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vertical dimension of occlusion

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https://www.readbyqxmd.com/read/29743384/temporal-change-in-the-occlusal-vertical-dimension-and-its-involvement-in-modulation-of-jaw-movement-in-bite-reduced-animals
#1
Hiroshi Matoba, Hayato Kanayama, Takafumi Kato, Mohammad Z Hossain, Junichi Kitagawa, Yoshie Takehana, Kazuhiro Yamada, Yuji Masuda
The occlusal vertical dimension (OVD) in guinea pigs is maintained by tooth eruption and grinding. It has been reported that the experimentally raised OVD recovers to the innate OVD within a few days in guinea pigs. However, the mechanisms underlying OVD adjustment are not entirely understood. This study thus aimed to clarify whether the experimentally reduced OVD would recover. Bite-reduced guinea pigs were created by applying bilateral intermaxillary elastics for 10 days. Guinea pigs without elastics were used as a control...
May 10, 2018: Journal of Oral Science
https://www.readbyqxmd.com/read/29731941/an-anthropometric-study-of-cranio-facial-measurements-and-their-correlation-with-vertical-dimension-of-occlusion-among-saudi-arabian-subpopulations
#2
REVIEW
Muhammed Irfan Majeed, Satheesh B Haralur, Muhammed Farhan Khan, Maram Awdah Al Ahmari, Nourah Falah Al Shahrani, Sharaz Shaik
BACKGROUND: Determining and restoring physiological vertical dimension of occlusion (VDO) is the critical step during complete mouth rehabilitation. The improper VDO compromises the aesthetics, phonetics and functional efficiency of the prosthesis. Various methods are suggested to determine the accurate VDO, including the facial measurements in the clinical situations with no pre-extraction records. The generalisation of correlation between the facial measurements to VDO is criticised due to gender dimorphism and racial differences...
April 15, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29728555/prosthetic-rehabilitation-using-a-telescopic-crown-constructed-with-computer-assisted-design-and-computer-assisted-manufacturing-a-case-report-with-a-2-year-follow-up
#3
Nasser M Al Ahmari
Aim and background: This case report describes a 74-year-old female patient whose teeth were rehabilitated using telescopic crowns (TCs) on abutments and fixed dental prostheses (FDPs) in the maxillary arch with the aid of computer-assisted design and computer-assisted manufacturing (CAD/CAM) technology. The mandibular arch was restored using casted removable dental prostheses (RDPs) and surveyed crowns. Case report: The treatment sequences were followed as recommended in the dental literature. First, existing defective restorations were eliminated, caries was removed, and excellent mouth preparation was performed...
April 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29713432/effect-of-polymerization-method-and-fabrication-method-on-occlusal-vertical-dimension-and-occlusal-contacts-of-complete-arch-prosthesis
#4
Ana Paula Barbosa Lima, Rafael Pino Vitti, Marina Amaral, Ana Christina Claro Neves, Lais Regiane da Silva Concilio
PURPOSE: This study evaluated the dimensional stability of a complete-arch prosthesis processed by conventional method in water bath or microwave energy and polymerized by two different curing cycles. MATERIALS AND METHODS: Forty maxillary complete-arch prostheses were randomly divided into four groups (n = 10): MW1 - acrylic resin cured by one microwave cycle; MW2 - acrylic resin cured by two microwave cycles: WB1 - conventional acrylic resin polymerized using one curing cycle in a water bath; WB2 - conventional acrylic resin polymerized using two curing cycles in a water bath...
April 2018: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29689294/the-facial-effects-of-tooth-wear-rehabilitation-as-measured-by-3d-stereophotogrammetry
#5
Bernadette A M M Sterenborg, Thomas J J Maal, Rinaldo Vreeken, Bas A C Loomans, Marie-Charlotte D N J M Huysmans
OBJECTIVE: Evaluate the effect of a full rehabilitation, including an increase of vertical dimension of occlusion (VDO), in patients with severe tooth wear on changes in facial appearance. METHODS: Patients with severe tooth wear were restoratively treated using direct composite restorations, including an increase of the VDO. Before and one month after treatment 3D stereophotographs were taken and facial changes were measured with the use of 3D cephalometric landmarks...
April 21, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29685399/relationship-between-the-curve-of-spee-and-craniofacial-variables-a-regression-analysis
#6
Abdelali Halimi, Hicham Benyahia, Mohamed-Faouzi Azeroual, Loubna Bahije, Fatima Zaoui
INTRODUCTION: The aim of this regression analysis was to identify the determining factors, which impact the curve of Spee during its genesis, its therapeutic reconstruction, and its stability, within a continuously evolving craniofacial morphology throughout life. MATERIAL AND METHODS: We selected a total of 107 patients, according to the inclusion criteria. A morphological and functional clinical examination was performed for each patient: plaster models, tracing of the curve of Spee, crowding, Angle's classification, overjet and overbite were thus recorded...
April 20, 2018: International Orthodontics
https://www.readbyqxmd.com/read/29627207/comparison-of-clinical-and-electromyographic-rest-vertical-dimensions-in-dolichofacial-and-brachyfacial-young-adults-a-cross-sectional-study
#7
Arturo Manns, Catalina Valdivieso, Victor Rojas, Constanza Valdés, Valeria Ramírez
STATEMENT OF PROBLEM: Therapeutic procedures that increase occlusal vertical dimension (OVD) may have different responses in patients with different craniofacial vertical patterns. The effect on these patients of increasing their OVD is not well understood. PURPOSE: The purpose of this clinical study was to compare measurements of vertical jaw separation (VJS) in patients with brachyfacial and dolichofacial craniofacial patterns in 2 vertical dimensions: the clinical rest/postural vertical dimension (CR/PVD) and electromyographic rest vertical dimension (EMGRVD)...
April 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29610781/three-dimensional-registration-of-real-jaw-motion-tracking-data-and-its-therapeutic-consequences
#8
Andreas Kurbad
When determined by conventional jaw relation recording methods, the real position of the condyle remains largely unclear because the geometric relationship between the reference point and the position of the condyle is unknown. Sicat Function combines cone beam computed tomography (CBCT) data with digital jaw motion tracking (JMT) data and digital intraoral surface data. It is thus capable of measuring and visualizing patient-specific jaw movements. The corresponding patient-specific treatment position can be defined and integrated in various therapeutic appliances, eg, repositioning splints designed to increase the vertical dimension of occlusion (VDO)...
2018: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/29595354/comparison-of-posterior-occlusion-between-patients-with-anterior-open-bite-and-scissor-deep-bite
#9
Kun Qi, Yifei Xu, Yuxia Hou, Mei-Qing Wang
Objective A minor alteration in the posterior occlusal height elicits a large transformation in the anterior vertical dimension. Thus, the present study was performed to determine whether a posterior cusp-to-cusp relation that increases the posterior vertical dimension contributes to an anterior open bite. Methods Study casts were examined from orthodontic patients aged 10 to 27 years, 21 with an open bite and 28 with a scissor deep bite. A logistic regression model was used to analyze the contribution of various factors to these two anterior occlusal patterns...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29573454/determination-of-the-occlusal-vertical-dimension-in-edentulous-patients-using-lateral-cephalograms
#10
Norbert Enkling, Johanna Enkling-Scholl, Dominic Albrecht, Michael M Bornstein, Martin Schimmel
OBJECTIVES: The determination of the occlusal vertical dimension (OVD) in edentulous patients is based on clinical assessment with high variability. The current study tested the hypothesis: The average OVD in edentulous patients with conventional dentures is too low compared to orthodontic norms, when only clinical parameters are used for the determination of the OVD. METHODS: Edentulous patients with conventional full dentures were enrolled. Clinical parameters were judged by two senior prosthodontists...
March 24, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29551375/prosthetic-rehabilitation-for-a-patient-treated-for-embryonal-rhabdomyosarcoma
#11
Korbinian Benz, Carla Kozmacs, Andree Piwowarczyk, Jochen Jackowski
A female patient, now aged 17 years, was diagnosed with rhabdomyosarcoma (RMS) in the right pterygopalatine fossa when she was 3 years old. The RMS was successfully treated by excision, but the subsequent radiation and polychemotherapy resulted in the complete anesthesia of the distribution area of the right trigeminal nerve and loss of vision in the right eye. The patient also experienced pain in the mandibular joints and masticatory muscles. Panoramic radiographs displayed a multiple agenesia of the permanent teeth and underdeveloped apices...
March 15, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29540283/common-symptoms-of-temporomandibular-disorders-do-not-mean-same-treatment-plans-a-case-series
#12
Maria Paço, Paula Chaves, Francisco Pinho, Carolina Lemos, Rui Costa, José A Duarte, Teresa Pinho
INTRODUCTION: Temporomandibular disorders (TMDs) present several risks and different contributing factors with consequently diverse treatment approaches. It is important to recognize what patients' characteristics may benefit from orthodontics, from physiotherapy, from other treatment modalities or even from a combined approach. CASES PRESENTATION: We present three cases of patients with common TMDs signs and/or symptoms and different treatment approaches and outcomes, and our aim is to understand what might explain the different outcomes observed and also provide a rationale about the skeletal, muscular, facial and occlusal characteristics that may be indicative of a particular intervention benefit...
March 11, 2018: International Orthodontics
https://www.readbyqxmd.com/read/29526300/defining-centric-relation
#13
Jonathan P Wiens, Gary R Goldstein, Mark Andrawis, Mijin Choi, Jennifer W Priebe
STATEMENT OF PROBLEM: Multiple definitions of centric relation (CR) have evolved over time that may have created confusion or impeded understanding. A recent attempt to achieve a singular definition by surveying the members of the Academy of Prosthodontics (AP) did not achieve majority consensus. PURPOSE: The purpose of this study was to identify those aspects or attributes within the existing definitions of CR in which there was agreement or disagreement among the members of the AP...
March 8, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29526298/a-cad-cam-technique-for-conversion-of-interim-to-definitive-restoration-in-patients-with-complete-edentulism
#14
Xueyin An, Jing-Huan Fang, Seung-Mi Jeong, Byung-Ho Choi
An interim restoration is a prototype for the definitive prosthesis and preserves the occlusal information and the original vertical dimension of the occlusion. Several techniques have been developed to transfer the information from implant-supported fixed interim to definitive restoration. However, these conventional techniques have limitations, and they are time-consuming, require making impressions and stone casts, and mounting in an articulator. The purpose of this article was to describe a digital technique to accurately transfer the information from complete-arch implant interim restoration to definitive restorations without using definitive casts...
March 8, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29522269/a-technique-for-digital-impression-and-bite-registration-for-a-single-edentulous-arch
#15
Yiqin Fang, Jing-Huan Fang, Seung-Mi Jeong, Byung-Ho Choi
Few studies have reported the application of digital technology for the process of impression and interocclusal recordings in edentulous patients. This article describes a digitizing system for generating digital edentulous models with a jaw relationship by taking direct digital impressions and a virtual bite registration using intraoral digital scanning. A specialized scan retractor was used to make digital impressions of edentulous jaws in patients' mouths using an intraoral scanner. Virtual bite registration was obtained with optical scanning of the buccal surfaces of both jaws at the occlusal vertical dimension...
March 9, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29495023/a-guide-to-managing-tooth-wear-the-radboud-philosophy
#16
B Loomans, N Opdam
This paper explains a conservative, pragmatic and minimally invasive intervention concept for the treatment of severe tooth wear patients based on the Radboud Tooth Wear Project in the Netherlands. Guidelines and flowcharts for management of severe tooth wear patients and rehabilitation in increased vertical dimension of occlusion are presented. We concluded that: (a) Restorative treatment is not always indicated, even for patients with severe tooth wear. (b) If the patient has no complaints, counselling and monitoring is probably the best option...
March 9, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29447311/a-simplified-approach-for-restoration-of-worn-dentition-using-the-full-mock-up-concept-clinical-case-reports
#17
Stefen Koubi, Galip Gurel, Patrice Margossian, Richard Massihi, Herve Tassery
Treatment of tooth wear has increased over the last two decades. However, the treatments involved have not been satisfactory to most patients, nor have they achieved the expected goal on some worn teeth. New approaches have emerged to reconstruct full arches in a minimally invasive way that take advantage of developments in the field of adhesive dentistry. These new concepts constitute a revolution in dentistry and their application requires adapted techniques and training. The purpose of this article is to suggest a precise and reproducible method that simplifies the treatment of worn dentition...
March 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29407506/interdisciplinary-treatment-of-a-patient-with-multiple-missing-teeth-and-periodontitis
#18
Jae-Chan Ahn, Jae-Hong Lee, Joon-Ho Yoon, Ji-Yeon Lee, Jung-Hoon Kim
A 49-year-old woman with several missing and periodontically compromised teeth was referred to the orthodontic department of National Health Insurance Service Ilsan Hospital by the periodontic department for interdisciplinary treatment. Multiple posterior teeth had been extracted 10 days earlier. Her chief complaint was crowding of the anterior teeth, and she wanted to improve both esthetics and function. Orthodontic, periodontic, and prosthodontic treatments were undertaken in the proper timing and sequence with an interdisciplinary approach...
February 2018: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29403236/complete-overlay-denture-for-pedodontic-patient-with-severe-dentinogenesis-imperfecta
#19
Gibi Syriac, Elizabeth Joseph, Suresh Rupesh, Josey Mathew
Dentinogenesis imperfecta (DI) is a hereditary condition that may affect both primary and permanent dentition and is characterized by abnormal dentin formation. The teeth may be discolored with chipping of enamel and, in untreated cases, the entire dentition may wear off to the gingiva. This may lead to the formation of abscesses, tooth mobility, and early loss of teeth. In the Indian population, DI is found to have an incidence of 0.09%. Treatment of DI should aim to remove infection, if any, from the oral cavity; restore form, function, and esthetics; and protect posterior teeth from wear for maintaining the occlusal vertical dimension...
October 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29379903/cad-cam-based-chairside-restorative-technique-with-composite-resin-for-full-mouth-adhesive-rehabilitation-of-excessively-worn-dentition
#20
Filippo Del Curto, Carlo Massimo Saratti, Ivo Krejci
Since the first introduction of the Cerec system (Sirona) in the early 1980s, the use of computer-aided design/computer-aided manufacture (CAD/CAM) technology has spread widely in modern adhesive dentistry. Thanks to this innovative technology, it has been possible to carry out chairside restorations fully managed by the clinician, with the advantages of lower costs for the patient, more rapid execution of the restorations, and the exclusion of the provisional phase. With further improvements in chairside technologies and materials, specifically in the field of composite resin blocks, it is now possible to fabricate multiple ultrathin, minimally invasive or even noninvasive restorations in one single appointment...
2018: International Journal of Esthetic Dentistry
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