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Journal of Oral Science

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
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
Zeynep B Gönen, Canay Yılmaz Asan, Osman Etöz, Alper Alkan
The World Health Organization has defined oral leukoplakia (OL) as "a white patch or plaque of the oral mucosa that cannot be characterized clinically or pathologically as any other disease". A 21-year-old male with OL presented with a bilateral burning sensation in the buccal mucosa. The patient had amalgam restorations, and an epicutaneous patch test indicated a positive response to amalgam. The amalgam restorations were therefore removed and the cavities were refilled with a composite resin restorative material...
2016: Journal of Oral Science
Isabel C S Carvalho, Carolina da S M Martinelli, Noala V M Milhan, Adriana M P da S Marchini, Tamires P Dutra, Daniela M de Souza, Rosilene F da Rocha
Previous studies suggest that prenatal alcohol exposure affects fetal bone development, including bone quality. This study evaluated the chemical composition of mandibles from newborn rats after maternal 20% alcohol consumption before and throughout gestation. Nine rats were initially distributed into three groups: an Alcohol group, Pair-fed group, and Control group. The groups were fed prespecified diets for 8 weeks before and the 3 weeks during pregnancy. At age 5 days, eight newborns from each group were euthanized (total, n = 24)...
2016: Journal of Oral Science
Duygu Karakis, Canan Akay, Burcin Oncul, Abbas Y Rad, Arife Dogan
The aim of the present study was to compare the effects of some disinfectants, including ethanol extract of propolis (EEP), on the adhesion of Candida albicans to denture base resins. Seventy-two acrylic resin samples were prepared, half of which was polished and the other half was roughened. C. albicans strain ATCC 10231 was incubated on Sabouraud dextrose agar (SDA) at 37°C for 48 h. The adhesion period was completed by keeping the cells in this suspension for 90 min at 37°C. Specimens were then immersed in the following solutions: 1%, 2%, and 5% sodium hypochlorite; 4% chlorhexidine gluconate; and 10% EEP...
2016: Journal of Oral Science
Elizangela P Zuza, Eliane M Barroso, Mariana Fabricio, Ana Luiza V Carrareto, Benedicto E C Toledo, Juliana R Pires
Periodontal treatment may improve the metabolic control of dyslipidemia. The aim of this study was to evaluate the lipid profile and high-sensitivity C-reactive protein (hs-CRP) levels in obese and non-obese patients undergoing periodontal therapy. Patients with generalized chronic periodontitis were divided into obese (n = 28) and non-obese groups (n = 26). The periodontal parameters (visible plaque index, gingival bleeding index, probing depth, clinical attachment level, and bleeding on probing), anthropometric measurements (body mass index, waist circumference, and body fat), and serum analyses (triglycerides, total cholesterol, high-density lipoprotein, low-density lipoprotein, fasting glucose, glycated hemoglobin, and hs-CRP) were measured at baseline and 90 days after periodontal treatment...
2016: Journal of Oral Science
Kyozo Sasaki, Mitsuru Motoyoshi, Eri Horinuki, Yoshinori Arai, Noriyoshi Shimizu
This study examined the effects of a bite-jumping appliance combined with low-intensity pulsed ultrasound (LIPUS) stimulation on the mandibular condyle of growing rats using micro CT (mCT) and histological examinations. Twelve Wistar rats were divided into three groups of four individuals each: Group 1 was an untreated control group, Group 2 received bite-jumping appliances, and Group 3 received bite-jumping appliances and LIPUS stimulation (15 min/day, 2 weeks) to the temporomandibular region. We measured the length and three-dimensional bone volume of each rat's mandibular condyle using mCT...
2016: Journal of Oral Science
Ronell Bologna-Molina, Yasunori Takeda, Takahisa Kuga, Naoyuki Chosa, Masae Kitagawa, Takashi Takata, Akira Ishisaki, Toshinari Mikami
The Wilms' tumor 1 gene (WT1) was originally isolated and described as the gene responsible for Wilms' tumor. Although there is growing evidence linking the overexpression of WT1 to tumorigenesis, no reports on ameloblastoma are available at present. The aim of this study was to examine the expression of WT1 in various histological subtypes of ameloblastoma tissue specimens and in human ameloblastoma cell lines. Immunohistochemical analyses were performed on a total of 168 cases of ameloblastoma, one case of ameloblastic carcinoma, and five cases of tooth germs (control)...
2016: Journal of Oral Science
Elif Kalyoncuoğlu, Cangül Keskin, İsmail Uzun, Aydın S Bengü, Buğra Guler
This study aimed to evaluate superficial defects and the composition of Reciproc R25 and ProTaper Retreatment file systems (Dentsply Maillefer, Ballaigues, Switzerland) used for retreatment. A total of 100 maxillary incisor teeth were randomly divided into the following two groups: Reciproc R25 (n = 25) and ProTaper Retreatment instrument (n = 75) groups. The nickel-titanium (Ni-Ti) compositions of the files before and after use were analyzed using energy dispersive X-ray spectrophotometry (EDX). Chi-square, Mann-Whitney U, and Kruskal-Wallis tests were used to analyze the data...
2016: Journal of Oral Science
Polliane M Carvalho, Paula M Castelo, Guy H Carpenter, Maria Beatriz D Gavião
This study aimed to investigate masticatory function and taste and their possible relationship with salivary flow in young adults with good oral health. The study also examined whether anthropometric measurements and gender could influence the variables studied. A total of 171 subjects were selected (125 females, 46 males). Masticatory performance was evaluated with the sieve method, and perceived masticatory ability was measured using the visual analogue scale. Taste was evaluated using the drop test with four different flavors in three different concentrations, and unstimulated and stimulated saliva flows were measured...
2016: Journal of Oral Science
Şeyma Bozkurt Doğan, Figen Öngöz Dede, Umut Ballı, Erdim Sertoğlu
The aims of the present study were to determine the levels of vaspin and omentin-1 in gingival crevicular fluid (GCF) in patients with chronic periodontitis (CP) with and without type 2 diabetes mellitus (T2DM), and to evaluate GCF vaspin and omentin-1 levels after non-surgical periodontal therapy. The study included 60 subjects: 15 systemically and periodontally healthy individuals, 15 periodontally healthy patients with T2DM, 15 systemically healthy patients with CP, and 15 patients with both CP and T2DM...
2016: Journal of Oral Science
Shulan Chen, Jianxin Liu, Gang Dong, Bin Peng, Pishan Yang, Zhenggang Chen, Fang Yang, Dawei Guo
Ultrasonic irrigation and syringe irrigation were compared for their efficacy at cleaning root canal in vivo and in vitro. The in vivo study used 60 anterior teeth or premolars from 60 patients with periapical periodontitis who were randomly assigned to a syringe irrigation group (group S) or an ultrasonic irrigation group (group U). After instrumentation with a K-file using the step-back technique, the two groups received ultrasonic or syringe irrigation using 40 mL of 2.5% NaOCl respectively, followed by conventional lateral compaction...
2016: Journal of Oral Science
Ray S Hovijitra, Suwan Choonharuangdej, Theerathavaj Srithavaj
Although medicinal herbs with fungicidal effects have been ubiquitously employed in traditional medicine, such effects of culinary herbs and spices still have to be elucidated. Therefore, it is noteworthy to determine the antifungal efficacy of some edible herbs used in Thai cuisine against sessile Candida albicans cultures, and to inquire if they can be further utilized as naturally-derived antifungals. Fourteen essential oils extracted from Thai culinary herbs and spices were tested for their antifungal activity against C...
2016: Journal of Oral Science
Mei Xin Chong, Chong Dee Khoo, Kai Hoe Goh, Farhana Rahman, Yoshinobu Shoji
This study compared bite force in adults older than 60 years with that of young adults. The participants were 20 healthy adults (9 men) older than 60 years (median age, 66 years) and 44 healthy young adults (22 men; age range, 18-25 years; median age, 22 years) at the International Medical University, Malaysia. All participants had at least 20 teeth, and bite force was measured and evaluated using the Dental Prescale system. Average (SD) bite force was 420.5 (242.0) N for the older adults and 541.4 (296.3) N for the young adults...
2016: Journal of Oral Science
Moacyr J B M Rêgo, Antônio F Silva Filho, Ana P V Sobral, Eduardo I C Beltrão
The formation of new and functional structural components of several organs, such as parotid glands, can be influenced by the glycocode. This study analyzed the glycobiology of parotid salivary gland tissue during fetal development using specific biochemical probes (lectins and antibodies). Eleven parotid gland samples from human fetuses were obtained from spontaneous abortions at 14-28 weeks of gestation, and tissue sections were analyzed for lectin histochemistry and immunohistochemistry. From the 18th to 26th week, Canavalia ensiformis agglutinin, wheat germ agglutinin, Ulex europaeus agglutinin-I, peanut agglutinin, Sambucus nigra agglutinin, and Vicia villosa agglutinin lectin staining were predominantly observed in the apical and/or basement membranes of the ducts and tubulo-acinar units...
2016: Journal of Oral Science
Marina C Prado, Heloisa Gusman, Felipe G Belladonna, Maíra Prado, Fabíola Ormiga
This study compared the effectiveness of clinical observation, clinical microscopic observation, and tooth-clearing technique in determining the number of canals in mandibular incisors. Root canal ramifications were also analyzed. Using clinical and microscopic analyses, we determined the number of canal entrances in 277 mandibular incisors. In addition, tooth-clearing technique was used to determine the number of canals and frequency of ramifications in the samples. The kappa coefficient was used to compare the different methods with regard to frequency of canals...
2016: Journal of Oral Science
Halil I Kılınç, Tuğrul Aslan, Kerem Kılıç, Özgür Er, Emir Esim, Şahin Yıldırım
The study aimed to evaluate the effects of different post morphologies and placement lengths on the fracture resistance of teeth with oval canal morphology that had been restored with crowns. Extracted mandibular premolars with similar dimensions were decoronated. After the root canal treatment, the teeth were mounted on acrylic blocks. Samples were randomly divided into four groups (n = 10 each). In groups C-10 and C-5, 10-mm- and 5-mm-long circular post spaces were created. In groups O-10 and O-5, 10-mm- and 5-mm-long oval post spaces were ultrasonically created...
2016: Journal of Oral Science
Silvia C Pérez-González, Victoria Bolaños-Carmona, María M Pérez-Gómez, Santiago González-López
This study tested the null hypothesis that the opacity of RealSeal SE (RSSE) sealer makes light-curing inefficient, while the degree of conversion (DC) is similar regardless of curing method. Fourteen uniradicular teeth were sectioned at 15 mm from the apex. Root canals were instrumented using the Reciproc file system, bulk-filled with RSSE, and divided randomly into two groups (dual-cure or self-cure). DC was determined by micro-Raman spectroscopy at 24 h, 48 h, and 1 week after filling, at 6, 9, and 12 mm from the coronal end...
2016: Journal of Oral Science
Kosaku Sawada, Richard J Miron, Dominic Leiser, Jordi Caballé-Serrano, Dieter D Bosshardt, Benoit Schaller, Daniel Buser, Reinhard Gruber
Extracorporeal irradiation sterilizes resected tumor bone used as autografts in reconstruction surgery. Therapeutic irradiation is a standard technique in head and neck cancer therapy that aims to preserve organ function. Bone irradiation has a complex, mostly inhibitory, effect on remodeling and regeneration, although the underlying mechanisms are still not fully understood. It remains unclear if extracorporeal irradiation affects the paracrine-like activity of the corresponding autografts. We recently reported that bone-conditioned medium from autogenous bone chips contains a number of factors that might affect cell activity...
2016: Journal of Oral Science
Satoko Iwasa, Hirotaka Ota, Kensuke Nishio, Mariko Ohtsu, Masafumi Kusunoki, Takahiro Gojoubori, Tetsuo Shirakawa, Masatake Asano
Toll-like receptors (TLR) recognize microbe-associated molecular patterns and induce the innate immune response. Among them, TLR5 recognizes the Gram-negative bacterial component flagellin. The aim of this study was to examine the expression of TLR5 in mouse salivary gland (SG). The SG was excised from 8- to 10-week-old female C57BL/6 mice. Salivary gland epithelial cells (SGECs) were purified and subjected to reverse transcription polymerase chain reaction (RT-PCR). Western blotting was performed to detect TLR5 expression at the protein level in several organs...
2016: Journal of Oral Science
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