EFFECT OF IMPRESSION TECHNIQUES ON SOFT TISSUE VERTICAL DISPLACEMENT IN REMOVABLE PARTIAL DENTURE. A PILOT STUDY

Abstract Purpose: The purpose of this study was to evaluate the vertical displacement of soft tissue during different impression procedures using various spacing of the custom tray, and to determine which impression technique would allow the minimal movement. Material and Methods: 21 partially edentulous subjects were selected and enrolled in the study. Each one of them was subjected to four different impression procedures: three alginate impressions with different spacing of the custom tray and one composed with different impression materials, then casts were constructed. Light-curing acrylic occlusal platform was constructed on the primary model and perforated in 10 different points. The plate was positioned on each of the 4 plaster models, then in the mouth; and the distance between the plate and the top of the crest was measured. Each measurement was repeated three times and the mean was recorded. Repeated measures analyses of variance followed by Bonferroni multiple comparisons were conducted to explore the difference among the groups. The alpha error was set at 0.05. Results: The mean measurement of the distance between the plate and the top of the crest was significantly different among groups (-p-valu

Adaptation et validation transculturelle d’un questionnaire de qualité de vie liée à la santé orale des sujets complètement édentés au Liban

The objectives of the present study were to adapt and validate transculturally the Arabic version of the OHIP-EDENT in a group of completely edentulous Lebanese individuals aged 60 or over. A sample of edentulous subjects aged 60 and over was recruited from the Department of Removable Prosthodontics, at the Saint-Joseph Unoversity of Beirut, and from a private medical clinic in Beirut. The Arabic version of OHIP-EDENT was applied. It comprised 19 items grouped into seven dimensions:functional limitation, pain, psychological discomfort, physical incapacity, psychological incapacity, social incapacity and handicap. Reproducibility, internal consistency, concurrent validity and discriminant validity were assessed. Two hundred and two participants were included in the study. The average age was 72.94 ± 7.378 years and 51% were women. The OHIP-EDENT presented good reproducibility (Intra-class correlation coefficient equal to 0.922), good internal consistency (Cronbach’s Alpha coefficient equal to 0.929) and good concurrent validity. OHIP-EDENT was significantly associated with using functional prostheses, prosthetic status, stability of the prostheses and the number of years the prostheses were worn (p \u3c0.05).The Lebanese version of OHIP-EDENT has shown good psychometric properties. The properties of OHIP-EDENT should be compared with other OHRQoL tools according to cross-sectional and prospective studies to confirm the results obtained

ORAL HEALTH OF COMPLETELY EDENTULOUS PATIENTS DURING THE COVID-19 PANDEMIC AND ITS IMPACT ON THEIR NUTRITIONAL STATUS: A PILOT STUDY

The COVID-19 pandemic, declared by the WHO on May 2020, has forced governments around the world to adapt several restrictive measures causing difficulties of access to oral healthcare. In Lebanon, a lack of data on these difficulties and their consequences for completely edentulous people prompted the realization of a pilot study evaluating the impact of this pandemic on access to oral healthcare and on the oral health status, oral health-related quality of life (OHRQoL), and nutritional status of these individuals. The study was conducted at the Removable Prosthodontics Department of the Faculty of Dentistry at Saint-Joseph University of Beirut through a personal interview including the use of the Lebanese version of the Oral Health Impact Profile for Edentulous Patients (OHIP-EDENT) and the Arabic versions of the Activity of Daily Living index (ADL), and the Mini Nutritional Assessment index (MNA) questionnaires, followed by a clinical examination. Data collection from 17 completely edentulous subjects showed high difficulty in accessing oral healthcare and negative repercussions on their oral health, OHRQoL and nutrition

Hybrid implant supported prosthesis: Transfer of prosthetic data to the laboratory. 4 clinical cases

The transfer of data to the laboratory remains the key to the success of hybrid implant supported prosthesis

Comparaison morphologique de deux empreintes myodynamiques : étude pilote

Numerous studies have compared dentures fabricated using neutral zone and conventional techniques. However, studies comparing swallowing and phonetic techniques for location and shape assessment of the neutral zone using the same material could not be found in the literature.The purpose of this study was to compare the outline form of the phonetic and swallowing neutral zone impression techniques for the same subject. Five edentulous patients with advanced mandibular ridge resorption were included in this study. For each subject, 2 trays were prepared in autopolymerizing acrylic resin. Impressions were made using the same autopolymerizing resin. Nonetheless, one method used phonetics to shape the neutral zone while the second used swallowing. The resulting neutral zone impressions were leveled at the same occlusal height. Lines indicating molar, premolar, canine regions and the midline were marked on one impression and duplicated onto the cast and onto the second impression. Zinc oxide paste was used to mark the lines made on the impressions. Vertical cuts were made using cone beam technology and cuts showing zinc oxide were selected. After measurement of the occlusal height, cuts were superimposed and measured to determine shifting of the buccal and lingualcontours. Piezography was found significantly larger than the neutral zone in the right molar and premolar regions whereas the neutral zone was found significantly larger in the left canine region. Buccal shifting measurement showed a significantly lingual position of the neutral zone in the right molar and premolar regions, a significantly buccal position of the neutral zone in the right and left canine regions and the midline. Lingual shifting measurement showed a significantly lingual position of the neutral zone in the right molar and premolar regions, a buccal positioning of the left molar, right canine regions and the midline (p ≤ 0.005). Within the limitations of the present study, swallowing and phonetics showed different positions of the neutral zone. The phonetic neutral zone appeared to be larger than the swallowing neutral zone with a more lingual position of the anterior region

Social inequalities in oral health in a group of older people in a Middle Eastern country: a cross-sectional survey

International audienc