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Journal of Oral Science

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https://www.readbyqxmd.com/read/28049968/polyacrylic-resins-regulate-transcriptional-control-of-interleukin-6-gp80-and-gp130-genes-in-human-gingival-fibroblasts
#1
Bruna Borelli, Fernando Zarone, Virginia Rivieccio, Francesco Riccitiello, Michele Simeone, Roberto Sorrentino, Sandro Rengo, Gianrico Spagnuolo, Alfredo Procino
Studies have failed to identify the molecular mechanisms that regulate the genotoxic and cytotoxic effects of methacrylate resins, which are important in the biocompatibility of dental materials. Interleukin (IL)-6 has a crucial role in the control of acute-phase protein response during inflammation. In humans, the synthesis and release of two major acute-phase proteins, C-reactive protein and serum amyloid A, are regulated by IL-6. This study focused on IL-6 and activation of its receptors gp80 and gp130 in human gingival fibroblasts in order to assess the effects of the commercial acid resins Jet Kit, Unifast, and Duralay on control of inflammation...
December 28, 2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28049967/stimulated-salivary-flow-rate-and-oral-health-status
#2
Yoshihiro Shimazaki, Bohan Fu, Koji Yonemoto, Sumio Akifusa, Yukie Shibata, Toru Takeshita, Toshiharu Ninomiya, Yutaka Kiyohara, Yoshihisa Yamashita
This study examined the relationship between stimulated salivary flow rate and oral health status in an adult population. Multinomial multivariate logistic regression analysis was used to examine the associations of salivary flow rate with dental caries status and periodontal status at the individual level among 2,110 Japanese adults with ≥10 teeth. Then, a spline model was used to examine the nonlinear relationship between salivary flow rate and teeth with dental caries or periodontal disease in multilevel analysis...
December 28, 2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28049966/five-year-longitudinal-study-of-dental-caries-risk-associated-with-streptococcus-mutans-and-streptococcus-sobrinus-in-individuals-with-intellectual-disabilities
#3
Yuki Oda, Fumiko Hayashi, Atsuko Wakita, Yukiko Nagatani, Mitsugi Okada
Streptococcus mutans (S. mutans) and Streptococcus sobrinus (S. sobrinus) are important etiologic agents in human dental caries. Using quantitative real-time polymerase chain reaction assays for the presence of those strains, we examined 145 outpatients with intellectual disability (ID), calculated the proportion of each of these strains to total bacteria, and compared dental caries incidence over 5 years. Plaque samples were collected from all erupted tooth sites, and dental examinations were performed annually to determine numbers of decayed, missing, and filled teeth (DMFT score; World Health Organization caries diagnostic criteria)...
December 28, 2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28049965/effect-of-pre-drilling-on-intraosseous-temperature-during-self-drilling-mini-implant-placement-in-a-porcine-mandible-model
#4
Zsuzsanna Gurdán, László Vajta, Ákos Tóth, Edina Lempel, Árpád Joób-Fancsaly, József Szalma
This in vitro study investigated intraos seous heat production during insertion, with and without pre-drilling, of a self-drilling orthodontic mini-implant. To measure temperature changes and drilling times in pig ribs, a special testing apparatus was used to examine new and worn pre-drills at different speeds. Temperatures were measured during mini-implant placement with and without pre-drilling. The average intraosseous temperature increase during manual mini-implant insertion was similar with and without pre-drilling (11...
December 28, 2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28049964/effect-of-nonsurgical-periodontal-treatment-on-clinical-periodontal-variables-and-salivary-resistin-levels-in-obese-asians
#5
Zohaib Akram, Nor A Baharuddin, Rathna D Vaithilingam, Zubaidah H A Rahim, Karuthan Chinna, Vignes G Krishna, Roslan Saub, Syarida H Safii
This study investigated changes in periodontal outcomes after nonsurgical periodontal treatment (NSPT) and evaluated associations of change in salivary resistin level with periodontal outcomes in obese Malaysians with chronic periodontitis. Sixty-two obese adults with chronic periodontitis were randomly divided into a test group (n = 31), which received NSPT, and a control group (n = 31), which received no treatment. Plaque score (PS), gingival bleeding index (GBI), probing pocket depth (PPD), and clinical attachment loss (CAL) were measured at baseline and at 6 and 12 weeks after NSPT...
December 28, 2016: Journal of Oral Science
https://www.readbyqxmd.com/read/27725370/effects-of-polymerization-method-on-flexural-and-shear-bond-strengths-of-a-fiber-reinforced-composite-resin
#6
Hiroaki Yanagida, Naomi Tanoue, Yoshito Minesaki, Yoko Kamasaki, Taku Fujiwara, Hiroyuki Minami
This study investigated the effects of indirect composite polymerization on the postcuring mechanical properties of a fiber-reinforced composite. An indirect composite seated on glass fibers preimpregnated with polymerized monomer was polymerized by 1) photoirradiation using a halogen-fluorescent polymerizing unit for 5 min, 2) method 1 plus secondary heating at 100°C for 15 min, 3) photoirradiation using a metal halide light unit for 60 s, or 4) preliminary polymerization using a halogen light unit for 20 s followed by method 3...
October 7, 2016: Journal of Oral Science
https://www.readbyqxmd.com/read/27725369/prevalence-and-risk-factors-for-peri-implant-diseases-in-japanese-adult-dental-patients
#7
Yorimasa Ogata, Yohei Nakayama, Junichi Tatsumi, Takehiko Kubota, Shuichi Sato, Tetsuya Nishida, Yasuo Takeuchi, Tokuya Onitsuka, Ryuji Sakagami, Takenori Nozaki, Shinya Murakami, Naritoshi Matsubara, Maki Tanaka, Toshiaki Yoshino, Junya Ota, Taneaki Nakagawa, Yuichi Ishihara, Taichi Ito, Atsushi Saito, Keiko Yamaki, Etsuko Matsuzaki, Toshirou Hidaka, Daisuke Sasaki, Takashi Yaegashi, Tadashi Yasuda, Toshiaki Shibutani, Kazuyuki Noguchi, Hisao Araki, Noriharu Ikumi, Yukihiko Aoyama, Hideki Kogai, Kenji Nemoto, Shinji Deguchi, Takashi Takiguchi, Matsuo Yamamoto, Keita Inokuchi, Takatoshi Ito, Takashi Kado, Yasushi Furuichi, Mikimoto Kanazashi, Kazuhiro Gomi, Yukie Takagi, Keita Kubokawa, Nobuo Yoshinari, Yoshiaki Hasegawa, Tetsushi Hirose, Toshinaga Sase, Hirokazu Arita, Toshiro Kodama, Kitetsu Shin, Yuichi Izumi, Hiromasa Yoshie
We investigated the prevalences and risk factors for peri-implant diseases in Japanese adult dental patients attending a follow-up visit at dental hospitals or clinics as part of their maintenance program. This cross-sectional multicenter study enrolled patients with dental implants who attended regular check-ups as part of a periodontal maintenance program during the period from October 2012 through September 2013. Patients with implants with at least 3 years of loading time were included in the study. The condition of peri-implant tissue was examined and classified into the following categories: healthy, peri-implant mucositis, and peri-implantitis...
October 7, 2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025444/histological-evaluation-of-three-techniques-for-caries-removal
#8
Etienne Medioni, Jean-Paul Rocca, Carlo Fornaini, Elisabetta Merigo
A number of concepts and devices have been proposed for caries removal. Among these, the Er:YAG laser is a potential alternative to conventional mechanical treatment. This study compared the effectiveness of the Er:YAG laser with that of low-speed rotary instruments for removal of carious tissue in 26 extracted human molars and premolars with severe decay (i.e., large occlusal or proximal decay but no pulpal contact). The teeth were divided into three groups of eight teeth, and two teeth were used as controls...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025443/direct-and-indirect-antibacterial-effects-of-various-concentrations-of-triple-antibiotic-pastes-loaded-in-a-methylcellulose-system
#9
Sarmad M Alyas, Benjamin I Fischer, Ygal Ehrlich, Kenneth Spolnik, Richard L Gregory, Ghaeth H Yassen
We investigated the direct and indirect (residual) antibacterial effects of various concentrations of triple antibiotic paste (TAP) loaded into a methylcellulose system. Enterococcus faecalis (E. faecalis) was grown on sterilized dentin blocks (n = 60) and treated with clinically used TAP (1,000 mg/mL), low concentrations of methylcellulose-based TAP (100, 10, and 1 mg/mL), placebo paste, or 1.5% NaOCl (n = 10). The pastes were then removed, and biofilm disruption assays were performed. Additional dentin blocks (n = 120) were pretreated with the same experimental groups (n = 20)...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025442/clinical-efficacy-of-a-1-matricaria-chamomile-l-mouthwash-and-0-12-chlorhexidine-for-gingivitis-control-in-patients-undergoing-orthodontic-treatment-with-fixed-appliances
#10
Paula Goes, Caio S Dutra, Mário R P Lisboa, Delane V Gondim, Renata Leitão, Gerly A C Brito, Rodrigo O Rego
This pilot study evaluated the clinical efficacy of a mouthwash containing 1% Matricaria chamomilla L. (MTC) extract in reducing gingival inflammation and plaque formation in patients undergoing orthodontic treatment with fixed appliances. This randomized, double-blind, placebo-controlled study enrolled a total of 30 males and females (age, 10-40 years) with fixed orthodontic appliances and a minimum of 20 natural teeth. The participants were allocated to three groups (n = 10 each) and asked to rinse with 15 mL of a placebo, 0...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025441/effects-of-auxiliary-device-use-on-smear-layer-removal
#11
Marina C Prado, Fernanda Leal, Heloisa Gusman, Renata A Simão, Maíra Prado
This study evaluated the effects of different auxiliary irrigation devices on smear layer removal with a chelating solution (QMix). Fifty single-rooted permanent human teeth were shaped with a sequence of nickel-titanium instruments. A 2% chlorhexidine gel was used as a chemical auxiliary substance during preparation. Samples were assigned to five groups (n = 10 each) according to final irrigation protocol, namely, distilled water (control group), QMix 1 min, QMix + passive ultrasonic irrigation (PUI), QMix + plastic endodontic finishing file (EC), and QMix 3 min...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025440/toll-like-receptor-4-polymorphism-is-associated-with-increased-susceptibility-to-chronic-obstructive-pulmonary-disease-in-han-chinese-patients-with-chronic-periodontitis
#12
Hui Yu, Mei Lin, Xuejin Wang, Songling Wang, Zuomin Wang
The aim of the present study was to evaluate the association of single nucleotide polymorphisms (SNPs) in toll-like receptor 4 (TLR4) with chronic obstructive pulmonary disease (COPD) in Han Chinese patients with chronic periodontitis (CP). Six candidate SNPs of TLR4-rs10759930, rs10983755, rs11536879, rs1927907, rs11536889 and rs7873784-and 18 haplotype-tagging SNPs (tagSNPs) were genotyped in 339 patients with chronic periodontitis only (CP group), and 373 CP patients with COPD (CP with COPD group). The genotype distribution and allele frequencies of TLR4 rs1927907 among the CP (AA: 26, 8...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025439/human-soluble-receptor-for-advanced-glycation-end-products-and-tumor-necrosis-factor-%C3%AE-as-gingival-crevicular-fluid-and-serum-markers-of-inflammation-in-chronic-periodontitis-and-type-2-diabetes
#13
Sandeep Singhal, Avani R Pradeep, Dharmendra Kanoriya, Vibhuti Garg
The present study aimed to evaluate the levels of soluble receptor for advanced glycation end products (sRAGE) and tumor necrosis factor-α (TNF-α) in serum and gingival crevicular fluid (GCF) in chronic periodontitis (CP) patients with and without type 2 diabetes mellitus (T2DM). A total of 70 subjects were divided into four groups: group 1 (n = 15; subjects with healthy periodontium); group 2 (n = 20; CP patients); group 3 (n = 20; CP patients with T2DM); and group 4 (n = 15; CP patients without T2DM). The serum and GCF levels of human sRAGE and TNF-α were assessed using enzyme-linked immunosorbent assay and correlated with clinical parameters, including probing depth, gingival index and clinical attachment level...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025438/effect-of-frequency-on-the-fatigue-strength-of-dentin-bonds
#14
Donal D Scheidel, Toshiki Takamizawa, Wayne W Bakmeier, Robert L Erickson, Akimasa Tsujimoto, Masashi Miyazaki
This study aimed to investigate the effect of frequency on shear fatigue strength (SFS). The SFS of a resin composite bonded to dentin was determined using three self-etch adhesive systems: G-ænial Bond, Scotchbond Universal, and Optibond XTR. The staircase method of fatigue testing was used to determine the SFS at frequencies of 5, 10, and 20 Hz for 50,000 cycles. The failed bonding sites observed were classified based on the type of bond failure as follows: adhesive failure, cohesive failure in composite, cohesive failure in dentin, or mixed failure (partially adhesive, partially cohesive)...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025437/diverse-calcification-patterns-of-ameloblastic-fibro-odontoma-on-radiographic-examination
#15
Masao Araki, Shunsuke Namaki, Toshihiko Amemiya, Kunihito Matsumoto, Kazuya Honda, Yoshiyuki Yonehara, Naoyuki Matsumoto, Masatake Asano
The occurrence of ameloblastic fibro-odontoma (AFO) in the oral region is unusual and accounts for 1-3% of all odontogenic tumors. AFO presents mixed radiopaque patterns within the lesion with diverse findings; therefore, it is important to compare this tumor with other odontogenic tumors that radiographically present with calcified bodies. Herein, we observed the calcification patterns within the lesion in seven AFO cases (five males, two females; mean age, 8.3 years; age range, 4-13 years). Periapical and panoramic radiographs were obtained from all seven cases...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025436/the-clinical-and-systemic-effects-of-periodontal-treatment-in-diabetic-and-non-diabetic-obese-patients
#16
Zekeriya Taşdemir, Funda Özsarı Taşdemir, İsmail Koçyiğit, Cevat Yazıcı, Cem A Gürgan
The purpose of the present study was to evaluate the response to periodontal management in obese individuals with poorly controlled diabetes mellitus (DM) and obese individuals without DM. Changes in clinical and biochemical parameters were also investigated. Seventeen obese patients with poorly controlled DM and 14 obese non-DM patients with generalized chronic periodontitis were enrolled. The anthropometric measurements, periodontal parameters, and serum levels of lipid (triglyceride, high-density lipoprotein cholesterol, total cholesterol, low-density lipoprotein cholesterol) and glucose (fasting plasma glucose [FPG], insulin, insulin resistance [IR], hemoglobin [Hb]A1c) metabolism, pro-inflammatory mediators (high-sensitivity C-reactive protein, tumor necrosis factor-α [TNF-α] and Pentraxim-3), and interleukin-6 were measured before and at 3 months, and 6 months after full-mouth scaling and root planing (FM-SRP) together with full-mouth disinfection (FMD)...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025435/a-prospective-study-of-factors-associated-with-orthodontic-mini-implant-survival
#17
Chia-Chun Tsai, Hong-Po Chang, Chin-Yun Pan, Szu-Ting Chou, Yu-Chuan Tseng
The orthodontic mini-implant (MI) is a widely used anchorage device in orthodontic treatment. This prospective study analyzed MI survival and factors associated with MI survival in 139 patients (114 females and 25 males; average age, 25.7 years; age range, 12-56 years) who had received orthodontic treatment with MIs. Survival analysis and Kaplan-Meier curves were used to identify clinical variables associated with MI survival. For the 254 MIs investigated, the overall success rate was 85.8%, and the 1-year cumulative survival rate was 81...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025434/il-1%C3%AE-tnf-%C3%AE-and-il-6-levels-in-gingival-fluid-and-serum-of-patients-with-ischemic-stroke
#18
Anna Wytrykowska, Maria Prosba-Mackiewicz, Walenty M Nyka
It has been documented that an increase of immune cells in periodontitis may stimulate the process of atherosclerosis and lead to ischemic stroke. The aim of this study was to investigate whether there is any significant difference in serum and gingival crevicular fluid (GCF) cytokine concentrations between patients with early ischemic stroke (IS) and a control group. Eighty-six patients were consecutively enrolled for this study, 50 with ischemic stroke and 36 as a control group with no previous stroke. Only dentulous patients were included...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025433/three-dimensional-changes-in-the-temporomandibular-joint-after-maxillary-protraction-in-children-with-skeletal-class-iii-malocclusion
#19
Hyunju Lee, Woo-Sung Son, Chun Kwak, Eun-Hee Kang, Seong-Sik Kim, Soo-Byung Park, Yong-Il Kim
We evaluated 3-dimensional changes in the temporomandibular joints of children with skeletal Class III malocclusion and maxillary deficiency after facemask therapy for maxillary protraction. Eighteen children with anterior crossbite and a Class III molar relationship underwent facemask therapy for maxillary protraction, after which they exhibited positive overjet and a Class II molar relationship. Three-dimensional cone-beam computed tomography images of the patients were obtained before (T1) and after (T2) facemask protraction, and the 3-dimensional coordinates of the anatomical landmarks in T1 and T2 images were compared...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28025432/visfatin-levels-in-gingival-crevicular-fluid-and-serum-before-and-after-non-surgical-treatment-for-periodontal-diseases
#20
Çiğdem Coşkun Türer, Umut Balli, Berrak Güven, Burcu Özkan Çetinkaya, Gonca Çayır Keleş
The purpose of this study was to evaluate visfatin levels at different stages of periodontal disease and in healthy tissues. In addition, the effect of non-surgical periodontal therapy on visfatin levels in gingival crevicular fluid and serum was investigated. Forty-five patients were divided into three groups based on clinical and radiographical findings. Group 1 comprised periodontally healthy individuals (n = 15); group 2 comprised patients with gingivitis (n = 15); and group 3 was composed of patients with generalized chronic periodontitis (n = 15)...
2016: Journal of Oral Science
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