Journal of Clinical and Experimental Dentistry最新文献

{"title":"Advances and Challenges in the Integration of Digital Technologies in Complete Dentures: A Narrative Literature Review.","authors":"Jéssica de Oliveira Alvarenga Freire, Adriana Cristina Zavanelli, José Vitor Quinelli Mazaro, Ricardo Alexandre Zavanelli, Rodrigo Sversut de Alexandre, Otavio Marino Dos Santos Neto","doi":"10.4317/jced.62598","DOIUrl":"10.4317/jced.62598","url":null,"abstract":"<p><strong>Background: </strong>The fully edentulous population in Brazil comprises approximately 22 million individuals, highlighting the importance of their functional, aesthetic, and psychosocial rehabilitation. Complete dentures (CD) remain the most accessible treatment option for these patients, supported by well-established scientific techniques. The introduction of the digital workflow in Dental Prosthetics has streamlined production, reducing clinical time and material consumption. While the digital workflow is well-established in fixed prosthetics, its application in CD still lacks equivalent validation. Given the challenges of achieving retention, stability, comfort, and aesthetics, it remains uncertain whether the digital workflow can deliver outcomes comparable to those of the conventional analog method.</p><p><strong>Material and methods: </strong>A qualitative literature review was conducted through searches in the PUBMED database using the terms 'digital complete denture,' 'complete denture,' 'scanning,' 'intraoral scanning,' and 'CAD-CAM,' covering the period from 1994 to 2024. Initially, articles were screened based on their titles. Subsequently, the abstracts of the selected studies were analyzed, and those deemed relevant were read in full.</p><p><strong>Results: </strong>Intraoral scanning of edentulous ridges exhibits accuracy comparable to conventional impressions in static áreas, however, reproducing dynamic regions remains a challenge. The adaptation of digital complete dentures (DCDs) obtained through intraoral scanning is considered clinically acceptable, although retention outcomes remain controversial. Milled polymethyl methacrylate (PMMA) demonstrates mechanical properties equal to or superior to those of thermopolymerizable PMMA. In contrast, 3D-printed resins exhibit mechanical properties and longevity similar to or inferior to both milled and thermopolymerizable PMMA. Overall, patient acceptance of DCDs appears to be positive.</p><p><strong>Conclusions: </strong>DCDs can be manufactured more efficiently and rapidly, with clinical outcomes and patient acceptance comparable to conventional CDs. However, further scientific evidence and long-term validation are still required. <b>Key words:</b>Complete dentures, CAD/CAM, digital complete dentures, digital workflow, intraoral scanning.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e587-e593"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142369/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248116","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":"Comparison of Color Stability of a Monochromatic Resin Versus Bulk-Fill and Micro-Hybrid Resins.","authors":"Bruno Spigno-Paco, José Giancarlo Tozo-Burgos, Roger Calla-Poma, Marco Sánchez-Tito","doi":"10.4317/jced.62653","DOIUrl":"10.4317/jced.62653","url":null,"abstract":"<p><strong>Background: </strong>To compare the color stability of a monochromatic nano-hybrid resin, a Bulk-Fill nano-hybrid resin, and a micro-hybrid resin after exposure to three staining beverages.</p><p><strong>Material and methods: </strong>A monochromatic nano-hybrid resin (Vittra APS Unique), a Bulk-Fill nano-hybrid resin (Filtek™ Bulk-Fill) and a micro-hybrid resin (Filtek™ Z250 XT) were used. Two hundred twenty-eight samples (8 mm x 2 mm discs) were manufactured. The samples were divided into four subgroups based on the type of staining beverage (Coffee, black tea, Coca-Cola). Distilled water was used as control. The initial color of the samples was recorded after 24 hours, as well as after 7 and 15 days of immersion. The color difference (ΔE) was calculated with the CIE2000 formula. The two-way ANCOVA test was used for the analysis, and the significance level was adjusted to 5%.</p><p><strong>Results: </strong>A statistically significant interaction between beverage and resin types on ΔE values was observed while controlling for immersion time (<i>p</i><0.001). In the analysis of the adjusted means, coffee and black tea primarily influenced the color change (ΔE) in the monochromatic resin, with values of 7.93 ± 1.90 and 6.93 ± 2.06, respectively. However, the most notable change was seen in the Bulk-Fill resin when exposed to Coca-Cola, which resulted in a ΔE value of 24.41 ± 0.41.</p><p><strong>Conclusions: </strong>The monochromatic resin showed a greater color change than the micro-hybrid and Bulk-Fill resins when immersed in coffee and black tea. Conversely, the Bulk-Fill resin was more prone to discoloration when exposed to Coca-Cola. <b>Key words:</b>Resin, Chromatic stability, Spectrophotometry, Color perception, Carbonated beverages, Coffee, Tea.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e521-e527"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142363/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248119","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":"The effect of Er:YAG and Nd:YAG lasers and total-etch and universal adhesives on composite resin restoration microleakage.","authors":"Farahnaz Sharafeddin, Arefeh Torabi Parizi, Maryam Jamshidi","doi":"10.4317/jced.62641","DOIUrl":"10.4317/jced.62641","url":null,"abstract":"<p><strong>Background: </strong>The present investigation examined Er:YAG and Nd:YAG lasers efficiency in reducing microleakage when paired with two adhesive systems.</p><p><strong>Material and methods: </strong>Class V cavities were created on the buccal and lingual sides of 30 extracted premolars. The samples were distributed into the following groups: 1) 37% phosphoric acid + Adper Single Bond 2; 2) Nd:YAG laser + Adper Single Bond 2; 3) Er:YAG laser + Adper Single Bond 2; 4) 37% phosphoric acid + Gluma Universal Bonding; 5) Nd:YAG laser + Gluma Universal Bonding; 6) Er:YAG laser + Gluma Universal Bonding. Each specimen was cured and restored with nanohybrid composite Z350. Dye penetration was used to assess microleakage and examined under a stereomicroscope. The findings were compared using Mann-Whitney, Wilcoxon Signed Ranks, and Kruskal-Wallis tests (α = 0.05).</p><p><strong>Results: </strong>The microleakage score in the occlusal margin was comparable between the groups. On the other hand, the microleakage in the gingival margin was significantly different between the groups (<i>P</i>=0.004). The post-hoc comparison showed that the microleakage score for samples treated with Er: YAG was significantly lower than those treated with Nd: YAG (<i>P</i><0.05). The microleakage score in the gingival margin was significantly higher than that of the occlusal margin in all groups (<i>P</i><0.05), except for the Er: YAG + Single Bond 2 group (<i>P</i>=0.15).</p><p><strong>Conclusions: </strong>Except for Er:YAG + Single Bond 2, all groups showed more microleakage at the gingival margin compared to the occlusal margin. The Er:YAG laser outperformed the Nd:YAG laser at the gingival margin. <b>Key words:</b>Dental Adhesives, Dental Leakage, Er-YAG Laser, Nd-YAG Laser.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e535-e541"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142361/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248126","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":"Salivary and gingival crevicular fluid (GCF) protein biomarkers as proxies of root resorption following orthodontic tooth movement. A systematic review.","authors":"Jerry Kuruthukulangara, Theodore Eliades, Despina Koletsi","doi":"10.4317/jced.62494","DOIUrl":"10.4317/jced.62494","url":null,"abstract":"<p><strong>Background: </strong>Orthodontically induced root resorption (OIRR) is a common complication of orthodontic treatment, characterized by inflammatory and remodeling processes. This systematic review (SR) aimed to evaluate the potential of salivary and gingival crevicular fluid (GCF) biomarkers as proxies for the early detection of an ongoing root resorption process during orthodontic tooth movement.</p><p><strong>Material and methods: </strong>Electronic searches were performed in multiple databases of published and grey literature, up to May 2023. Eligible studies included participants undergoing orthodontic treatment with reported biomarkers linked to root resorption against a control group. Analysis methods of the biomarkers such as ELISA, Western Blot, mass spectrometry, were utilized.</p><p><strong>Results: </strong>Seven studies met the inclusion criteria, with sample sizes ranging from 19 to 74 participants and varied study designs, with methodological heterogeneity. The detected proteins and biomarkers were dentin phosphoryn, dentin sialoprotein, dentin sialophosphoprotein, fetuin-A, IFN- γ, IL-10, IL-12p70, IL-7 p21-ARC, sIgA and these served as promising indicators of increased root resorption activity, during orthodontic treatment.</p><p><strong>Conclusions: </strong>Biomarkers and proteins in saliva and GCF demonstrated a potential for early detetction and monitoring of OIRR, offering a non-invasive alternative to radiographic techniques. However, standardization of protein and biomarker assessment protocols and development of large-scale studies seem imperative. <b>Key words:</b>Biomarkers, gingivial crevicular fluid, orthodontic treatment, root resorption, saliva, systematic review.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e576-e586"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142365/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248125","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":"A comparative study of platelet-rich fibrin plugs versus biphasic calcium phosphate in treating infrabony defects in patients with periodontitis: Insights from a randomized controlled trial.","authors":"Parkavi Arumugam, Mala Dixit Baburaj, Pradeep Kumar Yadalam, Carlos M Ardila","doi":"10.4317/jced.62666","DOIUrl":"10.4317/jced.62666","url":null,"abstract":"<p><strong>Background: </strong>Bone grafts and growth factors have been utilized to manage infrabony defects. Platelet-rich fibrin (PRF) has demonstrated significant potential due to its sustained release of growth factors and autologous nature. This study aimed to conduct a clinical and radiographic comparison of PRF plug as a sole graft versus biphasic calcium phosphate (BCP) (SybografTM - Plus) in treating infrabony defects in patients with chronic periodontitis.</p><p><strong>Material and methods: </strong>Forty patients were recruited for this randomized controlled interventional study and assigned to Group A or B via computer randomization. After open flap debridement, the infrabony defects were grafted with a PRF plug in Group A (n=20) and BCP in Group B (n=20). Clinical parameters, including the Plaque Index (PI) and Gingival Index (GI), were measured at baseline, one month, three months, and six months post-surgery while Probing Pocket Depth (PPD) and Clinical Attachment Level (CAL) were measured at baseline, three months, and six months post-surgery. The radiographic depth of defect and bone fill were assessed at baseline, immediately, and six months post-surgery. Parametric tests (t-test for two groups, ANOVA for three or more groups) were employed for statistical analysis.</p><p><strong>Results: </strong>At six months post-surgery, the differences in terms of PI (<i>p</i>-value - 0.3886), GI (<i>p</i>-value - 0.1633), PPD (<i>p</i>-value - 0.3240), CAL (<i>p</i>-value - 0.2493), and radiographic bone fill (<i>p</i>-value - 0.8168) between both groups were not statistically significant.</p><p><strong>Conclusions: </strong>PRF plug as a sole grafting material has shown promising results for periodontal regeneration comparable to BCP in the treatment of infrabony defects in patients with chronic periodontitis. <b>Key words:</b>Periodontitis, Infrabony defects, Platelet-rich fibrin, Biphasic calcium phosphate, Periodontal regeneration, Radiographic bone fill.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e560-e568"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142374/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248112","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":"Immediate dental implant placement: A bibliometric analysis of the 100 most cited articles.","authors":"Lucas Menezes Dos Anjos, Aurélio de Oliveira Rocha, Felipe Gomes Dallepiane, Fernanda Pretto Zatt, Filipe Colombo Vitali, Pablo Silveira Santos, Christiane Cabral Leite, Natalia de Oliveira Miranda, Ariadne Cristiane Cabral Cruz, Mariane Cardoso, Bruno Henriques","doi":"10.4317/jced.62274","DOIUrl":"10.4317/jced.62274","url":null,"abstract":"<p><strong>Background: </strong>This study aims to scrutinize the characteristics of the 100 most cited articles concerning the immediate placement of dental implants.</p><p><strong>Material and methods: </strong>Employing a specific search strategy comprising keywords and Boolean operators, we conducted a comprehensive search in the Web of Science database in January 2024. The identified articles were then arranged in descending order based on their citation counts. Two researchers meticulously gathered information on the number and density of citations, publication year and journal, study design, authorship and affiliations, keywords, as well as the country and continent of origin. Bibliometric maps were constructed using VOSviewer.</p><p><strong>Results: </strong>The citations for the selected articles ranged from 76 to 569, spanning the publication years 1994 to 2018. Clinical Oral Implants Research emerged as the most frequently referenced journal, accounting for 30% of the publications. Interventional studies constituted the majority (29%) of the articles. Buser D and Lang NP were the most prolific authors, each contributing 11% of the published articles. The University of Bern had a total representation of 10%. The United States garnered significant attention at 20%, while Europe emerged as the predominant continent, constituting 46% of the publications. VOSviewer maps illustrated a convergence of authorship.</p><p><strong>Conclusions: </strong>The 100 most cited articles on immediate implant placement predominantly originated from authors in the United States, emphasizing Clinical Oral Implants Research as a notable outlet featuring observational studies. <b>Key words:</b>Immediate implantation, Bibliometric analysis, Dental implants.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e507-e514"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142360/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248123","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":"Unfavorable fractures during Sagittal Split Osteotomy. What are the Risk Factors? A Retrospective Tomographic Study.","authors":"Thalles Moreira Suassuna, Elenisa Glaucia Ferreira Dos Santos, Sérgio Murilo Cordeiro de Melo Filho, Maria Taywri Almeida Costa, José Rodrigues Laureano Filho, Fábio Andrey da Costa Araújo","doi":"10.4317/jced.62726","DOIUrl":"10.4317/jced.62726","url":null,"abstract":"<p><strong>Background: </strong>This study aims to analyze the epidemiology of \"Bad Split\" (BS) during Sagittal Osteotomy of the Mandible, identifying anatomical and technical risk factors associated with its occurrence.</p><p><strong>Material and methods: </strong>A retrospective analysis was conducted on 157 patients (314 osteotomies) over five years. Multi-slice helical CT scans, both pre- and post-operative, were examined to classify BS and identify potential risk factors. Anatomical variables included the presence of third molars, edentulism, prior fixation systems, mandibular ramus dimensions, lingula position, and alveolar crest height. Technical aspects of osteotomy execution were also assessed. Measurements were performed using Dolphin Imaging Software 11.95 after orienting the skull in the Natural Head Position.</p><p><strong>Results: </strong>The incidence of BS was 3.2% (10 patients), with a slight left-side predominance (60%). Class A BS (distal fracture of the proximal segment) was the most common (60%). Anatomically, 83.3% of Class A cases had a more anteriorly positioned lingula and 66% presented a lower alveolar crest. Technically, 80% of BS cases showed deviations in osteotomy execution, with incomplete osteotomy at the basal level being the most frequent (60%).</p><p><strong>Conclusions: </strong>This study suggests that technical factors, particularly osteotomy execution, play a more decisive role in BS occurrence than anatomical variables. Surgical precision is crucial, emphasizing careful osteotomy techniques to minimize the risk of BS, especially in anatomically predisposed mandibles. <b>Key words:</b>Bad split, Intraoperative complications, Bilateral sagittal split osteotomy, Orthognathic surgery.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e501-e506"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142364/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248137","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":"A Comprehensive Clinical Perspective of Nasoalveolar Molding (NAM) for the Treatment of Cleft Lip and Palate patients.","authors":"Abdalmawla Alhussin Ali Ali","doi":"10.4317/jced.62575","DOIUrl":"10.4317/jced.62575","url":null,"abstract":"<p><strong>Background: </strong>Cleft lip and palate is widespread congenital abnormalities affecting the orofacial area. Nasoalveolar Molding (NAM) is a pre-surgical orthodontic method that has revolutionized the management of newborns with cleft lip and palate. Objectives: The purpose of this research are to present the steps of NAM appliance construction as well as to evaluate how presurgical nasoalveolar molding affected the long-term nasal, alveolar, and palate shape of infants with cleft lip and palate.</p><p><strong>Material and methods: </strong>Individuals with complete unilateral cleft lip and palate are candidates for NAM treatment. Earlier intervention, within the initial weeks of life, is essential for attaining best outcomes. Patients must be assessed for their general health and appropriateness for the NAM management.</p><p><strong>Results: </strong>The improvement of nostril height was 0.8 mm after application of NAM appliance and after primary surgical repair by 0.7mm, whereas the nostril width reported decrease by 1.4 mm after utilization of NAM and by 1 mm after lip repair. Columella-nasal base angle increase from 51.8 º to 90.1 º after application of NAM appliance and primary surgical repair. There were reduction of alveolar gap width by 7.6 mm and 9.3 mm after application of NAM appliance and primary surgical repair respectively.</p><p><strong>Conclusions: </strong>Nasoalveolar molding is effective pre-operative treatment for newborns with cleft lip and palate in comparison to their birth status. The advantages of this advanced approach to cleft treatment will be further increased by continuous research and improvement of NAM procedures, as well as a strong focus on interdisciplinary collaboration. <b>Key words:</b>Nasoalveolar molding for cleft lip and palate, Craniofacial anomalies, Pediatric dentistry, Infant Orthopedics, Pre-surgical orthodontics, Quality of life.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e552-e559"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142368/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248113","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":"Comparative evaluation of fracture resistance force of three different posterior aesthetic crowns and occlusal wear of antagonist primary teeth - An <i>in vitro</i> study.","authors":"Pooja V Ravi, Kavitha Ramar, Víctor Samuel, Pradeep K Yadalam, Carlos M Ardila","doi":"10.4317/jced.62730","DOIUrl":"10.4317/jced.62730","url":null,"abstract":"<p><strong>Background: </strong>Aesthetic restorations for managing severely carious primary molars pose a clinical challenge, particularly regarding limited treatment options and the importance of aesthetics to parents. While zirconia crowns are commonly used for posterior teeth due to their aesthetic appeal, advancements in digital technology have introduced alternative options such as polymethylmethacrylate (PMMA) crowns and 3D printable photopolymer resin crowns, which offer cost-effective alternatives. This in vitro study aimed to comparatively evaluate the fracture resistance force (FRF) and occlusal wear of three types of posterior aesthetic crowns: milled zirconia crowns, PMMA crowns, and 3D printable photopolymer resin crowns.</p><p><strong>Material and methods: </strong>A universal mechanical testing machine was employed to measure the FRF, while occlusal wear was assessed by subjecting five samples from each group to chewing simulation with opposing natural teeth. Preoperative and post-operative 3D scan measurements were obtained.</p><p><strong>Results: </strong>The average force required to fracture 3D printable photopolymer resin crowns was 877.212 N, compared to 1,326.522 N for PMMA crowns and 1,712.488 N for milled zirconia crowns. Significant differences in occlusal wear were observed in the zirconia (<i>p</i>-value= 0.005) and 3D printed crown groups (<i>p</i>-value= 0.010) when comparing pre-operative and post-operative measurements.</p><p><strong>Conclusions: </strong>This study suggests that PMMA crowns exhibit clinically acceptable fracture resistance force and cause minimal occlusal wear on opposing primary teeth. These findings support the potential long-term clinical use of PMMA crowns as an alternative to zirconia crowns in aesthetic restorations for severely decayed primary molars. <b>Key words:</b>Zirconia crowns, polymethylmethacrylate crowns, Photopolymer resin crowns, Primary teeth.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e528-e534"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142372/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248118","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":"A Rare Case of Pyknodysostosis (Toulouse-Lautrec Syndrome): Dental Perspectives on Comprehensive Management.","authors":"Rishi Tyagi, Amit Khatri, Deepak Khandelwal, Padma Yangdol, Aman Kumar, Harshita Bisht, Shaikh Misbah, Chithaluru Pranathi, Urvi Bhatia","doi":"10.4317/jced.62495","DOIUrl":"10.4317/jced.62495","url":null,"abstract":"<p><p>Pyknodysostosis (PKND), also referred to as Toulouse-Lautrec Syndrome, is a rare autosomal recessive disorder marked by short limbs, short stature, and generalized bone sclerosis. The hallmark signs of this disorder include sclerosis of the terminal phalanges, persistent fontanelles, delayed suture closure, wormian bones, absence of frontal sinuses, obtuse mandibular gonial angle, and relative mandibular prognathism. This case report elucidates a 13-year-old boy presenting with systemic features such as short stature, frontal and parietal bossing, depressed nasal bridge, a beaked nose, hypoplastic midface, wrinkled skin on the fingertips, and nail abnormalities. The oro-dental manifestations include deep palate, prominent palatal rugae, constricted maxillary arch, proclined maxillary anterior teeth and Class III skeletal profile. Radiographic findings showed hypoplastic paranasal sinuses, atrophic mandible, taurodontism, impacted permanent teeth along with several retained deciduous molars. This case highlights the need for vigilance in identifying the dental and systemic signs of PKND, emphasizing the importance of early diagnosis and tailored treatment strategies to improve patient outcomes. <b>Key words:</b>Pyknodysostosis, Toulouse-Lautrec syndrome, Dental management.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"17 5","pages":"e608-e613"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12142366/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248115","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}