Evaluation of the Effect of Different Abutment Materials on the Final Color of the Restoration After Aging: An In Vitro Study.

Purpose: To compare the effect of thermomechanical aging on implant abutment color change when using different abutment backgrounds.

Materials And Methods: In this study, three separate experimental groups (n = 10) with different implant abutment materials were used: zirconia, modified polyether ether ketone (MPEEK), and polyether ketone ketone (PEKK). Equal-sized glass-ceramic incisor crowns were cemented to the abutments using transparent dual-curing resin cement.

Occlusal Thickness and Cement-Type Effects on Fracture Resistance of Implant-Supported Posterior Monolithic Zirconia Crowns.

Purpose: To evaluate the factors that could influence the fracture resistance of implant-supported posterior monolithic zirconia crowns.

Materials And Methods: Sixty zirconia molar crowns with three different occlusal thicknesses of 0.5, 1.

The effect of nanocoatings of SiO, TiO, and ZrO on titanium-porcelain bonding.

Statement Of Problem: Durable titanium-porcelain bonding is challenging because of the formation of a thick oxide layer on the surface during porcelain firing.

Purpose: The purpose of this in vitro study was to evaluate how atomic layer deposition (ALD) of different oxide coatings affected titanium-porcelain bonding and failure types.

Material And Methods: Forty-four airborne-particle abraded Type-2 titanium specimens were coated by ALD with either SiO, TiO, or ZrO (n=11) at a thickness of 30 nm, whereas control specimens were left uncoated (n=11) (airborne-particle abraded only).

Fracture Resistance of Zirconia, Polyetheretherketone, and Polyetherketoneketone Implant Abutments After Aging.

Purpose: This study aimed to assess the fracture resistance of zirconia (Zr), reinforced polyetheretherketone (PEEK), and polyetherketoneketone (PEKK) implant abutments restored with glass-ceramic crowns after thermomechanical aging.

Materials And Methods: Zr, reinforced PEEK, and PEKK titanium base abutments were divided into three groups (n = 10). CAD/CAM maxillary central incisor crowns were fabricated using monolithic lithium disilicate and luted to the abutments using resin cement.

Oral parafunctions, personality traits, anxiety and their association with signs and symptoms of temporomandibular disorders in the adolescents.

Objectives: To investigate the association between oral parafunctions, personality traits, anxiety and signs and symptoms of temporomandibular disorders in the adolescents.

Methods: Two hundred and seventy adolescents were examined clinically for the signs and symptoms of temporomandibular disorders. Participants completed questionnaires about demographic variables, medical history, symptoms of temporomandibular disorders, parafunctional oral habits, Minnesota Multibasic Personality Inventory, and Spielberger State-Trait Anxiety Inventory.

Fracture Resistance of Titanium, Zirconia, and Ceramic-Reinforced Polyetheretherketone Implant Abutments Supporting CAD/CAM Monolithic Lithium Disilicate Ceramic Crowns After Aging.

Purpose: The purpose of this study was to compare the fracture resistances and the fracture types of titanium, zirconia, and ceramic-reinforced polyetheretherketone (PEEK) implant abutments supporting CAD/CAM monolithic lithium disilicate ceramic crowns after in vitro dynamic loading and thermocycling aging.

Materials And Methods: Three implant abutment (SKY Implant) groups-titanium (group Ti, control); zirconia with titanium base (group Zr); and ceramic-reinforced PEEK (BioHPP) with titanium base (group RPEEK); n = 12 each-were used. Thirty-six CAD/CAM monolithic lithium disilicate crowns (IPS e.

The effect of repeated bonding on the shear bond strength of different resin cements to enamel and dentin.

Purpose: Cementation failures of restorations are frequently observed in clinical practice. The purpose of this study is to compare the effect of initial and repeated bonding on the bond strengths of different resin cements to enamel and dentin.

Materials And Methods: Ninety human maxillary central incisors were bisected longitudinally.

Neonatal line on fetus and infant teeth: An indicator of live birth and mode of delivery.

Background: The neonatal line (NL) is an important issue in forensic odontology. It is the sign of a developmental birth defect, which is caused by the effect of metabolic stress on tooth structures when the fetus passes to extrauterine life.

Aims: The aim of this research is to determine the existence and thickness of NL in teeth, as it is a legal necessity to indicate the signs of viability at birth in a forensic examination of a fetus or infant case.

Effects of silica coating and silane surface conditioning on the bond strength of metal and ceramic brackets to enamel.

Objective: To evaluate the effect of tribochemical silica coating and silane surface conditioning on the bond strength of metal and ceramic brackets bonded to enamel surfaces with light-cured composite resin.

Materials And Methods: Twenty metal and 20 ceramic brackets were divided into four groups (n = 10 for each group). The specimens were randomly assigned to one of the following treatment conditions of the metal and ceramic brackets' surface: (1) tribochemical silica coating combined with silane and (2) no treatment.

A surgical guide for dental implant placement in edentulous posterior regions.

Proper implant placement is crucial for successful implant-supported restorations. This article describes a simple technique for fabricating a vacuum-formed surgical guide to assist in dental implant placement in edentulous posterior regions.

Effect of zirconium-oxide ceramic surface treatments on the bond strength to adhesive resin.

Statement Of Problem: Surface treatment methods used for resin bonding to conventional silica-based dental ceramics are not reliable for zirconium-oxide ceramics.

Purpose: The aim of this study was to compare the effects of airborne-particle abrasion, silanization, tribochemical silica coating, and a combination of bonding/silane coupling agent surface treatment methods on the bond strength of zirconium-oxide ceramic to a resin luting agent.

Material And Methods: Sixty square-shaped (5 x 5 x 1.

The coexistence of temporomandibular disorders and styloid process fracture: a clinical report.

This clinical report describes the diagnosis and treatment of a patient with both temporomandibular disorders (TMD) and styloid process fracture. The presence of tender muscles of mastication, facial pain, especially upon awakening, frequent grinding sounds, and tooth attrition indicated a diagnosis of TMD with bruxism as a possible etiological factor. However, the preliminary diagnosis of styloid process fracture based on the patient's sensation of a foreign body in the throat and some discomfort when turning the head was confirmed using radiography.

Temporomandibular disorders seen in rheumatology practices: A review.

Temporomandibular disorders are recognized as the most common nontooth-related chronic orofacial pain conditions. This article reviews the recent temporomandibular disorders literature and summarizes the temporomandibular disorders seen in rheumatology practices. Arthritis is a common condition affecting the temporomandibular joint.

Age-related changes in tooth enamel as measured by electron microscopy: implications for porcelain laminate veneers.

Statement Of Problem: Available information on the dimensions of the enamel and pulp tissues of tooth structure, as well as their correlation with chronologic age, is limited. However, this information is a significant determinate in planning the tooth reduction for a porcelain laminate veneer (PLV) restoration.

Purpose: This study examined variations in tooth enamel thickness and its correlation with chronologic age as it relates to available tooth substrate for PLV restorations.