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https://www.readbyqxmd.com/read/28628350/custom-cast-ball-attachments-used-on-outdated-implants-to-restore-a-maxillary-implant-supported-overdenture
#1
Andressa Rosa Perin Leite, Danny Omar Mendoza Marin, Gabriela Giro, Ana Carolina Pero, Ligia Antunes Pereira Pinelli, JoséMauriciodos Santos Reis
The lack of compatible prosthetic components can be a complication during oral rehabilitations using outdated implants. The aim of the present clinical report was to describe an alternative technique for the fabrication of a maxillary implant-supported overdenture in a patient with 20-year-old dental implants using castable spherical patterns and ball-attachments. The patient had been wearing a relined bar/clip overdenture in the mandible on four external-hexagon dental implants and a relined complete denture in the maxilla on four internal-hexagon implants due to abutment screw fracture inside of the implants, losing the attachment system...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28625664/effects-of-different-numbers-of-mini-dental-implants-on-alveolar-ridge-strain-distribution-under-mandibular-implant-retained-overdentures
#2
Pongsakorn Warin, Pimduen Rungsiyakull, Chaiy Rungsiyakull, Pathawee Khongkhunthian
PURPOSE: To investigate the strains around mini-dental implants (MDIs) and retromolar edentulous areas when using different numbers of MDIs in order to retain mandibular overdentures. MATERIALS AND METHODS: Four different prosthetic situations were fabricated on an edentulous mandibular model including a complete denture (CD), and three overdentures, retained by four, three or two MDIs in the interforaminal region with retentive attachments. A static load of 200N was applied on the posterior teeth of the dentures under bilateral or unilateral loading conditions...
June 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28625663/development-of-complete-dentures-based-on-digital-intraoral-impressions-case-report
#3
Jing-Huan Fang, Xueyin An, Seung-Mi Jeong, Byung-Ho Choi
PATIENT: A 60-year-old man presented for refabrication of his maxillary complete denture. In this case, a digital process was chosen to replace the ill-fitted complete maxillary denture. A specialized scan retractor was used to retract the mobile tissues of the lips, cheeks and vestibule while taking a digital impression. The interocclusal record obtained in the patient's mouth was scanned in order to digitally register the occlusal vertical dimension. The denture base and teeth were designed on virtual models that were mounted at the occlusal vertical dimension, and were made using CAD/CAM technology...
June 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28621037/gingival-morphology-controlled-design-of-the-complete-denture-baseplate
#4
Ning Dai, Xiaoling Yu, Yuchun Sun
A removable complete denture is still the main selection for edentulous patients. Over the last five years, digital technologies for producing complete dentures have rapidly developed. Nevertheless, the design method for the baseplate has become the bottleneck of digital complete denture technology development. In this study, we report a novel method for the generation of aesthetic gingiva and polished surfaces of complete dentures that are driven by the feature curve, which can be conveniently modified using the gingival shape factor...
June 16, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28620638/evaluation-of-the-color-stability-of-methyl-methacrylate-and-nylon-base-polymer
#5
Fahimeh Hamedi Rad, Tahereh Ghaffari, Raana Tamgaji
STATEMENT OF THE PROBLEM: Evaluation of the color stability of materials used for the fabrication of the base of complete and partial removable dentures provides important information in relation to their clinical service. The color stability of nylon-based polymers as denture bases, compared to that of acrylic resins, has not been extensively evaluated since to date. PURPOSE: The aim of the present in vitro study was to evaluate the color stability of conventional polymethyl methacrylate and nylon-based polymer materials used for the fabrication of the base of complete and partial removable dentures...
June 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28613056/-a-preliminary-study-on-the-forming-quality-of-titanium-alloy-removable-partial-denture-frameworks-fabricated-by-selective-laser-melting
#6
Y F Liu, H Yu, W N Wang, B Gao
Objective: To evaluate the processing accuracy, internal quality and suitability of the titanium alloy frameworks of removable partial denture (RPD) fabricated by selective laser melting (SLM) technique, and to provide reference for clinical application. Methods: The plaster model of one clinical patient was used as the working model, and was scanned and reconstructed into a digital working model. A RPD framework was designed on it. Then, eight corresponding RPD frameworks were fabricated using SLM technique...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28613055/-comparison-of-adaptation-and-microstructure-of-titanium-upper-complete-denture-base-fabricated-by-selecting-laser-melting-and-electron-beam-melting
#7
Y Ye, Y Y Xiong, J R Zhu, J Sun
Objective: To fabricate Ti alloy frameworks for a maxillary complete denture with three-dimensional printing (3DP) technique, such as selective laser melting (SLM) and electron beam melting (EBM), and to evaluate the microstructure of these frameworks and their adaptation to the die stone models. Methods: Thirty pairs of edentulous casts were divided into 3 groups randomly and equally. In each group, one of the three techniques (SLM, EBM, conventional technique) was used to fabricate Ti alloy frameworks. The base-cast sets were transversally sectioned into 3 sections at the distal of canines, mesial of first molars, and the posterior palatal zone...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28613054/-quantitative-evaluation-of-printing-accuracy-and-tissue-surface-adaptation-of-mandibular-complete-denture-polylactic-acid-pattern-fabricated-by-fused-deposition-modeling-technology
#8
K H Deng, Y Wang, H Chen, Y J Zhao, Y S Zhou, Y C Sun
Objective: To quantitatively evaluate the adaptation of polylactic acid (PLA) pattern of mandibular complete denture fabricated by fused deposition modeling (FDM) technology. Methods: A mandibular complete denture digital model was designed through a complete denture design software based on a pair of standard maxillomandibular edentulous plaster model and their occlusion bases. Ten PLA mandibular complete dentures were printed with a FDM machine. The dentures were scanned with and without the plaster model using a three-dimensional (3D) scanner...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28600914/determination-of-occlusal-vertical-dimension-for-complete-dentures-patients-an-updated-review
#9
REVIEW
Mohammed Nasser Alhajj, Nadia Khalifa, Jaafar Abduo, Abdullah G Amran, Ibrahim A Ismail
Determination of the occlusal vertical dimension (OVD) is an integral part of complete dentures fabrication. Due to the lack of teeth, the clinician faces the challenge of how to accurately establish the OVD of the new denture. Therefore, the purpose of this review article was to present, discuss and critique the available methods used in determining the OVD for complete dentures patients. This review identified two main streams to determine the OVD: (i) pre-extraction methods and (ii) post-extraction methods...
May 18, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28600815/neutral-zone-or-conventional-mandibular-complete-dentures-a-randomized-cross-over-trial-comparing-oral-health-related-quality-of-life
#10
Greta A V M Geerts
There is widespread consensus that the neutral zone (NZ) concept contributes to improved stability for mandibular complete dentures (CDs). However, little is known about its impact on oral health-related quality of life (OHRQoL) of edentulous patients compared to conventionally (CV) manufactured dentures. In this prospective cross-over trial, performed at the Oral Health Centre of the University of the Western Cape, CV and NZ mandibular dentures were made for each patient. Scores from the 20-item oral health impact profile (OHIP-20) for both types of dentures were compared with pre-treatment scores using paired t-tests...
June 10, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28590096/efficacy-of-removable-partial-denture-treatment-a-retrospective-oral-health-related-quality-of-life-evaluation
#11
Zaid Ali, Sarah Baker, Poyan Barabari, Nicolas Martin
Successful removable partial dentures (RPDs) use may be influenced by patient and denture variables including age, denture experience and number or position of teeth being replaced. Influence of patient and denture variables on OHRQoL with RPDs was investigated using ordinal logistic regression analysis. METHODS: Participants provided with RPDs were invited to complete OHIP-20 at least 4 weeks after dentures were fitted. Clinical records were retrieved to identify a number of independent variables...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28584537/a-comparison-of-the-efficacy-of-mechanical-chemical-and-microwave-radiation-methods-in-disinfecting-complete-dentures
#12
Niloofar Mojarad, Zahra Khalili, Shima Aalaei
BACKGROUND: Poor denture hygiene can be a potential source of pathogens. The aim of this study was to compare the efficacy of microwave radiation with that of chemical and mechanical techniques in disinfecting complete dentures contaminated with Staphylococcus aureus and Pseudomonas aeruginosa. MATERIALS AND METHODS: Seventy-two sterilized mandibular dentures were separately contaminated with S. aureus (n = 32) and P. aeruginosa (n = 32) and then incubated at 37°C for 48 h...
March 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28578870/the-essential-oil-of-allium-sativum-as-an-alternative-agent-against-candida-isolated-from-dental-prostheses
#13
Alejandro Mendoza-Juache, Saray Aranda-Romo, Josué R Bermeo-Escalona, Araceli Gómez-Hernández, Amaury Pozos-Guillén, Luis Octavio Sánchez-Vargas
BACKGROUND: The colonization of the surfaces of dental prostheses by Candida albicans is associated with the development of denture stomatitis. In this context, the use of fluconazole has been proposed, but its disadvantage is microbial resistance. Meanwhile, the oil of Allium sativum has shown an effect in controlling biofilm formation by C. albicans. AIMS: The objective of this study was to determine the antifungal activities of the essential oil of A. sativum and fluconazole against clinical isolates of Candida species obtained from rigid, acrylic-based partial or total dentures and to compare these agents' effects on both biofilm and planktonic cells...
June 1, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28575640/the-effect-of-subinhibitory-concentrations-of-gentian-violet-on-the-germ-tube-formation-by-candida-albicans-and-its-adherence-to-oral-epithelial-cells
#14
T Mafojane, S L Shangase, M Patel
OBJECTIVE: This study investigated the effect of subinhibitory concentrations of gentian violet on the germ tube formation by Candida albicans and its adherence ability to oral epithelial cells. METHODS: Thirty strains of C. albicans isolated from denture wearers, normal healthy individuals and HIV positive patients were used in the study. The antifungal property (Minimum Fungicidal Concentration) of gentian violet was determined at various time intervals using a microdilution technique...
May 25, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28571293/management-of-severely-atrophic-mandibular-ridge-using-hollow-denture-with-an-analytical-discussion-a-clinical-case-report
#15
Rupal Jaydip Shah, Sanjay Balaji Lagdive, Satyaprakash Ranjit Shah, Vishal Bipinbihari Verma, Shraddha Lalit Saini
A severely resorbed edentulous mandibular ridge, although fairly common in occurrence, its rehabilitation poses a challenging clinical situation for the prosthodontist. This has implored prosthodontists to seek for ingenious modifications in the conventional prosthetic forms so as to gratify patient's expectations who have difficulty in wearing the mandibular complete dentures. Opting for the most suitable treatment modality mandates equilibrating the retention, stability and support triad to the fullest. Extreme resorption of the denture bearing tissue bed may lead to problems with achieving adequate levels of prosthetic satisfaction for the patient...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28571264/evaluation-of-resting-tongue-position-in-recently-extracted-and-long-term-completely-edentulous-patients-a-prospective-interventional-study
#16
K Rajeshwari, Shivani Kohli, Xavier K Mathew
INTRODUCTION: Presence of abnormal resting tongue position can lead to poor denture retention and stability. The prevalence of retracted tongue position has been found to be higher in partially edentulous subjects compared to dentate subjects and is greatest in completely edentulous individuals. AIM: To evaluate resting tongue position in recently extracted and long term completely edentulous patients, and to evaluate the efficacy of achieving retracted tongue position by simple modification in complete denture along with certain tongue exercises...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28567529/influence-of-a-face-bow-on-oral-health-related-quality-of-life-after-changing-the-vertical-dimension-in-the-articulator-a-randomized-controlled-trial-part-ii
#17
Manja von Stein-Lausnitz, Steffen Schmid, Felix H Blankenstein, Ingrid Peroz, Florian Beuer, Guido Sterzenbach
OBJECTIVES: In a double-blind randomized controlled clinical trial, the impact of face-bow registration for remounting complete dentures (CDs) on oral health-related quality of life (OHRQoL) was evaluated. MATERIALS AND METHODS: New CDs of 32 subjects were clinically remounted using intraoral pin registration. CDs were transferred into a semi-adjustable articulator corresponding to group #1: mean settings with Bonwill triangle and Balkwill angle, and group #2: arbitrary hinge axis with a face-bow registration...
May 31, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28567138/a-5-week-non-surgical-approach-towards-denture-induced-hyperplasia
#18
Carolina Mayumi Iegami, Regina Tamaki, Pedro Tortamano Neto
BACKGROUND: Despite the standard approach towards denture-induced hyperplasia being surgery, as elderly population increases the systemic problems are carried along. Thus, surgery might be risky for patients with medical conditions. OBJECTIVE: In this report, a patient with severe inflammatory papillary hyperplasia, medical problems and dental fear was treated with a 5-week nonsurgical protocol. METHOD: Once in a week, the upper denture was relined with a zinc enolic paste, for four weeks...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/28561550/the-oral-health-of-people-with-learning-disabilities-a-user-friendly-questionnaire-survey
#19
J Owens, K Jones, Z Marshman
Impetus for action: To conduct a user-friendly questionnaire survey of the oral health and service needs of adults with learning disabilities. Solution: Researchers collaborated with local self-advocacy services to develop a questionnaire adapted from one used in a regional postal survey. The questionnaire, which covered dental status, oral health and dental services use, was sent to a random sample of people from the learning disability case register. Outcome: Of 2,000 questionnaires mailed, 117 were returned undelivered and 625 were completed (response rate 31...
March 2017: Community Dental Health
https://www.readbyqxmd.com/read/28561383/differences-in-lip-support-with-and-without-labial-flanges-in-a-maxillary-edentulous-population-part-4-patient-centered-analysis
#20
Avinash S Bidra, Foteini Touloumi, Rong Wu
PURPOSE: To study the subjective differences in facial esthetics evaluations and the ability to distinguish facial changes due to changes in lip support, when evaluated by patients themselves. An additional objective was to study the differences between patients' self-evaluation versus evaluation of other patients. MATERIALS AND METHODS: A total of 22 maxillary edentulous patients from the original sample of 31 patients described in Part 1 of the study, returned to participate in this part of the study...
May 31, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
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