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https://www.readbyqxmd.com/read/28110070/mesoscale-porosity-at-the-dentin-enamel-junction-could-affect-the-biomechanical-properties-of-teeth
#1
Elsa Vennat, Wenlong Wang, Rachel Genthial, Bertrand David, Elisabeth Dursun, Aurélien Gourrier
: In this paper, the 3D-morphology of the porosity in dentin is investigated within the first 350 μm from the dentin-enamel junction (DEJ) by fluorescence confocal laser scanning microscopy (CLSM). We found that the porous microstructure exhibits a much more complex geometry than classically described, which may impact our fundamental understanding of the mechanical behavior of teeth and could have practical consequences for dental surgery. Our 3D observations reveal numerous fine branches stemming from the tubules which may play a role in cellular communication or mechanosensing during the early stages of dentinogenesis...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28106699/association-between-odontoma-and-impacted-teeth
#2
Gaetano Isola, Marco Cicciù, Luca Fiorillo, Giovanni Matarese
Odontoma is considered to be the most common odontogenic tumor of the oral cavity. Most odontomas are asymptomatic and are discovered during routine radiographic investigations and can cause disturbances in the eruption of the teeth, most commonly delayed eruption or deflection. By a retrospective study design, demographic and clinical data regarding patients who presented odontomas from year 1995 to 2015 were obtained in order and the influence of active therapy on the dentition and on the treatment of impacted teeth was analyzed...
January 18, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28105790/a-qualitative-study-of-patients-knowledge-and-views-of-about-oral-health-and-acceptability-of-related-intervention-in-an-australian-inpatient-alcohol-and-drug-treatment-facility
#3
Alison Li Sun Cheah, Ram Pandey, Mark Daglish, Pauline J Ford, Sue Patterson
Social factors, health behaviours and the direct effects of substances contribute to the poor oral health and restricted access to dental services experienced by people who are dependent on drugs and/or alcohol. Admission for inpatient withdrawal management provides an opportunity for intervention to promote oral health but to be effective it must be acceptable to patients. To support intervention design, we examined patients' views about oral health, practices and treatment access, and appropriateness of health-promoting intervention in this context...
January 20, 2017: Health & Social Care in the Community
https://www.readbyqxmd.com/read/28098463/absolute-configuration-of-native-oligomeric-proanthocyanidins-with-dentin-biomodification-potency
#4
Joo-Won Nam, Rasika S Phansalkar, David C Lankin, James B McAlpine, Ariene A Leme-Kraus, Cristina M P Vidal, Li-She Gan, Ana Bedran-Russo, Shao-Nong Chen, Guido F Pauli
The structurally complex oligomeric proanthocyanidins (OPACs) are promising biomimetic agents, capable of strengthening the macromolecular backbone of teeth via intermolecular and intermicrofibrillar cross-linking. This study establishes analytical methods capable of determining the absolute configuration of the catechin-type monomeric units of underivatized OPACs. This preserves the capacity of their biological evaluation, aimed at understanding the inevitably stereospecific interactions between the OPACs and dentin collagen...
January 18, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28091721/influence-of-tooth-dimension-on-the-initial-mobility-based-on-plaster-casts-and-x-ray-images-a-numerical-study
#5
Martin Hartmann, Cornelius Dirk, Susanne Reimann, Ludger Keilig, Anna Konermann, Andreas Jäger, Christoph Bourauel
AIMS: The goal was to determine the influence of different geometric parameters of the tooth on the initial tooth mobility and the position of the center of resistance employing numerical models based on scaled X-ray images and plaster casts. METHODS: The dimensions of tooth 21 were measured in 21 patients, using radiographs and dental casts. Length and mesiodistal width of the tooth were obtained from the X-ray image and the orovestibular diameter from the plaster cast...
January 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28089334/masticatory-function-and-oral-health-related-quality-of-life-in%C3%A2-patients-after-partial-maxillectomies-with-closed-or%C3%A2-open%C3%A2-defects
#6
Mohamed M Said, Takafumi Otomaru, Yesiboli Yeerken, Hisashi Taniguchi
STATEMENT OF PROBLEM: The healing pattern after surgical resection of tumors of the oral cavity involving the maxilla may vary from one patient to another. The result may be open communication between the oral and nasal cavities (open defect) or complete oronasal separation after healing of the defect area (closed defect). PURPOSE: The purpose of this clinical study was to compare masticatory function and oral health-related quality of life (OHRQoL) between patients with closed and open defects who had undergone a partial maxillectomy and were wearing dentomaxillary prostheses...
January 12, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28076542/-dental-decay-in-5-year-old-children-sociodemographic-factors-monitoring-points-and-parental-attitudes
#7
Vinícius Humberto Nunes, Gimol Benzaquen Perosa
Dental decay affects many children, especially those from the lower socioeconomic classes. In this cross-sectional study designed to investigate the role played by sociodemographic factors, parental attitudes, and monitoring points, which are an indicator of personal perception of what controls individual health, on the prevalence of tooth decay among 5-year-old pre-school children living in a midsized city in São Paulo, Brazil. The ceo-d index of 426 children was assessed; the parents reported sociodemographic characteristics and completed two questionnaires concerning monitoring points and parental attitudes...
January 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28073636/prognosis-of-double-crown-retained-removable-dental-prostheses-compared-with-clasp-retained-removable-dental-prostheses-a-retrospective-study
#8
Keita Ishida, Toshifumi Nogawa, Yoshiyuki Takayama, Masayasu Saito, Atsuro Yokoyama
PURPOSE: The present study compared the clinical prognosis of double crown-retained removable dental prostheses (D-DRPs) with that of clasp-retained removable dental prostheses (C-RDPs). METHODS: Clinical records of 201 patients who had received 52 D-RDPs with 144 abutment teeth (D-teeth) and 199 C-RDPs with 399 abutment teeth (C-teeth) at the Prosthetic Dentistry Clinic in Hokkaido University Hospital between April 2005 and June 2015 were analyzed. Survival and complication probabilities of the two types of prostheses and abutment teeth were evaluated using the Kaplan-Meier method and compared using the log-rank test...
January 7, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28070264/impact-of-oral-and-dental-health-on-quality-of-life-in-iranian-preschool-children-and-their-families
#9
Siyamak Nemati, Maryam Ghasempour, Sorayya Khafri
INTRODUCTION: Oral and dental health is one of the most important factors that affect the quality of life of preschool children. This study determined the effect of oral and dental health of preschoolers on their quality of life and that of their parents. METHODS: This descriptive-cross sectional study asked 304 mothers of children aged 2-5 years from Babol, Iran, to complete an Early Childhood Oral Health Impact Scale (ECOHIS) questionnaire. Higher raw scores for ECOHIS indicate more oral problems and lower quality of life as related to oral health...
November 2016: Electronic Physician
https://www.readbyqxmd.com/read/28066812/the-denture-associated-oral-microbiome-in-health-and-stomatitis
#10
Baochen Shi, Tingxi Wu, Jeffrey McLean, Anna Edlund, Youngik Young, Xuesong He, Hongyang Lv, Xuedong Zhou, Wenyuan Shi, Huiying Li, Renate Lux
While investigation of the microbiome on natural oral surfaces has generated a wealth of information, few studies have examined the microbial communities colonizing dentures and their relationship to oral health. To address this knowledge gap, we characterized the bacterial community associated with dentures and remaining teeth in healthy individuals and patients with denture stomatitis. The microbiome compositions of matched denture and tooth plaque samples of 10 healthy individuals and 9 stomatitis patients were determined by 16S rRNA gene pyrosequencing...
November 2016: MSphere
https://www.readbyqxmd.com/read/28064379/investigating-social-inequalities-in-older-adults-dentition-and-the-role-of-dental-service-use-in-14-european-countries
#11
Jing Shen, Stefan Listl
BACKGROUND: Oral disease, despite being largely preventable, remains the most common chronic disease worldwide and has a significant negative impact on quality of life, particularly among older adults. OBJECTIVE: This study is the first to comprehensively and at a large scale (14 European countries) measure the social inequalities in the number of natural teeth (an informative oral health marker) in the over 50-year-old population and to investigate the extent to which such inequalities are attributable to dental service use...
January 7, 2017: European Journal of Health Economics: HEPAC: Health Economics in Prevention and Care
https://www.readbyqxmd.com/read/28050494/prosthetic-status-needs-and-oral-health-related-quality-of-life-ohrqol-in-the-elderly-population-of-aluva-india
#12
Albin Geo Joseph, Chandrashekar Janakiram, Anil Mathew
INTRODUCTION: Oral Health Related Quality of Life (OHRQOL), being a patient-centred outcome has profound association with the existing prosthetic status and needs. AIM: To assess the association between the prosthetic status and needs with OHRQOL in the elderly population of Aluva, Kochi, Kerala, India. MATERIALS AND METHODS: A cross-sectional study was conducted among the elderly residing in the municipal wards of Aluva municipality, Kochi, Kerala, India...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28050319/the-hidden-x-suture-a-technical-note-on-a-novel-suture-technique-for-alveolar-ridge-preservation
#13
Jung-Chul Park, Ki-Tae Koo, Hyun-Chang Lim
PURPOSE: The present study investigated the impact of 2 different suture techniques, the conventional crossed mattress suture (X suture) and the novel hidden X suture, for alveolar ridge preservation (ARP) with an open healing approach. METHODS: This study was a prospective randomized controlled clinical trial. Fourteen patients requiring extraction of the maxillary or mandibular posterior teeth were enrolled and allocated into 2 groups. After extraction, demineralized bovine bone matrix mixed with 10% collagen (DBBM-C) was grafted and the socket was covered by porcine collagen membrane in a double-layer fashion...
December 2016: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28035305/gardner-syndrome-associated-with-multiple-osteomas-intestinal-polyposis-and-epidermoid-cysts
#14
Kwang-Joon Koh, Ha-Na Park, Kyoung-A Kim
Gardner syndrome is known as a variant of familial adenomatous polyposis. This syndrome is characterized by multiple intestinal polyposes, osteomas, and epidermoid cysts. In addition, dental abnormalities include an increased frequency of multiple odontomas, as well as supernumerary and impacted teeth. The authors report the case of a 7-year-old male patient with Gardner syndrome. Radiographic findings revealed multiple osteomas in both sides of the maxilla, multiple diffuse enostoses in both jaws, and a complex odontoma in the left mandibular body...
December 2016: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28035303/the-effects-of-impacted-premaxillary-supernumerary-teeth-on-permanent-incisors
#15
Yun-Hoa Jung, Ji-Yeon Kim, Bong-Hae Cho
PURPOSE: The aim of this study was to examine the radiographic features associated with impacted premaxillary supernumerary teeth, to determine the relationship between their characteristics and their effects on permanent incisors, and to investigate the types of orthodontic treatment that patients received after the extraction of impacted supernumerary teeth. MATERIALS AND METHODS: The clinical records and radiographs of 193 patients whose impacted premaxillary supernumerary teeth were removed were retrospectively reviewed, and 241 impacted supernumerary teeth were examined...
December 2016: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28032898/age-related-morphological-histological-and-functional-changes-in-teeth
#16
REVIEW
Thiago Saads Carvalho, Adrian Lussi
Throughout lifetime, the teeth are continuously exposed to numerous chemical and physical impacts, which cause the wear of the dental hard tissues, gingival recession and other oral changes with sometimes subsequent problems. Age-related wear of tooth surfaces reduce the dental enamel thickness and expose deeper layers of enamel, which have different physical and chemical properties than the surface enamel. Gingival recession is the main causal factor of root caries and dentine hypersensitivity. Age-related changes in dentine include the formation of secondary dentine and the reduction of tubular lumen diameter (dentine sclerosis), which lead to a reduction in the volume of the pulp chamber...
December 29, 2016: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28032040/the-olympic-legacy-journal-metrics-in-sports-medicine-and-dentistry
#17
REVIEW
Joel Thomas, Tom W M Walker, Stuart Miller, Alistair Cobb, Steven J Thomas
Systematic analysis of integral aspects within sport enables improvement in performance. One key aspect is the management and prevention of injuries. Bibliometrics is a systematic method for evaluating research output. It may be expected that the quantity and quality of sports injury research over time may strongly correlate with the timing of the Olympic games. This study was conducted to determine the effect of the Olympic legacy on academic sports medicine and evidence to prevent injuries of the face and teeth...
November 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28027172/an-uncommon-occurrence-of-three-fourth-molars-concomitant-to-hypodontia-in-a-nonsyndromic-patient
#18
Ligia Buloto Schmitd, Agnes Assao, Gabriel Ramalho-Ferreira, Leonardo Perez Faverani, Denise Tostes Oliveira
Bilaterally mandibular and maxillary fourth molars, concomitant to hypodontia, are uncommon. These dental anomalies, called hypohyperdontia, are rare and etiology is not well defined. Several complications may occur as a consequence of supernumerary teeth, such as teeth impaction, resorption of adjacent teeth, and development of cysts and tumors. The authors present an uncommon occurrence of three-fourth molars concomitant to hypodontia and dentigerous cyst associated with impacted mandibular second and third molars in a nonsyndromic patient...
December 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28026850/diastema-size-and-type-of-upper-lip-midline-frenulum-attachment
#19
Anna Sękowska, Renata Chałas
BACKGROUND: Diastema is a space between teeth. The most often is maxillary midline diastema between upper central incisors. One of the main causes of diastema is enlarge upper lip frenulum attachment. The aim of the study was to assess frenulum attachment in patients with diastema and investigate if type of upper lip frenulum attachment has an impact on the width of diastema. MATERIALS AND METHODS: Upper lip frenulum attachment was assessed clinically in two groups of adult patients: study group with diastema and control group without diastema...
December 27, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28025437/diverse-calcification-patterns-of-ameloblastic-fibro-odontoma-on-radiographic-examination
#20
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
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