General dentistry最新文献_第2页

Effects of immersion in coffee solution and brushing on the surface roughness and color change of 3D-printed resins. 咖啡溶液浸泡和涂刷对3d打印树脂表面粗糙度和颜色变化的影响。

General dentistry Pub Date : 2026-05-01

Lorena Alves Alodio Silva, Roberta Tarkany Basting, Cecília Pedroso Turssi, Kamila Rosamilia Kantovitz, Fabiana Mantovani Gomes França

{"title":"Effects of immersion in coffee solution and brushing on the surface roughness and color change of 3D-printed resins.","authors":"Lorena Alves Alodio Silva, Roberta Tarkany Basting, Cecília Pedroso Turssi, Kamila Rosamilia Kantovitz, Fabiana Mantovani Gomes França","doi":"","DOIUrl":"","url":null,"abstract":"The objective of this study was to compare changes in the surface roughness and color of 2 types of resin formulated for 3-dimensional (3D) printing and 1 resin formulated for computer-aided design/computer-aided manufacturing (CAD/CAM) following immersion in coffee solution or distilled water and subsequent brushing. Cylindrical specimens were 3-printed with standard or long-term provi-sional resins or milled from CAD/CAM resin blocks (n = 22 per material). After polishing, baseline surface roughness (Ra) and color parameters (CIE L*a*b* and CIEDE2000) were recorded. For 30 days, half of the specimens of each material (n = 11) were immersed in a fresh coffee solution for 3 hours, while the other half were immersed in distilled water. All specimens were then submitted to 16,200 brushing cycles to simulate aging, and surface roughness and color parameters were remeasured. The data were compared according to restorative material, immersion solution, and measurement time using the Kruskal-Wallis and Dunn, Mann-Whitney U, and Wilcoxon tests, respectively, at a significance level of 5%. The surface roughness of the standard 3D-printed resin and the CAD/ CAM-milled resin increased significantly following immersion in distilled water (P < 0.05), but only the milled resin showed a significant increase in surface roughness after immersion in coffee (P < 0.05). For both 3D-printed resins, coffee immersion resulted in significantly greater color change than water immersion (P < 0.05). No significant color change differences among materials were observed after immersion in distilled water (P > 0.05). However, the CAD/CAM--milled resin showed significantly less color change than both 3D-printed resins following immersion in coffee (P < 0.05). The surface roughness of the long-term 3D-printed resin remained stable after aging. Immersion in coffee caused a more visible color change in the 3D-printed resins than in the CAD/CAM--milled resin.","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"74 3","pages":"66-71"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147716567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adenomatoid odontogenic tumor associated with impacted maxillary premolars: report of 2 cases. 腺瘤样牙源性肿瘤伴阻生上颌前磨牙2例报告。

General dentistry Pub Date : 2026-05-01

Syed Salim Abdul-Wasay, John K Brooks, Matthew W Rampersad, Andrew J Layton, Azin Parsa, Ahmed S Sultan, Ngozi A Douglas, Njood Hawari, John R Basile, Behzad Mostoufi

引用次数: 0

Effect of xerostomia and salivary flow on adaptation to conventional complete dentures. 口干和唾液流动对常规全口义齿适应的影响。

General dentistry Pub Date : 2026-05-01

Henrico Badaoui Strazzi-Sahyon, Tamires Matos Felix, Camila Berbel Seloto, Carolina Ferrairo Danielotto-Zanna, Wirley Gonçalves Assunção

{"title":"Effect of xerostomia and salivary flow on adaptation to conventional complete dentures.","authors":"Henrico Badaoui Strazzi-Sahyon, Tamires Matos Felix, Camila Berbel Seloto, Carolina Ferrairo Danielotto-Zanna, Wirley Gonçalves Assunção","doi":"","DOIUrl":"","url":null,"abstract":"This in vivo study aimed to assess the prevalence of xerostomia and quantify salivary flow in users of complete dentures (CDs) as well as examine correlations between these factors and patients' adaptation to new conventional CDs. In this study, 40 individuals responded to a questionnaire assessing the presence of xerostomia and underwent sialometry tests to determine salivary flow and the predominant type of saliva. Salivary flow was assessed during 2 distinct evaluation periods under both unstimulated and stimulated conditions. The initial evaluation period began immediately after the placement of conventional CDs and included a total of 3 sialometry tests performed weekly. The second assessment occurred 4 to 5 months after prosthesis delivery and involved completion of the xerostomia questionnaire, a single collection of unstimulated and stimulated saliva, and an inspection of the CD conditions. The McNemar test was employed to analyze the interaction between the sex of the patients and the presence or absence of xerostomia, while the paired t test was used to assess salivary flow under unstimulated and stimulated conditions in relation to the initial and 4-month evaluation periods. The Wilcoxon test was applied to analyze the interaction between salivary flow and the number of times the patient returned for adjustment. During the initial evaluation period, there were no statistically significant differences in salivary flow based on the collection point (first, second, or third), presence or absence of xerostomia, or predominant saliva type (P > 0.05). Higher salivary flow was associated with fewer return visits for adjustment (P < 0.05). The presence of xerostomia was not influenced by the type of saliva or sex of the patient. However, salivary flow had a direct impact on the adaptation of patients to conventional CDs, with higher salivary flow associated with fewer return visits for adjustment.","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"74 3","pages":"16-22"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147716540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of impression techniques used to obtain digital models for CAD/CAM post and core. 用于获取CAD/CAM柱、芯数字模型的压模技术比较。

General dentistry Pub Date : 2026-05-01

Belizane Graças Oliveira Maia, Manuela Lima Barros Oliveira, Alberto Marçal Batista, Rafael Binato Junqueira, Rodrigo Furtado Carvalho

{"title":"Comparison of impression techniques used to obtain digital models for CAD/CAM post and core.","authors":"Belizane Graças Oliveira Maia, Manuela Lima Barros Oliveira, Alberto Marçal Batista, Rafael Binato Junqueira, Rodrigo Furtado Carvalho","doi":"","DOIUrl":"","url":null,"abstract":"The objective of this study was to compare the accuracy of 2 root canal impression techniques used to obtain digital models for post and core restorations in a computer-aided design/computer-aided manufacturing process. Cone beam computed tomography and segmentation software were used to calculate the post space (PS) volume of a decoronated, endodontically treated bovine tooth. Measurements were performed 10 times to obtain a mean reference value that served as the control. A benchtop dental scanner was used to scan 10 impressions made with polyvinyl siloxane (PVS) and 10 made with chemically activated acrylic resin (CAAR) to obtain 3-dimensional digital models, whose volumes were measured with mesh processing software. The 1-sample t test was used to compare the mean volume of each test impression group with the control PS volume (trueness), and the t test for independent samples was used to compare the test groups with each other (precision). The dispersion, variance, and standard deviation were analyzed (α = 0.05). The mean (SD) control PS volume was 84.11 (0.15) mm3, while the volume of the CAAR group was 78.70 (2.33) mm3, and the volume of the PVS group was 86.20 (2.08) mm3. The difference between the PS volume and the volume of each test group was statistically significant (CAAR, P < 0.001; PVS, P = 0.011), and the volumes of the test groups were significantly different from each other (P < 0.001). The variance was 5.42 mm3 in the CAAR group and 4.32 mm3 in the PVS group. While both materials showed some distortion, the results suggest that the PVS technique generates more accurate digital models than the CAAR technique, with values that more closely approach the reference PS volume and exhibit less variation in successive measurements.","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"74 3","pages":"50-55"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147716544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Applications of magnetic resonance imaging in dentistry and material compatibility: an update. 磁共振成像在牙科和材料相容性中的应用：更新。

General dentistry Pub Date : 2026-05-01

Padmanidhi Agarwal, Gosla Srinivas Reddy, Kratika Singh, Praveen Gangadharappa, Nouman Rashid, Kanav Jain

引用次数: 0

Effect of xerostomia and salivary flow on adaptation to conventional complete dentures. 口干和唾液流动对常规全口义齿适应的影响。

General dentistry Pub Date : 2026-05-01

Henrico Badaoui Strazzi-Sahyon, Tamires Matos Felix, Camila Berbel Seloto, Carolina Ferrairo Danielotto-Zanna, Wirley Gonçalves Assunção

{"title":"Effect of xerostomia and salivary flow on adaptation to conventional complete dentures.","authors":"Henrico Badaoui Strazzi-Sahyon, Tamires Matos Felix, Camila Berbel Seloto, Carolina Ferrairo Danielotto-Zanna, Wirley Gonçalves Assunção","doi":"","DOIUrl":"","url":null,"abstract":"This in vivo study aimed to assess the prevalence of xerostomia and quantify salivary flow in users of complete dentures (CDs) as well as examine correlations between these factors and patients' adaptation to new conventional CDs. In this study, 40 individuals responded to a questionnaire assessing the presence of xerostomia and underwent sialometry tests to determine salivary flow and the predominant type of saliva. Salivary flow was assessed during 2 distinct evaluation periods under both unstimulated and stimulated conditions. The initial evaluation period began immediately after the placement of conventional CDs and included a total of 3 sialometry tests performed weekly. The second assessment occurred 4 to 5 months after prosthesis delivery and involved completion of the xerostomia questionnaire, a single collection of unstimulated and stimulated saliva, and an inspection of the CD conditions. The McNemar test was employed to analyze the interaction between the sex of the patients and the presence or absence of xerostomia, while the paired t test was used to assess salivary flow under unstimulated and stimulated conditions in relation to the initial and 4-month evaluation periods. The Wilcoxon test was applied to analyze the interaction between salivary flow and the number of times the patient returned for adjustment. During the initial evaluation period, there were no statistically significant differences in salivary flow based on the collection point (first, second, or third), presence or absence of xerostomia, or predominant saliva type (P > 0.05). Higher salivary flow was associated with fewer return visits for adjustment (P < 0.05). The presence of xerostomia was not influenced by the type of saliva or sex of the patient. However, salivary flow had a direct impact on the adaptation of patients to conventional CDs, with higher salivary flow associated with fewer return visits for adjustment.","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"74 3","pages":"16-22"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148601713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Animal-assisted therapy for fear and anxiety management during pediatric dental treatment: case reports. 儿童牙科治疗期间恐惧和焦虑管理的动物辅助疗法：病例报告。

General dentistry Pub Date : 2026-05-01

Beatriz Malouf Schlesinger, Giovana Ricardo Paiva, Anna Carolina Volpi Mello-Moura, Daniela Prócida Raggio, Tamara Kerber Tedesco, Lucila Basto Camargo, Tatiane Fernandes Novaes

{"title":"Animal-assisted therapy for fear and anxiety management during pediatric dental treatment: case reports.","authors":"Beatriz Malouf Schlesinger, Giovana Ricardo Paiva, Anna Carolina Volpi Mello-Moura, Daniela Prócida Raggio, Tamara Kerber Tedesco, Lucila Basto Camargo, Tatiane Fernandes Novaes","doi":"","DOIUrl":"","url":null,"abstract":"Animal-assisted therapy (AAT) is associated with the relief of pain, stress, and anxiety in various healthcare fields. To evaluate the usefulness of AAT to provide emotional support and assist in behavioral management of patients for routine pediatric dentistry, 2 children underwent dental treatment with and without the application of AAT after their guardians provided informed consent. The patients' stress, anxiety, and behavior in the sessions with and without AAT were compared. The patients were a 4-year-old boy and a 7-year-old girl who required rehabilitative treatment of primary teeth. During initial evaluations, basic behavioral management techniques were applied, but no significant progress in the patients' behavior was observed. Therefore, AAT with trained dogs was suggested. The first treatment sessions were conducted without the presence of animals, and AAT was implemented in the second appointments. The patients' salivary cortisol levels were measured at the beginning and end of the treatments, and the Facial Image Scale was used to assess children's anxiety. A pediatric dentist observed the children's behavior by applying the Brazilian version of the Venham Behavior Rating Scale, in which scores range from 0 for acceptable behavior (total cooperation) to 5 for unacceptable behavior, with scores 1 to 5 representing increasing degrees of protest. During AAT sessions, there was an apparent reduction in the patients' anxiety levels; salivary cortisol decreased from the beginning to end of treatment in both patients (from 1.15 to 0.95 mg/mL in the boy; from 6.05 to 0.77 mg/mL in the girl). A relative improvement in behavior was also observed. The experiences of these 2 pediatric patients suggest that AAT could help to control pain and stress as well as improve the behavior of children during dental procedures.","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"74 3","pages":"37-42"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147716587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of mouthguard use and jaw clenching on athletic strength. 护齿器的使用和咬牙对运动力量的影响。

General dentistry Pub Date : 2026-05-01

John F Wisniewski, Taylor M K Nguyen, Aditya Deshpande, Connor Schwartz

{"title":"Effect of mouthguard use and jaw clenching on athletic strength.","authors":"John F Wisniewski, Taylor M K Nguyen, Aditya Deshpande, Connor Schwartz","doi":"","DOIUrl":"","url":null,"abstract":"Strength is a foundational component of athletic performance, essential for both explosive power and sustained force generation. In dental sports medicine, emerging interest surrounds the potential role of mouthguards and jaw clenching in modulating strength. While commonly used for dental protection, mouthguards may offer performance benefits by altering neuromuscular activation. This scoping review synthesizes peer-reviewed studies examining the effects of mouthguards and jaw clenching on strength-related performance. A systematic search was conducted using PubMed, Scopus, and Web of Science. Ten articles met the inclusion criteria and were independently reviewed by 2 researchers. The 10 studies included a total of 20 comparisons involving various combinations of mouthguard use, jaw positioning, and exercises. The effects of mouthguards and jaw clenching were compared with each other and/or habitual jaw position (control). Among the 20 comparisons, 8 showed statistically significant improvements in strength with mouthguard use and 1 with jaw clenching alone. Six comparisons demonstrated positive but nonsignificant increases in strength with mouthguard use and 1 with jaw clenching alone. Custom-made mouthguards demonstrated more consistent benefits than over-the-counter (\"boil-and-bite\") options. Jaw clenching alone also appeared to positively influence performance in most comparisons but was generally found to be less effective than clenching performed with a mouthguard. The findings of this scoping review suggest that the combination of custom-made mouthguard use and jaw clenching provides greater benefits in enhancing strength performance than either jaw clenching alone or the combination of over-the-counter mouthguard use and jaw clenching.","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"74 3","pages":"56-64"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147716562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of dentin depth on the bond strength of dual-cure self-etching resin cements. 牙本质深度对双固化自蚀刻树脂粘结强度的影响。

General dentistry Pub Date : 2026-05-01

Marconne Humberto Batista Barreira, Mayara Zaghi Picolo, Cecilia Pedroso Turssi, Fabiana Mantovani Gomes França, Flávia Lucisano Botelho Amaral, Roberta Tarkany Basting

{"title":"Influence of dentin depth on the bond strength of dual-cure self-etching resin cements.","authors":"Marconne Humberto Batista Barreira, Mayara Zaghi Picolo, Cecilia Pedroso Turssi, Fabiana Mantovani Gomes França, Flávia Lucisano Botelho Amaral, Roberta Tarkany Basting","doi":"","DOIUrl":"","url":null,"abstract":"This study evaluated the microshear bond strength (μSBS) and failure modes of dual-cure self-etching resin cements to superficial and deep dentin after storage times of 24 hours or 12 months. Thirty sound human third molars were sectioned to create a total of 60 dentin slices (2.0 mm thick), which were randomly assigned to each resin luting agent (RelyX U200, Panavia F 2.0, or Panavia V5) and storage period (n = 10 per agent per storage period). In each luting agent group, resin cement cylinders (0.8 mm in diameter × 1 mm in height) were bonded to both superficial and deep dentin and tested for μSBS after 24 hours or 12 months of storage. The μSBS data were analyzed using a generalized linear model, and failure mode data were evaluated using Fisher exact test (α = 5%). Panavia V5 exhibited significantly greater bond strength than RelyX U200 at both dentin depths and timepoints (P < 0.05). Panavia V5 also showed greater bond strength than Panavia F 2.0 (P < 0.05), except for in deep dentin at 12 months. RelyX U200 demonstrated significantly more premature failures than the other materials (P < 0.05), with the rate of premature failures reaching as high as 85.0% of specimens in deep dentin at 12 months. In deep dentin at 24 hours and superficial dentin at 12 months, there were significant associations between failure type and cement (P < 0.05), with adhesive failures predominating across all cements. Only Panavia V5 showed cohesive failures within dentin (23.5%) after 12 months in deep dentin. Panavia V5 demonstrated superior bond strength to both superficial and deep dentin, maintaining greater bond durability over time compared with RelyX U200 and Panavia F 2.0.","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"74 3","pages":"31-36"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147716574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Noninvasive esthetic masking of enamel hypoplasia: an alternative approach with polymer-based color stains. 釉质发育不全的无创美学遮蔽：聚合物基彩色染色的替代方法。

General dentistry Pub Date : 2026-05-01

Ana Clara Paim, Rodrigo Keigo Nakagawa, Maria Eduarda Campos Machado, Marco Aurelio Benini Paschoal, Hugo Henriques Alvim, Izabella Barbosa Fernandes

{"title":"Noninvasive esthetic masking of enamel hypoplasia: an alternative approach with polymer-based color stains.","authors":"Ana Clara Paim, Rodrigo Keigo Nakagawa, Maria Eduarda Campos Machado, Marco Aurelio Benini Paschoal, Hugo Henriques Alvim, Izabella Barbosa Fernandes","doi":"","DOIUrl":"","url":null,"abstract":"Developmental defects of enamel are structural alterations associated with changes during the stages of enamel formation and are frequently associated with the development of dental caries. These defects may increase dentinal sensitivity, impair esthetics, and lower self-esteem. Minimally invasive treatments are recommended approaches for managing these conditions, aiming to preserve the dental structure, especially in young patients. This case report of a 9-year-old boy with a developmental defect of enamel describes a noninvasive esthetic approach to treating enamel hypoplasia associated with dental caries in a permanent tooth after trauma to the primary predecessor. Treatment involved a desensitization protocol that included the use of a low-power laser and desensitizing paste with dentinal tubule--obliterating activity followed by a technique for masking the defect with polymer-based color stains according to the theory of complementary colors. The patient's sensitivity scores were recorded with a visual analog scale and the Face, Legs, Activity, Cry, and Consolability (FLACC) scale before and after each intervention, and his oral health--related quality of life was measured using a questionnaire prior to the first session and on the last day of the treatment. For this patient, the protocol seemed to be effective at decreasing tooth sensitivity as well as improving dental esthetics and quality of life. The characterization technique represents a conservative and effective alternative to mask changes associated with enamel defects, especially in young patients.","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"74 3","pages":"25-29"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147716533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0