journal
https://read.qxmd.com/read/38417878/possible-roles-of-short-chain-fatty-acids-produced-by-oral-bacteria-in-the-development-of-alveolar-osteitis
#1
JOURNAL ARTICLE
Takayuki Asayama, Ayaka Takada, Yoshikazu Mikami, Hirofumi Yamaguchi, Muneaki Tamura, Kunihito Matsumoto, Kiwa Miyake, Yoshiyuki Yonehara, Hiromasa Tsuda
PURPOSE: Alveolar osteitis (dry sockets) is a painful condition characterized by a limited immune response. It is typically caused by the removal of blood clots from extracted tooth sockets, which leads to the fermentation of trapped food remnants by oral bacteria in the cavities, producing high concentrations of short-chain fatty acids (SCFAs). This study examined the effects of SCFAs on immunity and bone metabolism. METHODS: Mouse macrophage Raw264.7 cells were treated with oral bacteria supernatants or SCFA mixtures, and inducible nitric oxide synthase (iNOS) levels were determined by western blot...
February 29, 2024: Journal of Oral Science
https://read.qxmd.com/read/38403676/elemental-composition-corrosion-resistance-and-mechanical-properties-of-computer-aided-design-and-computer-aided-manufacturing-fixed-retainers-versus-conventional-fixed-retainers
#2
JOURNAL ARTICLE
Yasuhiro Namura, Helen Pullisaar, Heidi Vanessa Holm, Morten Syverud, Aida Mulic, Vaska Vandevska-Radunovic
PURPOSE: To investigate the elemental composition, corrosion resistance, and mechanical properties of computer-aided design and computer-aided manufacturing (CAD-CAM) retainers versus conventional fixed retainers (FRs). METHODS: Eight different retainer wires were investigated. Energy dispersive X-ray spectroscopy was used to determine the elemental composition. Leakage was analysed according to ISO 10271:2020 guidelines. Hardness was tested using the Vickers method with a load of 0...
February 23, 2024: Journal of Oral Science
https://read.qxmd.com/read/38403675/impact-of-scanning-range-and-image-count-on-the-precision-of-digitally-recorded-intermaxillary-relationships-in-interocclusal-record-using-intraoral-scanner
#3
JOURNAL ARTICLE
Yusuke Koshiishi, Shinpei Tanaka, Yotaro Iwauchi, Kazuyoshi Baba
PURPOSE: The effect of scan range and the number of scanned images on the precision of in vivo intermaxillary relationship reproduction was evaluated using digital scans acquired with an intraoral scanner. METHODS: The study involved 15 participants with normal occlusion. Two different interocclusal recording settings were employed using the intraoral scanner (TRIOS 4): 'MIN,' focusing on the minimal scan range of the first molar region, and 'MAX,' including the scan range from the right first premolar to the right second molar...
February 23, 2024: Journal of Oral Science
https://read.qxmd.com/read/38325857/evaluation-of-the-root-dentin-bond-strength-and-intratubular-biomineralization-of-a-premixed-calcium-aluminate-based-hydraulic-bioceramic-endodontic-sealer
#4
JOURNAL ARTICLE
Yu-Na Lee, Min-Kyeong Kim, Hee-Jin Kim, Mi-Kyung Yu, Kwang-Won Lee, Kyung-San Min
PURPOSE: This study evaluated the dentin bonding strength and biomineralization effect of a recently developed premixed calcium aluminate-based endodontic sealer (Dia-Root Bio Sealer) in comparison with existing calcium silicate-based sealers. METHODS: The root canals of 80 mandibular premolars were filled with Dia-Root Bio Sealer, Endoseal MTA, EndoSequence BC Sealer, and AH Plus Bioceramic Sealer. Medial and apical specimens were then obtained by sectioning. The push-out bond strength was measured using the medial specimens, and the failure mode was recorded...
February 8, 2024: Journal of Oral Science
https://read.qxmd.com/read/38325856/biological-and-physical-properties-of-calcium-hydroxide-based-pulp-capping-materials-and-their-modifications
#5
JOURNAL ARTICLE
Dilek Akin, Cigdem Atalayin Ozkaya, Guliz Armagan, Dervis Birim, Mustafa Ates, Huseyin Tezel
PURPOSE: To evaluate the biological and physical properties of calcium hydroxide-containing pulp-capping materials and their modifications with different solutions and antioxidant Resveratrol (RES) addition. METHODS: Calcium hydroxide+distilled-water:C, calcium hydroxide+saline:S, calcium hydroxide+synthetic tissue fluid:STF, Dycal:D, calcium hydroxide+distilled-water+RES:C+RES, calcium hydroxide+saline+RES:S+RES, calcium hydroxide+synthetic tissue fluid+RES:STF+RES, Dycal+RES:D+RES were tested...
February 8, 2024: Journal of Oral Science
https://read.qxmd.com/read/38148029/sociodemographic-profiles-and-career-motivations-of-australian-dental-students
#6
JOURNAL ARTICLE
Helen Tran, Fariha Ahmed, Maryam Yousuf, Guun Chan, Rodrigo Mariño, Michael Wylie, Rita Paolini, Federica Canfora, Michael McCullough, Antonio Celentano
PURPOSE: Prior studies explored factors influencing dental study choice, but shifts from BDSc to DDS degrees in some countries impact demographics and motivations, potentially affecting the dental workforce. The aim of this study was to establish Australian DDS and BOH students' sociodemographics and career motivations. METHODS: Questionnaires conducted in mid-2019 assessed sociodemographic profiles and career motivations. Statistical analysis utilized descriptive statistics and Fisher's exact test...
December 27, 2023: Journal of Oral Science
https://read.qxmd.com/read/38233159/an-observational-study-of-oral-functions-in-patients-aged-from-20-to-49-years
#7
JOURNAL ARTICLE
Kazuhiko Yoshioka, Yoichiro Ogino, Masahiro Kawasaki, Yasunori Ayukawa
PURPOSE: The purpose of this study was to analyze oral functions (MOF: maximum occlusal force; MTP: maximum tongue pressure; and MF: masticatory function) in Eichner A subjects aged from 20 to 49 years. METHODS: The data of three oral functions in Eichner A patients aged from 20 to 49 years were extracted. The mean values, subjects with lower values than the thresholds, and the differences among ages, and between sexes were investigated retrospectively. RESULTS: Although the mean values of these oral functions in 183 subjects were higher than the thresholds, the numbers of the subjects with lower values than the thresholds were 30 in MTP, 19 in MOF, and only three in MF...
2024: Journal of Oral Science
https://read.qxmd.com/read/38233158/vertical-magnification-correction-in-vertical-dual-exposure-panoramic-radiography
#8
JOURNAL ARTICLE
Hideaki Kimoto, Shoichi Asakura, Tatsuhiko Sasaki, Ko Dezawa, Toshihiko Amemiya, Kunihito Matsumoto, Yoshinori Arai
PURPOSE: To clarify the magnification error caused by the degree of tilt of the incisor and the elevation of the X-ray focus position, and the verification effect of magnification correction when performing vertical dual-exposure panoramic radiography. METHODS: Panoramic radiographic images of a phantom embedding 26 steel balls were taken at different heights (0, 5, 10, 15, and 20 mm) and tilt angles (0°, 10°, 20°, and 30°) to evaluate vertical magnification in each condition...
2024: Journal of Oral Science
https://read.qxmd.com/read/38233157/analysis-of-definite-awake-bruxism-using-a-portable-electromyography-device
#9
JOURNAL ARTICLE
Kazuhiro Yoshida, Takashi Iida, Yuki Ishii, Osamu Komiyama
PURPOSE: This study aimed to compare awake bruxism events between subjective and objective evaluations using a questionnaire survey and a modified portable electromyography (EMG) device, and to examine correlations between sleep quality and awake bruxism. METHODS: The Epworth Sleepiness Scale (ESS), Pittsburgh Sleep Quality Index (PSQI), and awareness of awake bruxism as clarified via interviews were conducted on 34 participants as subjective evaluations. The EMG device was used to record left temporal muscle activity for 6...
2024: Journal of Oral Science
https://read.qxmd.com/read/38233156/influence-of-casein-phosphopeptide-amorphous-calcium-phosphate-on-the-surface-topography-and-composition-of-nickel-titanium-archwires-during-orthodontic-treatment-with-fixed-appliances
#10
JOURNAL ARTICLE
Evgenija Markovic, Tamara Peric, Sanja Kojic, Miljan Stosic, Ivana Scepan, Bojan Petrovic
PURPOSE: To investigate the surface topography and nickel content of nickel-titanium (NiTi) archwires exposed to either routine oral hygiene or a prophylactic regimen with casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) during orthodontic treatment. METHODS: This in vivo study involved 40 orthodontic patients with fixed appliances, who were randomly assigned to either a routine oral hygiene group or a CPP-ACP supplementary regimen group. Twenty new NiTi archwires served as controls...
2024: Journal of Oral Science
https://read.qxmd.com/read/38233155/influence-of-different-convergence-angles-of-abutment-teeth-and-cement-spaces-on-internal-adaptation-of-anterior-cad-cam-fixed-dental-prostheses
#11
JOURNAL ARTICLE
Keigo Ito, Taro Iwasaki, Jin Kitani, Junichi Honda, Kei Kubochi, Futoshi Komine
PURPOSE: The aim of this study was to investigate the influence of different convergence angles of abutment teeth and different cement spaces on internal adaptation of anterior fixed dental prostheses (FDPs) fabricated with a computer-aided design-computer-aided manufacturing (CAD-CAM) system. METHODS: Composite resin FDPs for 99 standardized maxillary central incisors were fabricated according to nine parameters: three total convergence angles (4 [DG4], 12 [DG12], and 20 degrees [DG20]) and three cement space settings (10 [CS10], 50 [CS50], and 90 µm [CS90])...
2024: Journal of Oral Science
https://read.qxmd.com/read/38233154/use-of-micro-computed-tomography-and-scanning-electron-microscopy-with-energy-dispersive-spectroscopy-to-distinguish-natural-white-spot-enamel-lesions-from-sound-enamel-in-human-premolars
#12
JOURNAL ARTICLE
Apiwat Chaiwat, Neeranart Thirasupa, Orapin Ajcharanukul
PURPOSE: The aim of the present study was to develop a novel method for distinguishing white spot lesions (WSLs) from sound enamel in human premolars using micro-computed tomography (micro-CT) and scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS), and to examine differences in surface morphology, chemical composition, and mineral density (MD) between these two areas. METHODS: Fourteen premolars with natural WSLs on the enamel surface of the crowns were examined...
2024: Journal of Oral Science
https://read.qxmd.com/read/38233153/assessment-of-a-highly-filled-flowable-composite-for-the-repair-of-indirect-composites
#13
JOURNAL ARTICLE
Özlem Kanar, Simge Meşeli, Bora Korkut, Serhat Köken, Dilek Tağtekin, Funda Yanıkoğlu
PURPOSE: To compare the shear-bond-strength (SBS) of a highly-filled-flowable composite (HFFC) and a paste-type composite for indirect composite repair and to evaluate the effect of different surface treatments (ST), concerning the composite repair protocol. METHODS: Eighty-four 5 × 5 × 2 mm cylindrical specimens were prepared using Gradia Plus and SR Nexco indirect composite materials. The samples were thermocycled 5,000 times. According to the ST, the samples were divided into three groups (control, bur, and air-abrasion)...
2024: Journal of Oral Science
https://read.qxmd.com/read/38030287/effect-of-pilot-guided-implant-placement-concept-on-the-accuracy-of-osteotomy-preparation-and-implant-placement
#14
JOURNAL ARTICLE
Shruti Sharma, Emilie Tan, Britney Tran, Hui Y Siow, Elshadaie Tafesse, Yoong H J Thong, Row J M Tan, Jungwoo Son, Lisa Todaro, Josephine Teo, Jaafar Abduo
PURPOSE: To evaluate the accuracy of osteotomy preparation and implant placement for 3 pilot-guided (PG) concepts, namely, a surgical template with a metal sleeve (MS), a surgical template with an in-built nonmetal sleeve (NMS), and a surgical template with an in-built nonmetal sleeve for round bur indentation (RB). METHODS: Surgical models with missing maxillary molars were studied. The MS templates were designed to accept metal sleeves, while the NMS and RB templates were designed with in-built nonmetal sleeves...
November 30, 2023: Journal of Oral Science
https://read.qxmd.com/read/38030286/effects-of-maxillofacial-prosthetic-treatment-on-oral-health-related-quality-of-life-and-masticatory-ability-of-patients-with-head-and-neck-tumors
#15
JOURNAL ARTICLE
Takahiro Chiba, Kuniyuki Izumita, Shigeto Koyama, Naoko Sato, Ryo Tagaino, Takanori Hatakeyama, Keiichi Sasaki
PURPOSE: Using multivariate analysis, this study investigated the effectiveness of maxillofacial prosthetic treatment in relation to oral health-related quality of life (OHR-QoL), masticatory ability (food intake status score and gum-jelly test score) and related factors in patients who had undergone surgery for head and neck tumors. METHODS: The study cohort comprised 112 patients who underwent surgical resection and prosthetic treatment among 224 patients with head and neck tumors seen at the Maxillofacial Prosthetics Clinic of Tohoku University Hospital in a 2-year period...
November 30, 2023: Journal of Oral Science
https://read.qxmd.com/read/38030285/case-report-of-a-patient-with-mandibulectomy-followed-up-for-11-years
#16
JOURNAL ARTICLE
Ziyi Bai, Mariko Hattori, Yuka I Sumita, Noriyuki Wakabayashi
Mandibular deviation and rotation following mandibulectomy can significantly impact oral function and quality of life. The postoperative course of a 57-year-old patient who underwent mandibulectomy for oral cancer and findings over 11 years of follow-up observation to monitor changes in the mandibular position are described here. Based on the observations, it is important to raise awareness regarding the necessity of continued monitoring of mandible position and regular adjustments of prostheses for patients who have undergone mandibulectomy...
November 30, 2023: Journal of Oral Science
https://read.qxmd.com/read/38030284/reduction-of-cervical-vertebra-ghost-images-in-panoramic-radiography-using-vertical-dual-exposure
#17
JOURNAL ARTICLE
Masao Kato, Shoichi Asakura, Hideaki Kimoto, Tatsuhiko Sasaki, Ko Dezawa, Toshihiko Amemiya, Kunihito Matsumoto, Yoshinori Arai
PURPOSE: To evaluate the image quality of vertical dual-exposure panoramic radiography (PR), which merges two PR images taken at different focus heights to reduce ghost images of cervical vertebrae (CV) and intervertebral spaces (IVS) in the incisor region. METHODS: PR images of an aluminum block, a CV phantom and a human head phantom were taken at 0 mm and merged with and subtracted from PR images taken at other heights (0, 5, 10, 15, and 20 mm) to create new images, e...
November 30, 2023: Journal of Oral Science
https://read.qxmd.com/read/38008425/carbonate-apatite-increases-gene-expression-of-osterix-and-bone-morphogenetic-protein-2-in-the-alveolar-ridge-after-socket-grafting
#18
JOURNAL ARTICLE
Tadashi Kitazawa, Hideki Takai, Tetsuro Kono, Hiroyuki Okada, Yorimasa Ogata
PURPOSE: After tooth extraction, preservation of the alveolar ridge by socket grafting attenuates bone resorption. Runt-related transcription factor 2 (RUNX2) and SP7/Osterix (OSX) are transcription factors playing an important role in osteoblast differentiation. The purpose of this study was to evaluate the effects of carbonate apatite (CO3 Ap) on osteoblast-related gene and protein expression after socket grafting. METHODS: Alveolar bone and new bone after CO3 Ap grafting were collected at the time of implant placement...
November 25, 2023: Journal of Oral Science
https://read.qxmd.com/read/37967923/age-differences-in-pain-sensitivity-and-effect-of-topical-lidocaine-on-the-tongue-in-healthy-female-subjects
#19
JOURNAL ARTICLE
Ichiro Okayasu, Mizuki Tachi, Takao Ayuse, Hiroyuki Wake, Osamu Komiyama, Antoon De Laat
PURPOSE: To assess the sensitivity and the effect of topical lidocaine on the tongue by quantitative sensory testing, comparing healthy middle-aged female subjects with healthy young female subjects. METHODS: Sixteen healthy female subjects including eight in their fifties and eight in their twenties participated. They participated in two sessions at a 2-week interval in randomized order: lidocaine (experimental session) or placebo gel (placebo session) was applied on the tongue tip for 5min...
November 15, 2023: Journal of Oral Science
https://read.qxmd.com/read/37866924/use-of-an-intraoral-scanner-and-cad-cam-for-simultaneous-restoration-with-a-personalized-titanium-post-core-and-a-zirconia-crown
#20
JOURNAL ARTICLE
Ling Lin, Yingying Zhuo, Pingping Cai, Xi Chen, Zhiqiang Zheng, Jie Lin
Customized posts-and-cores have been widely used for improved fitness within a prepared post space. However, in comparison to direct restoration, they necessitate an increased number of appointments for patients. A 24-year-old man presented with a maxillary left canine that had fractured due to trauma 10 months previously. For this case, a digital process was used for simultaneous restoration with a personalized titanium post-and-core and a zirconia crown achieved with an intraoral scanner (IOS) and computer-aided design/computer-aided manufacturing (CAD-CAM)...
October 22, 2023: Journal of Oral Science
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