Journal of Prosthetic Dentistry

No abstract text is available yet for this article.

STATEMENT OF PROBLEM: Despite the increasing number of publications on applying artificial intelligence (AI) in the dental field, clarity regarding the performance of different approaches for nasoalveolar molding (NAM) planning and designing is lacking. Additionally, the overall robustness of the evidence in this field remains uncertain. PURPOSE: The purpose of this systematic review was to evaluate the role of AI in automating the prediction of anatomic landmarks and the design of NAM appliances...

STATEMENT OF PROBLEM: Although tapered and cylindrical implants have been widely used, a consensus on which macrogeometry offers better clinical performance is lacking. PURPOSE: The purpose of this systematic review and meta-analysis was to evaluate the influence of different macrogeometries (tapered and cylindrical) on the clinical performance of dental implants. MATERIAL AND METHODS: The study was registered in the international prospective register of systematic reviews (PROSPERO) database (CRD42022347436)...

STATEMENT OF PROBLEM: Postoperative swelling following guided bone regeneration (GBR) may affect the dimensions of interim restorations and/or delivery timing. However, quantitative assessment of post-GBR swelling or its evaluation for possible impact on regenerative outcomes is lacking. PURPOSE: The purpose of this prospective clinical study was to quantify post-GBR swelling and correlate it with clinical parameters and outcomes. MATERIAL AND METHODS: Participants (n=25) undergoing standardized extraction and GBR protocol were recruited...

STATEMENT OF PROBLEM: The integration of computer-aided design and computer-aided manufacture (CAD-CAM) technology has revolutionized restorative dentistry, offering both additive and subtractive manufacturing methods. Despite extensive research on 3-dimensionally (3D) printed materials, uncertainties remain regarding the impact of print orientation on their mechanical properties, especially for definitive resin materials, necessitating further investigation to ensure clinical efficacy...

STATEMENT OF PROBLEM: Since water is the chromophore for the erbium, chromium-yttrium scandium gallium garnet (Er,Cr:YSGG) laser, the laser energy reaching the restoration decreases as part of it is absorbed by water. Theoretically, reducing the water or implementing dry debonding could reduce the energy consumed by water, increasing laser efficiency. Studies on whether it is suitable for removing veneers without using coolant are lacking. PURPOSE: The purpose of this in vitro study was to evaluate the debonding time, intrapulpal temperature, and translucency of veneers during wet versus dry debonding with an Er,Cr:YSGG laser using different power outputs...

STATEMENT OF PROBLEM: Achieving the precise reproduction of tooth color is pivotal in esthetic restorations. However, existing visual and instrumental shade matching methods, each with inherent limitations, have often resulted in inconsistent color communication and subsequently suboptimal esthetic results in clinical practice. PURPOSE: The purpose of this in vitro study was to evaluate a 2-tier color correction strategy to accurately acquire standardized tooth color and to provide shade recommendations for esthetic restorations...

STATEMENT OF PROBLEM: Intraoral scanners have many advantages but have limited applicability for extensive tooth-supported or implant-supported prostheses because of merging errors. PURPOSE: The purpose of this study was to compare the reverse scan technique (RST) with an intraoral scanner using the traditional impression technique both in vitro and in vivo. MATERIAL AND METHODS: A participant was scanned 10 times with an intraoral scanner...

Dental practitioners often rehabilitate patients with excessive gingival display during the broad wide smile. The transition line is defined as the lip line, which depicts transition between the prosthesis and adjacent soft tissue. Correctly predicting and managing this transition line is especially important, as it determines esthetics when the patient smiles widely. Photowrapping is a digital technique used to trace the transition line on digital imaging and communications in medicine (DICOM) files by wrapping a 2-dimensional photograph onto the image, providing the soft tissue information required for esthetics and helping clinicians to determine accurately the need for bone reduction during implant planning...

STATEMENT OF PROBLEM: The use of multilayered monolithic zirconia ceramics is becoming popular because it simplifies the production of esthetic restorations. The effect of clinical adjustment on the optical properties of these ceramics, especially strength-gradient zirconia, remains unclear. PURPOSE: The purpose of this in vitro study was to evaluate the color and translucency of gradient multilayered zirconia brands after grinding and polishing. MATERIAL AND METHODS: Sixty 10×10×1-mm monolithic zirconia specimens were milled from 6 zirconia brands (Ceramill Zolid HT White, Ceramill Zolid HT Preshade, Ceramill Zolid FX Multicolor, VITA YZ XT Multicolor, IPS e...

STATEMENT OF PROBLEM: Quantitative percussion diagnostics (QPD) has been devised to nondestructively evaluate the mechanical integrity of human teeth and implants, the mechanical integrity of the underlying bone, and the presence of cracks, but the mechanism is not clearly understood. PURPOSE: The purpose of this study is to better understand the dynamic behavior of a tooth under conditions consistent with QPD by focusing on physiologically accurate 3D finite element models of a human mandibular second molar with surrounding tissues...

No abstract text is available yet for this article.

STATEMENT OF PROBLEM: Systematic reviews to determine the effectiveness of oral rehabilitation with trans-sinus dental implants in patients with an atrophic maxilla are lacking. PURPOSE: The purpose of this systematic review was to determine the effectiveness of trans-sinus dental implants installed in patients with an atrophic maxilla. MATERIAL AND METHODS: Searches were conducted in 5 databases including the nonpeer-reviewed literature up to March 2024 by 2 independent reviewers according to established inclusion and exclusion criteria and according to the question: Can trans-sinus implants be a suitable option for the rehabilitation of the atrophic maxilla? The meta-analysis was carried out using the Revman software program for the variables implant loss and marginal bone loss using a 95% confidence interval...

STATEMENT OF PROBLEM: Accurate prediction of maxillary central incisor width (CIW) is essential in prosthodontics for selecting appropriately sized denture teeth. While traditional methods exist, the digital era may offer more reliable techniques for anterior tooth selection. PURPOSE: The purpose of this study was to investigate the correlation between CIW and craniofacial measurements derived from cone beam computed tomography (CBCT) scans to identify predictors for CIW and examine possible sexual dimorphism...

STATEMENT OF PROBLEM: Mandibular guidance therapy is the preferred treatment for patients with segmental mandibulectomy after oncological surgeries. Clinicians face difficulty in decision making and delivering appropriate prosthetic treatment for the rehabilitation of these patients because of the lack of published information. PURPOSE: The purpose of this retrospective analysis was to evaluate the factors associated with mandibular deviation and to introduce a classification system of mandibular deviation and prosthetic guidelines for rehabilitating patients with segmental mandibulectomy using a mandibular guidance appliance (MGA)...

STATEMENT OF PROBLEM: The maxillary lateral incisor is often congenitally missing in patients with a cleft palate. The congenital cleft presents the practitioner with challenges including quantity and quality of bone, a surgically managed cleft correction, and limited clinical space. PURPOSE: The purpose of this investigation was to calculate the 5-year success and survival rate of narrow-diameter implants used to restore a missing lateral incisor in patients with a cleft palate...

Patients who undergo hemimandibulectomy have multiple functional impairments, and early initiation of guidance therapy has been associated with an improved definitive occlusal relationship. This article describes a digital workflow to determine the angle and form the shape of the flange of the mandibular guide plane prosthesis (MGPP), and to create an MGPP before mandibular resection surgery. A virtual articulator was used to achieve the movements of the maxilla relative to the mandible, and the shape of the MGPP was adjusted by dynamic occlusion...

STATEMENT OF PROBLEM: Additive manufacturing is used in prosthodontics for producing casts, surgical guides, and interim and definitive prostheses. Printed resin components that will be in contact with the oral mucosa must meet biocompatibility requirements in accordance with current standards for medical devices. Despite such approvals being obtained by the manufacturer, the dentist remains responsible for following the manufacturer recommendations. Evidence for the effect of postprocessing 3-dimensionally (3D) printed resin components on biocompatibility is lacking PURPOSE: The purpose of this systematic review was to assess the effectiveness of 3D printing postprocessing on the biocompatibility of resins that will be in contact with the oral mucosa...

STATEMENT OF PROBLEM: Tooth loss is a critical indicator of oral health and negatively impacts oral health-related quality of life (OHRQoL) depending on the number and location of the missing teeth. Reports of oral rehabilitation have been conflicting depending on the tooth loss pattern and prostheses provided. PURPOSE: The purpose of this population-based study was to evaluate the association between the use of different dental prostheses according to different tooth loss patterns and OHRQoL...

STATEMENT OF PROBLEM: The clinical success of ceramic veneers cemented with preheated composite resin has been reported to be acceptable. Although the cementing technique requires sufficient light energy to activate its polymerization, the ability of light to penetrate through ceramic restorations of different thicknesses is unclear. PURPOSE: The purpose of this in vitro study was to evaluate the polymerization quality and bond joint thickness of a dual-component adhesive and a heated composite resin when bonding ceramic onlays of varying thicknesses...