Brazilian dental journal最新文献_第4页

Hydrolysis of polydioxanone sutures in contact with hyaluronic acid of different concentrations: an in vitro study. 不同浓度透明质酸接触聚二氧环酮缝合线的水解：体外研究。

Brazilian dental journal Pub Date : 2026-03-23 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020266626

Juliano Bacon Modesto Setti, Ana Paula Christakis Costa, Flávia Pires Bretas Delaroli, Patrícia Moreira de Freitas, Victor Elias Arana-Chavez, Maristela Maia Lobo

{"title":"Hydrolysis of polydioxanone sutures in contact with hyaluronic acid of different concentrations: an in vitro study.","authors":"Juliano Bacon Modesto Setti, Ana Paula Christakis Costa, Flávia Pires Bretas Delaroli, Patrícia Moreira de Freitas, Victor Elias Arana-Chavez, Maristela Maia Lobo","doi":"10.1590/0103-644020266626","DOIUrl":"10.1590/0103-644020266626","url":null,"abstract":"Facial tissue repositioning with polydioxanone (PDO) thread is an effective alternative for stimulating collagen, treating sagging skin, and defining facial contours. When combined with hyaluronic acid (HA), further research is needed, as it has not been widely explored in the literature. This in vitro study investigated the hydrolysis pattern of spiculated PDO threads (I-Thread, 19G x 10 mm, USP-0) in contact with six different concentrations of HA (5, 12, 15, 17.5, 20, and 25 mg/mL). Ten cannulated PDO spiculated threads were fragmented into three and submerged in 1.0 mL of HA in test tubes at 37 °C, forming six groups: G1 (5 mg/mL NCTF 135 HA), G2 (12 mg/mL Volite), G3 (15 mg/mL Volbella), G4 (17.5 mg/mL Volift), G5 (20 mg/mL Voluma), and G6 (25 mg/mL Vollux). Optical and scanning electron microscopy and spectrophotometric degradation were performed at baseline, 1, 15, and 30 days. Statistical tests were applied at the 5% significance level. The results showed that the hydrolysis pattern of the threads varied with HA concentration. G1 (5 mg/mL NCTF 135 HA) maintained stability with lower absorbance values throughout the evaluation period (p < 0.013), suggesting less degradation. However, G6 (25 mg/mL Vollux) showed significantly higher absorbance and more pronounced structural changes (p < 0.001), indicating greater degradation. These findings suggest that HA concentration may influence the hydrolysis of PDO threads.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"37 ","pages":"e256626"},"PeriodicalIF":0.0,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13008402/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147518118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the screw-retained abutment material on the fatigue behavior of lithium disilicate restorations. 螺杆基台材料对二硅酸锂修复体疲劳性能的影响。

Brazilian dental journal Pub Date : 2026-02-02 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256936

Eduarda de Miranda Bohrer, Pablo Machado Soares, Maria Gabriela Packaeser, Lucas Saldanha da Rosa, João Paulo Mendes Tribst, Cornelis Johannes Kleverlaan, Luiz Felipe Valandro, Gabriel Kalil Rocha Pereira

{"title":"Effect of the screw-retained abutment material on the fatigue behavior of lithium disilicate restorations.","authors":"Eduarda de Miranda Bohrer, Pablo Machado Soares, Maria Gabriela Packaeser, Lucas Saldanha da Rosa, João Paulo Mendes Tribst, Cornelis Johannes Kleverlaan, Luiz Felipe Valandro, Gabriel Kalil Rocha Pereira","doi":"10.1590/0103-644020256936","DOIUrl":"10.1590/0103-644020256936","url":null,"abstract":"The aim of the study was to evaluate the effect of the screw-retained abutment material (zirconia (Yz), lithium disilicate (Ld), Polymer-infiltrated ceramic network (Picn), and Polietheretherketone (Peek)) on the fatigue behavior and stress distribution of lithium disilicate restorative material. Ld discs (Ø= 10 mm; thickness = 1 mm) were obtained and allocated into four groups according to the abutment material factor: Yz, Ld, Picn, and Peek (Ø= 10mm; thickness 3 mm). A screw access hole was made at the center of each abutment and filled with resin composite (thickness = 2 mm). The materials were adhesively bonded and tested under monotonic mechanical load (n= 3) and cyclic fatigue (n= 15; initial load: 200 N for 10,000 cycles; step size: 100 N/10,000 cycles; frequency: 20 Hz) until failure. Finite element and Scanning Electron Microscopy (SEM) analyses were also performed. The obtained data were analyzed by 1-Way ANOVA for monotonic (α=0.05) and Kaplan Meier and log-rank post-hoc for fatigue data tests. All groups presented a decrease in the fatigue failure load (FFL) when compared to the monotonic test. The abutment material affected the lithium disilicate restoration performance (p=.048; F= 4.134), since zirconia showed the highest FFL (p<.05), followed by Picn and Ld, which were similar to each other (p>.05). The lowest values of FFL were found for Peek (p<.05). The screw-retained abutment material influences the fatigue behavior of lithium disilicate restorations, being zirconia the most indicated material to enhance mechanical performance.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256936"},"PeriodicalIF":0.0,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12872105/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146121468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of F18 Bioactive Glass-Treated Gutta-Percha on Interaction with Endodontic Sealers. F18生物活性玻璃处理过的杜仲胶与根管密封剂相互作用的影响

Brazilian dental journal Pub Date : 2026-02-02 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256767

David Hernández Maldonado, José Leandro de Abreu Jampani, Airton Oliveira Santos-Júnior, Marina Trevelin Souza, Edgar Dutra Zanotto, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho

{"title":"Effect of F18 Bioactive Glass-Treated Gutta-Percha on Interaction with Endodontic Sealers.","authors":"David Hernández Maldonado, José Leandro de Abreu Jampani, Airton Oliveira Santos-Júnior, Marina Trevelin Souza, Edgar Dutra Zanotto, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho","doi":"10.1590/0103-644020256767","DOIUrl":"10.1590/0103-644020256767","url":null,"abstract":"This study evaluated the effect of F18 bioactive glass applied to gutta-percha by dip-coating or incorporation on surface bioactivity and bond strength to Bio-C Sealer (BCS) and AH Plus (AHP). Gutta-percha discs (n = 3 per group) were dip-coated with F18 bioactive glass at 2.5%, 5%, and 10% by weight and analyzed by SEM and EDS before and after 28 days of immersion in PBS. Uncoated gutta-percha served as the control for analyses. For the tensile bond strength test, twelve specimens per group (n = 12) were prepared using unmodified gutta-percha, 5% F18 dip-coated gutta-percha, or 2% F18-incorporated gutta-percha, each tested with BCS and AHP. Unmodified gutta-percha with each sealer served as the control. Bond strength was measured using a universal testing machine and analyzed by two-way ANOVA and Tukey's test (α = 0.05). After PBS immersion, the 5% and 10% dip-coated groups exhibited more pronounced F18 deposition and the formation of continuous bioactive surface layers, whereas the control group showed no such features. Regarding bond strength, the 5% F18 dip-coated gutta-percha showed higher values with BCS compared to the control (p < 0.05), and the 2% F18-incorporated gutta-percha also increased bond strength to BCS versus the control (p < 0.05). For AHP, 5% dip-coating reduced bond strength compared with the control (p < 0.05), whereas 2% incorporation did not differ (p > 0.05). F18 bioactive glass promoted surface mineralization of gutta-percha and improved its bond strength to Bio-C Sealer, whether applied by dip-coating or incorporation.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256767"},"PeriodicalIF":0.0,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12872106/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146120972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Histological evaluation of bone graft healing in maxillary sinus floor augmentation at two healing time points: a randomized clinical trial. 两个愈合时间点上颌窦底增强骨移植愈合的组织学评价：一项随机临床试验。

Brazilian dental journal Pub Date : 2026-02-02 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256560

Ricardo Pasquini Filho, Leandro Eduardo Klüppel, Rubens Moreno de Freitas, Luíz Antônio Violin, Silvio Roberto Consonni, Elcio Marcantonio Junior, Tatiana Miranda Deliberador

{"title":"Histological evaluation of bone graft healing in maxillary sinus floor augmentation at two healing time points: a randomized clinical trial.","authors":"Ricardo Pasquini Filho, Leandro Eduardo Klüppel, Rubens Moreno de Freitas, Luíz Antônio Violin, Silvio Roberto Consonni, Elcio Marcantonio Junior, Tatiana Miranda Deliberador","doi":"10.1590/0103-644020256560","DOIUrl":"10.1590/0103-644020256560","url":null,"abstract":"This study aims to compare the effects of two distinct healing periods (4 and 8 months) on bone formation after maxillary sinus floor elevation surgeries using sintered bovine bone grafts through histological and histomorphometric analyses. Using a split-mouth design, fourteen participants with bilateral edentulism in the posterior maxilla were included and randomized into two groups with 4 months (Test Group - TG) and 8 months (Control Group - CG) of healing periods. After the healing period, bone samples were collected and subjected to histomorphometric analysis to quantify the percentages of newly formed bone, residual bone substitute, and soft tissues. Comparison between the groups was performed using the paired Student's t-test (p<0.05). Twenty-eight maxillary sinus grafts were performed, and 54 dental implants were placed. Histological analysis revealed newly formed trabecular bone tissue in close contact with the bone substitute surface, with higher thickness observed in the CG. Collagen fibers in the CG exhibited greater birefringence, indicating increased thickness and organization compared to the TG. Histomorphometric analysis demonstrated a significant difference in the percentage of new bone formation between the CG (28.22 ± 6.29%) and TG (20.02 ± 5.97%; p<0,001), as well as in the percentage of residual bone substitute (TG: 39.12 ± 8.15%; CG: 31.65 ± 8.70%; p = 0.005). The proportion of soft tissues remained stable between groups. The 8-month healing period significantly increased bone tissue formation and maturation, suggesting that this interval optimizes the quality of grafted bone when using sintered bovine bone substitute.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256560"},"PeriodicalIF":0.0,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12872108/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146121486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cone beam computed tomography vs. Periapical Radiograph: Diagnostic accuracy in endo and periodontal lesions. 锥形束计算机断层扫描与根尖周x线片：诊断内牙和牙周病变的准确性。

Brazilian dental journal Pub Date : 2026-02-02 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256704

Maria Caroline Rios Piecha, Fernanda Geraldo Pappen, Fábio de Almeida Gomes, Camila Silveira Sfreddo, Natália Marcumini Pola

{"title":"Cone beam computed tomography vs. Periapical Radiograph: Diagnostic accuracy in endo and periodontal lesions.","authors":"Maria Caroline Rios Piecha, Fernanda Geraldo Pappen, Fábio de Almeida Gomes, Camila Silveira Sfreddo, Natália Marcumini Pola","doi":"10.1590/0103-644020256704","DOIUrl":"10.1590/0103-644020256704","url":null,"abstract":"Objectives: This study aimed to compare the diagnostic accuracy of dental specialists when assessing endodontic and periodontal lesions using periapical radiography (PR) alone and PR combined with cone-beam computed tomography (PR+CBCT).Methods: In this cross-sectional study, 30 endodontists and 30 periodontists evaluated ten clinical cases involving endodontic and periodontal tissues at two time points. The cases included vertical root fractures/fissures, endodontic perforation, persistent apical periodontitis, concomitant endo-periodontal injury, and localized periodontitis. Initially, participants reviewed clinical data and periapical radiographs for each case, formulating a diagnostic hypothesis via a structured questionnaire. Subsequently, CBCT images were introduced, and participants reassessed the images and reached a diagnosis again. The correct diagnosis, as established by the dentist responsible for each case, was included as one of the answer choices. Diagnostic accuracy for overall and specific lesion types after incorporating CBCT was analyzed using the McNemar test, with statistical significance set at 5%.Results: The overall percentage of correct diagnoses was 67.2% for PR+CBCT and 42.2% for PR. PR+CBCT provided accurate diagnoses in 58.8% of cases for both specialties. Regarding lesion type, PR+CBCT correctly identified a greater number of endo-periodontal lesions with and without root damage compared to PR alone.Conclusions: PR+CBCT significantly improves diagnostic accuracy for both endodontists and periodontists in cases involving both pulp and periodontal tissues.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256704"},"PeriodicalIF":0.0,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12872107/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146120893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antibiofilm activity of three-dimensional bacterial nanocellulose scaffolds containing antimicrobial agents. 含抗菌药物的三维细菌纳米纤维素支架的抗菌膜活性。

Brazilian dental journal Pub Date : 2026-01-30 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256820

Fernanda Keil Kressin, Isabela Aparecida Stahelin, Gilmar da Rosa Souza, Karina Cesca, Ricardo Ruiz Mazzon, Rayssa Sabino-Silva, Taynara Santos Goulart, Cleonice da Silveira Teixeira, Lucas da Fonseca Roberti Garcia, Josiane de Almeida

{"title":"Antibiofilm activity of three-dimensional bacterial nanocellulose scaffolds containing antimicrobial agents.","authors":"Fernanda Keil Kressin, Isabela Aparecida Stahelin, Gilmar da Rosa Souza, Karina Cesca, Ricardo Ruiz Mazzon, Rayssa Sabino-Silva, Taynara Santos Goulart, Cleonice da Silveira Teixeira, Lucas da Fonseca Roberti Garcia, Josiane de Almeida","doi":"10.1590/0103-644020256820","DOIUrl":"10.1590/0103-644020256820","url":null,"abstract":"Studies have focused on the use of alternative scaffolds for Regenerative Endodontic Procedures (REPs) because current materials still pose significant technical limitations. The purpose of this in vitro study was to evaluate the antibiofilm activity of three-dimensional bacterial nanocellulose (BNC) scaffolds incorporated with 0.12% chlorhexidine digluconate (BNC/CHX), 1% amoxicillin (BNC/AMOX), and 1% clindamycin (BNC/CLI). BNC scaffolds without an antimicrobial agent composed the control group (BNC/C). BNC scaffolds were immersed in a multispecies culture of E. faecalis, A. naeslundii, and S. sanguinis, which served as a substrate for biofilm growth. After 24 hours, 7, and 15 days, the mean value of colony-forming units (CFUs) was determined. Multispecies biofilm formation on the BNC scaffolds was assessed under Scanning Electron Microscopy (SEM) and Confocal Laser Scanning Microscopy (CLSM). For the biofilm cell viability test, the mean value of CFU/mL for each sample was determined, and the data were normalized by taking the base-10 logarithm (log10) of each CFU/mL value. Data were analyzed by Two-way ANOVA, followed by Bonferroni's post-hoc multiple comparisons (α=5%). In the 24h period, BNC/AMOX demonstrated significantly lower CFUs mean values than BNC/CHX, BNC/CLI, and BNC/C (p<0.05). CFUs mean values increased throughout the experimental periods, with no significant difference compared to the other groups (p>0.05). SEM and CLSM analysis revealed, in the initial periods, a lower number of microorganisms in the experimental groups compared to the control group. BNC scaffolds containing 1% amoxicillin and 1% clindamycin demonstrated greater antimicrobial activity against a multispecies biofilm within the initial periods of incubation.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256820"},"PeriodicalIF":0.0,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12858199/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146121795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of cytotoxicity and bleaching efficacy of gels with calcium polyphosphate and violet LED. 聚磷酸钙和紫色LED凝胶的细胞毒性和漂白效果评价。

Brazilian dental journal Pub Date : 2026-01-30 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256586

Larissa de Jesus Gomes, Rafael Antonio de Oliveira Ribeiro, Mariangela Ivette Guanipa Ortiz, Klaus Rischka, Carlos Alberto de Souza Costa, Débora Alves Nunes Leite Lima

{"title":"Evaluation of cytotoxicity and bleaching efficacy of gels with calcium polyphosphate and violet LED.","authors":"Larissa de Jesus Gomes, Rafael Antonio de Oliveira Ribeiro, Mariangela Ivette Guanipa Ortiz, Klaus Rischka, Carlos Alberto de Souza Costa, Débora Alves Nunes Leite Lima","doi":"10.1590/0103-644020256586","DOIUrl":"10.1590/0103-644020256586","url":null,"abstract":"To evaluate the whitening effect and cytotoxicity of low-concentration hydrogen peroxide (HP 10%) combined with calcium polyphosphate (CaPP) submicroparticles, irradiated or not with a violet LED (LEDv). Bovine tooth samples were divided into 6 groups (n=6): Control Group (no treatment); LED; Manipulated 10% HP (HP10%); Manipulated 10% HP + CaPP 1.5% w/t (HP10%_CaPP); Manipulated 10% HP + LED (HP10%+L); and Manipulated 10% HP + CaPP 1.5% w/t + LED (HP 10%_CaPP+L). The treatments were applied to the enamel of disks mounted in artificial pulp chambers. The whitening effect (ΔE00 and ΔWID) was measured, and the extracts were applied to MDPC-23 cells, assessing cell viability, oxidative stress, and HP diffusion. The data were analyzed using generalized linear models, and the Kruskal-Wallis/Dunn tests were applied for WID (a=5%). Cell viability was significantly reduced in all HP groups compared to controls (Control: 100.15 ± 1.71%; LED: 99.89 ± 2.43%), with the highest viability in HP10%_CaPP+L (72.17 ± 4.14%) and the lowest in HP10% (54.48 ± 1.72%). Oxidative stress was lowest in HP10%_CaPP+L (2.91 ± 0.17) and highest in HP10%+L (3.77 ± 0.15). HP diffusion was markedly reduced with CaPP (HP10%_CaPP+L: 2.93 ± 0.18 vs. HP10%: 4.24 ± 0.10). In terms of color analysis, the addition of CaPP did not alter the bleaching efficacy. The addition of CaPP to hydrogen peroxide, combined with violet LED, demonstrated effective bleaching action, positive indicators of cytocompatibility, increased cell viability, and reduced oxidative stress.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256586"},"PeriodicalIF":0.0,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12858197/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146121455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the Blooming Artifact Reduction filter on the detection of voids in root canal fillings using cone-beam computed tomography images. 利用锥形束计算机断层扫描图像检测根管填充物中的空隙。

Brazilian dental journal Pub Date : 2026-01-30 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256780

Airton Oliveira Santos-Junior, Rocharles Cavalcante Fontenele, Jáder Camilo Pinto, André Ferreira Leite, Fernanda Ferrari Esteves Torres, Karina Ines Medina Carita Tavares, Marcelo Gonçalves, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho

{"title":"Effect of the Blooming Artifact Reduction filter on the detection of voids in root canal fillings using cone-beam computed tomography images.","authors":"Airton Oliveira Santos-Junior, Rocharles Cavalcante Fontenele, Jáder Camilo Pinto, André Ferreira Leite, Fernanda Ferrari Esteves Torres, Karina Ines Medina Carita Tavares, Marcelo Gonçalves, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho","doi":"10.1590/0103-644020256780","DOIUrl":"10.1590/0103-644020256780","url":null,"abstract":"This study evaluated the effectiveness of the blooming artifact reduction (BAR) filter (e-Vol DX Software, CDT, Bauru, SP, Brazil) for detecting voids in root canals filled with various sealers, using two CBCT devices and micro-CT as a reference. Twenty mandibular incisors with long-oval root canals were filled with AH Plus Jet (AHPJ) or Bio-C Sealer (BCS). Each tooth was placed in the mandibular alveolar socket of a dry skull, covered with Mix-D material, and scanned with VeraView X800 and OP300 Maxio CBCT devices. Micro-CT images served as a reference. Three calibrated examiners assessed the CBCT scans, without and with the BAR filter (intensity level 1 for OP300 Maxio and level 3 for VeraView X800), for void detection using a 5-point scale. Diagnostic values (area under the receiver operating characteristic (ROC) curve, sensitivity, and specificity) were compared using multi-way analysis of variance (p=0.05). Intra- and inter-observer agreement was evaluated using the weighted Kappa index. For OP300, using BAR filter 1 significantly improved ROC curve values for detecting voids in the apical third with AHPJ and BCS (p<0.05). It also increased specificity for detecting voids in the apical third with AHPJ (p<0.05). For VeraView X800, the ROC curve and sensitivity values were unaffected (p>0.05), but using BAR filter 3 significantly enhanced specificity for detecting voids in the cervical/middle thirds with BCS (p<0.05). The diagnostic performance of the BAR filter is CBCT-device dependent. In OP300 scans, it enhances the detection of voids in the apical third with AHPJ and BCS. In VeraView X800 scans, it improves specificity for detecting voids in the cervical/middle thirds with BCS.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256780"},"PeriodicalIF":0.0,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12858198/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146121253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biological equivalence of additive manufacturing titanium vs conventional implants in peri-implantitis. 增材制造钛与传统种植体在种植体周围炎中的生物等效性。

Brazilian dental journal Pub Date : 2026-01-30 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256596

Pedro Henrique de Azambuja Carvalho, Ana Paula Farnezi Bassi, Vinícius Ferreira Bizelli, Julia Ferrazoli de Oliveira, Marisa Aparecida Cabrini Gabrielli, Valfrido Antonio Pereira-Filho

{"title":"Biological equivalence of additive manufacturing titanium vs conventional implants in peri-implantitis.","authors":"Pedro Henrique de Azambuja Carvalho, Ana Paula Farnezi Bassi, Vinícius Ferreira Bizelli, Julia Ferrazoli de Oliveira, Marisa Aparecida Cabrini Gabrielli, Valfrido Antonio Pereira-Filho","doi":"10.1590/0103-644020256596","DOIUrl":"10.1590/0103-644020256596","url":null,"abstract":"The global increase in the use of dental implants also increases treatment-related complications. Peri-implantitis is a matter of concern at this stage. This study aimed to compare the behavior of an additive manufacturing implant with commercially available implants with different surface treatments, exposed or not to a peri-implantitis challenge. Eighty implants with three different surfaces (Straumann BLT [A], Noble Biocare Active [B], Plenum 3D printed titanium implants test [C], and Plenum 3D printed titanium implants served as a negative control [D]) were placed into male minipigs (Minipig Br1) mandibles on both sides. Three months after implant placement, peri-implantitis was induced with cotton ligatures in one side of the mandible, and an intraosseous implant served as a control on both sides. Histometric analysis of marginal bone loss did not present a statistical difference between groups (p>0,05), but regarding Bone to Implant Contact (BIC), the B group presented the highest percentage. The additive manufacturing implant performed like commercially available implants in all the performed analyses, suggesting that additive manufacturing could be an alternative for the fabrication of osseointegrated implants.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256596"},"PeriodicalIF":0.0,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12858200/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146121841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in Composite Bioactive Scaffolds for Alveolar Bone Repair: Implications for Oral Surgery. 牙槽骨修复复合生物活性支架的研究进展：对口腔外科的启示。

Brazilian dental journal Pub Date : 2026-01-19 eCollection Date: 2026-01-01 DOI: 10.1590/0103-644020256728

Wilman Rante Marampa, Nina Djustiana, Renny Febrida

{"title":"Advances in Composite Bioactive Scaffolds for Alveolar Bone Repair: Implications for Oral Surgery.","authors":"Wilman Rante Marampa, Nina Djustiana, Renny Febrida","doi":"10.1590/0103-644020256728","DOIUrl":"10.1590/0103-644020256728","url":null,"abstract":"Craniofacial bone defects present a unique challenge due to the complex anatomical and functional demands of the region. Composite bioactive scaffolds have emerged as promising strategies for bone regeneration, combining the structural support of inorganic materials with the biological responsiveness of natural or synthetic polymers. This review discusses recent advancements in composite scaffolds tailored for alveolar and maxillofacial bone repair, with an emphasis on material selection, scaffold architecture, bioactivity, and therapeutic delivery capabilities. Key features, including porosity, mechanical strength, degradation rate, and anatomical adaptability, are evaluated for their clinical relevance. Furthermore, the roles of ion release, surface topography, and incorporation of growth factors or stem cells in modulating osteogenesis, angiogenesis, and immune responses are highlighted. Recent innovations also include dual-functional scaffolds that can promote bone formation while delivering antimicrobial or anti-inflammatory agents. Although most remain in preclinical stages, some composite scaffolds, particularly those based on hydroxyapatite, β-tricalcium phosphate (β-TCP), and bioactive glass, have progressed to clinical applications in dental implantology. The integration of biomimetic cues, 3D printing, and controlled drug release marks a significant step forward in personalized bone tissue engineering.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e256728"},"PeriodicalIF":0.0,"publicationDate":"2026-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12815456/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146014077","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}

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