Conservative Management of Uneven Anterior Teeth Spacing using Lingual Porcelain Laminate Veneers: Report of Two Cases with 2- and 6-year follow-up.

Porcelain laminate veneers (PLV) offer a conservative aesthetic solution for interdental space closure. However, space is typically not distributed symmetrically, and the mesiodistal width of the restored teeth may increase unless multiple teeth are prepared for conventional PLV to maintain appropriate individual tooth proportion. Ceramic fragments can be suggested to close the space without modifying tooth size and dental proportion.

The role of lead and cadmium in deciduous teeth and saliva on dental caries in children residing in Tehran, Iran.

Background: Lead (Pb) and Cadmium (Cd) are important environmental contaminants. There is no biological monitoring of exposure to these heavy metals and their potential effect on dental caries in children in Tehran, Iran, a polluted megacity. Therefore, the present study investigated the potential association between Pb and Cd levels in primary teeth and saliva and dental caries.

Knowledge of Patients Regarding Infection Control in Dentistry: Development and Validation of a New Questionnaire.

Assessment of patients' knowledge regarding infection control in dentistry can help professionals in the development of protocol planning to minimize the risk of disease transmission through dental procedures. The aim of this paper is to assess the knowledge level about infection control of patients presenting to the dental clinic of the School of Dentistry, Tehran University of Medical Sciences in 2020. The draft of the questionnaire was designed with eight domains regarding infection control in dentistry including the coronavirus disease-2019 (COVID-19).

Effect of Photobiomodulation Therapy with 915 nm Diode Laser on Pain Perception during Local Anesthesia of Maxillary Incisors: A Randomized Controlled Trial.

This study aimed to evaluate the effect of photobiomodulation therapy (PBMT) with 915 nm wavelength on pain reduction during maxillary incisors' local infiltration in a randomized clinical trial study. A prospective triple-blinded split-mouth clinical trial was designed to assess pain perception during needle insertion and local anesthetic injection in 32 healthy patients required operative caries management on contralateral maxillary incisors. After laser treatment (915 nm, power of 1.

Effect of ceramic material type on the fracture load of inlay-retained and full-coverage fixed dental prostheses.

Ceramic inlay-retained fixed partial denture (IRFPD) is a conservative prosthetic option but the mechanical durability of new high strength zirconia reinforced glass ceramic FPDs is not investigated. The purpose of this study was to compare fracture load of 3-unit ceramic FPDs. Extracted premolars and molars ( = 64) were used to create three test groups (IRFPDs) and one control group (full coverage FPD) ( = 8).

In Vitro Evaluation of the Effect of Different Surface Treatments of a Hybrid Ceramic on the Microtensile Bond Strength to a Luting Resin Cement.

The aim of the present study was to investigate the effect of different surface treatments of a hybrid ceramic, Vita Enamic, on the micro-tensile bond strength (µ-TBS) to resin cement. Ten blocks (3×10×8 mm) were retrieved from the original blocks and divided into 5 groups according to the different surface treatments performed: Groups 1: 35% acid phosphoric for 60 seconds (PA); group 2: Sandblasting with 50 µm Al O particles for 10 seconds (SB); groups 3: 9.5% hydrofluoric acid for 60 seconds (HF), group 4: The Er:YAG laser (2 W, 10 Hz) (ER1), group 5: The Er:YAG laser (3 W, 10 Hz) (ER2).

The Micro-Shear Bond Strength of Various Resinous Restorative Materials to Aged Biodentine.

Introduction: The type of materials and application time of veneering restorations on calcium silicate cements are important factors which influence the interfacial properties. The aim of this study was to measure the micro-shear bond strength of a resin composite (RC) using several adhesive systems and a resin-modified glass ionomer cement (RM-GIC) to different aged Biodentine specimens.

Methods And Materials: A total of 15 Biodentine blocks were prepared and assigned to three aging periods: 12 min, one week and one month.

Adherence of to Microhybrid and Nanohybrid Resin Composites and Dental Amalgam: An In Vitro Study.

Objectives: () is a cariogenic microorganism. The restorative materials which harbor a biofilm with high levels of can accelerate the occurrence of dental caries. The purpose of this study was to evaluate the influence of different restorative materials on colonization in a simple in-vitro biofilm formation model.

Immediate tooth replacement using fiber-reinforced composite and natural tooth pontic.

The loss and replacement of anterior maxillary teeth poses several challenges. In patients refusing implant surgery, when minimal tooth reduction is desired, a fiber-reinforced composite fixed-partial denture may be used as a conservative alternative to a conventional fixed-partial denture for replacement of a single missing tooth. This article describes a clinical technique and six-year follow-up.

Temperature rise and degree of photopolymerization conversion of nanocomposites and conventional dental composites.

The aim of the study was to investigate the temperature rise of a nanocomposite and a conventional hybrid dental composite during photopolymerization when cured with halogen curing lamp (QHT) and light-emitting diode (LED). Temperature rise during photopolymerization of two commercially available composites (Filtek Supreme(R) and TetricCeram) were measured using a K-type thermocouple and a digital thermometer. Different curing modes were utilized to cure the composites: a high-intensity QHT unit (Optilux 501) in two different modes (standard and ramp), a low-intensity QHT unit (Coltolux 50), and an LED unit (Ultralume-2).