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Journal of Advanced Prosthodontics

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https://www.readbyqxmd.com/read/28435624/metal-stain-on-monolithic-zirconia-restoration-a-case-report
#1
Min-Sang Cha, Sang-Woon Lee, Yoon-Hyuk Huh, Lee-Ra Cho, Chan-Jin Park
In restorative treatment using fixed dental prostheses, dentists should select appropriate restoration material among various types of dental materials. The strength, marginal fit, esthetics, wear resistance, biocompatibility, and cost are important factors in the choice of restoration materials. The present case showed a surface stain on a monolithic zirconia restoration that was due to wear between the monolithic zirconia restoration and the base metal alloy restoration. This phenomenon was confirmed by surface roughness measurement and electron probe micro-analysis...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435623/influence-of-nano-structured-alumina-coating-on-shear-bond-strength-between-y-tzp-ceramic-and-various-dual-cured-resin-cements
#2
Jung-Jin Lee, Jung-Yun Choi, Jae-Min Seo
PURPOSE: The purpose of this study was to evaluate the effect of nano-structured alumina surface coating on shear bond strength between Y-TZP ceramic and various dual-cured resin cements. MATERIALS AND METHODS: A total of 90 disk-shaped zirconia specimens (HASS CO., Gangneung, Korea) were divided into three groups by surface treatment method: (1) airborne particle abrasion, (2) tribochemicalsilica coating, and (3) nano-structured alumina coating. Each group was categorized into three subgroups of ten specimens and bonded with three different types of dual-cured resin cements...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435622/role-of-span-length-in-the-adaptation-of-implant-supported-cobalt-chromium-frameworks-fabricated-by-three-techniques
#3
Ying Zhou, Yong Li, Xiao Ma, Yiqing Huang, Jiawei Wang
PURPOSE: This study evaluated the effect of span length on the adaptation of implant-supported cobalt chromium frameworks fabricated by three techniques. MATERIALS AND METHODS: Models with two solid abutment analogs at different inter-abutment distances were digitized using a laboratory scanner. Frameworks of two-, three-, and four-unit fixed prostheses were designed by a computer. Six dots with a diameter of 0.2 mm were preset on the surface of each framework. A total of 54 implant-supported cobalt chromium frameworks were fabricated by milling, selective laser melting (SLM), and cast techniques...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435621/the-effect-of-plasma-on-shear-bond-strength-between-resin-cement-and-colored-zirconia
#4
Chan Park, Seung-Hwan Yoo, Sang-Won Park, Kwi-Dug Yun, Min-Kyung Ji, Jin-Ho Shin, Hyun-Pil Lim
PURPOSE: To investigate the effect of non-thermal atmospheric pressure plasma (NTAPP) treatment on shear bond strength (SBS) between resin cement and colored zirconia made with metal chlorides. MATERIALS AND METHODS: 60 zirconia specimens were divided into 3 groups using coloring liquid. Each group was divided again into 2 sub-groups using plasma treatment; the experimental group was treated with plasma, and the control group was untreated. The sub-groups were: N (non-colored), C (0...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435620/the-effect-of-resin-cement-type-and-cleaning-method-on-the-shear-bond-strength-of-resin-cements-for-recementing-restorations
#5
Roodabeh Koodaryan, Ali Hafezeqoran, Amin Khakpour Maleki
PURPOSE: This laboratory study assessed the effect of different dentin cleaning procedures on shear bond strength of resin cements for recementing prosthesis. MATERIALS AND METHODS: 4 × 4 flat surface was prepared on the labial surface of 52 maxillary central incisors. Metal frames (4 × 4 × 1.5 mm) were cast with nickel-chromium alloy. All specimens were randomly divided into 2 groups to be cemented with either Panavia F2.0 (P) or RelyX Ultimate (U) cement. The initial shear bond strength was recorded by Universal Testing Machine at a crosshead speed of 0...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435619/acid-etching-of-glass-infiltrated-zirconia-and-its-biological-response
#6
Van Thi Vu, Gye-Jeong Oh, Kwi-Dug Yun, Hyun-Pil Lim, Ji-Won Kim, Thao Phuong Thi Nguyen, Sang-Won Park
PURPOSE: The purpose of this study was to evaluate the influence of acid etching treatment on surface characteristics and biological response of glass-infiltrated zirconia. MATERIALS AND METHODS: A hundred zirconia specimens were divided into four groups depending on surface treatments: untreated zirconia (group Z); acid-etched zirconia (group ZE); glass-infiltrated zirconia (group ZG); and glass-infiltrated and acid-etched zirconia (group ZGE). Surface roughness, surface topography, surface morphology, and Vickers hardness of specimens were evaluated...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435618/comparative-study-of-abutment-screw-loosening-with-or-without-adhesive-material
#7
Mahnaz Arshad, Gholamreza Shirani, Sina Refoua, Mohammadreza Rahimi Yeganeh
PURPOSE: The purpose of this study was to achieve more retention and stability and to delay or prevent screw loosening. MATERIALS AND METHODS: Twenty implants (Implantium 3.4 mm, Dentium, Seoul, Korea) were divided into 2 groups (n = 20). In the first group, an adhesive material was applied around the screw of the abutments (test group). In the second group, the screws are soaked in saliva (control group). All the screws were torqued under 30 N/cm, Then, the samples were gone through a cyclic fatigue loading process...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435617/analysis-of-the-width-ratio-and-wear-rate-of-maxillary-anterior-teeth-in-the-korean-population
#8
Yeon-Ah Oh, Hong-So Yang, Sang-Won Park, Hyun-Pil Lim, Kwi-Dug Yun, Chan Park
PURPOSE: The purpose of this study was to compare the width ratio of maxillary anterior teeth according to age in the Korean population and to evaluate the maxillary central incisor width-to-length (W/L) ratio, given differences in age and gender. MATERIALS AND METHODS: Ninety-three Korean adults were divided into 3 groups (n = 31) by age. Group I was 20 - 39 years old, Group II was 40 - 59 years old, and Group III was over 60 years of age. After taking an impression and a cast model of the maxillary arch, the anterior teeth width ratio and central incisor W/L ratio were calculated from standard digital images of the cast models using a graph paper with a digital single lens reflex (DSLR) camera...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435616/tooth-surface-treatment-strategies-for-adhesive-cementation
#9
Nadja Rohr, Jens Fischer
PURPOSE: The aim of this study was to evaluate the effect of tooth surface pre-treatment steps on shear bond strength, which is essential for understanding the adhesive cementation process. MATERIALS AND METHODS: Shear bond strengths of different cements with various tooth surface treatments (none, etching, priming, or etching and priming) on enamel and dentin of human teeth were measured using the Swiss shear test design. Three adhesives (Permaflo DC, Panavia F 2...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435615/effect-of-zirconia-surface-treatment-using-nitric-acid-hydrofluoric-acid-on-the-shear-bond-strengths-of-resin-cements
#10
Jin Hyung Cho, Sun Jai Kim, June Sung Shim, Keun-Woo Lee
PURPOSE: The aim of this study was to compare the surface roughness of zirconia when using Zircos E etching system (ZSAT), applying a nitric acid-hydrofluoric acid compound as a pretreatment agent, and also to compare the shear bonding strength according to different resin cements. MATERIALS AND METHODS: ZSAT, air abrasion, and tribochemical silicacoating were applied on prepared 120 zirconia specimens (10 mm in diameter, 7 mm in height) using CAD/CAM. Each 12 specimens with 4 different resin cements (Panavia F 2...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243395/use-of-polyaryletherketone-paek-based-polymer-for-implant-supported-telescopic-overdenture-a-case-report
#11
Chan Park, Dae-Jeon Jun, Sang-Won Park, Hyun-Pil Lim
Although many prosthetic materials exist for fabrication of implant-supported telescopic overdentures, available materials have not been thoroughly evaluated from a functional standpoint. This case report describes the use of polyaryletherketone (PAEK) based polymer for an implant-supported telescopic overdenture, a seldom used material in dentistry. This material is lighter than traditional materials, can accommodate changes in retentive forces, and is an easily retrievable by CAD/CAM fabrication. This case highlights the possibility of using new polymer materials for implant-supported telescopic overdentures...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243394/the-effect-of-coloring-liquid-dipping-time-on-the-fracture-load-and-color-of-zirconia-ceramics
#12
Ekren Orhun
PURPOSE: The aims of the study were to evaluate the fracture load of zirconia core material after dipping in coloring liquid at different time intervals and to compare the color of dipped blocks with that of prefabricated shaded blocks. MATERIALS AND METHODS: 3-unit bridge frameworks were designed digitally. Sixty frameworks were fabricated using uncolored zirconia blocks by CAD/CAM and divided into 4 groups randomly (n = 15). Group 2 (G2) was subjected to coloring liquids for 2 minutes, Group 4 (G4) for 4 minutes, and Group 6 (G6) for 6 minutes...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243393/the-effect-of-repeated-bonding-on-the-shear-bond-strength-of-different-resin-cements-to-enamel-and-dentin
#13
Ali Can Bulut, Saadet Sağlam Atsü
PURPOSE: Cementation failures of restorations are frequently observed in clinical practice. The purpose of this study is to compare the effect of initial and repeated bonding on the bond strengths of different resin cements to enamel and dentin. MATERIALS AND METHODS: Ninety human maxillary central incisors were bisected longitudinally. The 180 tooth halves were divided into 2 groups (n = 90) for enamel and dentin bonding. The enamel and dentin groups were further divided into 3 groups (n = 30) for different resin cement types...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243392/comparison-of-the-bond-strength-of-ceramics-to-co-cr-alloys-made-by-casting-and-selective-laser-melting
#14
Shirin Lawaf, Shahbaz Nasermostofi, Mahtasadat Afradeh, Arash Azizi
PURPOSE: Considering the importance of metal-ceramic bond, the present study aimed to compare the bond strength of ceramics to cobalt-chrome (Co-Cr) alloys made by casting and selective laser melting (SLM). MATERIALS AND METHODS: In this in-vitro experimental study, two sample groups were prepared, with one group comprising of 10 Co-Cr metal frameworks fabricated by SLM method and the other of 10 Co-Cr metal frameworks fabricated by lost wax cast method with the dimensions of 0...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243391/effect-of-different-lateral-occlusion-schemes-on-peri-implant-strain-a-laboratory-study
#15
Jennifer Lo, Jaafar Abduo, Joseph Palamara
PURPOSE: This study aims to investigate the effects of four different lateral occlusion schemes and different excursions on peri-implant strains of a maxillary canine implant. MATERIALS AND METHODS: Four metal crowns with different occlusion schemes were attached to an implant in the maxillary canine region of a resin model. The included schemes were canine-guided (CG) occlusion, group function (GF) occlusion, long centric (LC) occlusion, and implant-protected (IP) occlusion...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243390/microtensile-bond-strength-of-repaired-indirect-resin-composite
#16
Porntida Visuttiwattanakorn, Kallaya Suputtamongkol, Duangjai Angkoonsit, Sunattha Kaewthong, Piyanan Charoonanan
PURPOSE: The objective of this study was to investigate the effect of surface treatments on microtensile bond strengths (MTBSs) of two types of indirect resin composites bonded to a conventional direct resin composite. MATERIALS AND METHODS: Indirect resin composite blocks of Ceramage and SR Nexco were prepared in a plastic mold having a dimension of 10 × 10 × 4 mm. These composite blocks were divided into three groups according to their surface treatments: Group1: Sandblast (SB); Group2: Sandblast and ultrasonically clean (SB+UL); Group3: Sandblast plus silane (SB+SI)...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243389/three-dimensional-finite-element-analysis-of-platform-switched-implant
#17
Se-Young Moon, Young-Jun Lim, Myung-Joo Kim, Ho-Beom Kwon
PURPOSE: The purpose of this study was to analyze the influence of the platform switching concept on an implant system and peri-implant bone using three-dimensional finite element analysis. MATERIALS AND METHODS: Two three-dimensional finite element models for wide platform and platform switching were created. In the wide platform model, a wide platform abutment was connected to a wide platform implant. In the platform switching model, the wide platform abutment of the wide platform model was replaced by a regular platform abutment...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243388/comparison-of-the-fracture-resistances-of-glass-fiber-mesh-and-metal-mesh-reinforced-maxillary-complete-denture-under-dynamic-fatigue-loading
#18
So-Min Im, Yoon-Hyuk Huh, Lee-Ra Cho, Chan-Jin Park
PURPOSE: The aim of this study was to investigate the effect of reinforcing materials on the fracture resistances of glass fiber mesh- and Cr-Co metal mesh-reinforced maxillary complete dentures under fatigue loading. MATERIALS AND METHODS: Glass fiber mesh- and Cr-Co mesh-reinforced maxillary complete dentures were fabricated using silicone molds and acrylic resin. A control group was prepared with no reinforcement (n = 15 per group). After fatigue loading was applied using a chewing simulator, fracture resistance was measured by a universal testing machine...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243387/the-influence-of-the-number-and-the-type-of-magnetic-attachment-on-the-retention-of-mandibular-mini-implant-overdenture
#19
Eunjee Lee, Soo-Yeon Shin
PURPOSE: The aim of this study was to compare the retention of mini implant overdenture by the number, the type of magnetic attachment, and the directions of applied dislodging force. MATERIALS AND METHODS: The experimental groups were designed by the number and type of magnetic attachment. Twenty samples were tested with Magden implants. Each attachment was composed of the magnet assembly in overdenture sample and the abutment keeper in a mandibular model. Dislodging forces were applied to the overdenture samples (50...
February 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28243386/comparison-of-the-fit-of-cast-gold-crowns-fabricated-from-the-digital-and-the-conventional-impression-techniques
#20
Mi-Jung Yun, Young-Chan Jeon, Chang-Mo Jeong, Jung-Bo Huh
PURPOSE: The purpose of this study was to compare the fit of cast gold crowns fabricated from the conventional and the digital impression technique. MATERIALS AND METHODS: Artificial tooth in a master model and abutment teeth in ten patients were restored with cast gold crowns fabricated from the digital and the conventional impression technique. The forty silicone replicas were cut in three sections; each section was evaluated in nine points. The measurement was carried out by using a measuring microscope and I-Soultion...
February 2017: Journal of Advanced Prosthodontics
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