INTRODUCTION A dental impression is a negative imprint of an oral structure that can be used to produce a positive cast of a patient's teeth as a permanent record. The accuracy of the impression affects the accuracy of the cast, and a precise impression is needed in order to create prosthesis with optimal fitting. Minimization of misfit is an important aim in prosthesis science and dental impla...

aAssistant Professor, Division of Prosthodontics, Institute of Odontology, Faculty of Medicine, Vilnius University. bResident, Division of Prosthodontics, Institute of Odontology, Faculty of Medicine, Vilnius University. cPrivate practice, Vilnius, Lithuania. dLecturer, Division of Orthodontics, Institute of Odontology, Faculty of Medicine, Vilnius University. (J Prosthet Dent 2011;106:204-205)...

Background: In children with Down syndrome (DS) the retarded growth potential cause a number of different clinical signs. Morphological deviations and an underdeveloped midface together with hypotonia contribute to increased prevalence of occlusal anomalies. Since the early 1980 ́s orofacial neuro-motor habilitation with palatal plates therapy have been used in Sweden. Aim: to investigate if use...

Introduction: This clinical case aimed at showing the designing procedure for Removable Partial Denture (RPD) framework from an optical impression. The patient presented partially edentulous mandibular arch (Kennedy Class III) where RPD was planned for economic reasons. Optical impression was chosen due to the presence of a strong gag reflex and a small mouth opening. The impression was then se...

The aim of this study was to evaluate the ability to resist disinfection of a polymicrobial association contaminating the surface of dental impressions obtained with two different elastomers: a polyether (Impregum) and an addition-polymerized silicone (Elite). Impressions were contaminated with a mixture of three biofilm-forming microorganisms (Staphylococcus aureus, Pseudomonas aeruginosa and ...

STATEMENT OF PROBLEM Little peer-reviewed information is available regarding the accuracy and reproducibility of digitally fabricated casts compared to conventional nondigital methods. PURPOSE The purpose of this in vitro study was to compare the accuracy and reproducibility of a digital impression and cast fabrication with a conventional impression and cast fabrication. MATERIAL AND METHOD...

Precise transfer of three-dimensional position of dental implants from oral cavity to the cast needs special considerations in impression making. It has been suggested to splint the copings by bars or acrylic resin material before making impression. Some problems regarding to polymerization shrinkage of acrylic resin have been reported. In this study, we describe a metalacrylic bar tha...