Brazilian dental journalPub Date : 2026-06-26eCollection Date: 2026-01-01DOI: 10.1590/0103-644020266742
Ângela Graciela Deliga Schröder, Milena Sampaio Kuczera, Cristiano Miranda de Araujo, Veridiana Pereira de Sá de Freitas, Michelle Nascimento Meger, Katheleen Miranda Dos Santos, Rafaela Scariot, Erika Calvano Küchler, Flares Baratto-Filho
{"title":"Investigation of genetic polymorphisms associated with severe root resorption in orthodontic surgery patients.","authors":"Ângela Graciela Deliga Schröder, Milena Sampaio Kuczera, Cristiano Miranda de Araujo, Veridiana Pereira de Sá de Freitas, Michelle Nascimento Meger, Katheleen Miranda Dos Santos, Rafaela Scariot, Erika Calvano Küchler, Flares Baratto-Filho","doi":"10.1590/0103-644020266742","DOIUrl":"10.1590/0103-644020266742","url":null,"abstract":"<p><p>This study aimed to evaluate the association between genetic polymorphisms in the BMP2, BMP4, RUNX2, and SMAD6 genes and the presence of severe external apical root resorption (EARR) in orthodontic patients undergoing orthognathic surgery. EARR represents a significant adverse outcome in orthodontic treatments, and genetic susceptibility may influence its occurrence. A cross-sectional study was conducted with 158 orthodontic patients treated with fixed appliances and mono or bimaxillary orthognathic surgery. Postoperative panoramic radiographs were used to assess severe EARR. Genomic DNA was extracted from buccal epithelial cells. Seven single-nucleotide polymorphisms (SNPs) in the target genes were genotyped using real-time PCR with TaqMan assays. Statistical analyses were performed with Chi-square or Fisher's exact tests. No significant associations were observed for polymorphisms in BMP2 (rs1005464, rs235768), BMP4 (rs17563), RUNX2 (rs59983488, rs1200425), or SMAD6 (rs2119261). However, a significant association was found for SMAD6 rs3934908 (p < 0.05), with the CC genotype more frequent in patients with severe EARR. No deviations from the Hardy-Weinberg equilibrium were observed. The findings suggest that the SMAD6 rs3934908 polymorphism may be associated with an increased susceptibility to severe EARR in orthodontic surgery patients. While most SNPs showed no association, these results contribute to understanding the genetic factors involved in EARR. Further studies with larger samples are needed to confirm these findings and explore gene-environment interactions.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256742"},"PeriodicalIF":0.0,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13313149/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148371572","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}
Brazilian dental journalPub Date : 2026-06-26eCollection Date: 2026-01-01DOI: 10.1590/0103-644020256696
Silvio Mecca, Mateus Alves Mecca, Christian Rado Jarry, Marcelo Henrique Napimoga
{"title":"Accuracy of implants placed with CAD-CAM surgical templates using metal or peek sleeve: an in vitro analysis.","authors":"Silvio Mecca, Mateus Alves Mecca, Christian Rado Jarry, Marcelo Henrique Napimoga","doi":"10.1590/0103-644020256696","DOIUrl":"10.1590/0103-644020256696","url":null,"abstract":"<p><p>The sleeve material in printed surgical guides directly influences the accuracy of guided implant surgery, yet its impact on the 3D position of implants remains unclear. This study evaluated the effect of metal and PEEK (Polyether ether ketone) sleeves on implant accuracy compared to planned virtual positioning. Using CT scans and virtual planning software (coDiagnostiX), a STRAUMANN® RC BLT 4.1 x 10 mm implant was planned in the element 36 region of a partially edentulous patient (Ethical approval #5.879.848). Twenty surgical guides of hemi-arch were printed (10 with metal sleeves, 10 with PEEK sleeves) and tested using a master model. Implants were inserted through static guides, and the positional deviations were analyzed by comparing planned versus inserted implants using angular, coronal, and apical metrics. Statistical analysis showed significantly lower angular deviation in the PEEK sleeve group (57.2% lower than metal sleeves, p < 0.001), indicating greater precision. However, coronal deviation was significantly higher in the PEEK group (66.3% higher than metal sleeves, p = 0.006). No significant differences were found in apical deviation (p = 0.186). These findings suggest that the choice of sleeve material significantly impacts guided surgery accuracy, with PEEK sleeves offering superior angular precision but higher coronal deviation compared to metal sleeves.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256696"},"PeriodicalIF":0.0,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13313150/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148371590","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}
Brazilian dental journalPub Date : 2026-06-26eCollection Date: 2026-01-01DOI: 10.1590/0103-644020256744
Alice Moura Martins, Juliana de Medeiros Matos, Carolina Oliveira de Lima, Ana Flávia Almeida Barbosa, Emmanuel João Nogueira Leal da Silva, Tatiana Kelly da Silva Fidalgo
{"title":"Three-Dimensional Evaluation of Accessory Canals in Primary Maxillary Molars Using Micro-CT.","authors":"Alice Moura Martins, Juliana de Medeiros Matos, Carolina Oliveira de Lima, Ana Flávia Almeida Barbosa, Emmanuel João Nogueira Leal da Silva, Tatiana Kelly da Silva Fidalgo","doi":"10.1590/0103-644020256744","DOIUrl":"10.1590/0103-644020256744","url":null,"abstract":"<p><p>The objective of the present study was to characterize the internal anatomy of primary maxillary molars by evaluating the presence and distribution of accessory canals using micro-computed tomography (micro-CT). Seventeen primary maxillary molars from donors aged 2 to 8 years were scanned using micro-CT and reconstructed using NRecon software. Only teeth with at least two-thirds of the root structure preserved were included. Image analysis was performed with ImageJ, supplemented by CTan and CTvol software. Accessory canals were identified and counted at each root and categorized by root third. Statistical analyses, including Kruskal-Wallis and Mann-Whitney tests, were applied (p<0.05). A total of 47 roots were analyzed, with 68.08% exhibiting at least one accessory canal, totaling 96 canals. The apical third showed a higher number of accessory canals compared to cervical (p=0.01), with a mean of 0.87±1.05, accounting for 42.71% of all accessory canals identified. The middle third had a mean of 0.80±1.42, representing 39.58% of the total, while the cervical third exhibited the lowest mean (0.36±0.84), corresponding to 17.71% of the overall canals. Notably, 57.44% of the apical thirds had at least one accessory canal. Also, considering the presence of at least one accessory canal, the apical third also presented a higher prevalence (p<0.01). Accessory canals are highly prevalent in the apical third, highlighting the complexity of their internal anatomy and the importance of thorough endodontic management.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256744"},"PeriodicalIF":0.0,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13313148/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148371623","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}
Brazilian dental journalPub Date : 2026-05-01eCollection Date: 2026-01-01DOI: 10.1590/0103-644020266921
Carla Dias Matos, Maria Cândida Dourado Pacheco, Marcílio Alves Ferraz, João Gabriel Silva Souza, Fernanda Faot, Karolina Ladeira Felisberto, Jamil Awad Shibli, Rodrigo Villamarim Soares, Elton Gonçalves Zenóbio
{"title":"Clinical Parameters, Subgingival Microbiota, and MMP-8 Expression in Dental Implants and Homologous Teeth: Insights into Peri-Implant and Periodontal Health.","authors":"Carla Dias Matos, Maria Cândida Dourado Pacheco, Marcílio Alves Ferraz, João Gabriel Silva Souza, Fernanda Faot, Karolina Ladeira Felisberto, Jamil Awad Shibli, Rodrigo Villamarim Soares, Elton Gonçalves Zenóbio","doi":"10.1590/0103-644020266921","DOIUrl":"10.1590/0103-644020266921","url":null,"abstract":"<p><p>This study aimed to evaluate and compare clinical parameters, subgingival microbiota composition, and matrix metalloproteinase-8 (MMP-8) expression between dental implants and homologous teeth under healthy conditions, across distinct implant platform designs. A total of 47 patients contributed 79 implants and 79 homologous teeth. Clinical parameters, including probing depth (PD) and dimensions of keratinized mucosa (HKM, TKM, and WKM), were assessed. Subgingival biofilm samples underwent analysis by checkerboard DNA-DNA hybridization. Peri-implant and gingival crevicular fluid were collected for MMP-8 quantification. Results: Implants showed significantly increased PD and reduced keratinized mucosa dimensions compared with teeth. While overall microbial loads were comparable, the microbiological profiles differed: Actinomyces naeslundii I, Actinomyces oris, Prevotella intermedia, and Treponema denticola were detected at higher levels in teeth. Conversely, Prevotella nigrescens, Aggregatibacter actinomycetemcomitans A + B, and Selenomonas noxia were more prevalent in implants. High levels of Aggregatibacter actinomycetemcomitans A + B and Selenomonas noxia were observed in the External Hexagon (EH) group. Importantly, MMP-8 expression was approximately 29% higher in implants than in teeth (p<0.05), regardless of the implant platform design. MMP-8 levels correlated exclusively with crevicular fluid volume, but not with other clinical parameters. Dental implants differ from homologous teeth, presenting increased PD, reduced keratinized mucosa height (HKM), and distinct microbial compositions. Although total bacterial levels were similar, implants showed elevated MMP-8 levels compared with teeth, independent of implant platform, suggesting distinct biochemical activity even in clinically healthy sites.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256921"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13137926/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147848471","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}
Brazilian dental journalPub Date : 2026-05-01eCollection Date: 2026-01-01DOI: 10.1590/0103-644020266678
Maria Clara Furlaneto Heck, Thales Fabro Vanzela Sverzut, Alexandre Elias Trivellato, Cássio Edvard Sverzut
{"title":"Bimaxillary orthognathic surgery with mentoplasty and the use of porous polyethylene.","authors":"Maria Clara Furlaneto Heck, Thales Fabro Vanzela Sverzut, Alexandre Elias Trivellato, Cássio Edvard Sverzut","doi":"10.1590/0103-644020266678","DOIUrl":"10.1590/0103-644020266678","url":null,"abstract":"<p><p>A clinical case of a patient with class III dento-skeletal deformity accompanied by deficient zygomatic prominence. The treatment plan included bimaxillary orthognathic surgery with the placement of porous polyethylene based biomaterial and mentoplasty. In the postoperative period, physiotherapeutic tapes were implemented to control swelling and prevent bruising. The importance of emotional and mental support for a successful recovery is emphasized, as is the need for careful planning and a multidisciplinary approach to ensure the best possible outcome. Trust between surgeon and patient, along with an understanding of the complexity of rehabilitating not only their occlusion, but also their self-esteem, are crucial aspects to consider.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256678"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13137925/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147848444","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}
Brazilian dental journalPub Date : 2026-05-01eCollection Date: 2026-01-01DOI: 10.1590/0103-644020266778
Gabrielly Fernandes Machado, Daniele Morais Dias, Izabella Barbosa Fernandes, Kaio H Soares, Dhelfeson Willya Douglas de Oliveira, Patricia Furtado Gonçalves, Rodrigo Galo
{"title":"SDF vs resin sealants in preventing caries among high-risk children: a 2-year randomized trial.","authors":"Gabrielly Fernandes Machado, Daniele Morais Dias, Izabella Barbosa Fernandes, Kaio H Soares, Dhelfeson Willya Douglas de Oliveira, Patricia Furtado Gonçalves, Rodrigo Galo","doi":"10.1590/0103-644020266778","DOIUrl":"10.1590/0103-644020266778","url":null,"abstract":"<p><p>This study was a parallel, double-blind, randomized clinical trial that aimed to evaluate the effect of silver diamine fluoride (SDF) on the prevention of dental caries in the first permanent molars of children. A total of 68 students aged 6 to 9 years from a public school in Diamantina, Brazil, participated. All children were classified as high caries risk and had at least one fully erupted molar without restorations or sealants. The participants were randomly divided in a 1:1 ratio to receive either SDF or resin sealant. The main outcome was the incidence of new carious lesions after 24 months. Secondary outcomes included plaque accumulation, gingival bleeding, oral health-related quality of life (OHRQoL, CPQ-8-10), caregiver satisfaction, and discomfort reported by the children using the Wong-Baker scale. Sociodemographic and health information were collected using questionnaires, dietary diaries, and clinical examinations in accordance with ICDAS-II criteria. Statistical analysis was performed using SPSS 22.0, employing Chi-square, Mann-Whitney, and Wilcoxon tests. Most families had low incomes, and mothers were usually responsible for the children's daily care. After 2 years, the SDF group showed a significant reduction in plaque compared with baseline, whereas the sealant group showed a small, non-significant increase. No significant difference in gingival bleeding was observed between groups. Both interventions were well tolerated, although the dark staining of the SDF-treated teeth was clearly visible. In conclusion, SDF demonstrated good preventive performance and acceptance among children at.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256778"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13137927/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147848522","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":"Bleaching efficacy and enamel effects of tricalcium phosphate dentifrices containing charcoal or hydrogen peroxide.","authors":"Guilherme Silva Dos Santos, Amanda Ferreira Felix, Iago César Ribeiro Teles Matos, Matheus Kury, Vanessa Cavalli","doi":"10.1590/0103-644020256740","DOIUrl":"10.1590/0103-644020256740","url":null,"abstract":"<p><p>This study aimed to evaluate the bleaching efficacy and effects of dentifrices containing tricalcium phosphate (TCP) with activated charcoal (COAL) or hydrogen peroxide (HP) on dental enamel, compared with monofluorophosphate (MFP). Bovine enamel-dentin discs (n=10/groups) were stained and divided into TCP/HP, TCP/COAL, MFP/HP, MFP/COAL, and C (control - remineralizing solution) groups. Simulated toothbrushing (5.000 cycles) was performed, representing 6 months of clinical condition. The whiteness index (ΔWID), color changes (ΔE00, ΔL, Δa, and Δb), and surface microhardness and roughness (SMH, Ra) were evaluated after staining and treatments. Morphology and mineral content were analyzed under scanning electron microscopy and energy-dispersive X-ray spectroscopy. Data were analyzed using ANOVA/Tukey or Bonferroni tests (α=5%). MFP/COAL demonstrated significantly higher Δa and Δb than C. A statistically significant difference was observed in the TCP groups only for Δa. MFP-containing groups exhibited significantly higher ΔE00 than C. All groups showed negative ΔWID. MFP/COAL promoted greater darkening than TCP-containing and C groups (p<0.05). No statistical difference was detected among groups for ΔL, SMH, Ra, and %SHL (microhardness loss) (p>0.05). No morphological alterations were observed. TCP/HP showed lower mean Ca/P values. Therefore, dentifrices containing TCP associated with HP or COAL showed no bleaching efficacy and no harmful impact on enamel surface properties.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256740"},"PeriodicalIF":0.0,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13078688/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147694704","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}
Brazilian dental journalPub Date : 2026-04-10eCollection Date: 2026-01-01DOI: 10.1590/0103-644020266769
Bibiana Vogel Peres Riesgo, Luiza Ribeiro, Pablo Machado Soares, Luiza Freitas Brum Souza, Luiz Felipe Valandro, Gabriel Kalil Rocha Pereira, Liliana Gressler May
{"title":"Fatigue behavior and translucency of lithium disilicate ceramic: effect of glazing application.","authors":"Bibiana Vogel Peres Riesgo, Luiza Ribeiro, Pablo Machado Soares, Luiza Freitas Brum Souza, Luiz Felipe Valandro, Gabriel Kalil Rocha Pereira, Liliana Gressler May","doi":"10.1590/0103-644020266769","DOIUrl":"10.1590/0103-644020266769","url":null,"abstract":"<p><p>This study evaluated the effect of glaze application protocols on surface roughness, translucency, and fatigue behavior of a lithium disilicate-based ceramic (CEREC Tessera, Dentsply, Germany). Discs (A2 HT shade; Ø = 10 mm; thickness = 1 mm) were fabricated and randomly assigned to three groups (n = 7 for roughness and translucency; n = 12 for fatigue): CTRL (crystallization only), CCG (combined crystallization/glaze firing), and C+G (crystallization followed by additional glaze firing). Surface roughness (Ra, Rz) was measured using a contact profilometer, and translucency (TP00) was calculated from CIEDE2000 color coordinates. The ΔTP between groups was also determined. Specimens were cemented to glass fiber reinforced epoxy resin discs and subjected to cyclic fatigue testing under water immersion until failure. One-way ANOVA and Tukey's post-hoc tests were used for roughness and translucency, and Kaplan-Meier with Mantel-Cox for fatigue. One fractured specimen per group was examined by SEM to assess crack initiation and propagation. Glazing increased surface roughness, as CCG and C+G showed higher Ra and Rz values compared to CTRL (p > 0.05). TP00 ranged from 27.12 (C+G) to 28.33 (CCG), with no significant differences. ΔTP values (0.30 for CCG, 0.91 for C+G) were below the perceptibility threshold. Fatigue performance differed among groups (p < 0.05), with C+G showing higher mean cycles to failure compared to CTRL and CCG, although fatigue failure load did not differ significantly. SEM analysis revealed fractures initiating at the cementation surface under tensile stress and propagating toward the occlusal surface.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256769"},"PeriodicalIF":0.0,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13078685/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147694691","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}
Brazilian dental journalPub Date : 2026-04-10eCollection Date: 2026-01-01DOI: 10.1590/0103-644020256716
Luisa Gatti-Reis, Maisa Costa Tavares, Lucas Guimarães Abreu, Isabela Almeida Pordeus, Saul Martins Paiva
{"title":"Mind the gender gap: A Scoping Review of Inequalities in Dental Science and Leadership Short title: Mind the gender gap.","authors":"Luisa Gatti-Reis, Maisa Costa Tavares, Lucas Guimarães Abreu, Isabela Almeida Pordeus, Saul Martins Paiva","doi":"10.1590/0103-644020256716","DOIUrl":"10.1590/0103-644020256716","url":null,"abstract":"<p><p>This study aimed to carry out a scoping review to map the scope and nature of the literature on gender equity and discrimination in dental research and leadership, using an intersectional approach. The protocol of this scoping review is available online in the Open Science Framework platform. The literature search was carried out in February 2024. The terms of the search strategy encompassed three concept groups: gender inequality, the outcomes assessed, and dental science. PubMed, Scopus, Web of Science, and EMBASE were consulted. Two independent reviewers assessed the retrieved records. The initial search returned 2,322 references; after screening, 362 duplicates were removed, and 1,923 records were excluded because titles and abstracts did not meet the eligibility criteria. Inter-examiner agreement between reviewers was high (kappa = 0.931). For the updated search, 424 references were retrieved, and 52 duplicates were removed. After screening the titles and abstracts of the remaining 372 references, 11 were selected for full-text screening, of which 10 were included in the qualitative synthesis. Combining the two searches, 35 references were included in this scoping review. The studies included in this review were conducted by authors from multiple countries: Brazil, the United States, Canada, Saudi Arabia, Iran, Australia, and Austria, published between 1998 and 2024. The included studies showed persistent gender inequalities in dental research across different levels, particularly in leadership positions. There is a need to encourage further research on this topic under an intersectionality lens, on a broader scope of concepts, and to test interventions.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256716"},"PeriodicalIF":0.0,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13078687/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147694694","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}
Brazilian dental journalPub Date : 2026-04-10eCollection Date: 2026-01-01DOI: 10.1590/0103-644020267025
Rui Pereira da Costa, Igor Bassi Ferreira Petean, Guilherme Nilson Alves Dos Santos, Alice Corrêa Silva-Sousa, Rafael Verardino Camargo, Fabiane Carneiro Lopes-Olhê, Jardel Francisco Mazzi-Chaves, Renato Roperto, Yara Teresinha Corrêa Silva-Sousa, Manoel Damião Sousa-Neto
{"title":"Root Canal Filling of Teeth with Open Apex Using Different Techniques, Low-Temperature Gutta-Percha Points, and Bioceramic Sealers.","authors":"Rui Pereira da Costa, Igor Bassi Ferreira Petean, Guilherme Nilson Alves Dos Santos, Alice Corrêa Silva-Sousa, Rafael Verardino Camargo, Fabiane Carneiro Lopes-Olhê, Jardel Francisco Mazzi-Chaves, Renato Roperto, Yara Teresinha Corrêa Silva-Sousa, Manoel Damião Sousa-Neto","doi":"10.1590/0103-644020267025","DOIUrl":"10.1590/0103-644020267025","url":null,"abstract":"<p><p>To evaluate the impact of different root canal filling techniques on the push-out resistance to dislodgment of the filling material to dentin, the quality of the filling interface, and root temperature variation in teeth with open apex. Forty-eight human maxillary canines with open apex were divided into 4 experimental groups, according to the technique for root canal filling: Group I - apical barrier with MTA and backfill technique, Group II - apical filling with conventional points and continuous wave technique (4mm/200ºC), Group III - apical filling with low-fusion gutta-percha points and continuous wave technique (4mm/100ºC), Group IV - conventional single cone technique. Temperature changes on the outer surface of the root were measured in thirds during the filling. BS was evaluated using the push-out test. The adhesive interface was examined using scanning electron microscopy. Analysis of variance was used to analyze BS and temperature variation data, while the chi-square test was used to analyze failure type. The fit of the filling material to the dentin wall was evaluated using non-parametric Mann-Whitney and Kruskal-Wallis tests, followed by Dunn's test. The group using the MTA barrier (4.5±3.5) showed higher BS values compared to the conventional points (2.8±1.1), low-fusion points (3.1±2.1), and the single cone technique (2.7±2.3) (p<0.05). In terms of temperature variation, a greater temperature increase was observed in the low-fusion points group (p<0.05). MTA barrier exhibited the highest BS values and adhesive interface quality, while the continuous wave condensation technique, regardless of the type of gutta-percha point used, showed intermediate values compared to the single cone technique.</p>","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e257025"},"PeriodicalIF":0.0,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13078686/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147694642","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}