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en: Effects of Candidalysin Derived from Candida albicans on the Expression of Pro-Inflammatory Mediators in Human Gingival Fibroblasts

en: International Journal of Molecular Sciences


en: Clinical Statistical Study of New Patients in Oral Implant Center at Tokushima University Hospital

ja: 徳島大学病院口腔インプラントセンターにおける新来患者の臨床統計

en:
Purpose: Oral Implant Center established in April 2014 as specialized clinical section at Tokushima University Hospital. The aim of this study was to report a survey of new patients of preoperative registration at Oral Implant Center during the five years since its establishment.
 Subjects and methods: Investigation of gender and age, chief complaint, details of treatment requests, sites of missing teeth, number of missing teeth, cause of tooth extraction, and treatment status for patients registered at Oral Implant Center from April 2014 to March 2019 were performed.
 Results: Regarding the chief complaint, 605 (88.3%) patients consulted preoperatively for a request for implant treatment, and 80 (11.7%) consulted about complain of previous implant treatment or a request for continued maintenance. The average number of missing teeth for which treatment was requested was 3.8. The proportion of patients who wished to be treated for the number of missing teeth was 32.2% for missing one tooth, 56.1% for missing few teeth (2 to 6 teeth), 7.8% for missing many teeth (7 or more teeth) and edentulous 3.9%. As for the details of treatment requests of 80 patients who had already received implant treatment, 33 (41.3%) consulted on the improper superstructure, 29 (36.3%) wished to examine and treat peri-implantitis, 4 (5%) wished to remove the implant and 14 (17.5%) requested continued maintenance.
 Discussion and conclusion: The number of new patients regarding implant treatment has been about the same each year, and it was reconfirmed that it was recognized as a treatment method for dental prostheses. In particular, many patients wished to receive implant treatment for a single tooth missing, suggesting that the patients also recognized the importance of preserving the remaining teeth. On the other hand, the number of patients complaining of previous implant treatment tends to increase, and it is necessary to consider future correspondence.

en: Journal of Oral Health and Biosciences

ja: Journal of Oral Health and Biosciences


en: Association between buccal mucosa ridging and oral feature/symptom and its effects on occlusal function among dentate young adults in a cross-sectional study of Japan

en: The purpose of this study was to assess the distinction in oral features/symptoms and occlusal function between young dentate individuals with and without buccal mucosa ridging (BMR). This cross-sectional study included 200 young adults. The outcome variable was BMR state. The predictor variables were oral features/symptoms (torus palatinus, torus mandibularis, temporomandibular joint noise, bruxism, tongue thrusting habit, number of teeth present, and occlusal vertical dimension) and oral function (occlusal force, occlusal contact area, occlusal pressure, tongue pressure). These variables were compared among participants with and without BMR using univariate and multiple logistic regression analysis. There were 119 participants with BMR and 81 without BMR. Multiple logistic regression analysis revealed that BMR was closely associated with bruxism, occlusal vertical dimension, and occlusal pressure. Oral/occlusal changes of increased bruxism, lower occlusal vertical dimension, and lower occlusal pressure constitute the major causes of BMR.

en: Cranio

ja: Cranio


en: Candy eating behaviour to improve swallowing function in dementia subjects.

en: Our new rehabilitation method was well accepted by older adults with dementia, and there was an improvement in oral function as a result of the rehabilitation, which had some good influence on weight gain.

ja: No significant change was observed after the training. The increase group contained 4 patients and the non-increase group contained 21 patients. There were no significant differences in MMSE, BI, or BMI between the two groups before and after the training. However, the CST values of the increase group before the training (0.31 ± 0.13 g/min) were significantly lower than non-increase group (0.69 ± 0.27 g/min) (p < 0.01). Respective changes in BMI before and after training were 1.13 ± 0.85 kg/m² and -0.53 ± 1.76 kg/m² in the increase and non-increase, and the difference in these changes was statistically significant (p = 0.04).

en: Archives of Gerontology and Geriatrics

ja: Archives of Gerontology and Geriatrics


en: Investigation of Effective Modification Treatments for Titanium Membranes

en: Abstract: Titanium membranes are used for guided bone regeneration in implant therapy. However,as a bioinert material, titanium does not have the ability to accelerate bone formation. Various titaniumsurface treatments to confer bioactivity have been demonstrated; however, there are concerns aboutthe influence of chemical treatments for thin titanium membranes. This study investigated theinfluence of surface modifications on the structure of titanium membranes. Titanium membranes of20 m thickness were treated with acid or alkali solutions, and we evaluated their surface structure,wettability, thickness, and mechanical strength compared to non-treated membranes. Alkali-treatedtitanium membranes displayed the formation of nanoscale pore structures on their surfaces, enhancedhydrophilicity, and almost same thickness compared with acid-treated membranes. Furthermore, thetensile strength of alkali-treated membranes was comparable to non-treated membranes. These resultssuggest that alkali treatment is an appropriate surface modification method for titanium membranes.

en: Applied Sciences

ja: Applied Sciences


en: Evaluation of shear bond strength between PEEK and resin-based luting material

en: ObjectivesThe purpose of this study was to evaluate the bond strength of polyetheretherketone (PEEK) to resin-based luting material.MethodsEighty PEEK specimens were randomly divided into two groups (n = 40/group): no treatment and sandblasting. Each of the 40 specimens of dental gold-silver-palladium alloy (PALLAZ12-n; Yamamoto Precious Metal Co., Ltd., Osaka, Japan), zirconia (Aadva Zirconia; GC, Tokyo, Japan), and hybrid composite resin (CERASMART; GC, Tokyo, Japan) was used as a control material for PEEK. Each group was divided into four subgroups (n = 10) for the different resin-based luting materials: Panavia® V5 (Kuraray Medical, Tokyo, Japan), RelyXTM Ultimate Resin Cement (3M ESPE, St Paul, MN, USA), G-CEM Link Force (GC, Tokyo, Japan), and Super-Bond C&B (Sun Medical, Siga, Japan). The resin-based luting materials were bonded onto the specimens. All specimens were stored in distilled water at 37 °C for 24 h. Bond strength was measured with a shear test, and failure modes were assessed by stereomicroscopy. The surfaces were observed by scanning electron microscopy after the various pretreatments.ResultsCompared with the control group, the PEEK group showed a significantly lower (p < 0.05) shear bond strength for most of the specimens. Among PEEK groups, the most frequent failure mode was adhesive failure between the material and the resin-based luting material.ConclusionsThis study found that the bond strength between PEEK and resin-based luting materials was not adequate for clinical use of PEEK.

en: Journal of Oral Biosciences

ja: Journal of Oral Biosciences