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International Journal of Prosthodontics

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https://www.readbyqxmd.com/read/28319216/influence-of-implant-number-and-location-on-strain-around-an-implant-combined-with-force-transferred-to-the-palate-in-maxillary-overdentures
#1
Tsung-Chieh Yang, Yi-Chen Chen, Tong-Mei Wang, Li-Deh Lin
This study evaluated the effect of implant number and location on strain around the implant and force transferred to the palate in maxillary implant overdentures (IODs), including two locators attached bilaterally in the canine region (IOD 2), four locators attached bilaterally in the canine and premolar regions (IOD 4CP), four locators attached bilaterally in the canine and molar regions (IOD 4CM), and six locators attached bilaterally in the canine, premolar, and molar regions (IOD 6). As the implant number increased, strain around the implant regions increased, whereas force transferred to the palate decreased under loading...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319215/number-and-location-of-mini-implants-retaining-a-mandibular-overdenture-to-resist-lateral-forces-a-preliminary-in-vitro-study
#2
Kyozo Takagaki, Tomoya Gonda, Yoshinobu Maeda
PURPOSE: The aim of this study was to determine the optimal number and location of mini-implants retaining an overdenture to resist lateral forces. MATERIALS AND METHODS: A strain gauge was attached to a mini-implant and placed in an edentulous mandible model. The following different implant locations were evaluated: one mini-implant at the midline, two mini-implants in the lateral incisor regions, two mini-implants in the canine regions, and four mini-implants...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319214/fabrication-of-a-mandibular-implant-supported-overdenture-with-a-new-attachment-system-a-review-of-current-attachment-systems
#3
Karnik Shah, Burak Yilmaz, Edwin McGlumphy
Since their introduction, implant-retained overdentures have represented a feasible, economical, and highly successful treatment option for completely edentulous patients. Different attachment systems have been effectively used to retain these implant overdentures, and each system has advantages and disadvantages. Locator attachment (Zest Anchors) is one system that has been widely used by clinicians, particularly, for two-implant-supported situations. Recently, Zest Anchors developed a new locator-style abutment, Locator R-Tx...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319213/comparison-of-the-marginal-fit-of-cobalt-chromium-metal-ceramic-crowns-fabricated-by-cad-cam-techniques-and-conventional-methods-at-three-production-stages
#4
Francisco Real-Voltas, Elisabeth Romano-Cardozo, Oscar Figueras-Alvarez, Magi Brufau-de Barbera, Josep Cabratosa-Termes
PURPOSE: The aim of this study was to compare the marginal fit of cobalt-chromium crowns fabricated using conventional casts and computer-aided design/computer-assisted manufacturing (CAD/CAM) techniques at three stages of production: metal coping, after porcelain firing, and after cementation. MATERIALS AND METHODS: A total of 80 metal-ceramic crowns were fabricated using four different techniques: lost wax casting, milling, laser sintering, and milling of a presintered metal block...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319212/treatment-outcomes-for-mandibular-mini-implant-retained-overdentures-a-systematic-review
#5
Jin-Hong Park, Jeong-Yol Lee, Sang-Wan Shin
PURPOSE: This systematic review evaluated treatment outcomes for mandibular mini-implant-retained overdentures (MMIOs) in terms of (1) implant survival rate, (2) peri-implant marginal bone loss, (3) prosthodontic maintenance and complication occurrence, and (4) patient satisfaction. MATERIALS AND METHODS: Pertinent literature published in English before October 12, 2015 was identified using a MEDLINE and EMBASE search strategy and hand searching of relevant journals...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319211/thread-skip-an-undefined-common-observation
#6
Peter McDermott, William DE Allan
When a screw-retained implant prosthesis is removed, a click is heard and a slight axial shift is felt, indicating the screw has been fully removed from the retaining thread. This common observation has never been described in the literature. This article describes the click, and it is proposed it be termed thread-skip.
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319210/oculo-dento-digital-dysplasia-oddd-due-to-a-gja1-mutation-report-of-a-case-with-emphasis-on-dental-manifestations
#7
Christina Hadjichristou, Violetta Christophidou-Anastasiadou, Athina Bakopoulou, George A Tanteles, Maria A Loizidou, Kyriacos Kyriacou, Andreas Hadjisavvas, Konstantinos Michalakis, Argyris Pissiotis, Petros Koidis
Oculo-dento-digital dysplasia (ODDD) is a congenital disorder manifesting with multiple phenotypic abnormalities involving the face, eyes, teeth, and limbs in addition to neurologic symptomatology. This report aims to present a female patient with ODDD who was referred due to extensive oral restorative needs. The presence of hypoplastic enamel triggered further evaluation. Characteristic facies with hypoplastic alae nasi and syndactyly offered greater insight into the phenotype of the syndrome. Clinical suspicion was confirmed by genetic sequencing revealing heterozygous mutation in GJA1...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319209/association-between-sociodemographic-factors-personality-and-oral-habits-tooth-brushing-and-smoking-in-spanish-adults
#8
Cristina Gómez Polo, Javier Montero
PURPOSE: The aim of the present study was to describe personality traits of a sample of Spanish adults, identify the main sociodemographic factors related to personality, and assess the influence of these traits on healthy dental habits. MATERIALS AND METHODS: A cross-sectional design was used with 235 subjects, all of Spanish nationality and aged between 18 and 80 years, with a minimum educational level (ie, they had completed only the minimum obligatory schooling), ensuring that none of the subjects had any psychologic disturbance...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319208/posterior-mandibular-ridge-resorption-associated-with-different-retentive-systems-for-overdentures-a-7-year-retrospective-preliminary-study
#9
Moustafa Abdou Elsyad, Shahinaz Sayed Mohamed, Ahmad Fathalla Shawky
PURPOSE: This retrospective study compared posterior mandibular residual ridge resorption with two different retentive mechanisms for overdentures after 7 years. MATERIALS AND METHODS: A convenience sample of 18 edentulous men was assigned to one of two equal groups. Two implants were placed in the mandibular canine areas for each patient using the conventional two-stage surgical protocol, and the implants were splinted with a round bar 3 months later. New mandibular overdentures were then connected to the bars with clips (clip-retained overdentures, CR group) or resilient liners (resilient liner-retained overdentures, RR group)...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319207/posterior-prosthetic-teeth-size-selection-for-edentulous-egyptian-patients-a-radiographic-assessment
#10
Maha W Elkerdawy, Amr H Elkhadem
PURPOSE: The aim of this study was to correlate the location of the mental foramen and overlying teeth and apply these observations to posterior prosthetic teeth selection in a group of Egyptian edentulous patients. MATERIALS AND METHODS: Retrospective cone beam computed tomography data from 40 dentate and 40 edentulous patients scanned with radiopaque denture duplicates were compared in relation to mental foramen position. RESULTS: The probability of locating the mental foramen opposite the first premolar was higher in dentate patients, while finding it opposite the first molar was higher in edentulous patients...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319206/bone-quality-and-quantity-and-dental-implant-failure-a-systematic-review-and-meta-analysis
#11
Bruno Ramos Chrcanovic, Tomas Albrektsson, Ann Wennerberg
PURPOSE: The aim of this study was to test the null hypothesis that there is no difference in implant failure rates, marginal bone loss, and postoperative infection for implants inserted in bone with different qualities and quantities according to the classification of Lekholm and Zarb. MATERIALS AND METHODS: An electronic search was undertaken in January 2015 for randomized and nonrandomized human clinical studies. RESULTS: A total of 94 publications were included...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319205/support-ratio-between-abutment-and-soft-tissue-under-overdentures-a-comparison-between-use-of-two-and-four-abutments
#12
Manami Abe, Tsung-Chieh Yang, Yoshionobu Maeda, Takanori Ando, Masahiro Wada
PURPOSE: The purpose of this preliminary in vivo study was to compare force distribution on abutments (tooth or implant) and tissues supporting overdentures with two or four abutments. MATERIALS AND METHODS: A convenience sample of five subjects with tooth and/or implant-supported overdentures was enrolled. Recordings were completed on each subject using a force-measuring system mounted on a metal framework with four anteroposterior spread abutments (A), four abutments with denture bases (B), and on two anterior abutments with denture bases (C)...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28267831/associations-between-early-implant-failure-patient-age-and-patient-mortality-a-15-year-follow-up-study-on-2-566-patients-treated-with-implant-supported-prostheses-in-the-edentulous-jaw
#13
Torsten Jemt, Mats Nilsson, Malin Olsson, Victoria Franke Stenport
PURPOSE: The aim of this study was to report the distribution of patients with early implant failures after implant treatment in the edentulous jaw with regard to age at surgery and association with patient mortality over a 15-year period. MATERIALS AND METHODS: All consecutively treated patients treated in the edentulous jaw at a single specialist clinic from 1986 to 1997 were included and followed up for 1 year for implant failures and for 15 years with regard to patient mortality...
March 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28267830/build-angle-does-it-influence-the-accuracy-of-3d-printed-dental-restorations-using-digital-light-processing-technology
#14
Reham B Osman, Nawal Alharbi, Daniel Wismeijer
PURPOSE: The aim of this study was to evaluate the effect of the build orientation/build angle on the dimensional accuracy of full-coverage dental restorations manufactured using digital light-processing technology (DLP-AM). MATERIALS AND METHODS: A full dental crown was digitally designed and 3D-printed using DLP-AM. Nine build angles were used: 90, 120, 135, 150, 180, 210, 225, 240, and 270 degrees. The specimens were digitally scanned using a high-resolution optical surface scanner (IScan D104i, Imetric)...
March 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28267829/success-and-survival-of-various-types-of-all-ceramic-single-crowns-a-critical-review-and-analysis-of-studies-with-a-mean-follow-up-of-5-years-or-longer
#15
Alhanoof Aldegheishem, George Ioannidis, Wael Att, Haralampos Petridis
PURPOSE: The aim of this critical review was to assess the survival and success rates of all-ceramic single crowns manufactured using different ceramic materials with a mean follow-up time of 5 years or longer. MATERIALS AND METHODS: An electronic search of studies published between 1980 and 2014 complemented by manual searching was conducted in Medline and Scopus. The terms ceramic, crown, survival, success, longevity, and complications were selected as keywords...
March 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28267828/satoyoshi-syndrome-with-progressive-orofacial-manifestations-a-case-history-report
#16
Jian Li, Dong Peng, Ting Jiang, Limor Avivi-Arber
A young female patient suffering from Satoyoshi syndrome had the first characteristic signs and symptoms of hair loss and progressive spontaneous intermittent painful spasms of limb muscles at age 6.5 years. Thereafter, she developed chronic diarrhea, amenorrhea, and skeletal deformities. In the orofacial region, she suffered from painful spasms of the masseter (jaw closing) muscles, progressive tooth loss, and degeneration of the mandibular condyles. Treatment with steroids and provision of complete dentures improved the signs and symptoms...
March 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28267827/efficacy-of-a-checklist-for-office-laboratory-communication-a-clinical-study-on-quality-outcomes-for-single-crowns
#17
Mario E Bresciano, Andrea De Maria, Marco Morello, Enrico Poglio, Guido Audenino
PURPOSE: The aim of this study was to evaluate the efficacy of a structured communication protocol between dentists and dental laboratory technicians. MATERIALS AND METHODS: A total of 112 single metal-ceramic crowns, fabricated by four different dentist-dental technician pairs, were evaluated at the clinical try-in appointment. Subsequently, each professional pair produced another 112 crowns using a checklist. RESULTS: The scores showed a statistically significant improvement in clinical outcomes with the use of a checklist by reducing adjustment times for contact area, fit, and occlusion and number of appointments...
March 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28267826/a-cross-sectional-study-of-the-influence-of-tooth-color-elements-on-satisfaction-with-smile-esthetics
#18
Daniela Kovacevic Pavicic, Stjepan Spalj, Ivone Uhac, Vlatka Lajnert
PURPOSE: This study investigated the influence of tooth color on patients' satisfaction with the esthetics of their smiles. MATERIALS AND METHODS: A shade guide was used to determine the color of the maxillary anterior teeth in 671 participants. Self-reported satisfaction was assessed through five criteria: tooth appearance, color, shape, and position and appearance of the gingiva. The Psychosocial Impact of Dental Aesthetics Questionnaire and an Oral Impact on Daily Performances questionnaire were also used...
March 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28267825/clinical-monitoring-of-tooth-wear-progression-in-patients-over-a-period-of-one-year-using-cad-cam
#19
Khaled E Ahmed, John Whitters, Xiangyang Ju, S Gareth Pierce, Charles N MacLeod, Colin A Murray
PURPOSE: The aim of this study was to clinically monitor the progression of tooth wear over a period of 1 year in a cohort of referred tooth wear patients through the use of a computer-aided design/computer-assisted manufacture (CAD/CAM) scanner and a standardized scanning/assessment methodology. MATERIALS AND METHODS: Polyether impressions were made of 11 participants (130 teeth) at baseline and at 1 year. Impressions were poured in type IV dental stone and the anterior teeth were 3D scanned...
March 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28267824/correlation-between-micromotion-and-gap-formation-at-the-implant-abutment-interface
#20
Tanja Grobecker-Karl, Matthias Karl
PURPOSE: This study aimed to correlate micromotion and gap measurements at the implant-abutment interface. MATERIALS AND METHODS: A total of 10 implant-abutment assemblies were subjected to micromotion measurements under cyclic loading and subsequently quartered and inspected under a light microscope to measure vertical and horizontal gaps between implant and abutment. Statistical analysis was based on Pearson product-moment correlations (α = .05). RESULTS: Micromotion varied from 8...
March 2017: International Journal of Prosthodontics
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