Masseter muscle thickness and elasticity in periodontitis.
This study aimed to compare the thickness and elasticity of the masseter muscle between patients with gingivitis and patients with periodontitis. A total of 124 patients (63 gingivitis, 61 chronic periodontitis) were recruited at the start of the study, but only 84 patients were declared as final participants. Patients were divided into two groups: (1) patients suffering from gingivitis and (2) those with generalized chronic periodontitis. Clinical (PI, plaque index; GI, gingival index; PD, probing depth; CAL, clinical attachment loss; and BOP, bleeding on probing scores) and ultrasonographic (thickness and elasticity of t...
Source: Journal of oral science - November 13, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Bactericidal and cytotoxic effects of acid-electrolyzed functional water.
Authors: Okamura T, Tamura M, Suguro H, Ohtsu M, Omagari D, Yoshino A, Ogiso B, Asano M Abstract Sodium hypochlorite (NaOCl) is widely used as an antimicrobial irrigant; however, it has cytotoxic and neurotoxic effects. For these reasons, development of new, safe irrigants other than NaOCl is long overdue. In the present study, the antimicrobial and noxious effects of acid-electrolyzed functional water (FW) were evaluated and compared with those of NaOCl. Enterococcus faecalis, Streptococcus mutans, Porphyromonas gingivalis, or Candida albicans were mixed with each tested solution for 30 s. The mixtures were then p...
Source: Journal of oral science - November 13, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Contribution of different adherent properties of Granulicatella adiacens and Abiotrophia defectiva to their associations with oral colonization and the risk of infective endocarditis.
Authors: Sasaki M, Shimoyama Y, Ishikawa T, Kodama Y, Tajika S, Kimura S Abstract Granulicatella adiacens (G. adiacens) and Abiotrophia defectiva (A. defectiva) colonize the oral cavity and form part of the normal flora in the intestinal and genitourinary tracts. As reported previously, the frequency of isolation of G. adiacens from the oral cavity was much higher than that of A. defectiva. However, it has been reported that compared with G. adiacens, A. defectiva was isolated at considerably higher frequencies from the blood of patients with infective endocarditis (IE). Hence, in this study, the in vitro interacti...
Source: Journal of oral science - November 13, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Effectiveness of a clinical pathway for complete denture adjustment.
This study was performed to evaluate the usefulness of a developed clinical pathway (CP) to determine the sequence of dental treatment in patients who are edentulous and use maxillary and mandibular complete dentures. Sixty-two edentulous patients with maxillary and mandibular complete dentures were randomly allocated either to with (31 subjects) or without (31 subjects) a CP. The main categories of the CP were the examination, instructions, practice, idle time, evaluation sheet, preparation, and other steps. The subcategories were made with respect to the main categories. The participants were categorized as dentists, ass...
Source: Journal of oral science - October 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Relation between knee extension torque and occlusal force in community-dwelling elderly adults.
Authors: Igarashi K, Watanabe Y, Kawai H, Motokawa K, Umeki K, Ito M, Kera T, Kojima M, Ihara K, Fujiwara Y, Kim H, Obuchi S, Hirano H, Kawai Y Abstract The relation between occlusal force and general motor ability induced by lower-limb musculature is unclear. To identify indicators of oral and lower-limb muscle weakness, this study examined the relation between masticatory muscle strength and lower limb muscle force in 742 community-dwelling elderly adults (315 men and 427 women, mean age 73.3 ± 5.5 years) living in Itabashi ward, Tokyo. Multiple regression analysis of the relation between occlusal force an...
Source: Journal of oral science - October 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Effect of social isolation stress on saliva BDNF in rat.
In conclusion, these findings indicate that social isolation stress may reduce the expression of BDNF protein in blood and saliva, thus providing a potentially valuable biomarker for diagnosis of stress-related disorders. PMID: 31631095 [PubMed - as supplied by publisher] (Source: Journal of oral science)
Source: Journal of oral science - October 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Etch-and-rinse vs self-etch mode for dentin bonding effectiveness of universal adhesives.
In this study, dentin bond fatigue resistance and interfacial science characteristics of universal adhesives through etch-and-rinse and self-etch modes were investigated. Resin composite was bonded to human dentin with four universal adhesives, namely, Adhese Universal, All-Bond Universal, G-Premio Bond, and Scotchbond Universal Adhesive. The initial bond strengths, bond fatigue strengths, and interfacial science characteristics of the universal adhesives with dentin through etch-and-rinse and self-etch modes were determined. Bond fatigue resistance (initial bond strength and bond fatigue strength) of universal adhesives i...
Source: Journal of oral science - October 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Transplantation of dedifferentiated fat cells combined with a biodegradable type I collagen-recombinant peptide scaffold for critical-size bone defects in rats.
In this study, a type I collagen scaffold made from a recombinant peptide (RCP) with an Arg-Gly-Asp motif was developed, and its effect on regeneration in critical-size mandibular bone defects was evaluated. Additionally, the combined effect of the scaffold and lipid-free dedifferentiated fat (DFAT) cells was assessed. Briefly, DFAT cells were separated from mature adipocytes by using a ceiling culture technique based on buoyancy. A 3 cm × 4 cm critical-size bone defect was created in the rat mandible, and regeneration was evaluated by using RCP with DFAT cells. Then, cultured DFAT cells and adipose-derived stem cell...
Source: Journal of oral science - October 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Cost of establishing a general dentistry department in a small or medium-sized hospital.
Authors: Yonenaga K, Iwanabe Y, Masaki C, Hosokawa R, Yonehara Y, Takato T, Masukawa R, Masukawa S Abstract To contribute to future dental healthcare policies, this study compiled data on hospital expenses and follow-ups conducted after a hospital dentistry department was established. In addition, the management status and reports on the utility and challenges of establishing a dentistry department were analyzed. The dentistry department was established through fund raising and inaugurated in May 2009. The depreciation period was set at 7 years, and income and expenditure during the 7 years 8 months after opening w...
Source: Journal of oral science - October 9, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Ultrasonographic study of the temporomandibular joint in individuals with and without temporomandibular disorder.
In conclusion, HRUS allowed visualization of the TMJ structures, but did not allow confirmation of clinical diagnosis by DC/TMD. PMID: 31588097 [PubMed - as supplied by publisher] (Source: Journal of oral science)
Source: Journal of oral science - October 9, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Histopathological and biochemical evaluation of paeoniflorin administration in an experimental periodontitis model.
Authors: Gürkan ÇG, Keleș GÇ, Kurt S, Çiftçi A, Ayas B, Güler Ş, Çetinkaya BÖ Abstract The purpose of this study was to evaluate the effects of administered Paeoniflorin (Pae) on periodontal tissues within an experimental periodontitis model. Forty male Wistar rats were used in this study and experimental periodontitis was created in all rats except in the control group (n = 10, first group). In the periodontitis group, experimental periodontitis was created but no other application was performed (n = 10, second group). In the other groups created experimental per...
Source: Journal of oral science - October 9, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Singlet oxygen generated by a new nonthermal atmospheric pressure air plasma device exerts a bactericidal effect on oral pathogens.
Authors: Hirano Y, Hayashi M, Tamura M, Yoshino F, Yoshida A, Masubuchi M, Imai K, Ogiso B Abstract Oral diseases generally have certain bacteria associated with them. Non-thermal atmospheric pressure plasma (NTAP), generated at atmospheric pressure and room temperature, incorporates several molecules, including reactive oxygen species, that can inactivate various bacteria including oral pathogens. For this reason, several NTAP devices have been developed to treat oral diseases. Use of noble gases can enhance the bactericidal efficacy of NTAP, but this requires additional gas supply equipment. Therefore, a new NTAP...
Source: Journal of oral science - October 9, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Precede-Proceed model based questionnaire and saliva tests for oral health checkup in adult.
Authors: Nomura Y, Matsuyama T, Fukai K, Okada A, Ida M, Yamauchi N, Hanamura H, Yabuki Y, Watanabe K, Sugawara M, Imanishi Y, Koizumi N, Murano Y, Nishiyama A, Fukukawa Y, Otsuka R, Hanada N Abstract Screening is a fundamental strategy for early detection, treatment, and prevention of progression of oral disease and those at high risk for oral disease. While numerous screening tools exist, questionnaires, and saliva tests are often suitable for screening. The questionnaire based on the Precede-Proceed model was developed, validated, and elucidated on the structural interrelationship between these two methods. In t...
Source: Journal of oral science - September 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Prevalence and patterns of tooth agenesis among malocclusion classes in a Japanese orthodontic population.
Authors: Ota S, Hirakata C, Endo T Abstract The purpose of the present study was to assess, in detail, the association between tooth agenesis (TA) and various sagittal skeletal malocclusion groups in a Japanese orthodontic population. One thousand and twenty patients were divided into skeletal Class I, II, or III malocclusion groups using the A point, nasion, and B point angle. TA was identified in each group using panoramic radiographs. Patients with class III malocclusion exhibited a significantly higher prevalence of third molar (M3) agenesis, bilateral and overall agenesis of the maxillary M3s than those patien...
Source: Journal of oral science - September 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Perioperative changes in oral bacteria number in patients undergoing cardiac valve surgery.
This study examined 1) changes in oral bacteria counts during the perioperative period and 2) differences in bacteria counts in patients with or without endotracheal intubation. 47 patients who visited our hospital dental clinic prior to cardiac valve surgery were prospectively recruited. The number of bacteria on the tongue, tooth surface, and buccal vestibule was measured on the day before and 1, 4, and 7 days after surgery. Oral bacteria counts were statistically compared among time points and between intubation and extubation statuses. The oral bacteria counts on the tooth surface and buccal vestibule significantly inc...
Source: Journal of oral science - September 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Ouabain signaling in oral squamous cell carcinoma cells.
This study examined the effects of ouabain stimulation on spontaneous interleukin (IL)-8 and IL-1α secretion in the HSC3 oral squamous cell carcinoma cell line. IL-8 secretion was reduced and IL-1α secretion was increased in the cells. Real-time polymerase chain reaction confirmed that these changes were regulated at the transcriptional level. Further analysis revealed that ouabain stimulation induced phosphorylation of activator protein (AP)-1 components (c-Jun and c-Fos) but not nuclear factor kappa B (NF-κB) components (p65 and p50). A luciferase assay demonstrated that the NF-κB-binding site loc...
Source: Journal of oral science - September 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Cephalometric analysis of the pharyngeal airway space after maxillary advancement surgery.
This study evaluated the effect of maxillary advancement surgery on the size of the pharyngeal airway space (PAS). Lateral cephalometric radiographs were collected for 90 patients (29 men and 61 women; average age, 27.2 ± 8.1 years) before (T1) and 1 year after (T2) maxillary advancement surgery. Horizontal and vertical changes in the maxilla and PAS were measured and classified by distance. The maxilla was advanced horizontally by 2.9 ± 1.7 mm and vertically by 2.7 ± 1.4 mm. Upward maxillary movement of ≥4 mm significantly increased PAS (mean change in PAS, 2.6 mm), and upward maxillary movement si...
Source: Journal of oral science - September 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

IL-1 β enhances cell adhesion through laminin 5 and β4 integrin in gingival epithelial cells.
IL-1β enhances cell adhesion through laminin 5 and β4 integrin in gingival epithelial cells. J Oral Sci. 2019 Sep 20;: Authors: Mezawa M, Tsuruya Y, Yamazaki-Takai M, Takai H, Nakayama Y, McCulloch CA, Ogata Y Abstract The junctional epithelium and dental enamel adhere because of hemidesmosomes containing laminin 5 and α6β4 integrin, which are important adhesion molecules in the internal basal lamina. Interleukin (IL)-1 is important in the pathogenesis of periodontal disease. IL-1β induces bone resorption by activating osteoclasts; however, its effects on adhesion of epithelia...
Source: Journal of oral science - September 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Oral inflammatory load in patients with coronary artery disease.
Authors: Sharma V, Hanafi A, Overgaard CB, Shaibani M, An K, Dzavik V, Glogauer M, Tenenbaum HC Abstract Periodontitis is an oral inflammatory disease that may have an association with coronary artery disease (CAD). Oral inflammatory load (OIL) can be quantified by assesment of oral polymorphonucleocytes (oPMN) in an oral rinse assay. The aim of the present study was to prospectively correlate OIL with CAD on angiography assessed in terms of SYNTAX score in patients presenting with stable angina or acute coronary syndrome (ACS). Consecutive eligible patients at a cardiac center were prospectively recruited. Two set...
Source: Journal of oral science - August 30, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

An analysis of the current condition of the medical insurance system in Japan.
This report analyzes the key problems in the current insurance system and also considers how they can be handled in the future. PMID: 31462625 [PubMed - in process] (Source: Journal of oral science)
Source: Journal of oral science - August 30, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Effect of coffee on the compositional shift of oral indigenous microbiota cultured in vitro.
Authors: Ogata K, Takeshita T, Shibata Y, Matsumi R, Kageyama S, Asakawa M, Yamashita Y Abstract Coffee is a widely consumed beverage containing organic compounds with antibacterial activity. To investigate its possible effect on the growth of oral indigenous microbiota, saliva samples collected from nine young adults were inoculated into brain heart infusion (BHI) medium with or without addition of coffee compounds and cultured at 37°C in 5% CO2 for 12 h. The total bacterial density and composition after cultivation for 0, 6, and 12 h were determined by quantitative PCR analysis and 16S rRNA gene sequencing, r...
Source: Journal of oral science - August 15, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Effect of elapsed time after air abrasion on bond strength of luting agent to CAD/CAM resin blocks.
Authors: Asano R, Otake S, Nozaki K, Yoshida K, Miura H Abstract This experiment assessed the effect of elapsed time between air abrasion and bonding on tensile bond strength (TBS) between computer-aided design/computer-aided manufacturing (CAD/CAM) composite resin blocks and luting agents. Specimens were divided into eight groups classified by block type (Estelite Block or HC Block), elapsed time after air abrasion (none [D0] or 1 week [D7]), luting agent type (Estecem [ESC] or Rely X Ultimate [RLU]), and polymerization condition (chemical cured [CC] or light cured [LC]). In the CC+ESC group, TBS was significantly...
Source: Journal of oral science - August 6, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Suppression of parotid acinar cell dysfunction by the free radical scavenger 3-methyl-1-phenyl-2-pyrazolin-5-one.
Authors: Sakurai H, Yokoyama M, Katsumata-Kato O, Fujita-Yoshigaki J Abstract Salivary gland atrophy and consequent hyposalivation are serious problems in clinical dentistry, as saliva regulates the environment of the oral cavity. To clarify the mechanisms underlying salivary gland dysfunction, a system for primary culture of parotid acinar cells has been established. It has been reported previously that the process of cell isolation from parotid glands triggers stress signaling mediated by Src and p38 mitogen-activated protein (MAP) kinase (p38), leading to dedifferentiation of acinar cells, and that an nicotinami...
Source: Journal of oral science - August 6, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Materials used in regenerative endodontic procedures and their impact on tooth discoloration.
Authors: Fagogeni I, Metlerska J, Lipski M, Falgowski T, Maciej G, Nowicka A Abstract There is some evidence of tooth discoloration after regenerative endodontic procedures. The aim of this review is to determine which materials used in regenerative procedures induce tooth discoloration. The authors searched six digital databases in February 2018: PubMed, Google Scholar, the Cochrane Library, Scopus, Web of Science, and Lilacs. As a result, 353 studies were found. Eleven studies that met the established criteria were selected. Analysis of the selected studies showed that most materials used in regenerative endodont...
Source: Journal of oral science - August 6, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Correlation between caries history and laser fluorescence of sound tooth enamel in restored and unrestored dentition.
Authors: Gómez Clavel JF, Vences DT, Valdiviezo AC, Peña Castillo E, García Muñoz A, Trejo Iriarte CG Abstract The aim of this study was to determine the correlation between laser fluorescence (LF) values of apparently sound tooth enamel and caries history. LF measurements were recorded from six sound enamel tooth surfaces in each of 346 subjects aged 8-25 years. Caries experience was evaluated using the decayed, missing, and filled tooth (DMFT) index and the International Caries Detection and Assessment System (ICDAS). To measure differences between the unrestored and restored tooth gro...
Source: Journal of oral science - July 30, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Formation and assessment of enamel subsurface lesions in vitro.
Authors: Al-Obaidi R, Salehi H, Desoutter A, Tassery H, Cuisinier F Abstract The present study compared two pH-cycling models designed to induce subsurface lesions (SLs) with a less demineralized surface layer on teeth, with the aim of developing new technologies for assessment of such lesions by examining the performance of confocal Raman microscopy for detection of white spot lesions (WSLs). Twelve sound premolars were exposed to two sets of model conditions (A, B) designed to induce SLs. Teeth on which white lesions had formed in vivo were used as positive controls. All specimens were inspected using an intraora...
Source: Journal of oral science - July 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Changes in oral health-related quality of life after oral rehabilitation with dental implants in patients following mandibular tumor resection.
In conclusion, ISP placement improves OHRQoL and the self-assessed masticatory ability. Moreover, the prosthesis type might not significantly affect OHRQoL. PMID: 31341120 [PubMed - as supplied by publisher] (Source: Journal of oral science)
Source: Journal of oral science - July 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Depth of cure of high-viscosity bulk-fill and conventional resin composites using varying irradiance exposures with a light-emitting diode curing unit.
Authors: Hasslen JA, Barkmeier WW, Shaddy RS, Little JR Abstract The purpose of this study was to determine the depth of cure (DOC) of three resin-based composites (RBCs) using varying irradiance exposures with a corded light-emitting diode curing unit. DOCs for Filtek Z250, TPH Spectra, and Tetric EvoCeram Bulk Fill were determined using the International Organization for Standardization (ISO) Standard 4049. The RBCs were light-polymerized using three different power modes and manufacturer-recommended curing times. Irradiance was determined using a spectrometer sensor and the total energy density was calculated fo...
Source: Journal of oral science - July 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Characteristics of patients who perceive dental treatment as a cause of oral mucosal lesions.
Authors: Ju HM, Ahn YW, Jeong SH, Jeon HM, Kim KH, Song BS, Ok SM Abstract This retrospective study aims to investigate the proportion and characteristics of patients who perceive dental treatment (DT) as a cause of oral mucosal lesions (OMLs). A total of 2,302 patients with OMLs visited the Oral Medicine Department of Pusan National University Dental Hospital. The patients were divided into a study group (280 patients who perceived DT as a cause of OMLs) and a control group (300 randomly selected patients). Percentages of DT types, clinical characteristics, and the frequencies of diagnoses and chief complaint (CC)...
Source: Journal of oral science - July 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Wear resistance and microhardness of various interim fixed prosthesis materials.
Authors: Dayan C, Kiseri B, Gencel B, Kurt H, Tuncer N Abstract The aim of the present study is to evaluate the wear resistance and microhardness of various interim fixed prosthesis materials with different chemical compositions and curing methods. One heat-cured and four self-cured acrylic resins, and three self-cured, one light-cured, and one dual-cured composite-based materials were tested. For microhardness, samples from each group were tested after storing either at 37°C in artificial saliva for 7 days, followed by thermocycling, or in distilled water solution at 37°C for 24 h. For the evaluation of we...
Source: Journal of oral science - July 27, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Verification of osteoblast differentiation on airborne-particle abrasion, large-grit, acid-etched surface of titanium implants regulated by yes-associated protein and transcriptional coactivator with PDZ-binding motif.
Authors: Wei T, Li J, Sun H, Jiang M, Yang Y, Luo X, Liu T Abstract Although airborne-particle abrasion, large-grit, acid-etched (SLA) surface technology can promote implant osseointegration; its mechanism remains unclear. By preparing the SLA titanium (Ti) plate (SLA Ti) and Polished Ti plate (Polished Ti), this experiment investigates the expression and distribution of the Yes-associated protein (YAP) and transcriptional coactivator with the PDZ-binding motif (TAZ) in MC3T3-E1 cells. In addition, gene YAP and TAZ silencing on the SLA Ti was conducted to observe changes in the osteoblast differentiation markers, r...
Source: Journal of oral science - July 24, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Computational fluid dynamics analysis for the preoperative prediction of airway changes after maxillomandibular advancement surgery.
Authors: Ogisawa S, Shinozuka K, Aoki J, Yanagawa K, Himejima A, Nakamura R, Yamagata K, Sato T, Suzuki M, Tanuma T, Tonogi M Abstract Maxillomandibular advancement surgery is useful for treatment of sleep apnea. However, preoperative analysis and evaluation to facilitate decision-making regarding the direction and distance of maxillomandibular movement has primarily consisted of morphological analysis; physiological function is not evaluated. To improve preoperative prediction, this study used fluid simulation to investigate the characteristics and effects of airway changes associated with maxillomandibular moveme...
Source: Journal of oral science - July 24, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Oral surgery in patients with antiphospholipid syndrome.
This study reports a cohort of 16 patients with APS, who underwent oral surgery between 2010 and 2017 at the Nagasaki University Hospital. Because oral antithrombotic therapy was continued in the perioperative period, all wounds were strictly closed by suturing to prevent postoperative bleeding. Perioperative laboratory dates and medications were assessed. All patients achieved local postoperative hemostasis and did not exhibit systemic complications. Moreover, there were no postoperative systemic and/or local infections. Oral surgeons should suture oral wounds and ensure local hemostasis to prevent postoperative bleeding....
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Effects of a self-ligating appliance for orthodontic treatment of severe adult periodontitis.
This study was conducted to investigate the short-term effects of a self-ligating appliance for orthodontic treatment of severe adult periodontitis. Thirty patients diagnosed as severe periodontitis were recruited at Nanjing Stomatological Hospital, P. R.China, between January 2012 and January 2016. General clinical and demographic data were collected from the patients, all of whom were treated with a self-ligating appliance. Probing pocket depth (PPD), clinical attachment level (CAL), bleeding on probing (BOP) and plaque index (PI) were measured before appliance placement, and at 1 and 3 months after appliance placement, ...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Cross-cultural adaptation and validation of the Arabic version of the Index of Dental Anxiety and Fear (IDAF-4C).
This study aimed to investigate cross-cultural adaptation and validation of the Arabic version of the Index of Dental Anxiety and Fear (IDAF-4C). A total of 167 participants completed the questionnaire with a response rate of 72.6%. The participants were asked to complete the adapted Arabic version of the IDAF-4C and the modified dental anxiety scale (MDAS). The participants were asked to complete the second form of the Arabic version of the IDAF-4C over a period of 1 week to determine the reproducibility of the index. The internal consistency of the IDAF-4C was high (Cronbach's alpha, 0.94). The intraclass correlation coe...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Periodontal status and self-reported systemic health of periodontal patients regularly visiting dental clinics in the 8020 Promotion Foundation Study of Japanese Dental Patients.
Authors: Furuta M, Fukai K, Aida J, Shimazaki Y, Ando Y, Miyazaki H, Kambara M, Yamashita Y Abstract This nationwide cross-sectional survey investigated the association between periodontal disease and self-reported systemic health in periodontal patients who regularly visited private dental clinics in Japan. Data from 999 patients of 444 dental clinics were analyzed; the patients were aged 40 years or older, regularly visited dentists, and had diagnosed periodontal disease (defined as two or more teeth with a clinical attachment level ≥6 mm). Medical history was collected with a self-reported questionnaire. Numb...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Enhanced synergistic effects of xylitol and isothiazolones for inhibition of initial biofilm formation by Pseudomonas aeruginosa ATCC 9027 and Staphylococcus aureus ATCC 6538.
In this study, initial biofilms of Pseudomonas aeruginosa ATCC 9027 and Staphylococcus aureus ATCC 6538 in the presence of xylitol or xylitol and isothiazolones were determined using crystal violet staining in 96-well microplates and confocal laser scanning microscopy. Xylitol and isothiazolones exhibited enhanced synergistic inhibition of initial biofilm formation, and also the structure and production of extracellular polymeric substances by P. aeruginosa ATCC 9027 and S. aureus ATCC 6538 in a dose-dependent manner. In addition, xylitol and isothiazolones inhibited and restored the swimming motility of P. aeruginosa ATCC...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Relationship between Type D personality and dropout from dental treatment in middle-aged adults.
In conclusion, Type D personality might be related to dropout from dental therapy. PMID: 31217375 [PubMed - in process] (Source: Journal of oral science)
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Laboratory evaluation of dentin tubule occlusion after use of dentifrices containing stannous fluoride.
Authors: Takamizawa T, Tsujimoto A, Ishii R, Ujiie M, Kawazu M, Hidari T, Suzuki T, Miyazaki M Abstract The purpose of this study was to examine the effect of desensitizing dentifrices containing stannous fluoride (SnF2) on dentinal tubule occlusion. Two experimental dentifrices with the same ingredients but different SnF2 concentrations (Group II, 0.4% w/w; Group III, 0.454% w/w) were used; distilled water was used in the control group (Group I). Third molars were collected from Japanese and American dental patients. The crowns were removed and sectioned to obtain dentin discs, which were further cut into quarters...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Bone marrow-derived mesenchymal stem cells enhance bone marrow regeneration in dental extraction sockets.
Authors: Mashimo T, Sato Y, Akita D, Toriumi T, Namaki S, Matsuzaki Y, Yonehara Y, Honda M Abstract Bone marrow-derived mesenchymal stem cells (BMMSCs) remain the most widely used source of osteogenic cells in bone tissue engineering research. A cell-based treatment for alveolar ridge augmentation has received attention as an alternative to bone grafting. In the present study, BMMSC transplantation into tooth extraction sockets of C57BL/6J mice was evaluated for alveolar ridge regeneration. The first right maxillary molars were extracted, and then BMMSCs (PDGFRα+ Sca-1+ CD45- TER119- cells) isolated from femo...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Effect of different chelating agents on dentinal crack formation.
Authors: Gokturk H, Aydin U, Ozkocak I, Aydemir ME Abstract The present study aimed to evaluate the degree of crack formation during canal preparation using reciprocating files. A total of 120 incisor teeth were divided into eight groups according to irrigation protocol (n = 15). The irrigation solution and chelating agents included distilled water, sodium hypochlorite (NaOCl), citric acid, maleic acid, peracetic acid, ethylenediaminetetraacetic acid (EDTA) gel, and EDTA liquid. The root canals were prepared using reciprocating instruments while one of the agents was present within the root canals. A control group ...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Associations between caries experience, dietary habits, and metabolic syndrome in Japanese adults.
Authors: Iwasaki T, Hirose A, Azuma T, Ohashi T, Watanabe K, Obora A, Deguchi F, Kojima T, Isozaki A, Tomofuji T Abstract Dental caries could be a risk factor for metabolic syndrome (MetS); however, there is limited evidence of such a relationship in the literature. This cross-sectional study investigated the relationships among dental caries experience, dietary habits, and MetS in Japanese adults. A total of 937 participants aged 40-74 years underwent a health check, including dental examination. Decayed, missing, and filled teeth (DMFT) were used as an index of caries experience. The mean DMFT score was 14, and 1...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Influence of acute high-intensity exercise on salivary nitric oxide levels.
This study, employing an exercise versus control crossover design, was conducted to investigate the influence of acute high-intensity exercise on salivary nitric oxide (NO) levels. Nine healthy males (aged 23.8 ± 1.4 years) performed ergometer exercise at 80%VO2peak for 60 min, whereas controls sat at rest for 60 min. Saliva samples were collected before (Pre: 0800 h) and after (Post 0-h: 0900 h, Post 1-h: 1000 h, Post 2-h: 1100 h, Post 3-h: 1200 h) the interventions. Salivary NO levels were determined by colorimetric assay. It was found that the salivary NO levels in controls were decreased (P
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Induction of chondrogenic or mesenchymal stem cells from human periodontal ligament cells through inhibition of Twist2 or Klf12.
Authors: Takai H, Wijnen AJV, Ogata Y Abstract Periodontitis leads to destruction of periodontal ligament, cementum and alveolar bone. Regeneration of periodontal tissue is dependent on mesenchymal stem cells (MSC) present in the periodontal ligament, and transcription factors determine the direction of MSC differentiation. The present study was conducted to investigate the transcription factors that are crucial for maintaining the characteristics of the periodontal ligament. The mRNA levels of several transcription factors were measured in cultured human periodontal ligament (HPDL) cells, human gingival fibroblast...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Thermographic assessment of facial temperature in patients undergoing orthognathic surgery.
This study was conducted to assess the usefulness of thermography for quantifying facial temperature before and after orthognathic surgery and intermaxillary fixation, and the effects of these orthognathic procedures on facial temperature. Facial thermograms of 10 patients who underwent bilateral sagittal split ramus osteotomy (SSRO, one-jaw group) and another 10 patients who underwent Le Fort I osteotomy and bilateral SSRO (two-jaw group) were taken 1 day before orthognathic surgery (T1) and at release of intermaxillary fixation 7 days later (T2). Two thermograms taken 30 s (TG1) and 3 min (TG2) after the start of recordi...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Bond strength of CAD/CAM-manufactured composite resin and ceramic veneers to a zirconia framework.
This study investigated bond strength of CAD/CAM-manufactured composite resin and ceramic veneers to a zirconia framework and analyzed the effect of treatments of veneer surfaces. A CAD/CAM resin-based (AVE) composite or lithium disilicate ceramic (IEC) block was used as the veneer material. AVE and IEC specimens were assigned to receive one of three surface treatments (n = 22): no surface treatment, acid-etching with 9.5% hydrofluoric acid gel, and airborne-particle abrasion with alumina particles. Zirconia disks and AVE or IEC specimens in each group were bonded with a resin-based luting agent, and shear bond strength of...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Association between dental caries indicators and serum glycated hemoglobin-levels among patients with type 2 diabetes mellitus.
This study aimed to investigate the association between dental caries (DC) and glycated hemoglobin (HbA1c) among patients with type 2 DM (T2DM). A health center-based cross-sectional study was conducted comprising 91 eligible patients with T2DM (21 males and 70 females) with a mean age (± standard deviation) of 61.49 ± 9.71 years. A structured interview, screening for DM-related factors, and oral examination were performed. Serum HbA1c levels were used as an index for glycemic control. A comparison between patients with controlled T2DM, i.e., HbA1c ≤7.0% (n = 46), and uncontrolled T2DM, i.e., HbA1c>7.0%...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Effectiveness of a universal adhesive for repair bonding to composite and amalgam.
Authors: Kanzow P, Baxter S, Rizk M, Wassmann T, Wiegand A Abstract The study aimed to compare the repair bond strength of aged composite and amalgam repaired with resin composite after various mechanical and adhesive surface treatments. Specimens were aged by thermal cycling (10,000 cycles, 5-55°C) and randomly subjected to one of three surface treatments: diamond bur abrasion, aluminum oxide air abrasion, or silica coating. Conventional bonding or a universal adhesive with incorporated silane was applied afterward (each n = 16) and resin composite was attached. In the control groups (each n = 16), resin compo...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Monomer release from nanohybrid composites after bleaching.
Authors: Gul P, Karatas O, Alp HH, Cam IB, Ozakar-Ilday N Abstract The evaluation of the effect of bleaching on monomer release from two composite resins was performed by bleaching two nanohybrid composite resins Filtek Z550 and Tetric N-Ceram using two bleaching products Whiteness HP Maxx and Vivastyle. In total, 20 samples were made from each composite resin from which four groups were fabricated (two for each bleaching product). The samples were stored in a 75% ethanol solution, and the solutions were renewed after 1, 7, and 28 days. The monomer release was analyzed using high performance liquid chromatography. ...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research

Surface properties and gloss of CAD/CAM composites after toothbrush abrasion testing.
Authors: Okamura K, Koizumi H, Kodaira A, Nogawa H, Yoneyama T Abstract The purpose of this study was to evaluate the surface properties and gloss of CAD/CAM composites after toothbrush abrasion testing. Four CAD/CAM composites for molars (Cerasmart 300, Estelite P block, Katana Avencia P block, and KZR-CAD HR3 Gammatheta), one CAD/CAM composite for premolars (Shofu Block HC Hard), and one feldspathic ceramics (Vitablocs Mark II) were assessed. Knoop hardness number, gloss, and surface roughness (Ra, Rz, and Sa) were measured before and after toothbrush abrasion testing. Knoop hardness number values were in the ord...
Source: Journal of oral science - June 22, 2019 Category: Dentistry Tags: J Oral Sci Source Type: research