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Dental occlusion

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https://www.readbyqxmd.com/read/28724864/anatomic-and-histological-study-of-lingual-nerve-and-its-clinical-implications
#1
Yoshiaki Shimoo, Masahito Yamamoto, Masashi Suzuki, Masato Yamauchi, Akihiro Kaketa, Masaaki Kasahara, Masamitsu Serikawa, Kei Kitamura, Satoru Matsunaga, Shinichi Abe
Although the risk of injuring the lingual nerve in the mandibular molar area during dental treatment is high, it can be repaired by nerve grafting. However, from the perspective of clinical dentistry, the pathway and histomorphometric characteristics of this nerve remain to be documented in detail. The purpose of the present study was to morphologically elucidate the pathway of the lingual nerve to clarify its significance in a clinical setting. A histomorphometric analysis was also performed in consideration of nerve grafting...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28721987/evaluation-of-occlusal-groove-patterns-of-mandibular-first-and-second-molars-in-an-indian-population-a-forensic-anthropological-study
#2
Rashmi Gs Phulari, Rajendrasinh Rathore, Mili D Takvani, Shivani Jain
BACKGROUND: The study of dental morphological characteristics is important in anthropological research as it can provide information on the phylogenetic relationship between species, as well as variations and diversities within a population. AIMS AND OBJECTIVES: To determine the prevalence of six types of mandibular second molars in Gujarat state and the results can be used in both forensic anthropological researches and clinical aspects of dental sciences. MATERIALS AND METHODS: This descriptive investigation was undertaken among 1000 students (13-25 years old) in high schools and dental institutes of Gujarat state...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28721107/bite-force-and-dental-implant-treatment-a-short-review
#3
REVIEW
Dennis Flanagan
Dental implants are placed endosseously, and the bone is the ultimate bearer of the occlusal load. Patients are not uniform in the maximum bite force they can generate. The occlusal biting load in the posterior jaw is usually about three times of that found in the anterior. It is possible for supporting implants to be overloaded by the patients' biting force, resulting in bone loss and failure of the fixture. Bite force measurement may be an important parameter when planning dental implant treatment. Some patients can generate extreme biting loads that may cause a luxation of the fixture and subsequent loss of osseointegration...
2017: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/28717794/the-influence-of-maxillary-incisor-torque-on-the-esthetic-perception-%C3%A2-of-the-smile
#4
Javier Giron de Velasco, Pablo de la Cuadra, Gorka Urizar
PURPOSE: An esthetically pleasing smile is one of our patients' main goals. However, it is not always clear that the esthetic perceptions of patients and clinicians are the same. The purpose of this study was to evaluate and quantify the discrepancies in the esthetic perception of maxillary incisor torque among professionals, and between professionals and the general public. MATERIALS AND METHODS: A photograph of a 30-year-old woman was digitally manipulated to obtain nine smile images and nine full-profile images with various maxillary incisor torques, while maintaining the overjet...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28713737/maxillary-distraction-osteogenesis-in-unilateral-cleft-lip-and-palate-patients-with-rigid-external-distraction-system
#5
Shadi Alkhouri, Peter D Waite, Matthew B Davis, Ejvis Lamani, Chung How Kau
AIM: Distraction osteogenesis (DO) is a treatment option for patients with maxillary hypoplasia secondary to cleft lip and palate (CLP). PURPOSE: The aim of this study is to present a technique for maxillary DO using Le Fort I osteotomy with rigid external distraction (RED) system. SUBJECTS AND METHODS: The patient presented in this paper was an Asian female with CLP aged 13 years and 6 months. She presented with severe midfacial deficiency with a Class III dental malocclusion with a negative overjet and concave facial profile...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713734/treatment-of-micrognathia-by-intraoral-distraction-osteogenesis-a-prospective-study
#6
M Baskaran, S Gidean Arularasan, T K Divakar, Rohini Thirunavukkarasu
PURPOSE: Maxillofacial deformities are always psychologically and physically distressing to the patients and is also challenging to the treating surgeons. The term Micrognathia means a "small jaw". True micrognathia, where the maxilla or the mandibular skeleton does not grow to the full size can be congenital or acquired. Distraction osteogenesis also called as callus distraction or callostasis or osteodistraction or distraction histogenesis is a biological process of regenerating newly formed bone and adjacent soft tissue by a gradual and controlled traction of surgically separated bone segments...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28711896/computer-tomographic-characteristics-of-root-length-incisors-and-canines-of-the-upper-and-lower-jaws-in-boys-and-girls-with-different-craniotypes-and-physiological-bite
#7
Аlla V Маrchenko, Іgor V Gunas, Tetyana O Petrushanko, Oksana А Serebrennikova, Yulia Yu Trofimenko
INTRODUCTION: In recent years, in world literature appeared research, which focuses on the study of relationships craniotypes with odonto-metric indicators, size, shape of the dental arches and occlusion. However, most of the experts focus on the study of individual features of the structure of the teeth-jaw system in people with different types of faces and aspects of sexual dimorphism and ethnic characteristics. Studies containing information about cranio-typological variability of the roots of teeth we did not encounter...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28706781/assessment-of-condyle-masseter-and-temporal-muscles-volumes-in-patients-with-juvenile-systemic-lupus-erythematosus-a-cross-sectional-study
#8
Sandra Lucia Golin, Nailu Angélica Sinicato, Karyna Valle-Corotti, Acácio Fuziy, Ana Carla Nahas-Scocate, Simone Appenzeller, Andre Luiz Ferreira Costa
AIMS: The purpose of this study was to evaluate the effect of the corticosteroid therapy for both treatment of juvenile systemic lupus erythematosus and disease activity on two masticatory muscles and condyle of the temporomandibular joint. METHODS: A total of 21 controls and 48 juvenile systemic lupus erythematosus patients were investigated. Volumes of the temporal and masseter muscles and condyle of the subjects were assessed by using a 3D reconstruction in magnetic resonance imaging...
May 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28706294/assessment-of-occlusion-with-the-t-scan-system-in-patients-undergoing-orthognathic-surgery
#9
Jimoh Olubanwo Agbaje, Elke Van de Casteele, Ahmed S Salem, Dickson Anumendem, Eman Shaheen, Yi Sun, Constantinus Politis
Dental occlusion varies among individuals, and achieving correct physiological occlusion after osteotomy is essential for the complex functioning of the stomatognathic system. The T-Scan system records the centre of force, first contact, maximum bite force, and maximum intercuspation. The aim of the present study was to investigate the usefulness and consistency of T-Scan in assessing occlusion before and after orthognathic surgery. Occlusal information was evaluated for 30 healthy adults with normal occlusion and 40 patients undergoing orthognathic surgery...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28698331/efficacy-of-conventional-treatment-with-composite-resin-and-atraumatic-restorative-treatment-in-posterior-primary-teeth-study-protocol-for-a-randomised-controlled-trial
#10
Nathalia Miranda Ladewig, Cíntia Saori Sahiara, Laysa Yoshioka, Isabel Cristina Olegário, Isabela Floriano, Tamara Kerber Tedesco, Fausto Medeiros Mendes, Mariana Minatel Braga, Daniela Procida Raggio
INTRODUCTION: Despite the widespread acceptance of conventional treatment using composite resin in primary teeth, there is limited evidence that this approach is the best option in paediatric clinics. Atraumatic restorative treatment (ART) using high-viscosity glass ionomer cement has gradually become more popular because it performs well in clinical studies, is easy to handle and is patient friendly. Therefore, the aim of this randomised clinical trial study is to compare the restoration longevity of conventional treatment using composite resin with that of ART in posterior primary teeth...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28697751/influence-of-functional-dentition-on-satisfaction-with-oral-health-and-impacts-on-daily-performance-among-brazilian-adults-a-population-based-cross-sectional-study
#11
Loliza Luiz Figueiredo Houri Chalub, Raquel Conceição Ferreira, Andréa Maria Duarte Vargas
BACKGROUND: Dental esthetics, chewing and speech should be preserved in a dentition denominated functional and are closely related to satisfaction with oral health (SOH), impacts caused by oral problems and have a possible association with Oral Health-Related Quality of Life. Thus, the purpose of the present study was to investigate the influence of different concepts of functional dentition (FD) on both SOH and impacts on daily performance (IDP) among Brazilian adults. METHODS: A cross-sectional study was conducted with 9564 adults (35-44 years)...
July 11, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28697204/preliminary-clinical-application-of-removable-partial-denture-frameworks-fabricated-using-computer-aided-design-and-rapid-prototyping-techniques
#12
Hongqiang Ye, Jing Ning, Man Li, Li Niu, Jian Yang, Yuchun Sun, Yongsheng Zhou
PURPOSE: The aim of this study was to explore the application of computer-aided design and rapid prototyping (CAD/RP) for removable partial denture (RPD) frameworks and evaluate the fitness of the technique for clinical application. MATERIALS AND METHODS: Three-dimensional (3D) images of dentition defects were obtained using a lab scanner. The RPD frameworks were designed using commercial dental software and manufactured using selective laser melting (SLM). A total of 15 cases of RPD prostheses were selected, wherein each patient received two types of RPD frameworks, prepared by CAD/RP and investment casting...
July 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28691474/cone-morse-implant-connection-system-significantly-reduces-bacterial-leakage-between-implant-and-abutment-an-in-vitro-study
#13
A Baj, A Bolzoni, A Russillo, D Lauritano, A Palmieri, F Cura, F J Silvestre, A B Giannì
Osseointegrated implants are very popular dental treatments today in the world. In osseointegrated implants, the occlusal forces are transmitted from prosthesis through an abutment to a dental implant. The abutment is connected to the implant by mean of a screw. A screw is the most used mean for connecting an implant to an abutment. Frequently the screws break and are lost. There is an alternative to screw retained abutment systems: the cone-morse connection (CMC). The CMC, thanks to the absence of the abutment screw, guarantees no micro-gaps, no micro-movements, and a reduction of bacterial leakage between implant and abutment...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28689914/vertical-repositioning-accuracy-of-magnetic-mounting-systems-on-4-articulator-models
#14
Wonsup Lee, Ho-Beom Kwon
STATEMENT OF PROBLEM: Research of the ability of a cast mounted on an articulator on maintaining the identical position of a cast mounted on an articulator after repeated repositioning is lacking, despite the possible effects this may have on the occlusion of a mounted cast. PURPOSE: The purpose of this in vitro study was to verify and compare the vertical repositioning accuracy of 4 different, commercially available articulator magnetic mounting plate systems...
July 6, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28688180/effect-of-silver-diamine-fluoride-sdf-on-the-dentin-pulp-complex-ex-vivo-histological-analysis-on-human-primary-teeth-and-rat-molars
#15
Glenda Rossi, Aldo Squassi, Patricia Mandalunis, Andrea Kaplan
The aim of this study was to determine the effect of SDF on the dentin-pulp complex using two models: teeth after SDF application (ex vivo) and experimental animal molars. A descriptive study was performed using two models. In the first model, primary teeth (ex vivo) with enamel-dentin caries, without pulp involvement and previously treated with 38% SDF, were evaluated by means of two techniques: (a) Scanning Electron Microscopy (SEM) and energy-dispersive X-ray detector (EDS) to determine qualitative and quantitative composition, and (b) brightfield optical microscopy (OM) after decalcification...
April 2017: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28682279/temporomandibular-pain-caused-by-sleep-disorders-a-review-and-case-report
#16
Daniel F Babiec
Patients who present to the general dentist's office with complaints of temporomandibular joint pain may exhibit signs and symptoms such as muscle soreness, bruxism, joint soreness, limited range of movement, altered movement, and facial pain as well as tooth chipping or tooth movement. After examinations, radiographic evaluations, and a review of medical history, dentists may have a bias toward regarding these symptoms as oral or dental in origin. After a diagnosis of a temporomandibular disorder (TMD), bruxism, or muscular spasms due to occlusal instabilities is established, the treatment protocol often includes an oral appliance (such as a nightguard), exercises, and pharmacologic agents...
July 2017: General Dentistry
https://www.readbyqxmd.com/read/28681501/systematic-development-of-esthetics-and-function-in-a-young-patient-with-maxillary-dental-aplasia
#17
D Edelhoff, O Prandtner, R Saeidi Pour, A Wichelhaus, A Liebermann
OBJECTIVES: Full-arch rehabilitations in young patients suffering from dental agenesis should compensate for the reduced vertical dimension of occlusion and restore both esthetics and function at minimal biological cost. This requires precise planning and maximum patient compliance during the preprosthetic phase. The pretreatment period with tooth-colored splints promotes a predictable outcome of the final restorations. Clinical considerations: Thanks to better restorative materials and adhesive techniques and increased knowledge of how to preserve sound tooth structures, prosthetic dentistry has increasingly turned toward minimally invasive procedures...
July 6, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28680548/evaluation-of-marginal-and-internal-gaps-of-ni-cr-and-co-cr-alloy-copings-manufactured-by-microstereolithography
#18
Dong-Yeon Kim, Chong-Myeong Kim, Ji-Hwan Kim, Hae-Young Kim, Woong-Chul Kim
PURPOSE: The purpose of this study was to evaluate the marginal and internal gaps of Ni-Cr and Co-Cr copings, fabricated using the dental µ-SLA system. MATERIALS AND METHODS: Ten study dies were made using a two-step silicone impression with a dental stone (type IV) from the master die of a tooth. Ni-Cr (NC group) and Co-Cr (CC group) alloy copings were designed using a dental scanner, CAD software, resin coping, and casting process. In addition, 10 Ni-Cr alloy copings were manufactured using the lost-wax technique (LW group)...
June 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28680546/evaluation-of-the-marginal-and-internal-gaps-of-three-different-dental-prostheses-comparison-of-the-silicone-replica-technique-and-three-dimensional-superimposition-analysis
#19
Jin-Young Park, So-Yeon Bae, Jae-Jun Lee, Ji-Hwan Kim, Hae-Young Kim, Woong-Chul Kim
PURPOSE: The purposes of this study were to evaluate the marginal and internal gaps, and the potential clinical applications of three different methods of dental prostheses fabrication, and to compare the prostheses prepared using the silicone replica technique (SRT) and those prepared using the three-dimensional superimposition analysis (3DSA). MATERIALS AND METHODS: Five Pekkton, lithium disilicate, and zirconia crowns were each manufactured and tested using both the SRT and the two-dimensional section of the 3DSA...
June 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28678838/the-oral-bacterial-microbiome-of-occlusal-surfaces-in-children-and-its-association-with-diet-and-caries
#20
Apoena Aguiar Ribeiro, Maria Andrea Azcarate-Peril, Maria Belen Cadenas, Natasha Butz, Bruce J Paster, Tsute Chen, Eric Bair, Roland R Arnold
Dental caries is the most prevalent disease in humans globally. Efforts to control it have been invigorated by an increasing knowledge of the oral microbiome composition. This study aimed to evaluate the bacterial diversity in occlusal biofilms and its relationship with clinical surface diagnosis and dietary habits. Anamneses were recorded from thirteen 12-year-old children. Biofilm samples collected from occlusal surfaces of 46 permanent second molars were analyzed by 16S rRNA amplicon sequencing combined with the BLASTN-based search algorithm for species identification...
2017: PloS One
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