Frontiers in Dentistry最新文献_第7页

Effect of Different Mouthwashes on Stain Susceptibility of Resin Composite in Contact with Beverages. 不同漱口水对树脂复合材料与饮料接触染色敏感性的影响。

Frontiers in Dentistry Pub Date : 2023-09-20 eCollection Date: 2023-01-01 DOI: 10.18502/fid.v20i35.13663

Haleh Valizadeh Haghi, Shadieh Molaee, Parinaz Oliyanasab, Khatereh Isazadehfar

{"title":"Effect of Different Mouthwashes on Stain Susceptibility of Resin Composite in Contact with Beverages.","authors":"Haleh Valizadeh Haghi, Shadieh Molaee, Parinaz Oliyanasab, Khatereh Isazadehfar","doi":"10.18502/fid.v20i35.13663","DOIUrl":"10.18502/fid.v20i35.13663","url":null,"abstract":"Objectives: This study aimed to investigate the effect of common mouthwashes on the color change of a nanohybrid composite and its further stain susceptibility to Coke and coffee. Materials and Methods: One hundred and fifty composite discs were prepared and initial color values were measured using a spectrophotometer. The specimens were grouped based on the 24h exposure to common mouthwashes including Listerine, chlorhexidine, two types of fluoride mouthwashes (alcohol free and alcohol containing) as well as distilled water as control (N=30). The color change (ΔE1) values were calculated to show the amount of color change caused by mouthwashes. Subsequently, the specimens in each group were subdivided and immersed in the secondary colorant solution (coffee, Coke and, distilled water) for seven days. The total color change (ΔE total) values were obtained to show the stain susceptibility. Statistical analysis was conducted using ANOVA and Tukey's post hoc test. A P-value less than 0.05 was considered statistically significant. Results: The calculated ΔE1 of resin composite was significantly higher for all mouthwash groups than that of the control group; however, all were in the clinically acceptable range. Exposure to Listerine and distilled water caused more staining effects compared to other mouthwashes after immersion in secondary colorant solutions. Regardless of primary mouthwash type, coffee and distilled water caused the highest and the least total discolorations, respectively (P<0.001). Conclusion: All mouthwashes caused a clinically acceptable color change in resin composite; however, further stain susceptibility depended on the mouthwashes but was not higher than distilled water.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"35"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b8/ad/FID-20-35.PMC10591021.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50157474","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

Comparison of the Physical Properties of Three Resin-Based Root Canal Sealers: An In-Vitro Study. 三种树脂基根管封闭剂物理性能的比较:体外研究。

Frontiers in Dentistry Pub Date : 2023-09-19 eCollection Date: 2023-01-01 DOI: 10.18502/fid.v20i34.13651

Pegah Sarraf, Sholeh Ghabraei, Zahra Mohammadi, Faranak Noori, Nazanin Chitsaz

{"title":"Comparison of the Physical Properties of Three Resin-Based Root Canal Sealers: An In-Vitro Study.","authors":"Pegah Sarraf, Sholeh Ghabraei, Zahra Mohammadi, Faranak Noori, Nazanin Chitsaz","doi":"10.18502/fid.v20i34.13651","DOIUrl":"10.18502/fid.v20i34.13651","url":null,"abstract":"Objectives: This in-vitro study aimed to evaluate the physical properties of three resin-based root canal sealers, including BETA-RCS, AH26, and Adseal. Materials and Methods: Flowability, film-thickness, solubility, and radiopacity of BETA-RCS, AH26, and Adseal sealers were evaluated according to ISO 6876/2012 specifications. Three samples of each sealer were used to test each of the properties. Results: The results revealed that the flow rate (mm) of BETA-RCS, Adseal, and AH26 were 23.06±1.58, 22.5±4.23, and 21.85±1.71, respectively. Film-thickness values (µm) for BETA-RCS, Adseal, and AH26 sealers were 52.33±2.51, 18.66±0.57, and 52±2, respectively. No significant difference was observed regarding film-thickness between AH26 and BETA-RCS (P>0.05), while Adseal showed significantly lower film-thickness (P˂0.05). The highest and lowest solubility were related to BETA-RCS and Adseal, respectively. However, all sealers had acceptable solubility and radiopacity. Conclusion: The findings of the current study suggested that all three root canal sealers including BETA-RCS, AH26, and Adseal had similar properties based on ISO 6876 standard criteria. As such, they could be viable choices for facilitating effective root canal procedures. Further long-term clinical studies are warranted to assess their performance and success rates in actual endodontic cases.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"34"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/71/f1/FID-20-34.PMC10591020.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50157473","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

Nickel and Chromium Ion Release from Orthodontic Wires Subjected to Various Drinks and Distilled Water. 不同饮料和蒸馏水对正畸金属丝中镍和铬离子释放的影响。

Frontiers in Dentistry Pub Date : 2023-09-18 eCollection Date: 2023-01-01 DOI: 10.18502/fid.v20i33.13639

Seyyed Amirhossein Mirhashemi, Sahar Jahangiri, Mina Mahdavi Moghaddam, Rashin Bahrami

{"title":"Nickel and Chromium Ion Release from Orthodontic Wires Subjected to Various Drinks and Distilled Water.","authors":"Seyyed Amirhossein Mirhashemi, Sahar Jahangiri, Mina Mahdavi Moghaddam, Rashin Bahrami","doi":"10.18502/fid.v20i33.13639","DOIUrl":"10.18502/fid.v20i33.13639","url":null,"abstract":"Objectives: The aim of this in vitro study was to assess the quantity of nickel and chromium ions released from orthodontic wires when subjected to various beverage solutions and distilled water. Materials and Methods: Orthodontic appliances composed of five brackets, one band and 0.016-inch stainless steel and nickel titanium wires were immersed in Coke, tea, coffee and distilled water. The samples were incubated at 37°C for 1 hour, 6 hours, 24 hours, and one week. There was a total of 120 appliances divided into 24 groups (n=5 in each group). Atomic absorption spectroscopy was used to examine the amount of released ions. Two-way and one-way ANOVA followed by Tukey test were used for statistical analysis and P<0.05 was considered significant. Results: The release of nickel ions from both wires was highest in Coke and lowest in distilled water at all time points. Coffee and tea demonstrated values in-between these two limits. Similarly, chromium ion release from both wires was highest in Coke at all time-points compared to all other solutions (P<0.05). None of the other tested drinks showed significant differences in chromium ion release compared to distilled water. Conclusion: Restricting the intake of acidic drinks, particularly carbonated beverages like Coke, plays a critical role in safeguarding orthodontic wire components. Educating patients and providing dietary guidelines are essential for maximizing treatment effectiveness. Further research is required to investigate additional factors impacting ion release and devising methods to mitigate potential harm.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"33"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6d/ce/FID-20-33.PMC10591019.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50157476","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 Effectiveness of Cognitive-Behavioral Intervention on Dental Anxiety during Pulpotomy in 7-10 Year-Old Children: A Clinical Trial. 认知行为干预对7-10岁儿童牙髓切除术期间牙齿焦虑的有效性：一项临床试验。

Frontiers in Dentistry Pub Date : 2023-08-26 eCollection Date: 2023-01-01 DOI: 10.18502/fid.v20i32.13588

Marzieh Shokravi, Mohammadreza Maaboudi, Ali Amiri, Monirsadat Mirzadeh, Razieh Jabbarian

{"title":"The Effectiveness of Cognitive-Behavioral Intervention on Dental Anxiety during Pulpotomy in 7-10 Year-Old Children: A Clinical Trial.","authors":"Marzieh Shokravi, Mohammadreza Maaboudi, Ali Amiri, Monirsadat Mirzadeh, Razieh Jabbarian","doi":"10.18502/fid.v20i32.13588","DOIUrl":"10.18502/fid.v20i32.13588","url":null,"abstract":"Objectives: Dental anxiety is a common phenomenon experienced by children in the dental setting. However, there is limited research on the effectiveness of cognitive-behavioral interventions in managing this anxiety. Therefore, the aim of this study was to evaluate the impact of a cognitive-behavioral psychologic intervention on dental anxiety in children. Materials and Methods: A total of thirty children, aged 7-10 years, underwent prophylaxis and fluoride therapy. The baseline anxiety levels of the children were determined using the Modified Child Dental Anxiety Scale (MCDAS). The intervention group (N=15) received two 30-minute sessions of cognitive-behavioral exercises. Additionally, a short film demonstrating a cooperative child undergoing pulpotomy was created and parents were instructed to show it to their children at home. During the treatment session, the exercises were reinforced at each step, and the MCDAS questionnaire was administered again. The children's behavior was also assessed using the Venham Clinical Cooperation Scale. Independent t-test, Mann-Whitney, chi-square, and Pearson's correlation coefficient were used for statistical analysis and P<0.05 was considered statistically significant. Results: Postoperatively, the MCDAS score in the intervention group was significantly lower compared to the control group. Notably, the intervention group demonstrated a downward trend in anxiety scores, while the control group showed an increase (P<0.001). Conclusion: Cognitive-behavioral interventions were found to be successful in decreasing dental anxiety in children undergoing pulpotomy. These interventions can be successfully implemented in clinical settings.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"32"},"PeriodicalIF":0.0,"publicationDate":"2023-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b4/63/FID-20-32.PMC10505444.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10303002","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

Management of Adenomatoid Odontogenic Tumor in a Pediatric Patient with Preservation of an Associated Impacted Tooth: A Combined Surgical and Orthodontic Approach. 保留相关阻牙的儿童腺样牙源性肿瘤的治疗：一种外科和正畸联合方法。

Frontiers in Dentistry Pub Date : 2023-08-09 eCollection Date: 2023-01-01 DOI: 10.18502/fid.v20i31.13393

Saumya Taneja, Anuj Jain

引用次数: 0

A Comparative Analysis of Staining Effects on Translucency in Two Transparent Retainers Exposed to Various Cleansers. 不同清洁剂对两种透明保持器半透明性染色效果的比较分析。

Frontiers in Dentistry Pub Date : 2023-08-06 eCollection Date: 2023-01-01 DOI: 10.18502/fid.v20i30.13348

Seyyed Amir Hossein Mirhashemi, Sarina Nafisi, Rashin Bahrami

{"title":"A Comparative Analysis of Staining Effects on Translucency in Two Transparent Retainers Exposed to Various Cleansers.","authors":"Seyyed Amir Hossein Mirhashemi, Sarina Nafisi, Rashin Bahrami","doi":"10.18502/fid.v20i30.13348","DOIUrl":"10.18502/fid.v20i30.13348","url":null,"abstract":"Objectives: Due to their aesthetic appeal and translucent properties, clear thermoplastic retainers have become increasingly popular. However, ensuring their proper maintenance and cleaning is a significant challenge. It is essential to prevent any negative impact of cleaning solutions on the translucency and color consistency of retainers. Therefore, this study aimed to assess the effect of different cleaning solutions on the light transmission (translucency) rate of two distinct types of clear thermoplastic sheets. Materials and Methods: Two different clear thermoplastic sheets (Erkodent, Shodental), and five disinfectant solutions including chlorhexidine, Listerine, hydrogen peroxide, GUM whitening, and acid acetic served as the study materials and distilled water was used as control. The samples in each group (N=12) were immersed in the respective solutions for 15 minutes, twice a week and their light transmittance was measured using spectrophotometry after one and three months. Statistical analysis was conducted using two-way analysis of variance, with the significance level set at P<0.05 Results: Light transmittance decreased from baseline to 3 months for all study groups. After three months, the lowest translucency was related to retainers manufactured with Erkodent sheets, cleaned with GUM whitening (74.11±10.72%). The highest translucency after this period was found in retainers prepared with Shodental sheets immersed in Listerine mouthwash (88±1.55%). Only retainers treated with hydrogen peroxide showed significant difference between the thermoplastic sheets, which was higher in Erkodent (P<0.05). Conclusion: Our findings indicated that among the studied solutions, cleaning translucent retainers with Listerine mouthwash twice a week has the least effect on light transmission.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"30"},"PeriodicalIF":0.0,"publicationDate":"2023-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/2d/2e/FID-20-30.PMC10505443.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10303001","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 Effect of Different Soft Drinks on the Force Degradation of Conventional and Memory Orthodontic Elastic Chains: An In-Vitro Study. 不同软饮料对常规和记忆性正畸弹性链力降解的影响：体外研究。

Frontiers in Dentistry Pub Date : 2023-08-06 eCollection Date: 2023-01-01 DOI: 10.18502/fid.v20i29.13347

Mahboobe Dehghani, Neda Alavian, Niloofar Noori, Maryam Omidkhoda

{"title":"The Effect of Different Soft Drinks on the Force Degradation of Conventional and Memory Orthodontic Elastic Chains: An In-Vitro Study.","authors":"Mahboobe Dehghani, Neda Alavian, Niloofar Noori, Maryam Omidkhoda","doi":"10.18502/fid.v20i29.13347","DOIUrl":"10.18502/fid.v20i29.13347","url":null,"abstract":"Objectives: The aim of this study was to assess how different soft drinks affect the deterioration of conventional and memory orthodontic elastomeric chains. Materials and Methods: We used 500 five-loop segments of elastomeric chains, which were divided into two equal groups of conventional and memory chains. The samples were kept in artificial saliva during the study period. Each group was further divided into 5 subgroups consisting of artificial saliva (controls), Coca-Cola®, non-alcoholic beer (ISTAK®), and carbonated and non-carbonated yoghurt-based drinks (Alis®). Treatment with the soft drinks consisted of immersion in the test liquids twice a day for 3 minutes each time. Force measurements were taken on days 1, 7, 14, 21, and 28. Data were analyzed using One- and three-way ANOVA tests, and independent t-test, with a significance level of 5%. Results: The mean initial force for the conventional and memory elastomeric chains was 3.34±0.112N and 2.49±0.209N, respectively. Conventional chains showed significantly greater degradation than memory chains (P<0.01). Soft drinks had a significant impact on force degradation for both types of chains at all time points (P<0.01). Coca-Cola® had the highest level of force degradation, while non-carbonated yoghurt-based drinks had the lowest (P<0.01). Conclusion: Based on the findings of this study, it is recommended that orthodontic patients choose non-carbonated yoghurt-based drinks during their treatment. Memory elastomeric chains may be more suitable for patients who consume large amounts of carbonated soft drinks, due to their lower amount of force degradation compared to conventional chains.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"29"},"PeriodicalIF":0.0,"publicationDate":"2023-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/9f/cd/FID-20-29.PMC10505446.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10303004","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 Cryotherapy on Fracture Resistance of Neoniti Rotary Instruments. 冷冻治疗对Neoniti旋转器械抗骨折性能的影响。

Frontiers in Dentistry Pub Date : 2023-08-05 eCollection Date: 2023-01-01 DOI: 10.18502/fid.v20i28.13346

Firouz Zadfatah, Saeedeh Galledar, Shahram Pourasgar, Alireza Fathiazar

{"title":"Effect of Cryotherapy on Fracture Resistance of Neoniti Rotary Instruments.","authors":"Firouz Zadfatah, Saeedeh Galledar, Shahram Pourasgar, Alireza Fathiazar","doi":"10.18502/fid.v20i28.13346","DOIUrl":"10.18502/fid.v20i28.13346","url":null,"abstract":"Objectives: Nickel-titanium (NiTi) rotary files were introduced to optimize root canal instrumentation in endodontic treatment. However, despite the numerous advantages of NiTi instruments, they may unexpectedly break during clinical use, resulting in obstruction of the root canal system. This investigation aimed to assess the effect of cryotherapy on fracture resistance of Neoniti rotary files. Materials and Methods: This in vitro, study was conducted on 20 Neoniti rotary files with #35 tip size and 6% taper in two groups with and without cryogenic treatment (N=10). For cryogenic treatment, the files were immersed in liquid nitrogen at -196°C for 24 hours. Next, the Neoniti files in both groups were subjected to cyclic fatigue testing in a hand-piece operating at 500 rpm with 20 N/cm torque. The files were rotated until fracture and the fracture time as well as the number of cycles to fracture were recorded for each file. The two groups were compared by independent t-test at 0.05 level of significance. Results: The number of cycles to fracture was 235700±50649.22 in the control and 280600±22979.21 in the cryotherapy group. The mean fracture time was 471.40±101.29 and 561.20±45.958 seconds in the control and cryotherapy groups, respectively. Significant differences in both variables were noted between the two groups (P<0.05). Conclusion: Based on our findings, utilizing cryogenic treatment may enhance the fracture resistance of rotary instruments, making it a beneficial practice for dental clinicians to adopt. By using cryogenically treated rotary instruments, clinicians can potentially reduce the risk of file fracture during dental procedures.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"28"},"PeriodicalIF":0.0,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/5e/39/FID-20-28.PMC10505447.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10303000","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

Age Estimation Using the Tooth Coronal Index on Mandibular First Premolars on Digital Panoramic Radiographs in an Indian Population. 印度人口下颌第一前磨牙冠状指数在数字全景x线片上的年龄估计。

Frontiers in Dentistry Pub Date : 2023-01-01 DOI: 10.18502/fid.v20i6.12465

Sneha Sharma, Freny Karjodkar, Kaustubh Sansare, Archana Mehra, Ankit Sharma, Mohd Saalim

{"title":"Age Estimation Using the Tooth Coronal Index on Mandibular First Premolars on Digital Panoramic Radiographs in an Indian Population.","authors":"Sneha Sharma, Freny Karjodkar, Kaustubh Sansare, Archana Mehra, Ankit Sharma, Mohd Saalim","doi":"10.18502/fid.v20i6.12465","DOIUrl":"https://doi.org/10.18502/fid.v20i6.12465","url":null,"abstract":"Objectives: Age estimation is a crucial aspect of forensic odontology, and the Tooth Coronal Index (TCI) has been widely used for forensic purposes in determining age. The aim of this research was to evaluate the effectiveness of TCI in age estimation. Materials and Methods: A retrospective study was conducted, and TCI was calculated for the mandibular first premolar in 700 digital panoramic radiographs. Age was divided into five groups: 20-30 years, 31-40 years, 41-50 years, 51-60 years, and >61 years. Bivariate correlation was used to establish the relationship between TCI and age. Linear regression was calculated for the different age groups and genders. Inter-observer reliability and agreement were assessed using one-way ANOVA. P-values less than 0.05 were considered statistically significant. Results: Comparison of the mean difference from actual age showed underestimation in males aged 20-30 years and overestimation in males over 60 years of age. The least difference between actual and calculated age was found in females aged 31-40 years. Inter-age comparison using ANOVA for females demonstrated a statistically highly significant difference from actual age in all age groups (P<0.01), with the highest mean in females aged 51-60 years and the lowest in females aged 31-40 years. Inter-group comparison of mean TCI revealed statistically non-significant differences in males and statistically highly significant differences in females (P<0.01). Conclusion: Age estimation using TCI on mandibular first premolars can be recommended as an easy, non-invasive, and less time-consuming method. This study suggests that regression formulas were more accurate for males aged 31-40 years.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"6"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fd/c2/FID-20-6.PMC10258396.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9629713","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: 1

Comparative Effects of Three Bleaching Techniques on Tooth Discoloration Caused by Tea. 三种漂白方法对茶致牙齿变色的比较效果。

Frontiers in Dentistry Pub Date : 2023-01-01 DOI: 10.18502/fid.v20i25.13343

Narges Panahandeh, Shervin Mohammadkhani, Shervin Sedighi, Sogol Nejadkarimi, Amir Ghasemi

{"title":"Comparative Effects of Three Bleaching Techniques on Tooth Discoloration Caused by Tea.","authors":"Narges Panahandeh, Shervin Mohammadkhani, Shervin Sedighi, Sogol Nejadkarimi, Amir Ghasemi","doi":"10.18502/fid.v20i25.13343","DOIUrl":"https://doi.org/10.18502/fid.v20i25.13343","url":null,"abstract":"Objectives: This study aimed to investigate the impact of three different bleaching protocols on tooth discoloration caused by tea. Materials and Methods: Forty extracted sound premolars were cleaned, disinfected, and their initial color parameters were measured (T1). The teeth were then immersed in boiled tea solution for 24 hours, and their color was measured again (T2). The samples were divided into four groups of 10 teeth each. Group A was treated with an in-office bleaching gel followed by 30 seconds of light curing. Groups B, C, and D were respectively treated with 0.24M oxalic acid followed by bleaching gel, 5.25% sodium hypochlorite followed by bleaching gel, and a combination of 0.24M oxalic acid, 5.25% sodium hypochlorite, and bleaching gel. The color was measured once more after the interventions (T3). Data were analyzed using two-way repeated measures ANOVA, paired sample t-test, and Tukey's test. Results: The mean color change (∆E2) between T2 and T3 was significantly higher in group D compared to group A (P<0.05). However, there was no significant difference in color change between groups A, B, and C. Additionally, there was no significant difference in color change between groups B, C, and D. The groups also showed significant differences in ∆L (P=0.007), with the only significant difference found between groups B and C (P=0.001). Conclusion: The combined use of sodium hypochlorite and oxalic acid followed by in-office bleaching gel is more effective than bleaching alone in correcting tooth discoloration caused by tea. This protocol can further reduce yellow coloration.","PeriodicalId":12445,"journal":{"name":"Frontiers in Dentistry","volume":"20 ","pages":"25"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c1/9e/FID-20-25.PMC10493118.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10295539","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