This study aims to evaluate the accuracy of impression method using an intraoral scanner and conventional based on implant number angulation with multiple implants. Six implants were placed in maxillary edentulous typodont 3D modeling software. Eight another typodont. The placement for each model was different. designing printing performed produce reference models. These models scanned obtain scan data (RSD). In method, used, a gypsum produced. Scan obtained by lab (Group CI). Models IS)....

The accuracy of denture bases was compared among injection molding, milling, and rapid prototyping (RP) fabricating method.The maxillary edentulous master cast fabricated round shaped four notches were formed. duplicated to ten casts scanned. In the molding method, designed milled from a wax block using SR Ivocap system. Denture pre-polymerized in milling method. RP printed post-cured. intaglio surface base scanned matching software used measure inaccuracy. Measurements performed between two...

The attachment, growth behaviour and the genetic effect of human gingival fibroblasts (HGF) cultured on titanium different zirconia surfaces were investigated. HGF cells (1) discs with a machined surface, (2) yttrium-stabilized tetragonal polycrystals (Y-TZP) smooth surface (3) Y-TZP 100 µm grooves. cell proliferation activity was evaluated through MTT assay at 24 h 48 h, morphology examined by SEM. mRNA expression integrin-β1, type I III collagen, laminin fibronectin in RT-PCR after h. From...

Abstract Purpose We evaluated the activities of both osteoblastic and osteoclastic differentiation on sandblasted/acid etched ( SLA ), hydrophilic surfaces (mod ) pretreatment titanium PT ). Material methods The was by alkaline phosphatase analysis A lizarin R ed S staining, expression bone‐related proteins, ALP runt‐related transcription factor 2 unx2), osteopontin OPN osteocalcin OCN investigated reverse transcriptase–polymerase chain reaction RT ‐ PCR Primary mice monocytes were expanded...

Abstract – The purpose of this study was to analyse the traumatic dental injuries (TDI) Korean preschoolers by investigating occurrence, type, area, cause, injured region, seasonal variation and interval between injury treatment. In study, data from 1856 aged 4 months 6 years 11 (mean age : 3.6 ± 1.6) were used, out a total 2761 patients who attended Department Pediatric Dentistry, Kyung Hee Dental Hospital for TDI January 1998 December 2007. All statistically analysed using anova chi‐square...

This study aimed to evaluate the accuracy of static computer-assisted implant surgery (s-CAIS) by comparing planned and actual positions implants placed in a partially edentulous model using surgical templates with different sleeve designs. Forty-nine mandibular models were scanned scanner create standard tessellation language (STL) files. The divided into seven groups based on design: Group 1-4 (Open non-metal sleeves varying heights (3 mm, 6 mm) buccal widths (5 mm)), 5-6 (Closed 3 mm mm),...

Abstract Purpose: This study was designed to investigate the effect of enamel derivative matrix (EMD) on proliferation, mineralization, and differentiation human mesenchymal stem cells (hMSCs). Material methods: For proliferation assay, water‐soluble tetrazolium salt‐8 tests were carried out after culturing for 24 48 h. evaluation Alizarin red S (ARS) performed 21 days in an osteogenic medium. In order some bone‐related proteins, namely type I collagen (Col A2), bone sialoprotein (BSP),...

Purpose: The aim of this 1-year evaluation was to assess the stability implants and responses supporting tissues magnet-retained mandibular implant overdentures. Methods: Six patients with completely edentulism were enrolled in study. Each patient received 2 sandblasted large-grit acid-etched surfaces interforaminal region. loaded immediately magnet attachment-retained periimplant examined by performing clinical examinations, resonance frequency analysis, radiographic examinations at 1, 2,...

Purpose: The aim of this study was to determine the stability computer-aided design and manufacturing (CAD/CAM) prefabricated abutment by measuring removal torque before after cyclic loading. Materials Methods: Three types fixture 2 abutments were used. Removable measured loading for 5000 cycles between 25 250 N each group. same procedure performed twice. Results: First, values (Newton centimeter) stock versus custom as follows: group 1: 27.17 26.67, 2: 26.27 26.33, 3: 37.33 36.67. Second...

The articulator is a prerequisite device for the analysis of occlusion and prosthodontic treatment, it required to simulate patient jaw movements. This article describes technique obtain sagittal condylar inclination (SCI) using cone beam computed tomography (CBCT) data intraoral scan protrusive interocclusal position. SCI can be used on virtual in computer-aided design software, assist fabrication prosthesis which harmonious with mandibular movement individual patient.

STATEMENT OF PROBLEM.Poor wettability of denture relining materials may lead to retention problems and patient discomfort.PURPOSE.Purpose this study is compare evaluate nine using contact angle measurements under air water storage over time.MATERIAL AND METHODS.Nine were investigated in study.Two heat-curing polymethyl-methacrylate (PMMA) base materials: Vertex RS, Lang, one self-curing polyethyl-methacrylate (PEMA) chairside reline resin: Rebase II, six silicone Mucopren soft, Mucosoft,...

Abstract – The purpose of this study was to determine the effect stabilization splints and mouthguards on athletic ability professional golfers. For study, eight golfers with a mean age 20.5 were selected. These participants performed four trials 10 driver swings putts or without splint (control group) mouthguard. 4th trial, adjusted using simple blind test so that unaware unilateral molar contact. drive distance, club head speed, initial ball putting accuracy compared analyzed before after...

Fabricating a surveyed prosthesis beneath an existing partial removable dental (PRDP) is challenging and time-consuming procedure.The computer-aided design/computer-assisted manufacturing (CAD/CAM) technology was applied to fabricate retrofitted, zirconia PRDP.CAD/CAM enabled precise easy replication of the contour planned crown on abutment tooth.This ensured excellent adaptation fit newly fabricated PRDP with minimal adjustments.In this case report, seventy-year-old male patient presented...

This study was performed to define attachment and growth behavior of osteoblast-like cells evaluate the gene expression on zirconia compared titanium.MATERIALS AND METHODS.MC3T3-E1 were cultured (1) titanium (2) discs.The tetrazolium-based colorimetric assay (MTT test) used for examining cells.Cellular morphology examined by scanning electron microscopy (SEM) alkaline phosphatase (ALP) activity measured cell differentiation rate.Mann-Whitney test assess significance level differences between...

Abstract Cleidocranial dysplasia (CCD) is a rare congenital disorder characterized by skeletal and dental anomalies. This clinical report describes the prosthodontic approach to treating CCD patient who presented with decreased facial height relative mandibular protrusion due maxillary hypoplasia after orthodontic treatment. Functional esthetic rehabilitation was achieved using telescopic detachable prostheses in maxilla osseointegrated implants metal‐ceramic fixed mandible. These treatment...

The objective of this study was to investigate the biologic effects enamel matrix derivative (EMD) with different concentrations on cell viability and genetic expression human gingival fibroblasts (HGF) zirconia surfaces.Immortalized were cultured (1) without EMD, (2) EMD 25 µg/mL, (3) 100 µg/mL discs. MTT assay performed evaluate proliferation activity SEM carried out examine cellular morphology attachment. mRNA collagen type I, osteopontin, fibronectin, TGF-β1 evaluated real-time...