Accuracy of Intraoral Scanner for Recording Completely Edentulous Arches-A Systematic Review.

Scanning edentulous arches during complete denture fabrication is a crucial step; however, the quality of the resulting digital scan is still questionable. The purpose of this study is to systematically review studies (both clinical and in vitro) and determine whether intraoral scanners have clinically acceptable accuracy when recording completely edentulous arches for the fabrication of removable complete dentures. An electronic search in medical databases like PubMed, Scopus, and Web of Science (WOS), using a combination of relevant keywords, retrieved 334 articles.

Influence of age, training, intraoral scanner, and software version on the scan accuracy of inexperienced operators.

Purpose: To evaluate the effect of operator age on the scan accuracy (trueness and precision) of inexperienced operators when compared with experienced operators, and how training, intraoral scanner (IOS), and software version affect scan accuracy.

Material And Methods: Thirty-four operators were sorted into groups: G1 (operators <25 years old, no experience), G2 (operators >40 years old, no experience), and G3 (experienced IOS operators). They conducted partial-arch scans before and after a 4-session training with two IOSs (Trios 3 and True Definition) and two software versions.

Three tests to determine a preferred chewing side in partially edentulous patients: A pilot study.

Statement Of Problem: Determining the preferred chewing side may be an important factor in prosthetic treatment planning, especially where additional support for a removable dental prosthesis can be provided by implants.

Purpose: The purpose of this clinical study was to investigate the validity and reproducibility of 3 different tests to determine the preferred chewing side.

Material And Methods: A total of 82 partial denture wearers, with an average age of 70 years, were enrolled in this study.

The Impact of Xerostomia on Food Choices-A Review with Clinical Recommendations.

Xerostomia and hyposalivation are highly prevalent conditions in old age, particularly among multimorbid elders, and are often attributed to the use of multiple medications. These conditions negatively affect oral functions, such as chewing, swallowing, speech, and taste. Additionally, the lack of lubrication of the oral mucosa frequently leads to super-infections with candida.

Exploring preferences of older adults for dental services: A pilot multi-national discrete choice experiment.

Objectives: To pilot an exploration of older adults' future preferences using discrete choice experiments to understand who should provide dental examinations and treatment, where these services should be provided, and participants' willingness to pay and willingness to travel.

Background: The proportion of older adults in the general population is increasing and is recognised as a pressing public health challenge.

Materials And Methods: Older people aged 65 years and over were recruited into this study from the UK, Switzerland and Greece.

Masticatory performance in oral function assessment: Alternative methods.

Background: Masticatory function declines with age or disease, implicating a poor chewing efficiency and an often-unconscious change for a less healthy, yet easy to chew diet. Timely screening of masticatory function may foster an early-onset diagnosis and potential treatment. The aim of this study was to compare alternative diagnostic tools for masticatory function to a Jelly-scan test.

Fit and retention of complete denture bases: Part I - Conventional versus CAD-CAM methods: A clinical controlled crossover study.

Statement Of Problem: Clinical evidence is sparse on whether dentures fabricated by computer-aided design and computer-aided manufacturing (CAD-CAM) methods afford superior fit and retention when compared with those fabricated conventionally.

Purpose: The purpose of this clinical controlled crossover study was to evaluate the peak retention force and fit of CAD-CAM manufactured (3D printed and milled) maxillary complete denture bases and conventional heat-polymerized bases (control).

Material And Methods: Twenty participants with edentulous maxillary arches were recruited.

Fit and retention of complete denture bases: Part II - conventional impressions versus digital scans: A clinical controlled crossover study.

Statement Of Problem: Although the intraoral scanning of edentulous ridges is feasible, clinical evidence that the resulting denture retention is equivalent to that achieved with conventional impressions is lacking.

Purpose: The purpose of this clinical study was to determine the retention of complete denture bases fabricated from digital intraoral scans versus conventional impressions by using border molding and posterior palatal seal compression.

Material And Methods: Twenty volunteers with an edentulous maxilla were recruited.

Oral function and nutritional status in non-acute hospitalised elders.

Introduction: Malnutrition and risk of malnutrition continues to be a common finding in elders, yet its association with oral function in hospitalised patients remains unclear.

Material And Methods: Patients aged 70 years or over who had been hospitalised for non-acute rehabilitation were recruited. Nutritional risk was screened using the Mini-Nutritional Assessment Short Form (MNA-SF) and Nutritional Risk Screening (NRS) scores.

Validation of a novel diagnostic tool for decreased tongue pressure.

Introduction: Reduced tongue pressure may render eating and swallowing difficult. The purpose of this study was to investigate whether the tongue training device can also be used as a diagnostic device and whether its sensitivity and specificity are equal to the numerical tongue pressure measuring device.

Material And Methods: The target group is patients aged 70 years and over who are hospitalised for rehabilitation.

Effects of overnight storage conditions on conventional complete removable prostheses.

Purpose: To evaluate the effects of overnight storage conditions on the dimensional stability and retention of prostheses, as well as the participant's subjective perception of these interventions.

Materials And Methods: Subjects with maxillary complete prostheses (CRPs) were randomly assigned to receive two interventions in a crossover design: storing the CRPs overnight in a dry or wet environment with a cleansing tablet. The denture intaglio surface was scanned, and outcome measures were collected before each intervention (BLN), post ntervention (PIS), and after immersion in water for 15 minutes after the intervention (WOC).

Comparison of the accuracy of optical impression systems in three different clinical situations.

Purpose: To investigate the differences in accuracy (trueness and precision) of five different optical impression systems.

Materials And Methods: The accuracy of the following optical impression systems was tested: (1) CEREC Bluecam (BL; Dentsply Sirona), (2) CEREC Omnicam (OM, Dentsply Sirona); (3) PlanScan (PL; Planmeca); (4) True Definition Scanner (TD; 3M ESPE); and (5) Trios 3 (TR; 3Shape). A standard plastic study model represented a patient with a fully dentate maxilla (ANA-4 V CER, frasaco).

Exploring Older Swiss People's Preferred Dental Services for When They Become Dependent.

The objective of this study was to explore the preferred dental services of older people for when they become dependent. It aimed to assess their preferred type of health care professional and location of dental service, and relate their preferences to their willingness to pay (WTP) and willingness to travel (WTT). Older people aged 65 years or older were invited to participate in a questionnaire-based discrete choice experiment (DCE), to measure preferences for dental examinations and treatment, defined by two attributes: type of professional and location of the activity.

Oral care knowledge, attitude and practice: Caregivers' survey and observation.

Objectives: This study aims to assess caregivers' knowledge, perception and perceived barriers as well as their daily usual practice concerning oral care provision in a geriatric hospital.

Methods: A semi-structured questionnaire was developed and administered to caregivers in a geriatric ward. Furthermore, oral care delivery to dependent and independent patients was clinically observed.

In silico evaluation of the peripheral and inner seals in complete denture master impressions using a custom-developed 3D software.

Objectives: Despite the complexity of the edentulous anatomy, little evidence exists as to what impression techniques and materials should be employed for an optimal result. The aim of this in silico study was to evaluate the trueness of peripheral and inner seals of different edentulous jaw impressions.

Materials And Methods: Twelve maxillary edentulous participants (male = 8, female = 4; age 68.

Pneumonia prevention in the elderly patients: the other sides.

Pneumonia is one of the leading causes of morbidity and mortality from infection in elderly patients. The increased frequency of pneumonia among elderly subjects can be explained by the physiological changes linked to the progressive aging of the respiratory tree and the diminished immunological response. A spiral of event leads to frailty, infection and possible death; preventing pneumonia consists of controlling the risk factors.

In vitro retention force changes during cyclic dislodging of three novel attachment systems for implant overdentures with different implant angulations.

Objectives: This in vitro study aimed to compare changes in retentive force due to cyclic dislodging of three novel un-splinted attachments.

Materials And Methods: Experimental models simulating a mandibular two-implant overdenture situation, with implants positioned with various interimplant discrepancies (0°, 20°, 40°, and 60°) were fabricated. Three attachment systems were tested, "N": a straight or 15°-angulated stud; "L": a sole straight stud; and "C": a straight or individually angulated stud.

Edentulous jaw impression techniques: An in vivo comparison of trueness.

Statement Of Problem: Simplified edentulous jaw impression techniques have gained popularity, while their validity has not yet been evaluated.

Purpose: The purpose of this clinical study was to compare the trueness of maxillary edentulous jaw impressions made with irreversible hydrocolloid (ALG), polyvinyl siloxane (PVS), PVS modified with zinc oxide eugenol (ZOE) (PVSM), and an intraoral scanner (TRI) with a conventionally border-molded ZOE impression (control).

Material And Methods: Twelve edentulous maxillary impressions were made with the impression techniques.

[Pneumonia of the elderly and its link to oral health].

Pneumonia is a frequent and serious disease among the elderly, often associated with functional and cognitive impairments, dysphagia, malnutrition and immunosenescence. Although the link between the oral hygiene and the risk of pneumonia has been established, the oral status and swallowing function are not routinely screened in the context of a geriatric assessment. Bacteria from oral plaque are regularly aspirated into the lungs and periodontitis induces a chronic inflammation favoring the oral and respiratory epithelial colonization with respiratory pathogens, hence facilitating infections.

Effect of grinding and polishing on roughness and strength of zirconia.

Statement Of Problem: The clinical applications of high-translucency monolithic zirconia restorations have increased. Chairside and laboratory adjustments of these restorations are inevitable, which may lead to increased roughness and reduced strength. The influence of grinding and polishing on high-translucency zirconia has not been investigated.