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dental AND occlusion

Ali Nabavizadeh
The charismatic and diverse ornithischian dinosaurs exhibited some of the most extreme examples of cranial anatomy, inspiring decades of investigation into their muscular anatomy. Current ornithischian jaw muscle reconstructions, although parsimonious, pose concerns of small adductor muscles and caudally-displaced insertions relative to mandibular proportions. Here, craniomandibular material of ornithischian genera spanning all subclades are reexamined for osteological correlates indicative of intracranial and oral soft tissues...
October 17, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Alma Y Ceballos-Jiménez, Laura E Rodríguez-Vilchis, Rosalía Contreras-Bulnes, Jesús Á Arenas Alatorre, Ulises Velazquez-Enriquez, Maria M García-Fabila
BACKGROUND: It has been reported that lasers can increase resistance to enamel acids, and when it is associated with fluoride, both are reported to work in synergy, achieving a reduction of the solubility of enamel. Currently, other remineralizing agents have been shown to effectively inhibit enamel demineralization. OBJECTIVES: The aim of the study was to evaluate acid resistance in the occlusal surface of permanent teeth, treated with remineralizing agents, erbium-doped yttrium aluminum garnet (Er:YAG) laser and combined treatments...
July 2018: Dental and medical problems
S Ntaoutidou, A Arhakis, K Tolidis, N Kotsanos
AIMS: To clinically evaluate the retention rates and caries-prevention effect of a resin-based, non-etch and rinse, self-etch primed pit and fissure sealant containing Sealant Pre-reacted Glass Ionomer Cement (S-PRG) fillers, in comparison to a conventional resin-based sealant over an 18-month period. METHODS: There were 81 children, aged 6-12 years old, who were randomly assigned to one of two sealant-groups, either the self-etch primed sealant (Beautisealant, Shofu) or the conventional etch and rinse sealant (Seal it, Spident)...
October 16, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
John K Brooks, Gary Warburton, Brian C Clark
PURPOSE: Takotsubo syndrome (TS) is an acute and potentially serious cardiac disorder that is often attributed to an exuberant catecholaminergic response to a severely physical or emotional event. The dental literature contains a paucity of information on TS; therefore, this article will provide an overview of this uncommon syndrome, including clinical presentation, demographic characteristics, etiopathogenesis, diagnosis, management, and recovery, particularly emphasizing its occurrence with oral and maxillofacial procedures...
September 20, 2018: Journal of Oral and Maxillofacial Surgery
Julie Bao Anh Do, Audrey Bellerive, Anne-Sophie Julien, Jacques E Leclerc
Objective To assess the dental class occlusion and lateral cephalometry of children with conservatively treated Pierre Robin sequence (PRS) and to identify associations between these findings and prepalatoplasty cleft palate measurements. Study Design Retrospective cohort study. Subjects and Methods Among 22 patients with PRS, the following data were prospectively collected: demographics and preoperative cleft palate measurements. After patients reached age 6 years, an orthodontist assessed dental occlusion class and performed a lateral cephalometric analysis...
October 16, 2018: Otolaryngology—Head and Neck Surgery
Zhengxi Chen, Jiajun Shi, Can Jin, Zhiyi Chen, Qian Tong, Zhujun Li, Zhenqi Chen
Clinically, patients with operated unilateral cleft lip and palate always present with a concave profile, depressed midface, maxillary hypoplasia, narrow upper dental arch, and class III malocclusion. In this clinical report, the authors describe the successful orthodontic treatment of a patient with unilateral cleft lip and palate. A boy, 7 years 11 months of age, with a history of unilateral cleft lip and cleft palate presented with a Class I malocclusion on Skeletal Class III base. A satisfactory occlusion and a favorable lateral profile were achieved after maxillary protraction (face mask) combined with fixed appliance treatment, including alveolar bone grafting surgery...
October 12, 2018: Journal of Craniofacial Surgery
Mikel Abasolo, Josu Aguirrebeitia, Javier Vallejo, Joseba Albizuri, Ibai Coria
Misfit is unavoidable in dental implant-supported prostheses due to machining process or inappropriate assembling, and the definition of an admissible misfit is still a controversial issue. This work aims to understand the behavior of the screws in dental implant-supported prostheses to estimate an admissible vertical misfit value in terms of screw fatigue failure. For that purpose, a finite element model of a dental implant-supported prosthesis was created and analyzed. Vertical misfits were introduced in different positions, the lower and upper screws were tightened to the bolting force values recommended by the manufacturer, and two different occlusal loads were analyzed...
October 15, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
Helena M Minyé, Gregg H Gilbert, Mark S Litaker, Rahma Mugia, Cyril Meyerowitz, David R Louis, Alan Slootsky, Valeria V Gordan, Michael S McCracken
PURPOSE: To: (1) determine which preparation techniques clinicians use in routine clinical practice for single-unit crown restorations; (2) test whether certain practice, dentist, and patient characteristics are significantly associated with these techniques. METHODS: Dentists in the National Dental Practice-Based Research Network participated in a questionnaire regarding preparation techniques, dental equipment used for single-unit crown preparations, scheduled chair time, occlusal clearance determination, location of finish lines, magnification during preparation, supplemental lighting, shade selection, use of intraoral photographs, and trimming dies...
October 11, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
Bjarni Elvar Pjetursson, Cristina Zarauz, Malin Strasding, Irena Sailer, Marcel Zwahlen, Anja Zembic
OBJECTIVES: The objective of this systematic review was to assess the influence of implant-abutment connection and abutment material on the outcome of implant-supported single crowns (SCs) and fixed dental prostheses (FDPs). METHODS: An electronic Medline search complemented by manual searching was conducted to identify randomized controlled clinical trials, prospective and retrospective studies with a mean follow-up time of at least 3 years. Patients had to have been examined clinically at the follow-up visit...
October 2018: Clinical Oral Implants Research
Hisashi Ozaki, Hiromasa Sakurai, Yukie Yoshida, Hideyuki Yamanouchi, Mitsuyoshi Iino
Maxillectomy for malignant tumor often results in a maxillary defect and serious oral dysfunction. A prosthesis is usually provided for postoperative oral rehabilitation of such patients with maxillary defects. However, the further the resected region extends, the less stable the prosthesis becomes, due to insufficient bone and tooth support. Therefore, in many cases, conventional resection dentures may not be adequate to restore the oral function. Effective utilization of dental and zygomatic implants may help to restore oral function in patients with severe maxillary defects...
2018: Case Reports in Dentistry
Emel-Olga Onay, Kivanc Yamanel, Yonca Korkmaz-Ceyhan, Kamran Gulsahi
Background: Dental surface conditioning by Er:YAG laser is currently being investigated, as not all of the mechanisms and effects of this technique have been clearly studied. Thus, the aim of the present study was to assess the cervical microleakage of Class II resin composite restorations in endodontically treated teeth following either the respective conventional conditioning or additional Er:YAG laser conditioning, in association with varied adhesives. Material and Methods: Standardized mesial-occlusal-distal cavities (two gingival walls positioned in dentin and enamel, respectively) were created in 60 extracted human premolar teeth...
August 2018: Journal of Clinical and Experimental Dentistry
Marlene Barroso, Luis-Ernesto Arriola-Guillén, Yalil-Augusto Rodríguez-Cárdenas, Gustavo-Armando Ruíz-Mora, Maria-Eugenia Guerrero, Carlos Flores-Mir
Background: The present study was performed to compare follicle dimensions of impacted mandibular third molar (IMTM) with different impaction angulations using cone beam computed tomography (CBCT). Material and Methods: Forty-nine individuals with IMTM (24 male, 25 female) were selected. Their age range was 25-55 years. The sample was divided into three IMTM groups either vertical (n=16), mesioangular (n=18) or horizontal (n=15) position based on Winter's classification (the angle between the longitudinal axis of the second and third molars)...
August 2018: Journal of Clinical and Experimental Dentistry
María Salcedo Lara, Rocío Briones Rodríguez, María Biedma Perea, Beatriz Solano Mendoza
OBJECTIVE: The present article aims at reporting the clinical case of a patient who suffered trauma at two years of age, causing almost complete apical displacement of the deciduous maxillary left central incisor and of the permanent incisor. METHODS: Ectopia secondary to intrusion was minimized by surgical removal of the ectopic tooth, and the left permanent canine was submitted to orthodontic traction to replace the extracted tooth. RESULTS: The treatment period lasted 36 months, resulting in correct occlusion and a good aesthetic outcome...
August 1, 2018: Dental Press Journal of Orthodontics
Olivia de Freitas Mendes Martins, Cauby Maia Chaves Junior, Rowdley Robert Pereira Rossi, Paulo Afonso Cunali, Cibele Dal-Fabbro, Lia Bittencourt
INTRODUCTION: Occlusal side effects or development of pain and/or functional impairment of the temporomandibular complex are potential reasons for poor compliance or abandonment of mandibular advancement splints treatment for snoring and obstructive sleep apnea. OBJECTIVE: This study aimed at providing a comprehensive review evaluating the craniofacial side effects of oral appliance therapy for snoring and obstructive sleep apnea. METHODS: An electronic search was systematically conducted in PubMed and Virtual Health Library from their inception until October 2016...
August 1, 2018: Dental Press Journal of Orthodontics
Dalia Kaisarly, Moataz El Gezawi, Indra Nyamaa, Peter Rösch, Karl-Heinz Kunzelmann
OBJECTIVES: Bond strength to enamel and dentin depends on the bonding approach or condition. This study investigated the effects of the boundary conditions, in terms of the bonding substrate and the bonding condition, on the shrinkage vectors of a flowable composite. MATERIALS AND METHODS: An experimental cylindrical cavity (diameter = 6 mm, depth = 3 mm) consisting of the enamel floor and the surrounding dentin cavity walls was prepared for the "enamel-floor" group...
October 9, 2018: Clinical Oral Investigations
Riccardo Ammannato, Daniele Rondoni, Federico Ferraris
Following the guidelines of the 'index technique' that were published in this journal in 2015, this article presents the 'digital index technique,' an updated no-prep restorative approach to the management of worn dentition. Patients with minimal, moderate, and severe hard tissue wear can be treated based on the application of minimally invasive or noninvasive adhesive composite restorations on posterior and anterior worn dentition. The technique allows for a purely additive treatment without sacrificing healthy hard tooth tissue...
2018: International Journal of Esthetic Dentistry
Yi-Fang Huang, Chung-Ta Chang, Chih-Hsin Muo, Hsiang-Hsi Hong, Yu-Fu Shen, Chia-Chang Lin, Shih-Ping Liu
PURPOSE: The aim of this study was to investigate how the physical variables of fibular reconstructed mandibles with dental implants affects the relative bite force in oral cancer patients. MATERIALS AND METHODS: Over 7 years of follow-up, 13 oral cancer patients were enrolled who included 51 successful implants in the fibular flap. The tactile sensor analyzer evaluated the bite force. The crown-implant ratio, fibular, and rehabilitated dental length were measured using radiographic images...
September 20, 2018: Journal of Cranio-maxillo-facial Surgery
Sara Regina Barancelli Todero, Bianca Lopes Cavalcante-Leão, Fabian Calixto Fraiz, Nelson Luis Barbosa Rebellato, Fernanda Morais Ferreira
BACKGROUND/AIM: Sleep quality exerts an influence on attention level and motor skills and is associated with accidental injuries in children. The aim of this study was to evaluate the association between traumatic dental injury and sleep behaviour in children. MATERIAL AND METHODS: A cross-sectional study was conducted in a small city in southern Brazil with a representative sample of schoolchildren aged eight to ten years (n = 537). Weight and height were measured and examinations were performed for the determination of clinical occlusion and traumatic dental injury...
October 9, 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
Kodai Hatta, Kazunori Ikebe, Yasuyuki Gondo, Kei Kamide, Yukie Masui, Hiroki Inagaki, Takeshi Nakagawa, Ken-Ichi Matsuda, Taiji Ogawa, Chisato Inomata, Hajime Takeshita, Yusuke Mihara, Motoyoshi Fukutake, Masahiro Kitamura, Shinya Murakami, Mai Kabayama, Tatsuro Ishizaki, Yasumichi Arai, Ken Sugimoto, Hiromi Rakugi, Yoshinobu Maeda
AIM: Previous studies have reported significant associations between tooth loss or periodontal status and cognitive function; however, animal experimental studies have shown that occlusion might be a more important factor in cognitive decline. The purpose of the present study was to investigate the influence of a lack of posterior occlusal support by residual teeth on the decline of cognitive function over a 3-year period among 80-year-old Japanese people. METHODS: Participants were community-dwelling older adults (n = 515, age 79-81 years)...
October 2018: Geriatrics & Gerontology International
Sisira Padavala, Gheena Sukumaran
Background: Molar incisor hypomineralization (MIH) is the hypomineralization of systemic origin of one to four permanent first molars, frequently associated with affected incisors. It is presented as demarcated enamel opacities of different colors, occasionally undergoing posteruptive breakdown. The characteristic feature of MIH is the clear demarcation between the affected and sound enamel. There is asymmetry of defects present in the molars and incisors where one molar or incisor can be severely affected, while the contralateral tooth may be clinically sound or have only minor defects...
September 2018: Contemporary Clinical Dentistry
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