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https://www.readbyqxmd.com/read/28732176/a-comprehensive-craniofacial-study-of-22q11-2-deletion-syndrome
#1
A Lewyllie, J Roosenboom, K Indencleef, P Claes, A Swillen, K Devriendt, C Carels, M Cadenas De Llano-Pérula, G Willems, G Hens, A Verdonck
The 22q11.2 deletion syndrome (22q11.2DS) is one of the most frequent microdeletion syndromes and presents with a highly variable phenotype. In most affected individuals, specific but subtle facial features can be seen. In this observational study, we aim to investigate the craniofacial and dental features of 20 children with a confirmed diagnosis of 22q11.2DS by analyzing 3-dimensional (3D) facial surface scans, 2-dimensional (2D) clinical photographs, panoramic and cephalometric radiographs, and dental casts...
July 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28731896/freehand-versus-guided-surgery-factors-influencing-accuracy-of-dental-implant-placement
#2
William Choi, Bao-Chau Nguyen, Andrew Doan, Sabine Girod, Brice Gaudilliere, Dyani Gaudilliere
INTRODUCTION: Patient anatomy, practitioner experience, and surgical approach are all factors that influence implant accuracy. However, the relative importance of each factor is poorly understood. The present study aimed to identify which factors most critically determine implant accuracy to aid the practitioner in case selection for guided versus freehand surgery. METHODS: One practitioner's ideal implant angulation and position was compared with his achieved position radiographically for 450 implants placed using a conventional freehand method...
August 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28731872/bleeding-risk-assessment-in-hemophilia-a-carriers-from-dakar-senegal
#3
Moussa Seck, Blaise F Faye, Abibatou Sall, Diariétou Sy, Sokhna A Touré, Nata Dieng, Youssou B Guéye, Macoura Gadji, Awa O Touré, Cathérine Costa, Dominique Lasne, Chantal Rothschild, Saliou Diop
: Hemophilia A carriers have an abnormal X chromosome with a molecular abnormality of FVIII gene. These carriers, long considered to be free of bleeding risk, could have the same symptoms as mild hemophiliacs. This study aim to assess bleeding risk of hemophilia A carriers monitored at the Clinical Hematology of Dakar. This is a prospective study of a period of 6 months including 22 hemophilia A carriers aged between 8 and 48 years. Hemophilia carriers were recruited using the genealogical tree of hemophiliacs followed in the service...
July 20, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28731540/participation-of-osteoclastogenic-factors-in-immunopathogenesis-of-human-chronic-periapical-lesions
#4
S C L T Santos, L A Couto, J M Fonseca, F C A Xavier, A C L Figueiredo, V S Freitas, R A Freitas, J N Santos, A C G Henriques
BACKGROUND: Chronic periapical lesions (CPLs) are common lesions of the oral cavity and are the result of caries, tooth fracture, iatrogenic causes or factors causing contamination and pulp necrosis. Inflammatory cells participate in the expansion of CPLs by releasing factors that stimulate or inhibit osteolytic activity. The objective of this study was to investigate the participation of RANKL, TNF-α, cathepsin K, IL-33 and OPG in the development of radicular cysts (RCs) and periapical granulomas (PGs)...
July 21, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28731486/demineralized-dentin-and-enamel-matrices-as-suitable-substrates-for-bone-regeneration
#5
Nina Bono, Paolo Tarsini, Gabriele Candiani
BACKGROUND: In recent decades, tooth derivatives such as dentin (D) and enamel (E) have been considered as potential graft biomaterials to treat bone defects. This study aimed to investigate the effects of demineralization on the physical-chemical and biological behavior of D and E. METHODS: Human D and E were minced into particles (Ø<1 mm), demineralized and sterilized. Thorough physical-chemical and biochemical characterizations of native and demineralized materials were performed by SEM and EDS analysis and ELISA kits to determine mineral, collagen type I and BMP-2 contents...
July 20, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28730236/root-fractures-epidemiological-clinical-and-radiographic-aspects
#6
Sanda Mihaela Popescu, Oana Andreea Diaconu, Monica Scrieciu, Iulia Roxana Marinescu, Emma Cristina Drăghici, Anca Gabriela Truşcă, Alexandra Carina Bănică, Mihaela Vătu, Veronica MercuŢ
Chronic root fractures are a relative frequent dental condition, occurring both in vital teeth and in teeth with root canal treatment, with a difficult and frustrating diagnosis. Two clinical forms are described: crown-root fractures with crown origin and vertical root fractures with root origin. The aim of the study was to determine the prevalence of the root fractured extracted teeth in two dental clinics with different profile [oral rehabilitation (OR) and endodontics (E)] and to present some particular aspects of the root fractures...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28729806/evidence-provided-for-the-use-of-oscillating-instruments-in-restorative-dentistry-a-systematic-review
#7
REVIEW
Panagiotis Ntovas, Spyridon Doukoudakis, John Tzoutzas, Panagiotis Lagouvardos
Oscillating diamond instruments are considered gentle sources for the removal of demineralized tooth hard tissues and the preparation of cavity angles and margins needed in minimally invasive dentistry. However, there is a question if literature provides enough evidence for their efficacy in restorative dentistry procedures. A literature search until May 2016 was conducted, using PubMed, Scopus, and The Cochrane Central Register of Controlled Trials databases. The quality of the studies was assessed using the recommendation of the Oxford Centre for Evidence-based Medicine...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729805/dental-treatment-considerations-for-a-pediatric-patient-with-incontinentia-pigmenti-bloch-sulzberger-syndrome
#8
Amy Yi-Ling Chen, Kevin Chen
Incontinentia pigmenti (IP) is a uncommon gene disorder, heritage with X-linked dominant mode. IP patients have a characteristic dentition varying from marked hypodontia to delayed eruption and conical crowns on both dentitions. A 5½-year-old girl, whose mother and younger sister were also diagnosed with IP, has the whirling-like pigmented skin lesion over her trunk and four extremities. Four primary teeth and multiple permanent tooth germs were found to be congenital missing. Dental considerations of further treatment were discussed with her parents including the preservation of primary molars, possible interim prosthesis in mixed or permanent dentition, full mouth rehabilitation with orthodontic and prosthodontic combined treatment, and implant therapy in adulthood...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729804/a-case-of-tooth-fracture-occurred-upon-medicating-bisphosphonate-for-an-elderly-person-preservation-therapy-and-responses-for-stage-0-of-bisphosphonate-related-osteonecrosis-of-jaw
#9
Noriko Suzuki, Hitoshi Oguchi, Yu Yamauchi, Yasuyo Karube, Yukimi Suzuki, Noriyasu Hosoya
This case report aimed to report the progress of preservation therapy and response of symptoms and signs for Stage 0 of bisphosphonate-related osteonecrosis of jaw (BRONJ). A 68-year-old female was recognized having a tooth at the left upper first molar fracture upon medicating bisphosphonate (BP) in 2007. At that time, the extraction of the tooth was an absolute contraindication. Therefore, we performed preservation therapy. We observed the symptoms and signs every month. After 5 months, swelling and redness in the entire first molar tooth were seen and fistula formed partly...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729803/anterosuperior-rehabilitation-with-metal-free-fixed-prosthesis-based-on-zirconia
#10
Sthelen Nayara Cenci, Igor Alessandro Gontarsky, Marcella Goetz Moro, Lidia Olga Bach Pinheiro, Adriana Postiglione Bührer Samra
The loss of upper front dental elements causes functional and psychosocial problems to the affected individuals. In this case report, the treatment planning considered hard and soft tissue loss for a complex fixed partial denture (FPD) rehabilitation. The six-element, all-ceramic FPD was manufactured using a computer-aided design/computer-aided manufacturing system with zirconia framework, veneered with leucite-reinforced ceramic. Ceramic artificial gum was also produced to guarantee tooth-facial proportions as well as lip support, promoting both esthetics and phonetics...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729802/size-discrepancies-in-molars-and-first-key-to-optimal-occlusion
#11
Ahmet Arif Celebi, Sam H Lee, Chung How Kau
OBJECTIVE: The aim of this research project was to determine whether the sizes of the first molars allow clinicians to achieve the first goal of an ideal clinical outcome. MATERIAL AND METHODS: Seventy-eight sets of dental casts that have been presented to the American Board of Orthodontics were evaluated. A Boley gauge was used to measure the length from the mesiobuccal cusp to the distobuccal cusp of the maxillary first molar and the length from the mesiobuccal groove of the mandibular first molar to the occlusal embrasure between the mandibular first and second molars...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729792/evaluation-of-accuracy-of-shade-selection-using-two-spectrophotometer-systems-vita-easyshade-and-degudent-shadepilot
#12
Mohammad Hassan Kalantari, Seyed Ahmad Ghoraishian, Mina Mohaghegh
OBJECTIVE: The aim of this in vitro study was to evaluate the accuracy of shade matching using two spectrophotometric devices. MATERIALS AND METHODS: Thirteen patients who require a full coverage restoration for one of their maxillary central incisors were selected while the adjacent central incisor was intact. 3 same frameworks were constructed for each tooth using computer-aided design and computer-aided manufacturing technology. Shade matching was performed using Vita Easyshade spectrophotometer, Shadepilot spectrophotometer, and Vitapan classical shade guide for the first, second, and third crown subsequently...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729786/association-of-oral-health-behavior-and-the-use-of-dental-services-with-oral-health-literacy-among-adults-in-tehran-iran
#13
Mohammad Mehdi Naghibi Sistani, Jorma I Virtanen, Reza Yazdani, Heikki Murtomaa
OBJECTIVE: To assess the association of oral health behavior (OHB) and the use of dental services with oral health literacy (OHL) among Iranian adults. METHODS: This was a cross-sectional population study of a random sample of 1031 adults aged 18-65 in Tehran, Iran. We collected data on tooth brushing frequency, the consumption of sugary snacks and beverages, and time since last dental visit. To measure OHL, we used a validated OHL adults' questionnaire (OHL-AQ)...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28729051/inhibiting-effects-of-fructanase-on-competence-stimulating-peptide-dependent-quorum-sensing-system-in-streptococcus-mutans
#14
Yusuke Suzuki, Ryo Nagasawa, Hidenobu Senpuku
Streptococcus mutans produces glucosyltransferases encoded by the gtfB and gtfC genes, which synthesize insoluble glucan, and both insoluble and soluble glucans by conversion of sucrose, and are known as principal agents to provide strong biofilm formation and demineralization on tooth surfaces. S. mutans possess a Com-dependent quorum sensing (QS) system, which is important for survival in severe conditions. The QS system is stimulated by the interaction between ComD {Receptor to competence-stimulating peptide (CSP)} encoded by the comD and CSP encoded by the comC, and importantly associated with bacteriocin production and genetic competence...
July 17, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28728812/longitudinal-association-between-obesity-and-dental-caries-in-adolescents
#15
Ling-Wei Li, Hai Ming Wong, Colman P McGrath
OBJECTIVE: To investigate the longitudinal association between obesity and dental caries among adolescents. STUDY DESIGN: The present cohort study was conducted among a random sample of 12-year-old adolescents in Hong Kong. Two rounds of follow-up were performed when the participants were aged 15 and 18 years. A total of 668 participants were included at age 12 years, and 282 of them completed all 3 phases of data collection. Body mass index, waist circumference, waist-to-hip (WHR) ratio, waist-to-height ratio, and triceps skinfold thickness were measured as indices of obesity...
July 17, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28728750/trigeminocardiac-reflex-during-non-surgical-root-canal-treatment-of-teeth-with-irreversible-pulpitis
#16
James I-Sheng Huang, Hao-Hueng Chang, Chun-Pei Lin, Wan-Chuen Liao, Chia-Tze Kao, Tsui-Hsien Huang
BACKGROUND/PURPOSE: Trigeminocardiac reflex (TCR) is a unique clinical incident of acute change in hemodynamic balance, which may lead to hypotension, bradycardia, and even clinical crisis. Up to date, no study so far considers the impact of non-surgical root canal treatment (NSRCT) of irreversible pulpitis teeth under either local infiltration or block anesthesia on hemodynamic change possibly related to TCR. METHODS: This study enrolled 111 patients with 138 irreversible pulpitis teeth that were treated by two sessions of NSRCT...
July 17, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28727472/relieving-dry-mouth-varying-levels-of-ph-found-in-bottled-water
#17
Bailey Jean Fisher, Angela Spencer, Van Haywood, Gayathri Konchady
It is estimated that 30% of people older than 60 years suffer from hyposalivation or dry mouth. Drinking water frequently has been recommended as a safe, non-pharmacologic way to combat hyposalivation. The saliva in patients with dry mouth is acidic. Beverages consumed daily may have an erosive potential on teeth. The pH and the mineral content of the beverage determine its erosive potential. An acidic beverage, therefore, may have harmful effects on mineralized tooth structures, causing erosion of enamel, dentin, and cementum...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28727466/ceramic-veneers-with-gingiva-shaded-porcelain-to-replace-lost-interdental-papillae-a-case-report
#18
Stephen J Chu, Adam J Mieleszko
With implant-supported reconstructions, gingiva-shaded pink-colored restorative materials serve as an option for replacing both hard and soft tissues cosmetically. This article presents a case report describing restorative treatment for a patient who requested individual crowns and veneers after she had had multiple surgical interventions to replace a failing implant tooth No. 9. In addition to replacement of the implant prosthesis, this case involved restorative papillae reconstruction that was performed to treat interdental recession that had occurred after the surgeries...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28727461/risk-indicators-and-prevention-of-implant-soft-tissue-complications-interproximal-papillae-loss-and-midfacial-implant-mucosal-recessions
#19
James Mailoa, Richard J Miron, Hom-Lay Wang
Achieving a long-term esthetic implant restoration in the maxillary anterior area is sometimes unpredictable. This article reviews several risk indicators of implant mucosal recession and loss of interproximal papillae, and how to prevent these risks. Results obtained from the literature suggest that the following factors are strongly related to implant soft-tissue complications: buccally positioned implant placement, a thin gingival biotype, lack of an adequate amount of keratinized mucosa, implant placement after ridge augmentation procedures, an increased distance of tooth bone peak to the contact point, and an inadequate horizontal implant-tooth distance...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28727410/exosomes-mediate-epithelium-mesenchyme-crosstalk-in-organ-development
#20
Nan Jiang, Lusai Xiang, Ling He, Guodong Yang, Jinxuan Zheng, Chenglin Wang, Yimei Zhang, Sainan Wang, Yue Zhou, Tzong-Jen Sheu, Jiaqian Wu, Kenian Chen, Paulo G Coelho, Nicky M Tovar, Shin Hye Kim, Mo Chen, Yan-Heng Zhou, Jeremy J Mao
Organ development requires complex signaling by cells in different tissues. Epithelium and mesenchyme interactions are crucial for the development of the skin, hair follicles, kidney, lungs, prostate, major glands and the teeth. Despite myriad literature on cell-cell interactions and ligand-receptor binding, the roles extracellular vesicles in epithelium-mesenchyme interactions during organogenesis are poorly understood. Here, we discovered that ~100 nm exosomes were secreted by the epithelium and mesenchyme of a developing tooth organ, and diffused through the basement membrane...
July 20, 2017: ACS Nano
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