Brazilian dental journal最新文献_第10页

Toothbrushing effects on the surface roughness and cement volume loss of bonded enamel-ceramic interface. 刷牙对粘结釉瓷界面表面粗糙度和粘结剂体积损失的影响

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305459

Luísa de Almeida Vieira Marins, Vitaliano Gomes Araújo-Neto, Beatriz Ometto Sahadi, Carolina Bosso André, Marcelo Giannini

{"title":"Toothbrushing effects on the surface roughness and cement volume loss of bonded enamel-ceramic interface.","authors":"Luísa de Almeida Vieira Marins, Vitaliano Gomes Araújo-Neto, Beatriz Ometto Sahadi, Carolina Bosso André, Marcelo Giannini","doi":"10.1590/0103-6440202305459","DOIUrl":"10.1590/0103-6440202305459","url":null,"abstract":"This study evaluated the effect of toothbrushing on enamel-cementing material-ceramic bonded interfaces, using different cementing materials.Materials and methods: Thirty enamel and thirty ceramic blocks were bonded with cementing materials to produce the samples that were bonded with three types of cementing materials: 1- RelyX Ultimate resin cement (REXU), 2- RelyX Unicem 2 self-adhesive resin cement (REU2) and 3- heated Z100 restorative composite (60°C). Bonded interfaces of the samples were toothbrushed and the surfaces of the 3 cementing materials were evaluated for roughness (RG, in µm), roughness profile (RP, in µm), and volume loss (VL, in µm3) (baseline and after 20,000 and 60,000 toothbrushing cycles). Data were evaluated by Generalized Linear Analysis (two factors: \"material\" and \"toothbrushing cycle\") and Bonferroni test (α=0.05).Results: REXU and Z100 exhibited lower RG than that presented by REU2, except after 60,000 toothbrushing cycles when only Z100 differed from REU2. The increase in toothbrushing cycles increased the RG and RP for all materials. REU2 also showed higher RP than those showed by REXU and Z100 when it was analyzed regarding the enamel. The VL of Z100 was the lowest with 20,000 toothbrushing cycles, regarding the enamel and ceramic. For 60,000 cycles, REXU showed the lowest VL regarding the ceramic, and REU2 had the highest VL regarding the enamel and ceramic.Conclusion: In general, REXU and Z100 showed the best results regarding the evaluations performed and the REU2 exhibited the highest RG, RP, and VL.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"63-71"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759952/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833952","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

Cross-cultural adaptation of the Digital Health Literacy Instrument (DHLI) for use on Brazilian adolescents. 对数字健康素养工具（DHLI）进行跨文化改编，用于巴西青少年。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305346

Mariane Carolina Faria Barbosa, Ana Luiza Peres Baldiotti, Náyra Santos Braga, Camila Takáo Lopes, Saul Martins Paiva, Ana Flávia Granville-Garcia, Fernanda de Morais Ferreira

{"title":"Cross-cultural adaptation of the Digital Health Literacy Instrument (DHLI) for use on Brazilian adolescents.","authors":"Mariane Carolina Faria Barbosa, Ana Luiza Peres Baldiotti, Náyra Santos Braga, Camila Takáo Lopes, Saul Martins Paiva, Ana Flávia Granville-Garcia, Fernanda de Morais Ferreira","doi":"10.1590/0103-6440202305346","DOIUrl":"10.1590/0103-6440202305346","url":null,"abstract":"The present study aimed to perform the cross-cultural adaptation of the Digital Health Literacy Instrument (DHLI) for native Brazilian Portuguese-speaking adolescents (DHLI-BrA). Cross-cultural adaptation consisted of the following steps: translation, assessment, and adjustments by the expert committee to ensure cultural equivalence; back-translation, and synthesis of back-translations. Cognitive testing was then performed in a pretest with adolescents using cognitive interviews with probing questions on the item's understanding interpretation and response options. Cronbach's alpha coefficient and McDonald's omega were used to estimate the instrument's reliability. Forty-two Brazilian adolescents participated in the study (mean age: 16.0 ± 2.0 years; range: 13 to 19 years). Items that were difficult to understand were adapted to the context of Brazilian adolescents. Cronbach's alpha coefficient and McDonald's omega for the 21 items of the DHLI-BrA were, respectively, 0.79 and 0.80. Cronbach's alpha coefficient for the subscales of the self-report instrument was 0.53-0.79 (range), demonstrating good reliability in the total instrument and moderate reliability in the subscales. This study provides the cross-cultural adapted version of the Digital Health Literacy Instrument (DHLI), which is an instrument for measuring digital Health literacy, for use in Brazilian adolescents (DHLI-BrA).","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"104-114"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759948/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833941","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

The potential of galactomannan from Caesalpinia ferrea on erosive dentin wear reduction in vitro. 铁杉半乳甘露聚糖在体外减少侵蚀性牙本质磨损的潜力

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305508

Cibele Sales Rabelo, Juliana Marinho Ramos de Oliveira, Isabelly de Carvalho Leal, Flávia de Miranda Leão Leite Costa, Nágila Maria Pontes Silva Ricardo, Vanara Florêncio Passos

{"title":"The potential of galactomannan from Caesalpinia ferrea on erosive dentin wear reduction in vitro.","authors":"Cibele Sales Rabelo, Juliana Marinho Ramos de Oliveira, Isabelly de Carvalho Leal, Flávia de Miranda Leão Leite Costa, Nágila Maria Pontes Silva Ricardo, Vanara Florêncio Passos","doi":"10.1590/0103-6440202305508","DOIUrl":"10.1590/0103-6440202305508","url":null,"abstract":"Gels containing juca seed galactomannan (JSG) were evaluated for their potential to prevent the progression of dentin erosive wear in an in vitro study with four experimental groups (n = 9). The treatments included distilled water (DW), 0.05% stannous fluoride (121 ppm F), and 0.5% or 1% JSG. The specimens underwent a cycle (3 times/day) consisting of immersion in 1% citric acid (5 minutes), treatment (5 minutes), and artificial saliva exposure (2 hours/overnight) for 5 days. Surface changes were assessed using mechanical profilometry (wear), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). The data were analyzed using ANOVA followed by Tukey's post-test (p < 0.05). The negative control group exhibited the highest wear (6.0 µm ± 3.5), significantly differing from the group treated with 0.05% stannous fluoride gel (p = 0.007), which showed less dentin loss. The groups treated with 0.5% and 1% JSG showed results similar to the negative control (p = 0.661; p = 0.212, respectively) and the stannous fluoride group (p = 0.103; p = 0.379, respectively). In the SEM images, the specimen treated with stannous fluoride showed obliterated tubules, while the JSG gels formed crystals on the dentin surface, as confirmed by the presence of oxygen and calcium in the EDS analysis. Although the JSG gels showed similar results to the stannous fluoride, did not exhibit superior efficacy at the tested concentrations.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"72-78"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759959/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833951","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

Long-term effect of firing protocols on surface roughness and flexural strength of lithium disilicate glass-ceramic. 烧制规程对二硅酸锂玻璃陶瓷表面粗糙度和抗弯强度的长期影响

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305496

Kaíssa da Cunha Lima, Rocio Geng Vivanco, Pedro Roberto Braz Rodrigues, Ana Lúcia Pereira Caetano, Fernanda de Carvalho Panzeri Pires-de-Souza

{"title":"Long-term effect of firing protocols on surface roughness and flexural strength of lithium disilicate glass-ceramic.","authors":"Kaíssa da Cunha Lima, Rocio Geng Vivanco, Pedro Roberto Braz Rodrigues, Ana Lúcia Pereira Caetano, Fernanda de Carvalho Panzeri Pires-de-Souza","doi":"10.1590/0103-6440202305496","DOIUrl":"10.1590/0103-6440202305496","url":null,"abstract":"This study evaluated the effect of different firing protocols on the surface roughness and flexural strength of CAD/CAM lithium disilicate glass-ceramic (LD) after aging methods. Forty-two LD bars of 16 x 4 x 2 mm (IPS e-max CAD, Ivoclar) were randomly separated into two groups according to firing protocols: Single firing-Staining, glazing, and crystallization in a single step; Multiple firings-Crystallization+First staining+Firing+Second staining+Firing+Glazing+Firing. After protocols, initial surface roughness readings were taken (Surfcorder SE1700, Kosakalab). Samples were then randomly separated into three groups (n=7) according to the aging methods they were submitted: Thermomechanical cycling (TMC, ER System, Erios, 1,200,000 cycles, 0.3 MPa, 2 Hz and 5°C/37°C/55°C, 30 s swell time); Simulated toothbrushing (STB, Pepsodent, MAVTEC, 73,000 cycles), and Control (no aging). Final surface roughness readings were done, and samples were submitted to a three-point bending test (OM100, Odeme Dental Research) and fractographic analysis by scanning electron microscopy (EVO-MA10, ZEISS). Data were analyzed (2-way ANOVA, (α=.05). There was no difference (p>.05) in the flexural strength between the firing protocols, regardless of the aging method. STB decreased the flexural strength of samples submitted to multiple firings, different from control (p<.05). Without aging (Control), before TMC, and after STB, LD had lower surface roughness when submitted to multiple firings than to single firing (p<.05). The firing protocols did not affect the flexural strength or the surface roughness of the lithium disilicate glass-ceramic, even after aging. However, toothbrushing negatively affected the flexural strength and smoothed the surface of the ceramic submitted to multiple firings.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"79-86"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759956/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833946","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

Immunoexpression of HSP27 does not seem to influence the prognosis of oral tongue squamous cell carcinoma. HSP27 的免疫表达似乎不会影响口腔舌鳞状细胞癌的预后。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305036

Ondina Karla Mousinho Rocha Torres, Luiz Arthur Barbosa da Silva, Roseana de Almeida Freitas, Éricka Janine Dantas da Silveira, Márcia Cristina da Costa Miguel

{"title":"Immunoexpression of HSP27 does not seem to influence the prognosis of oral tongue squamous cell carcinoma.","authors":"Ondina Karla Mousinho Rocha Torres, Luiz Arthur Barbosa da Silva, Roseana de Almeida Freitas, Éricka Janine Dantas da Silveira, Márcia Cristina da Costa Miguel","doi":"10.1590/0103-6440202305036","DOIUrl":"10.1590/0103-6440202305036","url":null,"abstract":"New methods of early detection and risk assessment have been studied aiming to predict the prognosis of patients and directing a specialized treatment of the oral tongue squamous cell carcinoma (OTSCC). In this context, several molecular biomarkers have been investigated for this purpose, and, among them, the heat shock protein 27 (HSP27) can be named. The study aimed to analyze whether heat shock protein 27 (HSP27) exerts any influence on OTSCC, correlating its immunoexpression with clinicopathological parameters, and patient survival. The sample comprised 55 OTSCC cases and 20 normal oral mucosa specimens. The malignancy grading systems proposed by the WHO in 2005, Brandwein-Gensler et al., and Almangush et al. were applied in a histomorphological study. HSP27 expressions were evaluated through the Immunoreactivity Score System (IRS). Significant values were considered at p <0.05 for all statistical tests. Higher IRS results were observed for normal oral mucosa specimens when compared to OTSCC cases (p <0.001). No significant associations between HSP27 immunostaining, the analyzed clinicopathological parameters and patient survival were observed. The results of the present study indicate lower HSP27 expression in OTSCC cases compared to normal oral mucosa specimens. Thus, HSP27 expression does not seem to influence patient prognosis.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"125-133"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759947/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833945","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

Shaping ability of a pediatric motor-driven instrumentation system in primary molar root canal prototypes. 小儿电机驱动器械系统在初级磨牙根管原型中的塑形能力。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305372

Bianca Katsumata de Souza, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte, Maria Aparecida Andrade Moreira Machado, Thais Marchini Oliveira, Natalino Lourenço Neto

{"title":"Shaping ability of a pediatric motor-driven instrumentation system in primary molar root canal prototypes.","authors":"Bianca Katsumata de Souza, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte, Maria Aparecida Andrade Moreira Machado, Thais Marchini Oliveira, Natalino Lourenço Neto","doi":"10.1590/0103-6440202305372","DOIUrl":"10.1590/0103-6440202305372","url":null,"abstract":"Evaluate the shaping ability and preparation time using a pediatric motor-driven rotary instrumentation compared to other systems in resin prototypes of primary molars.Methods: Thirty specimens were scanned in micro-CT and divided into three groups according to the instrumentation type: pediatric motor-driven Sequence baby File (SBF); conventional motor-driven (Sequence Rotary File - SRF); manual K file. Instrumentation time was timed. After preparation, the specimens were scanned again. The pre- and post-instrumentation images were superimposed to measure the amount of root canal deviation and the resin remnant thickness. ANOVA followed by the Tukey test analyzed the comparisons between groups (p<0.05).Results: No statistically significant differences occurred in root canal deviation among groups (p>0.05). There were statistically significant differences in the comparison among root thirds (p<0.001) but without significant differences in the interaction group vs. root third (p>0.05). Both motor-driven instrumentations showed statistically greater weariness than manual instrumentation (p<0.001), without significant significant differences between SBF and SRF. Motor-driven instrumentation had a shorter working time than manual instrumentation (p<0.001).Conclusion: Pediatric motor-driven instrumentation demonstrated good outcomes in relation to root canal deviation and amount of remnant structure, with shorter instrumentation time. SBF can be a suitable alternative for endodontic instrumentation in primary molars.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"36-42"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759958/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833950","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

Seeking treatment for traumatic dental injuries in schoolchildren: A multilevel analysis. 学龄儿童牙外伤就医情况：多层次分析

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305555

Veruska Medeiros Martins Bernardino, Larissa Chaves Morais de Lima, Luiza Jordânia Serafim de Araújo, Érick Tássio Barbosa Neves, Fernanda de Morais Ferreira, Ana Flávia Granville-Garcia

{"title":"Seeking treatment for traumatic dental injuries in schoolchildren: A multilevel analysis.","authors":"Veruska Medeiros Martins Bernardino, Larissa Chaves Morais de Lima, Luiza Jordânia Serafim de Araújo, Érick Tássio Barbosa Neves, Fernanda de Morais Ferreira, Ana Flávia Granville-Garcia","doi":"10.1590/0103-6440202305555","DOIUrl":"10.1590/0103-6440202305555","url":null,"abstract":"To investigate individual and contextual factors associated with seeking treatment for traumatic dental injuries. A cross-sectional study was conducted with 739 pairs of guardians and children. Guardians answered a questionnaire addressing sociodemographic characteristics, seeking treatment for a tooth injury in the child, and the Oral Health Literacy-Adult Questionnaire. Descriptive analysis and unadjusted and adjusted multilevel Poisson regression analysis (p<0.05). The prevalence of seeking treatment for traumatic dental injury was 44.7%. Sociodemographic variables associated were white skin of the child (PR = 1.30; 95% CI: 1.08-1.76), mother's age older than 35 years (PR = 1.70; 95% CI: 1.50-1.90), married parents (PR = 1.93; 95% CI: 1.70-2.23), guardians with more than eight years of schooling (PR = 2.00; 95% CI: 1.76-2.23), with adequate oral health literacy (PR = 3.33; 95% CI: 3.01-3.62) and the daily use of electronic devices by the child (PR = 1.26; 95% CI: 1.02-1.50). On the contextual level, attending a private school (PR = 1.77; 95% CI: 1.02-3.05) and the number of primary care units with oral health teams in the school district (PR = 1.78; 95% CI: 1.12-2.38) remained associated. Among the children who suffered TDI, adequate oral health literacy on the part of the parents stood out among the factors associated with seeking treatment.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"95-103"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759950/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833949","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

Unvaccinated periodontal patients with a history of COVID-19: clinical findings in a Dental School setting. 有 COVID-19 病史但未接种疫苗的牙周病患者：牙科学校的临床发现。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305284

Vanessa B Roza, Sabrina C Brasil, Luiza F Mello, Carina M Silva-Boghossian

{"title":"Unvaccinated periodontal patients with a history of COVID-19: clinical findings in a Dental School setting.","authors":"Vanessa B Roza, Sabrina C Brasil, Luiza F Mello, Carina M Silva-Boghossian","doi":"10.1590/0103-6440202305284","DOIUrl":"10.1590/0103-6440202305284","url":null,"abstract":"This study analyzed the periodontal clinical data of individuals with a history of COVID-19 treated in a dental school during the pandemic in 2021 before vaccination.Methods: This analysis included individuals older than 18 years with no history of systemic disorders other than systemic arterial hypertension. Individuals who had COVID-19 were classified according to the World Health Organization as asymptomatic, with mild, moderate, severe, or critical symptoms.Results: A total of 95 individuals were evaluated, which included 24 with a history of COVID-19. Seventeen percent had been asymptomatic, 21% had mild, 25% moderate, 21% severe, and 17% critical symptoms, including intubation. Individuals with no history of COVID-19 presented significantly lower measurements of probing depth (p=0.003; Mann-Whitney test) and clinical attachment level (p=0.002) compared to individuals with a history of COVID-19. A significant negative association was found between bleeding on probing and the severity of characteristics of COVID-19 (rho= -0.233; p=0.023). Conversely, positive associations between the values of probing depth (rho= 0.292; p=0.004) and mean clinical attachment level (rho= 0.300; p=0.003) and the characteristics of COVID-19 were found.Conclusions: The periodontal data shows that patients who had COVID-19 before vaccination may present a worse periodontal status when compared to patients in the same clinical setting with no history of COVID-19. However, a more extensive study should confirm it with more participants.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"134-139"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759953/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833953","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 Endo-Z bur or Bladesonic ultrasonic tip on the adaptation of filling material. A micro-CT study. Endo-Z 毛刺或 Bladesonic 超声波刀尖对充填材料适应性的影响。显微 CT 研究。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305474

Pedro Henrique Fiorin de Souza, Airton Oliveira Santos-Junior, Jáder Camilo Pinto, Karina Ines Medina Carita Tavares, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho

{"title":"Effect of Endo-Z bur or Bladesonic ultrasonic tip on the adaptation of filling material. A micro-CT study.","authors":"Pedro Henrique Fiorin de Souza, Airton Oliveira Santos-Junior, Jáder Camilo Pinto, Karina Ines Medina Carita Tavares, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho","doi":"10.1590/0103-6440202305474","DOIUrl":"10.1590/0103-6440202305474","url":null,"abstract":"This study aimed to evaluate the effect of apicoectomy performed with a bur or an ultrasonic tip on the adaptation of the filling material to root canal dentin. Twenty human mandibular incisors were selected and prepared with a ProDesign Logic system up to diameter 40/.05. The root canals were filled with Bio-C Sealer (Angelus, PR, Brazil) using the single cone technique and were stored at 37ºC and 95% relative humidity for 7 days. After this period, the apicoectomy of the 3 millimeters of the root apex was performed using Endo-Z bur (Dentsply Sirona) or Bladesonic ultrasonic tip (Helse Ultrasonic, Santa Rosa de Viterbo, Brazil) (n=10). The specimens were scanned by micro-computed tomography (micro-CT; SkyScan 1176) with a voxel size of 8.74 µm after obturation and after apicoectomy. The percentage of voids at the interface between the filling material and the root canal wall was evaluated in the apical 4 mm of the root after apicoectomy, besides the time cutting to both devices. The data obtained were submitted to paired and unpaired t-tests (α = 0.05). Endo-Z and Bladesonic increased the percentage of voids between the filling material and the dentin after apicectomy (p<0.05), and they were similar (p>0.05). Endo-Z has a shorter time to perform apicoectomy compared to Bladesonic (p<0.05). Apicectomies with Endo-Z or Bladesonic could harm the material/dentin interface, while the Endo-Z bur was faster than the Bladesonic ultrasonic tip.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"29-35"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759957/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833942","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

Fluoride-modified implant surfaces improves osseointegration in the tibias of rats with induced diabetes. 氟改性种植体表面可改善糖尿病大鼠胫骨的骨结合。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305439

Guilherme José Pimentel Lopes de Oliveira, Lucas Amaral Fontanari, João Antônio Chaves de Souza, Rubens Spin-Neto, Carlos Nelson Elias, Elcio Marcantonio Junior, Silvana Regina Perez Orrico

{"title":"Fluoride-modified implant surfaces improves osseointegration in the tibias of rats with induced diabetes.","authors":"Guilherme José Pimentel Lopes de Oliveira, Lucas Amaral Fontanari, João Antônio Chaves de Souza, Rubens Spin-Neto, Carlos Nelson Elias, Elcio Marcantonio Junior, Silvana Regina Perez Orrico","doi":"10.1590/0103-6440202305439","DOIUrl":"10.1590/0103-6440202305439","url":null,"abstract":"This study evaluated the influence of a fluoride-modified titanium surface on osseointegration in rats with induced diabetes. One hundred and eighty rats were randomly allocated into 3 groups with 60 animals each: Control group (C): Animals without diabetes; Diabetes Group (D): Animals with uncontrolled induced diabetes; Controlled Diabetes Group (CD): Animals with diabetes induced controlled by the insulin administration. Diabetes was induced by streptozotocin injection. Each animal received 2 implants in the proximal tibial metaphysis, one with the machined surface (M) and the other one with a fluoride-modified titanium surface (F), after 4 weeks of induction of diabetes. The animals were submitted to euthanasia 2, 4, and 6 weeks after the implant placement (n = 20 animals/group). The osseointegration was evaluated by the implant removal torque test and the histometric analysis of the non-decalcified histological sections: 1) Contact bone/implant (%BIC); 2) Bone tissue area between implant threads (%BBT). Implants with F surface showed a higher removal torque than implants with surface M in all groups. There was no difference in %BIC between the groups regardless of the surface used. The F surface showed a tendency to present higher %BBT values for the 3 evaluation periods in the D group. The fluoride-modified implant surface has no impact on the %BIC and %BBT. However, the fluoride-modified implant surface increases the locking of the implants with the bone. The hyperglycemia was associated with lower removal torque values despite the surfaces of the implant used.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"43-52"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759961/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833944","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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