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https://www.readbyqxmd.com/read/28430896/evidence-of-secular-trend-in-mandibular-pubertal-growth
#1
Raphael Patcas, Daniel B Wiedemeier, Goran Markic, Philipp Beit, Heidi Keller
Background: During puberty, mandibular growth follows a growth curve comparable to somatic growth. This study aimed to review the relationship between mandibular pubertal peak height velocity (PHV) and skeletal age, and to investigate the possibility of a secular trend. Methods: Retrospective analysis was performed of two historical craniofacial growth studies (Denver Growth Study; observational time: 1943-1965, and Zurich Growth Study; observational time: 1982-1984) of healthy untreated subjects...
April 20, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28420009/temporal-summation-and-motor-function-modulation-during-repeated-jaw-movements-in-patients-with-temporomandibular-disorder-pain-and-healthy-controls
#2
Yuanxiu Zhang, Sheng Shao, Jinglu Zhang, Lin Wang, Kelun Wang, Peter Svensson
Temporal summation of nociceptive inputs may be an important pathophysiological mechanism in temporomandibular disorders (TMD) pain; however, it remains unknown how natural jaw function relates to underlying pain mechanisms. This study evaluated changes in pain and movement patterns during repeated jaw movements in patients with painful temporomandibular joints (TMJ) compared with healthy controls. Twenty patients with TMD with TMJ pain, and an anterior disk displacement without reduction and 20 age- and gender-matched healthy volunteers were included...
March 31, 2017: Pain
https://www.readbyqxmd.com/read/28417225/comparative-proteomic-analysis-provides-insight-into-10-hydroxy-2-decenoic-acid-biosynthesis-in-honey-bee-workers
#3
Xiao-Hui Yang, Shi-Fa Yang, Rui-Ming Wang
10-Hydroxy-2-decenoic acid (10-HDA) is the major compound produced from the mandibular glands (MGs) of honey bee workers. However, little information is available on the molecular mechanisms of 10-HDA biosynthesis. In our study, based on investigating the 10-HDA secretion pattern and the morphological characteristics of MGs from honey bee workers of different ages, a comparative proteomic analysis was performed in the MGs of workers with different 10-HDA production. In total, 59 up-regulated protein species representing 45 unique proteins were identified in high 10-HDA-producing workers by 2-DE-MALDI-TOF/TOF MS...
April 17, 2017: Amino Acids
https://www.readbyqxmd.com/read/28416157/dentoskeletal-sequellae-after-wearing-of-a-mandibular-advancement-device-in-an-osahs-setting
#4
Amélie Laborde, Cyrille Tison, Elodie Drumez, Emilie Garreau, Joël Ferri, Gwenaël Raoul
Mandibular advancement devices (MAD) are recommended in certain cases for the treatment of obstructive sleep apnea and hypopnea syndrome (OSAHS). The aim of this study was to make a retrospective investigation into the dental and skeletal effects in patients suffering from OSAHS after wearing an MAD, and according to the type of device, rigid or semi-rigid. Cephalometric criteria on lateral cephalograms before and after at least 6 months of treatment were analyzed. Twenty-two patients were included. We observed average labial tipping of the lower incisors (+4...
April 13, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28414873/influence-of-pharyngeal-airway-respiration-pressure-on-class-ii-mandibular-retrusion-in-children-a-computational-fluid-dynamics-study-of-inspiration-and-expiration
#5
T Iwasaki, H Sato, H Suga, Y Takemoto, E Inada, I Saitoh, K Kakuno, R Kanomi, Y Yamasaki
OBJECTIVES: To examine the influence of negative pressure of the pharyngeal airway on mandibular retraction during inspiration in children with nasal obstruction using the computational fluid dynamics (CFD) method. SETTING AND SAMPLE POPULATION: Sixty-two children were divided into Classes I, II (mandibular retrusion) and III (mandibular protrusion) malocclusion groups. MATERIAL AND METHODS: Cone-beam computed tomography data were used to reconstruct three-dimensional shapes of the nasal and pharyngeal airways...
May 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28412268/how-is-third-molar-status-associated-with-the-occurrence-of-mandibular-angle-and-condyle-fractures
#6
Shuai Xu, Jun-Jie Huang, Yu Xiong, Ying-Hui Tan
PURPOSE: Third molars (M3s) have been hypothesized to be associated with the risk of mandibular angle fracture and mandibular condylar fracture. The authors systematically estimated the relative risk (RR) of M3 status for the development of mandibular angle fracture and mandibular condylar fracture through a meta-analysis of cohort studies. MATERIALS AND METHODS: In this systematic review, the PubMed, EMBASE, and Cochrane Library databases were searched from inception to October 2016...
March 23, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28409316/mental-foramen-and-lingual-vascular-canals-of-mandible-on-mdct-images-anatomical-study-and-review-of-the-literature
#7
Filiz Direk, Ismihan Ilknur Uysal, Ali Sami Kivrak, Zeliha Fazliogullari, Nadire Unver Dogan, Ahmet Kagan Karabulut
The mental foramen and lingual vascular canals are related to vessels and nerves in the mandibular body. The aim of the present study was to determine the number and location of these structures and to make measurements of them. The archived Multidetector Computed Tomography images of 100 adult (15- to 70-year-old) patients were evaluated retrospectively. The diameters of the mental foramens and their distances from the front, back, upper and lower reference points were measured. The distribution of mental foramens with respect to the teeth was also researched...
April 13, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28409195/stability-of-anterior-tooth-alignment-10%C3%A2-years-out-of-retention
#8
Ragnar Bjering, Leiv Sandvik, Marit Midtbø, Vaska Vandevska-Radunovic
OBJECTIVE: Long-term posttreatment stability of anterior tooth alignment is of major interest to both patients and orthodontists. In the present study we examined the long-term outcome 10 years postretention and investigated the possible influence of treatment-related factors on posttreatment stability of maxillary and mandibular anterior tooth alignment. METHODS: The sample comprised 51 patients treated with full fixed appliances in a university clinic. Average retention time was 1...
April 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28408148/the-influence-of-mandibular-third-molar-germectomy-on-the-treatment-time-of-impacted-mandibular-second-molars-using-brass-wire-a-prospective-clinical-pilot-study
#9
M Cassetta, F Altieri
The brass wire ligature is an efficient method to correct a moderately mesially impacted mandibular second molar (MM2). The aim of this prospective clinical pilot study was to evaluate the influence of mandibular third molar (MM3) germectomy on the treatment time for this procedure and to determine its impact on oral health-related quality of life (OHRQoL) using the short-form Oral Health Impact Profile (OHIP-14). The STROBE guidelines were followed. Impacted MM2 were assigned randomly to receive brass wire ligature treatment either with germectomy (group A) or without germectomy (group B)...
April 10, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28403247/early-complications-of-immediate-loading-in-edentulous-full-arch-restorations-a-retrospective-analysis-of-88-cases
#10
Iñaki Cercadillo-Ibarguren, Alba Sánchez-Torres, Rui Figueiredo, Eduard Valmaseda-Castellón
PURPOSE: To describe the clinical outcomes and complications related to provisional prostheses after full-arch implant-supported rehabilitation by means of an immediate loading protocol. MATERIALS AND METHODS: This retrospective cohort study included patients who were consecutively treated with full-arch implant-supported restorations with a minimum of four implants (Replace Select Tapered TiUnite, Nobel Biocare AB) per arch and conical abutments (multi-unit, Nobel Biocare AB) by means of an immediate loading protocol...
April 12, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28402144/expression-and-localization-of-yap-and-taz-during-development-of-the-mandibular-first-molar-in-rats
#11
B Zhang, B Y Sun, Y W Ji, Y P Zhang, X X Wang, X Xu, Y Wen
Yes-associated protein (Yap) and transcriptional coactivator with PDZ-binding motif (Taz) are two downstream factors in the Hippo signaling pathway. Yap and Taz participate in regulating organ size, stem cell self-renewal, proliferation and differentiation. We investigated the spatial-temporal expression and relative expression levels of Yap and Taz using immunohistochemistry and real-time polymerase chain reaction. We found Yap and Taz in the oral epithelium and mesenchyme at embryonic (E) day 14.5 (E14.5) and E16...
2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28392452/mars-a-protein-family-involved-in-the-formation-of-vertical-skeletal-elements
#12
Shai Abehsera, Shani Peles, Jenny Tynyakov, Shmuel Bentov, Eliahu D Aflalo, Shihao Li, Fuhua Li, Jianhai Xiang, Amir Sagi
Vertical organizations of skeletal elements are found in various vertebrate teeth and invertebrate exoskeletons. The molecular mechanism behind the development of such structural organizations is poorly known, although it is generally held that organic matrix proteins play an essential role. While most crustacean cuticular organizations exhibit horizontal chitinous layering, a typical vertical organization is found towards the surface of the teeth in the mandibles of the crayfish Cheraxquadricarinatus. Candidate genes encoding for mandible-forming structural proteins were mined in C...
April 6, 2017: Journal of Structural Biology
https://www.readbyqxmd.com/read/28390826/estimation-of-date-of-death-through-wound-healing-of-an-extraction-socket-a-case-report
#13
Joan Viciano, Ruggero D'Anastasio, Cristian D'Ovidio, Sara Costantini, Aldo Carnevale, Luigi Capasso
Surgical extraction of teeth due to dental pathologies is a relatively common procedure in modern man. The healing of the wound that results occurs in gradual and sequential stages, such that the analysis of this repair process can be very useful in forensic investigations on human remains. The following study reports on a particular case where the remodeling of a tooth socket allowed an estimation of the time that had elapsed from the day of the surgical extraction of the tooth to the time of death. The corpse was that of a woman of 34 years...
March 27, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28389025/the-effect-of-2-versus-4-implants-on-implant-stability-in-mandibular-overdentures-a-randomized-controlled-trial
#14
Wafa'a R Al-Magaleh, Amal A Swelem, Iman A W Radi
STATEMENT OF PROBLEM: Dental research is rich with articles that investigated the influence of host-site variables, some implant-related variables (implant length, diameter, taper, design, location, and surface topography), different loading protocols or surgical procedures, and measurement methodology on dental implant stability. However, the number of implants and its effect on implant stability remain unclear. PURPOSE: The purpose of this randomized clinical trial was to investigate the influence of implant number on implant stability by comparing 2 versus 4 implants in mandibular implant overdentures...
April 4, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28385440/quality-of-life-assessment-of-implant-retained-overdentures-and-fixed-metal-acrylic-resin-prostheses-in-patients-with-marginal-mandibulectomy
#15
Banu Karayazgan-Saracoglu, Arzu Atay, Cumhur Korkmaz, Yumushan Gunay
STATEMENT OF PROBLEM: Several factors affect the prosthetic outcome of patients with mandibular defects. However, it is questionable whether fixed or removable implant-supported prostheses meet the expectations and satisfaction of the patients. The perspectives of these patients are important in managing the prosthetic treatment strategies. PURPOSE: The purpose of this prospective clinical study was to evaluate the satisfaction and oral health-related quality of life of patients with marginal mandibulectomies with implant-retained overdentures and fixed metal-acrylic resin prostheses...
April 3, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28385436/influence-of-a-removable-prosthesis-on-oral-health-related-quality-of-life-and-mastication-in-elders-with-parkinson-disease
#16
Giselle R Ribeiro, Camila H Campos, Renata Cunha Matheus Rodrigues Garcia
STATEMENT OF PROBLEM: Parkinson disease (PD) symptoms, such as muscle rigidity, tremors in the lips and tongue, and involuntary mandibular movements, may cause oral health-related problems, mastication difficulties, and denture discomfort because of the difficulty in controlling a prosthesis with the oral musculature. PURPOSE: The purpose of this observational clinical study was to evaluate the influence of oral rehabilitation with a removable prosthesis on oral health-related quality of life (OHRQoL) and masticatory efficiency (ME) in elders with PD...
April 3, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28384976/computed-tomographic-evaluation-of-condylar-symmetry-and-condyle-fossa-relationship-of-the-temporomandibular-joint-in-subjects-with-normal-occlusion-and-malocclusion-a-comparative-study
#17
Vivek Reddy Ganugapanta, Swaroopa Rani Ponnada, Kranthi Praveen Raju Gaddam, Kiran Perumalla, Imran Khan, Naqeed Abdul Mohammed
INTRODUCTION: The relationship of the condyle and the mandibular fossa differs in shape with type of malocclusion and skeletal pattern. A review of literature shows till date there are no studies on Temporomandibular Joint (TMJ) condyle-fossa relation to the type of malocclusion based on growth pattern. Computed Tomography (CT) provides optimal imaging of the osseous components of the TMJ. AIM: The purpose of this study was to investigate the condyle-fossa relationship and the dimensional and positional symmetries between the right and left condyles in subjects with normal occlusion and malocclusion in different growth patterns utilizing the CT scans of the TMJ...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28380201/study-of-the-kinematic-variables-of-unilateral-and-habitual-mastication-of-healthy-individuals
#18
Fernanda Pasinato, Andréia Gussi de Oliveira, Clarissa C Santos-Couto-Paz, Jorge Luis Lopes Zeredo, Geovana de Paula Bolzan, Sergio Bruzadelli Macedo, Eliane C R Corrêa
Purpose: To describe and compare the temporal-spatial kinematic variables of mandibular movement during deliberate unilateral and habitual mastication in healthy young-adult individuals. Methods: The study sample was composed of eight male healthy volunteers aged 19 to 24 years. The kinematic data were obtained using a motion analysis system - Qualisys Track Manager (QTM) ProReflex MCU. Recordings were performed during deliberate unilateral mastication (UM) and habitual mastication (HM) of firm-consistency gummy candy...
March 30, 2017: CoDAS
https://www.readbyqxmd.com/read/28380089/relationship-between-articular-eminence-inclination-and-alterations-of-the-mandibular-condyle-a-cbct-study
#19
Saione Cruz Sa, Saulo Leonardo Sousa Melo, Daniela Pita de Melo, Deborah Queiroz Freitas, Paulo Sérgio Flores Campos
This study aimed at verifying the correlation among angulation of the articular eminence (AE), shape of the condyle and its degenerative bone diseases (DBDs), according to age and sex, through Cone Beam Computed Tomography (CBCT). Five hundred and twenty-eight temporomandibular joints (TMJ) were evaluated. The condyles were classified as: flat, convex, angled and rounded, and the AE angulation was measured. The DBDs evaluated were osteophytes, flattening, erosion, subcortical cysts and spinal sclerosis. There was no difference in the mean angulations in relation to age group (p>0...
March 30, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28377670/periodontal-status-and-quality-of-life-impact-of-fear-of-pain-and-dental-fear
#20
Casey D Wright, Daniel W McNeil, Cierra B Edwards, Richard J Crout, Katherine Neiswanger, John R Shaffer, Mary L Marazita
Background. Oral health-related quality of life (OHRQoL) is impacted by periodontal disease and orofacial pain. There is a limited research examining the impact of avoidance of care or physiological arousal related to the fear of pain response on periodontal-related OHRQoL. Methods. Data are from the Center for Oral Health Research in Appalachia family-based study focusing on 1,339 adults. Measures included a modified Periodontal Screening and Recording Index across sextants of dentition, dental fear survey, Fear of Pain Questionnaire-9, and Oral Health Impact Profile-14...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
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