This study evaluated the bond strength of luting systems for bonding glass fiber posts to root canal dentin. The hypothesis tested was that there are no differences in luted with different cement systems.Forty bovine incisors were randomly assigned five resin groups (n=8). After endodontic treatment and crown removal, translucent bonded into using protocols (self-cured etch-and-rinse adhesive system; dual-cured self-cured self-etch self-adhesive cement). Push-out at three radicular levels:...

Introduction: Dental implantology has evolved significantly, incorporating advanced techniques to improve surgical precision and esthetic outcomes. The socket shield technique, combined with digital planning guided surgery, been proposed minimize buccal bone resorption enhance peri-implant tissue stability. Methods: A female patient presented discoloration mobility of tooth #11. Clinical radiographic examination confirmed external replacement root resorption, requiring extraction implant...

ABSTRACT Objective: To evaluate the effects of immersion solutions and polishing protocols on surface roughness different restorative materials. Material Methods: Specimens from composite resin (CR) (Filtek Z350 XT) CAD-CAM blocks nanoceramic (NC) (Lava Ultimate Restorative), hybrid ceramic (HC) (Enamic), zirconia-reinforced lithium silicate (ZL) (Celtra Duo) were assigned to two protocols: only rubbers (PR) (Ceramisté rubbers®) or PR + paste (Porcelize®) (PR+P). Surface was measured before...

The purpose of this study was to investigate the influence chlorhexidine (CHX) concentration on microtensile bond strength (μTBS) contemporary adhesive systems. Eighty bovine central incisors were used in study. facial enamel surface crowns abraded with 600-grit silicon carbide paper expose flat, mid-coronal dentin surfaces. tested materials Scotchbond Multipurpose (SMP), Single-Bond (SB), Clearfil SE Bond (CSEB) and Tri S (CTSB). All applied according manufacturer's instructions followed by...

Objective. To evaluate the surface roughness of IPS Empress 2 ceramic when treated with different finishing/polishing protocols. Materials and methods. Sixteen specimens were made from wax patterns obtained using a stainless steel split mold. The glazed (Stage 0–S0, control) divided into two groups. in Group 1 (G1) finished/polished KG Sorensen diamond point (S1), followed by siliconized points (S2) final polishing polish paste (S3). In (G2), Shofu as well was performed Porcelize After...

Computer-aided design/computer-aided manufacturing (CAD/CAM) materials were submitted to thermocycling, identify changes in mechanical behavior. Four CAD/CAM divided four subordinate groups (n=9): (1) dry out for 7 days, (2) distilled water at 37oC (3) 60,000 thermocycles, and (4) 120,000 thermocycles. Following samples three-point bending test. Two-way ANOVA post-hoc Tukey's test performed (α=0.05). The IPS e.max CAD had a flexural strength of 396±75 MPa modulus 84±11 GPa, followed by Vita...

was to evaluate the efficacy of three rotary instrument systems (K3, ProTaper and Twisted File) in removing calcium hydroxide residues from root canal walls. Thirty-four human mandibular incisors were instrumented with System up F2 instrument, irrigated 2.5% NaOCl followed by 17% EDTA, filled a intracanal dressing. After 7 days, dressing removed using following instruments: G1 - NiTi size 25, 0.06 taper, K3 System; G2 F2, or G3 File System. The teeth longitudinally grooved on buccal lingual...

ABSTRACT Customized glass fiber posts that is well adjusted into the root canal and have mechanical properties similar to those of dentin may be a suitable treatment for severely compromised endodontically treated teeth. This article reports 3-year follow up damaged teeth restored with unidirectional customized post core system instead conventional post. The fabrication this simple technique, providing an increased volume fibers canal, adequate polymerization post-core system. Over...

Abstract – Objectives : To compare the fracture resistance of bovine teeth after intracoronal bleaching with sodium percarbonate (SPC) or perborate (SP) mixed water 20% hydrogen peroxide (HP). Materials and methods Fifty extracted were divided into four experimental groups (G1–G4) one control ( n = 10) endodontic treatment. Following root canal obturation, a glass ionomer barrier was placed at cemento–enamel junction. After that, pulp chambers filled with: G1 SP water; G2 HP; G3 SPC G4 HP....

The aim of this study is to evaluate the machinability four CAD/CAM materials (n = 13) assessed by brittleness index, Vickers hardness, and fracture toughness interaction among such mechanical properties. selected in vitro are Feldspathic ceramic [FC], Lithium-disilicate glass [LD], leucite-reinforced [LR], nanofilled resin material [RN]. Slices were made from blocks following original dimensions 14 × 12 3 mm (L W H), using a precision slow-speed saw device then surfaces regularized through...

Case Report . An 8-year-old girl with amelogenesis imperfecta (AI) reported unsatisfactory aesthetics, difficulty in mastication, and dental hypersensitivity. The intraoral examination observed mixed dentition, malocclusion anteroposterior relationships, anterior open bite, asymmetry. A hypoplastic form of AI was diagnosed the permanent dentition. multidisciplinary planning performed divided into preventive, orthopedic, rehabilitation stages. Initially, preventive treatment implemented,...

The finite element method (FEM) involves a series of computational procedures to calculate the stress in each element, which performs model solution. Such structural analysis allows determination resulting from external force, pressure, thermal change, and other factors. This is extremely useful for indicating mechanical aspects biomaterials human tissues that can hardly be measured vivo. results obtained then studied using visualization software within FEM environment view variety...

Abstract This study evaluated the persistence of eugenol‐containing (PR, Provy) or eugenol‐free (RT, Relyx Temp, and TB, Temp Bond) temporary cement residues its effects on push‐out bond strength dentinal penetration self‐adhesive resin (Relyx U200). Eighty human roots were endodontically treated post space prepared. Fourty specimens distributed in four groups ( n = 10): Control (CO), without any clinical procedure, PR, RT, where a metallic was cemented with one cements. After removal, hemi...

The objective of this work was to evaluate the relationship between factors associated with COVID-19 pandemic and depression, anxiety, stress (DAS) in dentists. Factors were evaluated using a questionnaire scores Depression, Anxiety, Stress Scales-21 measured. differences DAS based on tested through successive application multivariate analysis variance (MANOVA, α = 0.05). After sample size calculation, 998 participants mean age 39.39 (± 11.69) years included. effect indicated that changes...

This paper describes and discusses the multidisciplinary treatment involving a permanent maxillary lateral incisor fused to supernumerary tooth, both presenting pulp necrosis periapical lesion. A 15-year-old male patient sought complaining of pain, swelling mobility on right incisor. After clinical radiographic examination, root canal preparation was performed according crown-down technique calcium hydroxide dressing placed for 15 days. The returned definitive endodontic filling done with...

The aim of this study was to evaluate the compressive strength microhybrid (Filtek™ Z250) and nanofilled Supreme XT) composite resins photo-activated with two different light guide tips, fiber optic polymer, coupled one LED. power density 653 mW cm−2 when using tip 596 polymer. After storage in distilled water at 37 ± 2 °C for seven days, samples were subjected mechanical testing an EMIC universal machine a load cell 5 kN speed 0.5 mm min−1. statistical analysis performed ANOVA confidence...

This article reports an uncommon case of talon cusp on a geminated permanent maxillary central incisor, including details the clinical and radiographic findings treatment. A 28-year-old woman presented at university dental clinic, intraoral examination revealed incisor abnormal size with prominent accessory lingual aspect. The was diagnosed as tooth. Early diagnosis this anomaly is important since it may cause problems such esthetic concerns, caries tooth crowding. In present case, these...