Recording maximal intercuspation and border positions of the mandible with intraoral scanner using the acquisition software's multi-occlusion function.

Purpose: This study was conducted to investigate the accuracy of intraoral scanner (IOS) for recording maximal intercuspal position (MIP) and border positions of the mandible.

Materials And Methods: Maxillary and mandibular master casts were articulated in MIP, protrusive, and lateral interocclusal position sequentially on a semi-adjustable articulator. For each articulation relation, sites of occlusal contacts (SOCs) and sites of clearance (SCs) were identified on the master casts with articulating paper (reference sites).

Randomized clinical trial of zirconia laminate veneers sintered by using conventional versus speed process: 1-year follow-up.

Statement Of Problem: The application of highly translucent multilayered zirconia ceramic in minimally invasive esthetic dentistry allows the achievement of both esthetics and strength with minimal thickness. Clinical studies that have assessed the performance of zirconia ultrathin veneers sintered with the conventional and speed procedure are lacking.

Purpose: The purpose of this clinical study was to evaluate the effect of speed sintering processes on the translucency and clinical performance of zirconia laminate veneers.

Preparation of ultrathin translucent zirconia laminate veneers using 3D printing reduction guides.

Minimizing and controlling the amount of tooth reduction during the preparation of ultrathin laminate veneers is a challenge for minimally invasive dentistry. The use of reduction guides is advised to reach the optimal space required for the definitive restoration without excessive reduction. The digital production of a reduction guide used to control tooth preparation for ultrathin laminate veneers is described.

Translucency of recent zirconia materials and material-related variables affecting their translucency: a systematic review and meta-analysis.

Background: Recent forms of translucent zirconia material have been developed, offering a wide range of options and varieties for enhancing aesthetics, making it a preferred choice in the field of prosthetic dentistry. However, there is insufficient understanding regarding the recent types of zirconia materials and their optical behavior. Understanding the variables that influence the translucency of zirconia and identifying strategies to enhance its esthetics are crucial.

Effect of sintering time on microstructure and optical properties of yttria-partially stabilized monolithic zirconia.

Objectives: To evaluate the impact of speed sintering on the microstructure and optical properties of 3 and 5 mol% yttria-partially stabilized monolithic zirconias.

Methods: 120 plate-shaped zirconia specimens (10x10x 0.4 mm) were prepared from three commercial 5 mol% yttria-partially stabilized zirconia blocks (5Y-PSZs); Katana UTML (Kuraray Noritake), Cercon xtML (Dentsply Sirona), and Zolid FX white (Amann Girrbach), and two commercial 3 mol% yttria-partially stabilized zirconia blocks (3Y-PSZs); Lava Plus (3 M ESPE) and InCoris (Sirona, GmbH).

Effect of mouth rinses on the stainability of monolithic lithium disilicate glass-ceramics with different surface treatments: An in vitro study.

Statement Of Problem: Mouth rinses have been reported to cause tooth surface discoloration. However, information regarding their effect on the stainability of monolithic glass-ceramics with different surface treatments is lacking.

Purpose: The purpose of this in vitro study was to assess the effect of mouth rinses on the color change of milled and pressed monolithic lithium disilicate glass-ceramics with different surface treatments.

Effect of pattern materials and fabrication techniques on the color of a pressed lithium disilicate ceramic: An in vitro study.

Statement Of Problem: Pattern materials and their fabrication techniques have been reported to affect the marginal accuracy and internal fit of pressed lithium disilicate ceramic restorations. However, information regarding their effect on the color of such restorations is lacking.

Purpose: The purpose of this in vitro study was to evaluate the color of a pressed lithium disilicate glass-ceramic fabricated from wax or resin patterns by using conventional and milling techniques.

Effect of additional pressing on the color and translucency of pressable ceramic materials: An in vitro study.

Statement Of Problem: Whether reusing the buttons of pressable ceramic materials affects their color or translucency is unclear.

Purpose: The purpose of this in vitro study was to investigate the effect of additional pressing on the color and translucency of 3 different lithium disilicate ceramic brands.

Material And Methods: Seventy-two disk-shaped ceramic specimens (Ø14×1.

A device to facilitate separation of components of combined screw- and cement-retained implant-supported crowns.

This article describes a technique to separate parts of cemented implant-supported restorations with a screw hole. A device was designed by using a computer-aided design (CAD) program and was milled in a milling center. The restoration was heated to 400 °C and then subjected to controlled mechanical force with the help of the device to separate the cemented parts.

Fabrication of a CAD-CAM custom healing abutment guided by a conventional dental radiograph for delayed loaded dental implants: A dental technique.

This article describes a technique for fabricating a custom anatomic healing abutment for delayed loaded implants by using the computer-aided design and computer-aided manufacturing (CAD-CAM) technology from a polymethyl methacrylate (PMMA) blank. The dimensions of the custom healing abutment are measured from a conventional dental radiograph and diagnostic casts. The healing abutment is used in the second surgical stage to guide soft tissue healing.

Evaluation of color duplication in metal-ceramic complexes using visual and instrumental shade-matching systems.

This study was designed to evaluate color differences (DE) between intended and fabricated shades of various metal-ceramic complexes using visual and instrumental shade determination. Forty-two master disks were made to represent every tab in two shade guides. The shades of the master disks were determined visually and instrumentally.

The effect of two fit-indicating materials and various subsequent cleaning methods on the retention of simulated crowns.

Statement Of Problem: Different cleaning methods are recommended to remove residual fit-indicating materials before definitive cementation. There is little information in the dental literature regarding the effect of these cleaning methods on the eventual retention of crowns.

Purpose: The purpose of this investigation was to evaluate the effect of various cleaning methods on the retention of simulated crowns after using disclosing wax and silicone as fit-indicating materials.

Full-mouth rehabilitation following treatment of temporomandibular disorders and teeth-related signs and symptoms.

The literature is replete with theories regarding temporomandibular disorders (TMD). However, there is a paucity of information concerning perceived malocclusion and other teeth-related signs and symptoms after full-mouth rehabilitation. This clinical study was designed to evaluate the perception of TMD patients concerning perceived malocclusion and other teeth-related signs and symptoms after full-mouth rehabilitation guided by the Mental Analog Scale (MAS).

Intrarater repeatability of shade selections with two shade guides.

Statement Of Problem: Color research has shown that shade guides do not always represent the color of natural teeth. Moreover, visual evaluation has been found to be unreliable and inconsistent.

Purpose: This investigation evaluated the effects of 2 shade guides on the intrarater repeatability (reliability) of prosthodontists and general practitioners with regard to shade selection.