Does Cigarette Smoke Affect Permanent Resin-Based Crown Materials?

Objective: The purpose of this study was to investigate how cigarette smoking affects the surface roughness (R) and stainability of additively and subtractively manufactured resins.

Materials And Methods: Two additively manufactured definitive resins (Dentafab, DF and Formlabs, FL) and a subtractively manufactured resin nanoceramic (Cerasmart, CS) were used to fabricate 60 specimens (14 × 12 × 1 mm). After taking baseline R and color measurements (ΔE), they were divided into two groups (n = 10).

Association of Gingival Thickness With Incisor Morphological Characteristics and Papilla Height: A Cross-Sectional Study.

Objective: The aim of the current study was to examine possible associations between gingival thickness and other parameters, such as crown length and width, papilla height and patient's age and gender.

Overview: This cross-sectional study included 238 consecutive white Caucasian consecutive patients in all stages of orthodontic treatment (before, in-course, and after orthodontic treatment). Measurements of gingival thickness were carried out at both central mandibular incisors, mid-facially on the buccal aspect of each tooth, and 2 mm apically to the free gingival margin, with an Ultrasound device.

Predictive Factors of Dental Implant Failure: A Retrospective Study Using Decision Tree Regression.

Introduction: Dental implants are routinely used to replace missing teeth. Therefore, the primary aim of the present study was to assess the single-unit implant failure rate over a period of seven years from 2015 to 2021, with a minimum of two years post-implant follow-up. The secondary aim was to identify the risk factors associated with implant failure using machine learning decision tree regression and Kaplan-Meier survival analyses.

Effects of the shortened dental arch on oral function in older adults: A prospective cohort study.

Statement Of The Problem: Previous longitudinal studies have found that patients with shortened dental arches (SDA) have a higher risk of long-term tooth loss than complete dental arch (CDA). However, the difference between SDA and CDA concerning oral function has yet to be demonstrated.

Purpose: We aimed to clarify the influence of molar occlusal support on oral function in SDA and CDA participants cross-sectionally and longitudinally.

Quality of life after prosthodontic rehabilitation in patients with bilateral total maxillectomy due to COVID-19-associated mucormycosis of the maxilla.

Background: Coronavirus disease 2019 (COVID-19)-associated mucormycosis of the maxilla emerged as a significant concern in India during the second wave of the pandemic, necessitating surgical interventions such as maxillectomy. This study investigated the quality of life following prosthodontic rehabilitation with interim obturators in patients who underwent bilateral total maxillectomy due to COVID-19-associated mucormycosis of the jaws.

Methods: The study was conducted using questionnaire-based interviews administered by a single investigator employing the Oral Health Impact Profile-14 (OHIP-14) and Obturator Functioning Scale (OFS) questionnaires.

Influence of 3D printing orientations on physico-mechanical properties and accuracy of additively manufactured dental ceramics.

Purpose: This systematic review aims to assess the impact of different 3D printing orientations on the physico-mechanical properties, volumetric change, and accuracy of additively manufactured ceramic specimens, as well as their restorations.

Study Selection: The web database containing records for building orientation of 3D-printed ceramics until January 2024 was searched, with no language limitations. PRISMA 2020 guidelines were followed, and the risk of bias was evaluated using the modified CONSORT checklist for laboratory studies on dental materials.

Comprehensive review of polyetheretherketone use in dentistry.

Purpose: This study aimed to comprehensively summarize the current state, shortcomings, and challenges regarding the use of polyetheretherketone (PEEK) in various fields of stomatology.

Study Selection: This study reviewed articles retrieved from PubMed, Google Scholar, Web of Science, and ScienceDirect databases. The main keywords used during the search included "polyetheretherketone (PEEK)," "dental materials," "orthodontics," "prosthodontics," "oral implantology," "oral and maxillofacial surgery," "periodontics" "osseointegration," and "surface modification.

Influence of wall thickness on the fracture resistance of hollow zirconia artificial teeth fabricated by 3D zirconia printing.

Purpose: To determine the effect of wall thickness on the fracture load of hollow-structured zirconia teeth fabricated using 3D printing.

Methods: The geometry of an artificial ceramic tooth (mandibular right first molar) was copied and modified. The final test group design yielded wall thicknesses of 0.

Incorporation of opacifier to Type III alpha gypsum and its effect on scannability and linear setting expansion - An in vitro study.

Aim: This study aims to enhance the scannability of Type III alpha gypsum by incorporating an opacifier and to evaluate its effect on the LSE property.

Setting And Design: In vitro - Comparative study.

Materials And Methods: The base powder of Type III alpha gypsum was divided into three groups: Group I (100 g of base powder), Group II (90 g of base powder with 10 g of TiO2), and Group III (80 g of base powder with 20 g of TiO2).

Comparative evaluation of marginal fit accuracy of two different designs of endocrown manufactured through CAD-CAM system: An in vitro study.

Aims: To compare the accuracy of marginal fit of CAD-CAM endocrown with two different preparation forms, i.e., endocrown with ferrule and endocrown without ferrule.

Comparison of marginal fit between milled and three-dimensional printed polymethylmethacrylate prostheses for single crowns, anterior bridges, and pier abutment bridges: An in vitro study.

Aim: The purpose of this in vitro study was to compare the marginal fit of various three-dimensional (3D) printed and milled polymethylmethacrylate (PMMA) dental prostheses.

Settings And Design: The study was conducted in an in vitro study setting.

Materials And Methods: With a sample size of 45 for each fabrication method, this investigation compared the marginal fit of milled (Group 1) and 3D printed (Group 2) PMMA dental prostheses across different designs.

Preferences and choice in clinical decision-making with the help of time trade-off and standard gamble techniques among periodontally compromised patients - A cross-sectional study.

Background: To assess the validity of time trade-off (TTO) and standard gamble (SG) techniques of utility valuation among patients with periodontal problems by assessing their relation to two logical constructs; Gingival Index (GI) and Oral Health Impact Profile (OHIP) Questionnaire.

Materials And Methods: Two hundred and one patients aged 18 years old and above, who visited a tertiary care hospital for treatment/consultation were included. A questionnaire was administered to record the TTO, SG, and OHIP.

A comparative evaluation of commercially available short fiber-reinforced composites.

Background: Short fiber-reinforced composites (SFRCs) are restorative materials for large cavities claimed to effectively resist crack propagation. This study aimed to compare the mechanical properties and physical characteristics of five commercially available SFRCS (Alert, Fibrafill Flow, Fibrafill Dentin, everX Flow, and everX Posterior) against a conventional particulate-filled composite (PFC, Essentia Universal).

Methods: The following characteristics were evaluated in accordance with ISO standards: flexural strength and modulus and fracture toughness.

Effect of cementation technique and cement type on the amount of excess cement in implant-supported cement-retained crown restorations: An in vitro study.

Statement Of Problem: Excess cement in implant-supported restorations can lead to peri-implant diseases, and its removal remains a clinical challenge. The optimum method of minimizing excess cement is unclear.

Purpose: The purpose of this in vitro study was to compare 3 cementation techniques and 3 cement types and measure excess cement.

Vertical root fractures and cracked teeth: post-endodontic root dentinal status through micro-CT assessment after ex vivo fiber post removal.

Objectives: This study aimed to investigate cracked teeth and vertical root fracture observable on micro-CT images of extracted roots of mandibular incisors, after fiber post removal.

Materials And Methods: Thirty mandibular incisors were selected with any degree of slight incisal wear inspected with the aid of a stereomicroscope under 12x magnification, in order to have a group of young adult specimens according to the criteria of Hugoson et al. A sample of twelve mandibular incisors were selected, aged between 20 and 30 years old, with similar dentine volume and thickness.

Evaluation of Marginal Fit of CAD/CAM Ceramic Crowns and Scanning Time Using Different Intraoral Scanning Systems.

This study aimed to evaluate the scanning time and marginal fit of CAD/CAM crowns fabricated using different intraoral scanning systems (IOS) (O1-Omnicam 1.0, O2-Omnicam 2.0, PS-Primescan).

Evaluation of the shear bond strength of surface-treated Cobalt-Chromium metal crowns on corticobasal® implant abutments cemented using different luting agents.

Purpose: This in-vitro study aimed to compare the shear bond strength (SBS) of cobalt-chromium (Co-Cr) crowns on Corticobasal® implant abutments, evaluating the effects of two surface treatments and two luting agents.

Materials And Methods: Thirty Co-Cr crowns were fabricated using CAD-CAM technology with a direct metal laser sintering process and divided into three groups based on surface treatment: Group I (untreated), Group II (sandblasted with 50 μm Al₂O₃), and Group III (Er: YAG laser etching). Each group was further subdivided based on luting cement: Sub group A (GC Fuji Plus) and Sub group B (Rely X U200).

Surgical, orthodontic, and prosthetic management of amelogenesis imperfecta associated with severe open bite: a case report.

Amelogenesis imperfecta refers to a group of hereditary diseases that affect dental enamel, often leading to a wide range of clinical manifestations and aesthetic concerns. This case report describes a female patient diagnosed with amelogenesis imperfecta associated with a skeletal open bite. The treatment approach was multidisciplinary.

[Analysis of the effect and influencing factors of glass fiber post and zirconia all ceramic crown in repairing tooth defects].

Purpose: To analyze the repair effect of glass fiber post combined with zirconia all ceramic crown in tooth defects and explore the relevant factors affecting the therapeutic effect.

Methods: A total of 100 patients(142 teeth) with dental defects admitted to Shandong Provincial Chronic Disease Hospital from January 2018 to January 2021 were selected as the study subjects. They were divided into an experimental group (glass fiber post combined with zirconia all ceramic crown restoration) with 70 patients(98 teeth) and the control group (metal post combined with zirconium dioxide all ceramic crown) with 30 patients (44 teeth).

Influence of surface pretreatment using cold-active atmospheric pressure plasma on bond strength of CAD-CAM-fabricated hybrid ceramic crowns: an in-vitro study.

Purpose: This study assesses the impact of Cold Atmospheric Pressure Plasma (CAP) pretreatment on the bond strength of two-piece hybrid ceramic abutment crowns in implant dentistry. The objective is to ascertain whether CAP can be employed as an alternative or complementary technique to conventional methods.

Methods: 80 titanium bases and 80 VITA ENAMIC polymer-infiltrated ceramic network (PICN) crowns were divided into 8 groups (n = 10) based on different surface pretreatments of the crowns before cementation: no treatment (A), hydrofluoric acid (HF) (B), HF and silane (C), silane (D), CAP (AP), HF and CAP (BP), HF, CAP, and silane (CP), and CAP and silane (DP).

Mid-term survival and complications of double-crown-retained removable dental prostheses placed in the dental practice - a retrospective study.

Objectives: Clinical data on the performance of double-crown-retained removable dental prostheses (dcRDPs), especially beyond university studies, are rare. The objective of this retrospective clinical study was to evaluate the survival and complication-freeness probabilities of dcRDPs and to identify risk factors for failure and complications in a dental practice setting.

Materials And Methods: Anonymized practice data of 174 patients (56.

Fracture strength and marginal and internal adaptation of lithium disilicate and hybrid ceramic endocrowns and non-retentive overlays for endodontically treated molar teeth.

Background: With the advances in the adhesive science, several conservative treatment options such as non-retentive overlays have been suggested for endodontically treated posterior teeth. However, information is scarce regarding the fracture strength and adaptation of non-retentive overlays compared with endocrowns, and the effect of material type in this respect. Thus, this study aimed to assess the fracture strength and internal and marginal adaptation of lithium disilicate (LDS) and hybrid ceramic endocrowns and non-retentive overlays for endodontically treated molar teeth.

Effect of geometry on clasp retention force: a finite element analysis study.

Purpose: The retention force of a realistic clasp is influenced by multiple, interrelated factors, which complicates the identification of the fundamental relationship between clasp geometry and retention force. While realistic clasps exhibit various shapes, they share basic geometric elements such as length, diameter, and curvature. Simpler geometries are often more conducive to identifying the underlying issues.

Fracture resistance of monolithic gradient zirconia crowns with different finish line designs and cement spaces.

Objective: This study was aimed at assessing the effects of various finish line designs and cement gap thicknesses on the fracture resistance of gradient zirconia crowns.

Methods: Sixty crowns were fabricated on stainless-steel dies with yttria multi-layered (YML) zirconia and categorized into three primary groups according to finish line type (knife-edge, chamfer, and rounded shoulder). Each group was further classified into two subgroups (n = 10) according to cement space thickness (50 or 80 μm).