Journal of oral science最新文献_第5页

Comparative effects of integrated and post-applied nano-hydroxyapatite on enamel properties following high-concentration hydrogen peroxide bleaching. 纳米羟基磷灰石对高浓度过氧化氢漂白后牙釉质性能的影响。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.26-0097

Elif E Devrimci, Hande Kemaloğlu, İdil Gönüllü, Ilgın İlgenli, Tijen Pamir, Murat Türkün

{"title":"Comparative effects of integrated and post-applied nano-hydroxyapatite on enamel properties following high-concentration hydrogen peroxide bleaching.","authors":"Elif E Devrimci, Hande Kemaloğlu, İdil Gönüllü, Ilgın İlgenli, Tijen Pamir, Murat Türkün","doi":"10.2334/josnusd.26-0097","DOIUrl":"https://doi.org/10.2334/josnusd.26-0097","url":null,"abstract":"Purpose: This study investigated whether nano-hydroxyapatite (nHAp) can reduce the adverse effects of high-concentration hydrogen peroxide (HP) bleaching - such as mineral loss and surface softening - while maintaining whitening efficacy. Incorporation of nHAp into the bleaching gel was also compared with its application after bleaching.Methods: Sixty bovine enamel specimens were randomly assigned to six groups and treated with different HP-based protocols with or without nHAp. Color change (ΔE) was measured using spectrophotometry, microhardness with the Vickers test, and surface morphology and elemental composition using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS).Results: All HP-treated groups showed significant color improvement (ΔE > 3.3, P < 0.05). Post-bleaching nHAp application produced higher ΔE values than bleaching alone, though not to a significant degree. The highest ΔE was observed in the group receiving HP followed by nHAp. Post-bleaching nHAp significantly improved microhardness and calcium content in the Opalescence group, while effects in the BioWhiten group were limited and not significant. SEM analysis revealed superficial granular deposits and partial surface coverage in nHAp-treated specimens, particularly after post-bleaching application.Conclusion: Incorporation of nHAp during or after HP bleaching can reduce enamel alterations while preserving whitening efficacy, particularly when applied after bleaching in systems lacking intrinsic remineralizing components.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":"68 4","pages":"255-260"},"PeriodicalIF":1.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unstable sitting postures affect head and neck muscle activity during mastication. 不稳定的坐姿会影响咀嚼时头颈部肌肉的活动。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.25-0366

Motoyoshi Morishita, Mizuho Ohta, Nobuhiro Okamoto, Kayoko Nonaka

{"title":"Unstable sitting postures affect head and neck muscle activity during mastication.","authors":"Motoyoshi Morishita, Mizuho Ohta, Nobuhiro Okamoto, Kayoko Nonaka","doi":"10.2334/josnusd.25-0366","DOIUrl":"10.2334/josnusd.25-0366","url":null,"abstract":"Purpose: This study aimed to assess whether masseter, suprahyoid, and trapezius muscle activities during mastication differed with changes in sitting posture.Methods: Thirteen healthy young adults chewed gummy candies under three conditions: sitting with sole-ground contact, sitting without sole-ground contact, and sitting on an unstable balance board. Electromyographic electrodes were attached to the masseter, suprahyoid, and trapezius muscles to evaluate muscle activity. The examiner also evaluated the mastication time, total integral values for each muscle, and number of chewing cycles from start of mastication to swallowing.Results: The total integral values for masseter and suprahyoid muscles were significantly higher for the no sole-ground contact and balance-board conditions than those under the sole contact condition. The total integral value for the right trapezius muscle was also significantly greater for the no sole-ground contact and balance-board conditions than that under the sole contact condition.Conclusion: Increased masseter and suprahyoid muscle activity under unstable sitting conditions suggests that a stable sitting posture is necessary for efficient mastication. The right trapezius muscle also exhibited greater activity under unstable sitting conditions, which may have been a compensatory response to enhance postural stability alongside the masticatory muscles.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":"68 2","pages":"112-117"},"PeriodicalIF":1.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147690792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","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 ion implantation on adhesion to zirconia material. 离子注入对氧化锆材料粘附性能的影响。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.25-0328

Takaaki Sato, Yoshikazu Teranishi, Yasushi Shimada, Masaomi Ikeda

{"title":"Effect of ion implantation on adhesion to zirconia material.","authors":"Takaaki Sato, Yoshikazu Teranishi, Yasushi Shimada, Masaomi Ikeda","doi":"10.2334/josnusd.25-0328","DOIUrl":"10.2334/josnusd.25-0328","url":null,"abstract":"Purpose: This study was designed to investigate the effect of silicon (Si) ion implantation on the strength of zirconia bonding to resin cement.Methods: Si ions were implanted in a sintered zirconia plate at an acceleration energy of 50 or 100 keV. The implantation dose was divided into four subgroups of 1 × 1013, 1 × 1014, 1 × 1015, or 1 × 1016 ions/cm2. A total of nine groups were set up, including a control group. Stainless steel rods were bonded to the zirconia plates using resin cement and subjected to tensile bond strength testing. Other plates were subjected to surface roughness measurement and elemental analyses.Results: In the tensile bond strength test, some groups exhibited significantly higher values than the control group. The surface roughness measured using a confocal laser scanning microscope showed no significant differences in any group compared with the control group. The elemental analyses showed that X-ray photoelectron spectroscopy was able to detect Si ions that could not be detected by energy-dispersive X-ray spectroscopy.Conclusion: Despite the limitations of this study, it proved possible to implant Si ions into zirconia materials. It was also suggested that the strength of zirconia bonding to resin cement could be improved by irradiation.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":"68 1","pages":"40-43"},"PeriodicalIF":1.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145998355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genipin-mediated dentin biomodification using nanobubble water. 用纳米泡水介导牙本质生物改性。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.26-0255

Kei Kaida, Yohsuke Taira, Takafumi Egoshi, Shizuka Yamada

引用次数: 0

Short-term effectiveness of toothpaste containing honeysuckle extract for treating recurrent aphthous ulcers in a randomized, double-blind, placebo-controlled clinical trial. 含金银花提取物牙膏治疗复发性阿弗顿溃疡的短期疗效：随机、双盲、安慰剂对照临床试验。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.26-0107

Mingxuan Quan, Jiaqi Liao, Yuwei Yuan, Jing Zhang, Fei Xu, Jijia Li

{"title":"Short-term effectiveness of toothpaste containing honeysuckle extract for treating recurrent aphthous ulcers in a randomized, double-blind, placebo-controlled clinical trial.","authors":"Mingxuan Quan, Jiaqi Liao, Yuwei Yuan, Jing Zhang, Fei Xu, Jijia Li","doi":"10.2334/josnusd.26-0107","DOIUrl":"10.2334/josnusd.26-0107","url":null,"abstract":"Purpose: This study aimed to investigate the effectiveness of toothpaste containing honeysuckle extract as an alternative treatment for recurrent aphthous ulcers (RAUs).Methods: A randomized, double‑blind, placebo‑controlled trial was conducted. Eighty‑two participants were randomly allocated to either the experimental group (n = 41) or the control group (n = 41), with the experimental group using toothpaste containing honeysuckle extract (Lonicera macranthoides) and the control group using toothpaste without honeysuckle extract. The participants used the designated toothpaste and were followed up on days 0, 7, and 14 to assess ulcer healing rates and ulcer status indicators.Results: On day 7, the ulcer healing rate was 58.5% in the experimental group and 31.7% in the control group (P < 0.05). In addition, statistically significant differences were observed between the experimental and control groups in ulcer size, number of ulcers, hyperemia, pain, and average ulcer duration (P < 0.05), indicating a greater improvement in the ulcer status indicators in the experimental group. On day 14, the ulcer healing rate and ulcer status indicators of the two groups did not differ statistically (P > 0.05).Conclusion: Toothpaste containing honeysuckle extract may relieve multiple clinical symptoms of RAUs and promote ulcer healing in the short term.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":"68 4","pages":"244-249"},"PeriodicalIF":1.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149220338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A case report on the oral manifestations of Stüve-Wiedemann syndrome. st<s:1> ve- wiedemann综合征口腔表现1例报告。

IF 1.7 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.25-0252

Ahammad Kandari, Wafaa Alshamali, Dalal ALnakkas, Hessa Alfadhli, Israa Alibraheem

引用次数: 0

Comparison of intratubular biomineralization between in vivo and in vitro conditions. 体内和体外小管内生物矿化的比较。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.25-0220

Sieun Nam, Yeon-Jee Yoo, Mi-Kyung Yu, Kyung-San Min

{"title":"Comparison of intratubular biomineralization between in vivo and in vitro conditions.","authors":"Sieun Nam, Yeon-Jee Yoo, Mi-Kyung Yu, Kyung-San Min","doi":"10.2334/josnusd.25-0220","DOIUrl":"10.2334/josnusd.25-0220","url":null,"abstract":"Purpose: This study aimed to investigate whether the amount, chemical characteristics, and morphological patterns of intratubular biomineralization are similar under both in vivo and in vitro conditions.Methods: Root canal treatment, which included preparation, irrigation, and obturation with gutta-percha plus a premixed hydraulic bioceramic endodontic sealer, was performed on seven teeth in seven patients. These teeth were then extracted between 6 months and 5 years later for reasons unrelated to the endodontic therapy. Seven extracted, single-rooted human teeth were also endodontically treated using the same procedure. The in vitro-treated teeth were stored in phosphate-buffered saline at room temperature for 30 days. Scanning electron microscopy was used to analyze the amount and morphology of intratubular biomineralization in all 14 teeth. Energy-dispersive X-ray spectroscopy was also performed to identify the elements present in the dentinal tubules.Results: There was no significant difference in the measured amount of biomineralization between the two groups. However, the morphological patterns of precipitates within the dentinal tubules differed between the in vivo (granular) and in vitro (plate-like) conditions.Conclusion: These results indicate that quantitative evaluation of the amount of biomineralization in vitro is a feasible alternative for replication of in vivo conditions.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":"68 1","pages":"30-34"},"PeriodicalIF":1.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145998373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of fish scale collagen-immobilized poly(lactic acid) films using chemical treatment with hexamethylenediamine. 用六亚二胺化学处理鱼鳞胶原-固定化聚乳酸薄膜的研制。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.26-0015

Megumi Fuse

{"title":"Development of fish scale collagen-immobilized poly(lactic acid) films using chemical treatment with hexamethylenediamine.","authors":"Megumi Fuse","doi":"10.2334/josnusd.26-0015","DOIUrl":"10.2334/josnusd.26-0015","url":null,"abstract":"Purpose: This study aimed to evaluate how immobilizing tilapia fish scale type 1 collagen onto poly(lactic acid) (PLA), following chemical modification with hexamethylenediamine (HMDA), affects the adhesion and proliferation of mouse osteoblast-like cells (OLCs).Methods: PLA films were chemically modified by HMDA immersion to introduce amino groups (-NH2) (PLA-NH2). Tilapia fish scale type 1 collagen was subsequently immobilized onto the PLA-NH2 surface via a water-soluble carbodiimide condensation reaction, producing (TFColl-PLA-NH2). Surface properties of the films were characterized using contact angle measurements and X-ray photoelectron spectroscopy (XPS). Biological evaluation was conducted by culturing OLCs on PLA, PLA-NH2, and TFColl-PLA-NH2 films, followed by quantification of cell numbers.Results: The contact angles of PLA-NH2 and TFColl-PLA-NH2 were significantly lower than PLA (P < 0.05). XPS confirmed successful immobilization of tilapia collagen onto the PLA surface. At all time points, TFColl-PLA-NH2 showed the highest cell numbers, followed by PLA-NH2, while PLA had the lowest (P < 0.05). PLA-NH2 promoted calcification more effectively than PLA (P < 0.05), and TFColl- PLA-NH2 further enhanced calcification compared with PLA-NH2 (P < 0.05).Conclusion: PLA surface treatment with HMDA is an effective and straightforward method. Tilapia fish scale type 1 collagen has potential for application as a novel biomaterial source.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":"68 3","pages":"152-157"},"PeriodicalIF":1.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148455348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","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 oral function test selection on the diagnosis of oral hypofunction in Japanese dental clinic patients. 日本牙科门诊患者口腔功能障碍诊断中口腔功能检查选择的影响。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.26-0146

Tomoaki Shintani, Nami Obayashi, Shin Morimoto, Mai Yoshino, Tetsuya Yoshimoto, Mikihito Kajiya

引用次数: 0

A comparison of endodontists and artificial intelligence chatbots in regenerative endodontic procedures: knowledge and preferences. 牙髓医生和人工智能聊天机器人在再生牙髓治疗中的比较：知识和偏好。

IF 1.4 4区医学

Journal of oral science Pub Date : 2026-01-01 DOI: 10.2334/josnusd.25-0375

Güzide P Sezgin, Hatice Sağlam, Sema Sönmez Kaplan, Tuna Kaplan

{"title":"A comparison of endodontists and artificial intelligence chatbots in regenerative endodontic procedures: knowledge and preferences.","authors":"Güzide P Sezgin, Hatice Sağlam, Sema Sönmez Kaplan, Tuna Kaplan","doi":"10.2334/josnusd.25-0375","DOIUrl":"10.2334/josnusd.25-0375","url":null,"abstract":"Purpose: This study aimed to compare the knowledge and reliability of endodontists and artificial intelligence (AI) chatbots (ChatGPT 4o and DeepSeek-R1) in relation to regenerative endodontic procedures (REPs).Methods: A 19-item survey addressing case selection, materials, complications, success criteria, and follow-up in REPs was administered to endodontists and AI chatbots. Four clinical case scenarios with sub-questions required participants to rank treatment options by preference. Responses were analyzed for knowledge and reliability using Kruskal-Wallis, chi-square, and Fisher's exact tests; Cronbach's alpha assessed internal consistency.Results: ChatGPT 4o demonstrated a significantly higher knowledge rate for REPs (100%) than endodontists (61.5%) and DeepSeek-R1 (56.9%) (P < 0.05). It also achieved the greatest reliability (Cronbach's alpha = 0.852). In the first three case scenarios, ChatGPT-4o most frequently favored REPs, while in the fourth scenario, apexification or conventional root canal therapy was more often preferred.Conclusion: ChatGPT 4o exhibited superior knowledge of REPs and reliability compared to endodontists and DeepSeek-R1, which showed moderate and low reliability, respectively. ChatGPT 4o consistently favored REPs for managing immature permanent teeth. As AI use expands in healthcare, optimizing its integration into clinical endodontic decision-making is essential to maximize patient benefit.","PeriodicalId":16646,"journal":{"name":"Journal of oral science","volume":"68 3","pages":"140-146"},"PeriodicalIF":1.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148456193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0