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https://www.readbyqxmd.com/read/29150379/changes-in-maxillofacial-morphology-and-velopharyngeal-function-with-two-stage-maxillary-distraction-mandibular-setback-surgery-in-patients-with-cleft-lip-and-palate
#1
T Susami, Y Mori, K Ohkubo, M Takahashi, Y Hirano, H Saijo, T Takato
Maxillary distraction is increasingly used for the correction of severe maxillary retrusion in patients with cleft lip and palate. However, control of the maxillary movement is difficult, and the need to wear visible distractors for a long period of time causes psychosocial problems. A two-stage surgical approach consisting of maxillary distraction and mandibular setback was developed to overcome these problems. In this study, changes in maxillofacial morphology and velopharyngeal function were examined in 22 patients with cleft lip and palate who underwent this two-stage approach...
November 14, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29145570/tooth-wear-and-gingival-recession-in-210-orthodontically-treated-patients-a-retrospective-cohort-study
#2
Marco Mijuskovic, Meret C Gebistorf, Nikolaos Pandis, Anne M Renkema, Piotr S Fudalej
Aim: To assess the association between tooth wear (TW) and gingival recession (GR). Materials and Methods: Two hundred and ten orthodontically treated participants (100 males) were evaluated. GR and TW were rated independently by four raters on plaster models at four time points: before treatment (T1), mean age 13.8 years (SD = 3.7); after treatment (T2), mean age 16.7 years (SD = 3.9); 3 years after treatment (T3), mean age 19.7 years (SD = 4.2); and 7 years after treatment (T4), mean age 23...
November 14, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/29139168/hunter-gatherer-dental-pathology-do-historic-accounts-of-aboriginal-australians-correspond-to-the-archeological-record-of-dental-disease
#3
Judith Littleton
OBJECTIVES: Studies of hunter-gatherer oral pathology, particularly in Australia, often focus upon dental wear and caries or assume that historic studies of Aboriginal people reflect the precontact past. Consequently the range of population variation has been underestimated. In this paper dental pathology from human remains from Roonka are compared with a model of dental pathology derived from historic studies. The aim is to identify aspects of dental pathology indicative of regional or intra-population diversity...
November 15, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/29136013/monomer-conversion-dimensional-stability-strength-modulus-surface-apatite-precipitation-and-wear-of-novel-reactive-calcium-phosphate-and-polylysine-containing-dental-composites
#4
Kanokrat Kangwankai, Sarah Sani, Piyaphong Panpisut, Wendy Xia, Paul Ashley, Haralampos Petridis, Anne Margaret Young
PURPOSE: The aim was to assess monomer conversion, dimensional stability, flexural strength / modulus, surface apatite precipitation and wear of mono / tri calcium phosphate (CaP) and polylysine (PLS)-containing dental composites. These were formulated using a new, high molecular weight, fluid monomer phase that requires no polymerisation activator. MATERIALS AND METHODS: Urethane and Polypropylene Glycol Dimethacrylates were combined with low levels of an adhesion promoting monomer and a light activated initiator...
2017: PloS One
https://www.readbyqxmd.com/read/29134672/quantitative-aspects-of-the-ruminating-process-in-giraffes-giraffa-camelopardalis-fed-with-different-diets
#5
Dominik Schüßler, Hartmut Greven
Giraffes are ruminants feeding on fresh browse and twigs in the wild, but in zoos, their diet is mainly based on alfalfa hay, grains, and pellets occasionally supplemented by twigs and foliage. These diets, which differ in composition and digestibility, affect the behavior of the animals, tooth wear patterns, and chewing efficiency. We quantified several parameters of the rumination process in ten zoo housed giraffes of different sexes and ages fed either with alfalfa hay, fresh browse, or a combination of both...
November 14, 2017: Zoo Biology
https://www.readbyqxmd.com/read/29129975/forensic-age-estimation-of-chinese-malaysian-adults-by-evaluating-occlusal-tooth-wear-using-modified-kim-s-index
#6
Chai Kit Lu, Margaret Chia Soo Yee, Spoorthi Banavar Ravi, Rohit Pandurangappa
Background and Objective: Evaluation of dental attrition is an easy and relatively accurate approach to estimating the age of an adult either ante- or postmortem for some specific population. Dental attrition represents a progressive physiological age change that can be measured using variety of indices to aid as an adjunct in forensic age estimation. Some of the previously proposed indices have their own practical limitations. This paper focuses on using modified Kim's criteria to score dental attrition to estimate the age of Chinese Malaysian adults and validate it...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/29109336/corrosion-resistance-and-mechanical-properties-of-titanium-nitride-plating-on-orthodontic-wires
#7
Haruki Sugisawa, Hideki Kitaura, Kyosuke Ueda, Keisuke Kimura, Masahiko Ishida, Yumiko Ochi, Akiko Kishikawa, Saika Ogawa, Teruko Takano-Yamamoto
Titanium nitride (TiN) coating by ion plating has properties such as high hardness, wear resistance, corrosion resistance, and surface lubricity, therefore TiN coating is often used in various dental appliances and materials. In this study, we evaluated the corrosion behaviors and mechanical properties of TiN coated stainless steel (SS) and nickel titanium (Ni-Ti) orthodontic wires prepared by ion plating. TiN coating by ion plating improves the corrosion resistance of orthodontic wires. The corrosion pitting of the TiN coated wire surface become small...
November 3, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29091015/patient-reported-and-clinical-outcomes-of-implant-supported-fixed-complete-dental-prostheses-a-comparison-of-metal-acrylic-milled-zirconia-and-retrievable-crown-prostheses
#8
Virginia Lea Hogsett Box, Cortino Sukotjo, Kent L Knoernschild, Stephen D Campbell, Fatemeh S Afshari
The purpose of this retrospective study was to assess the incidence of biologic and technical complications for implant-supported fixed complete dental prostheses (IFCDPs) and their relationship to oral health-related quality of life (OHQoL) and patient-reported outcomes. Metal-acrylic (MA), retrievable crown (RC), monolithic zirconia (MZ), and porcelain veneered zirconia (PVZ) prostheses were included. Patients who received an IFCDP at least one year prior to recall were identified. Exclusion criteria were: (1) an opposing complete denture and (2) time in service >70 months...
November 1, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29084294/computer-aided-design-computer-assisted-manufacture-monolithic-restorations-for-severely-worn-dentition-a-case-history-report
#9
Samir Abou-Ayash, Johannes Boldt, Alexander Vuck
Full-arch rehabilitation of patients with severe tooth wear due to parafunctional behavior is a challenge for dentists and dental technicians, especially when a highly esthetic outcome is desired. A variety of different treatment options and prosthetic materials are available for such a clinical undertaking. The ongoing progress of computer-aided design/computer-assisted manufacture technologies in combination with all-ceramic materials provides a predictable workflow for these complex cases. This case history report describes a comprehensive, step-by-step treatment protocol leading to an optimally predictable treatment outcome for an esthetically compromised patient...
November 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29077365/prevalence-of-anterior-cross-bite-in-preadolescent-orthodontic-patients-attending-an-orthodontic-clinic
#10
S N Vithanaarachchi, L S Nawarathna
Introduction: Anterior cross bite is a common malocclusion and early treatment is indicated. Determining its prevalence is important to plan orthodontic services. Objective: To assess the prevalence and associated features of anterior cross bite in pre-adolescent patients attending an orthodontic clinic. Methods: A hospital based cross sectional study was conducted. Seven hundred and twenty one consecutive patients were examined for anterior cross bite...
September 30, 2017: Ceylon Medical Journal
https://www.readbyqxmd.com/read/29076127/the-applicability-of-dental-wear-in-age-estimation-for-a-modern-american-population
#11
Katie E Faillace, Jonathan D Bethard, Murray K Marks
OBJECTIVES: Though applied in bioarchaeology, dental wear is an underexplored age indicator in the biological anthropology of contemporary populations, although research has been conducted on dental attrition in forensic contexts (Kim et al., , Journal of Forensic Sciences, 45, 303; Prince et al., , Journal of Forensic Sciences, 53, 588; Yun et al., , Journal of Forensic Sciences, 52, 678). The purpose of this study is to apply and adapt existing techniques for age estimation based on dental wear to a modern American population, with the aim of producing accurate age range estimates for individuals from an industrialized context...
October 27, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29073184/buccal-dental-microwear-and-dietary-ecology-in-a-free-ranging-population-of-mandrills-mandrillus-sphinx-from-southern-gabon
#12
Alice M Percher, Alejandro Romero, Jordi Galbany, Gontran Nsi Akoue, Alejandro Pérez-Pérez, Marie J E Charpentier
Analyses of dental micro- and macro-wear offer valuable information about dietary adaptations. The buccal surface of the teeth does not undergo attrition, indicating that dental microwear may directly inform about food properties. Only a few studies have, however, investigated the environmental and individual factors involved in the formation of such microwear in wild animals. Here, we examine variation of buccal microwear patterns of mandibular molars in a large free-ranging population of mandrills (Mandrillus sphinx)...
2017: PloS One
https://www.readbyqxmd.com/read/29070010/longitudinal-study-of-gastroesophageal-reflux-and-erosive-tooth-wear
#13
Clive H Wilder-Smith, Andrea Materna, Lukas Martig, Adrian Lussi
BACKGROUND: Approximately 60% of patients presenting to dentists with erosive tooth wear have significant gastroesophageal reflux (GERD), despite minor reflux symptoms. No longitudinal studies of reflux-associated erosive tooth wear and of reflux characteristics have been reported to date. The aim of this study was to characterize the longitudinal course of GERD and of associated erosive tooth wear, as well as factors predictive of its progression, in a large group of patients. METHODS: Seventy-two patients presenting to dentists with clinically significant erosive tooth wear and increased esophageal acid exposure by 24-h multichannel intraluminal pH-impedance measurement (MII-pH) were re-assessed clinically and by MII-pH after 1 year treatment with esomeprazole 20 mg twice-daily...
October 25, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/29068070/geometric-morphometric-analysis-as-a-proxy-to-evaluate-age-related-change-in-molar-shape-variation-of-low-crowned-notoungulata-mammalia
#14
Alejo C Scarano, Bárbara Vera
Shape and age variation in dentition of Paleogene extinct native South American ungulates (Notoungulata) has been traditionally described using qualitative and quantitative approaches, and has played a controversial role in the systematics of several groups. Such is the case of the Notopithecidae, a group of notoungulates with low-crowned teeth, known from the middle Eocene of Patagonia (Argentina). In this group, as well as in other contemporary families, extreme morphological changes associated to increasing dental wear were originally assumed to represent taxonomic differences; thus, dozens of species were erected, clearly reflecting the difficulty of defining discrete characters...
October 25, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29056187/baking-soda-as-an-abrasive-in-toothpastes-mechanism-of-action-and-safety-and-effectiveness-considerations
#15
Anderson T Hara, Cecilia P Turssi
BACKGROUND: Toothpastes can be formulated with different abrasive systems, depending on their intended clinical application. This formulation potentially affects their effectiveness and safety and, therefore, requires proper understanding. In this article, the authors focused on abrasive aspects of toothpastes containing sodium bicarbonate (baking soda), which have gained considerable attention because of their low abrasivity and good compatibility, while providing clinical effectiveness (further detailed in the other articles of this special issue)...
November 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29054166/3d-enamel-thickness-in-neandertal-and-modern-human-permanent-canines
#16
Laura Buti, Adeline Le Cabec, Daniele Panetta, Maria Tripodi, Piero A Salvadori, Jean-Jacques Hublin, Robin N M Feeney, Stefano Benazzi
Enamel thickness figures prominently in studies of human evolution, particularly for taxonomy, phylogeny, and paleodietary reconstruction. Attention has focused on molar teeth, through the use of advanced imaging technologies and novel protocols. Despite the important results achieved thus far, further work is needed to investigate all tooth classes. We apply a recent approach developed for anterior teeth to investigate the 3D enamel thickness of Neandertal and modern human (MH) canines. In terms of crown size, the values obtained for both upper and lower unworn/slightly worn canines are significantly greater in Neandertals than in Upper Paleolithic and recent MH...
December 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/29049951/the-mechanics-of-dental-occlusion-and-disclusion
#17
Thomas R Katona, George J Eckert
BACKGROUND: The mechanical environment associated with occluding teeth is the foundation for a wide range of research topics, clinical practice and dogma, product development and marketing, and medico-legal issues. The purpose of this study was to experimentally examine the relationships between occlusal factors and their impact on the associated contact forces. METHODS: Matching pairs of 0°, 20°, 33° and 40° cusp first molar denture teeth were placed into Class I, II and III molar relationships...
October 10, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29043715/quantitative-light-induced-fluorescence-technology-for-quantitative-evaluation-of-tooth-wear
#18
Sang-Kyeom Kim, Hyung-Suk Lee, Seok-Woo Park, Eun-Song Lee, Elbert de Josselin de Jong, Hoi-In Jung, Baek-Il Kim
Various technologies used to objectively determine enamel thickness or dentin exposure have been suggested. However, most methods have clinical limitations. This study was conducted to confirm the potential of quantitative light-induced fluorescence (QLF) using autofluorescence intensity of occlusal surfaces of worn teeth according to enamel grinding depth in vitro. Sixteen permanent premolars were used. Each tooth was gradationally ground down at the occlusal surface in the apical direction. QLF-digital and swept-source optical coherence tomography images were acquired at each grinding depth (in steps of 100  μm)...
October 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29032963/exploring-sex-differences-in-diets-and-activity-patterns-through-dental-and-skeletal-studies-in-populations-from-ancient-corinth-greece
#19
D E Michael, C Eliopoulos, S K Manolis
Sex and temporal differences are assessed in relation to dietary habits and activity patterns in three ancient populations from Corinth, Greece. The skeletal sample spans time from the Geometric to the Early Byzantine Period (9th c. BCE-5th c. CE). Dental caries and tooth wear have been proven to be reliable dietary indicators. Similarly, spinal osteoarthritis, spinal facet remodeling and Schmorl's nodes, have been used to infer activity patterns.
October 2017: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
https://www.readbyqxmd.com/read/29017845/the-relationship-between-dentine-hypersensitivity-dietary-acid-intake-and-erosive-tooth-wear
#20
Saoirse O'Toole, David Bartlett
OBJECTIVES: To assess the interplay between dietary acid intake, toothbrushing and erosive tooth wear as aetiological factors in self-reported DH MATERIALS AND METHODS: This is a secondary analysis on previously collected data from 600 participants with (n=300) and without (n=300) severe erosive tooth wear. Participants recruited from restorative clinics of King's College London Dental Institute (REC Ref 14/EM/1171) were questioned on their self-reported DH, frequency and timing of dietary acid intake, habits associated with consumption of dietary acids and tooth brushing habits...
October 7, 2017: Journal of Dentistry
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