effective in reducing TMD-related pain and improving MVMO than pressure pain threshold and ultrasound therapy alone. These findings indicate that integrating hamstring stretching into TMD treatment protocols could improve rehabilitation outcomes.</p><p><strong>Clinical significance: </strong>The findings of this study highlight the potential benefits of integrating hamstring stretching into standard physiotherapy interventions for TMD. Given the significant improvements observed in pain reduction and MVMO, clinicians may consider including hamstring flexibility exercises in rehabilitation programs for TMD patients to achieve better functional outcomes. How to cite this article: Irusappan S, Kurusumuthu FSM, Ramachandran S. Efficacy of Hamstring Stretching, Ultrasound Therapy, and Pressure Pain Threshold for Masseter Muscle in TMJ Dysfunction Patients: A Randomized Controlled Trial. J Contemp Dent Pract 2025;26(1):34-39.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"34-39"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143999663","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}

{"title":"Fracture Resistance and Failure Modes of Cuspal-coverage Restorations Using Fiber-reinforced and Non-fiber-reinforced Materials: An <i>In Vitro</i> Study.","authors":"Andrea L Pierce, Amar Kosaraju, Joseph L Gedge, Kraig S Vandewalle","doi":"10.5005/jp-journals-10024-3806","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3806","url":null,"abstract":"<p><strong>Background: </strong>The purpose of this <i>in vitro</i> study was to determine the fracture resistance and failure mode of direct cuspal-coverage restorations utilizing fiber-reinforced and non-fiber-reinforced materials.</p><p><strong>Materials and methods: </strong>Fifty extracted human mandibular third molars were prepared for mesio-occlusal-facial single cuspal-coverage restorations. Ten cuspal-coverage restorations were constructed per group using the following restorative material types: nanofill composite (NC), nanometer-scale, short-fiber-reinforced composite (NS-SFRC), micrometer-scale, short-fiber-reinforced composite (MS-SFRC) dentin base covered with a nanofill composite (MS-SFRC + NC), polyethylene fiber-based leno-weave covered with nanofill composite (PF + NC), and bonded amalgam (AM). After thermocycling and cyclic fatiguing, fracture load testing was performed on the specimens utilizing a universal testing machine. Then, each specimen was examined to determine failure mode. Data were analyzed with a one-way analysis of variance and Tukey's <i>post hoc</i> tests (α = 0.05).</p><p><strong>Results: </strong>The highest fracture load was found in MS-SFRC + NC group (1112.9 ± 249.3 N), which was significantly greater than all other groups (<i>p</i> < 0.011). The NC group had the lowest fracture load (651.7 ± 228.3 N), but it was not significantly different from NS-SFRC (701.6 ± 209.4 N, <i>p</i> = 0.989), PF + NC (754.7 ± 267.7 N, <i>p</i> = 0.862), or AM (749.3 ± 213.7 N, <i>p</i> = 0.884). The MS-SFRC + NC group had the greatest percentage of adhesive failures (70%), and the AM group had the greatest percentage of cohesive failures (80%). The NS-SFRC group had the greatest percentage of failures of the tooth/restoration complex with periodontal involvement (40%) and both the NC and PF + NC had the greatest percentage of failures of the tooth/restoration complex without periodontal involvement (20%).</p><p><strong>Conclusions: </strong>The MS-SFRC + NC group had the highest fracture load and was significantly greater than all other groups-which were not significantly different from each other: MS-SFRC + NC > PF + NC = AM = NS-SFRC = NC. The observed fracture mode for the MS-SFRC + NC group was predominantly adhesive, resulting in an overall repairable failure mode.</p><p><strong>Clinical significance: </strong>Limited research is available evaluating the fracture resistance and failure mode of single cuspal-coverage restorations using fiber-reinforced materials. For enhanced strength in cuspal-coverage composite restorations, a micrometer-scale, short-fiber-reinforced composite dentin base combined with an overlay of an NC may be advantageous. How to cite this article: Pierce AL, Kosaraju A, Gedge JL, <i>et al.</i> Fracture Resistance and Failure Modes of Cuspal-coverage Restorations Using Fiber-reinforced and Non-fiber-reinforced Materials: An <i>In Vitro</i> Study. J Contemp Dent Pract 2025;26(1):4-9.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"4-9"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144027499","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}

{"title":"Clinical Evaluation of Implant Stability in Poor Quality Maxillary Bone: Reverse Drilling vs Osteotome Techniques: A Randomized Controlled Clinical Trial.","authors":"Mostafa M Awad, Marwa El Nawawy, Ibrahim El Refaie, Amr F Zahran","doi":"10.5005/jp-journals-10024-3808","DOIUrl":"https://doi.org/10.5005/jp-journals-10024-3808","url":null,"abstract":"<p><strong>Aim: </strong>The current study was conducted to evaluate the potential of a dental implant placed with a new reverse drilling technique (test group) as an alternative treatment option to a dental implant placed with an osteotome technique (control group) according to primary implant stability.</p><p><strong>Materials and methods: </strong>With fourteen patients in each group, twenty-eight implants were positioned in the posterior maxilla and split equally between two groups: Group A (new reverse drilling technique) and group B (osteotome technique). Periotest M (PTV) was used to measure implant stability, cone-beam computed tomography (CBCT) was used to measure crestal bone loss (mm) and bone density Hounsfield units (HU), and the visual analog scale (VAS) was used to measure pain and swelling. The patients were monitored for 5 months. For statistical analysis, SPSS (version 20) was utilized, and statistical significance was established at <i>p</i> < 0.05.</p><p><strong>Results: </strong>Regarding the primary outcome of the study, the primary stability of the control group (osteotome technique) showed higher primary stability than the test group (reverse drilling technique). The Mann-Whitney <i>U</i> test revealed that this difference was not statistically significant (<i>p</i> = 0.4820) with a mean value of 0.23 and ±0.33 standard deviation. Crestal bone loss was 0.13 ± 0.06 mm greater measured mesially in the osteotome group and 0.04 ± 0.07 mm greater measured distally in the osteotome group. In each case, the differences were not statistically significant according to independent samples <i>t</i>-tests (mesial: <i>p</i> = 0.05974; distal: <i>p</i> = 0.55541).</p><p><strong>Conclusion: </strong>The two implant placement protocols showed comparable implant stability (PTV) and implant success; the reverse drilling technique is potentially a viable option for the treatment of patients with poor bone quality.</p><p><strong>Clinical significance: </strong>The reverse drilling technique can be used as an alternative to the osteotome technique when placing implants in the posterior maxilla for its comparatively reduced invasiveness and higher patient acceptance in terms of pain and swelling. How to cite this article: Awad MM, El Nawawy M, El Refaie I, <i>et al.</i> Clinical Evaluation of Implant Stability in Poor Quality Maxillary Bone: Reverse Drilling vs Osteotome Techniques: A Randomized Controlled Clinical Trial. J Contemp Dent Pract 2025;26(1):10-17.</p>","PeriodicalId":35792,"journal":{"name":"Journal of Contemporary Dental Practice","volume":"26 1","pages":"10-17"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144036984","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}