Management of root resorption with mineral trioxide aggregate complicated by a luxation injury: report of a case with six-year follow-up.

Trauma to the oral region occurs frequently, comprising 5% of all injuries. The most common dental injuries are lateral luxations which can be seen with a prevalence of up to 27% among dental injuries. Ectopic eruption of maxillary canines can lead to root resorption on maxillary lateral incisors especially on apical and middle thirds of the roots.

Effects of different cusp coverage restorations on the fracture resistance of endodontically treated maxillary premolars.

Statement Of Problem: Cusp coverage restorations for the restoration of endodontically treated teeth represent a conservative approach in terms of function and esthetics. However, limited scientific data are available regarding the optimum reduction design and thicknesses.

Purpose: The purpose of this in vitro study was to evaluate the fracture resistance and fracture patterns of cusp coverage restorations with different cusp reduction designs and reduction thicknesses on endodontically treated maxillary premolars (ETMPs) with mesio-occluso-distal (MOD) cavities.

Effects of Er,Cr:YSGG laser parameters on dentin bond strength and interface morphology.

Previous studies have shown the effects of Er,Cr:YSGG laser irradiation on the dentin bond strength; but there are few reports that show the significance of the irradiation with different laser parameters on dentin bond strength and interface morphology. This in-vitro study attempted to evaluate the microtensile bond strength (μTBS) and interface morphology of resin-dentin interfaces, either followed by treatment with Er,Cr:YSGG laser irradiation with different parameters or not. The flattened dentin samples of 35 bovine teeth were embedded into acrylic blocks and randomly divided into seven groups according to surface treatments using Er,Cr:YSGG lasers with different parameters: 3 W/20 Hz, 3 W/35 Hz, 3 W/50 Hz, 1.

Influence of different Er,Cr:YSGG laser parameters on long-term dentin bond strength of self-etch adhesive.

The aim of the present study was to evaluate the effects of erbium, chromium: yattrium-scandium-gallium-garnet (Er,Cr:YSGG) laser frequency on microtensile bond strength (μTBS) of a self-etch adhesive to dentin after 15-month water storage. The Er,Cr:YSGG laser can safely be used on dental hard tissue. However, no study has compared the effects of Er,Cr:YSGG laser parameters and aging by water storage on the bonding effectiveness of self-etch adhesives to dentin.

Effect of simplified ethanol-wet bonding on dentin bonding durability of etchand-rinse adhesives.

This in vitro study evaluated the effects of simplified ethanol-wet bonding technique on dentin bonding durability of two etchand-rinse adhesives to bovine dentin. Sixteen freshly extracted bovine incisors were divided into four groups according to bonding technique (water-wet or ethanol-wet bonding) and adhesive (Single Bond 2 or Prime & Bond NT). After etching and rinsing, dentin surfaces were left either water-moist or immersed in ethanol.

In vitro bonding effectiveness of new self-adhering flowable composite to calcium silicate-based material.

The purpose of this study was to compare in vitro bonding effectiveness of Vertise Flow (VF), a new self-adhering flowable composite (FC), and Ultimate Flow (UF), a conventional FC, to BioAggregate (BA), and to investigate whether the use of self-etch or etch-andrinse adhesive improved the bond strength of VF to BA. Shear bond strengths of FC to BA were measured for this reason. Data were analyzed using Wilcoxon and Mann-Whitney U-tests (p=0.

Evaluation of the radiopacity of luting cements by digital radiography.

Purpose: The aim of this study was to evaluate the radiopacity of eight contemporary luting cements using direct digital radiography.

Materials And Methods: Ten specimens, (5 mm diameter, 1 mm high) were prepared for each material tested (RelyX ARC, RelyX U100, RelyX Unicem, Nexus 2, Nexus 3, Metacem, Breeze, Adhesor zinc phosphate). The specimens were stored in a moist chamber at 37°C until completely set, then radiographed using a Kodak digital sensor and an aluminum step wedge with variable thicknesses (1 to 13 mm in 1-mm increments) used for reference.

Use of mineral trioxide aggregate in the treatment of large periapical lesions: reports of three cases.

Pulpal and periradicular pathosis are the result of microbial, mechanical, or chemical invasion. Microorganisms are the main irritants of pulpal and periapical tissues. The goal of the obturation is to obtain a fluid-tight seal of the root canal system from its coronal aspect through its apical extent to preserve from the irritants.

Effect of smear layer and root-end cavity thickness on apical sealing ability of MTA as a root-end filling material: a bacterial leakage study.

Objective: The aim of this study was to investigate the effect of the cavity thickness and smear layer on apical sealing ability of mineral trioxide aggregate (MTA) as a root-end filling material.

Study Design: Seventy single-rooted maxillary central teeth were used in this study. All teeth were instrumented to size 50 using a step-back technique.

Retreatment of a resected tooth associated with a large periradicular lesion by using a triple antibiotic paste and mineral trioxide aggregate: a case report with a thirty-month follow-up.

Introduction: Trauma to the teeth and supporting structures is a frequent problem among children. Endodontic treatment is necessary for 41.3% of traumatized teeth.

Shear bond strength of conventional glass ionomer cements bound to mineral trioxide aggregate.

Introduction: This study measured the shear bond strength of conventional glass ionomer cements (GICs; Ketac Molar Easymix and Fuji IX) bonded to white mineral trioxide aggregate (WMTA) that had been allowed to set for 2 different time intervals.

Methods: Forty-eight WMTA specimens were prepared; half were stored for 45 minutes, and the remaining 24 specimens were stored for 72 hours at 37 degrees C and 100% humidity. Then each group was divided into 2 subgroups of 12 specimens, and each GIC was layered on each of the 2 WMTA preparations.

The evaluation of the influence of using MTA in teeth with post indication on the apical sealing ability.

Objectives: The aim of this study was to evaluate the influence of using MTA in teeth with post-core indication and to compare it with the immediate or delayed post space preparation on the integrity of apical seal in teeth filled with gutta-percha and sealer.

Study Design: Fifty-one single-rooted freshly extracted human maxillary incisor teeth were selected. The crowns of the teeth were removed to a length of 14 mm and canals were prepared by using K-files with the step-back technique.

Comparison of the sealing ability of three filling techniques in canals shaped with two different rotary systems: a bacterial leakage study.

Objective: This study compared the sealing ability of 3 current filling techniques in root canals shaped with 2 different rotary systems.

Study Design: Eighty human extracted mandibular premolars were divided randomly into 2 similar groups of 40 each and instrumented with either ProTaper (Dentsply Maillefer, Tulsa, OK; group A) or Mtwo (VDW; Antaeos, Munich, Germany; group B) rotary systems. Each group was divided into 3 subgroups (n = 10) and 2 control groups (n = 5).

Treatment of horizontal root fractures using a triple antibiotic paste and mineral trioxide aggregate: a case report.

This case report describes the treatment of a horizontal root fracture in a maxillary central incisor (tooth #8) using a triple antibiotic paste and mineral trioxide aggregate. A nonsurgical endodontic treatment was performed to a coronal root canal fragment of tooth #8. During the treatment procedure, 1% sodium hypochlorite solution was used for irrigation and a triple antibiotic paste was used as an intracanal medicament.

Treatment of horizontal root fractures using MTA as apical plug: report of 3 cases.

Root fractures are rare occurrences through all dental injuries. They comprise only 0.5% to 7.

Effect of passive ultrasonic irrigation on apical extrusion of irrigating solution.

Objectives: To determine the influence of passive ultrasonic irrigation (PUI) on apical extrusion of irrigating solution.

Methods: Twenty freshly extracted maxillary and mandibular incisors with single straight root canals were instrumented with ProTaper rotary files. During final irrigation, the root canals were filled with 2.

Nonsurgical endodontic treatment of Type III dens invaginatus in maxillary canine: an 18-month follow-up.

Dens invaginatus (DI) is a developmental variation resulting from an infolding of the outer enamel surface of a tooth into the interior. The greatest difficulty in the endodontic treatment of DI is in locating the rudimentary root canal, because of the atypical internal morphologic complexity. Invagination may also restrict sufficient cleaning and shaping.

Use of mineral trioxide aggregate in the treatment of horizontal root fractures with a 5-year follow-up: report of a case.

Root fractures are those that involve dentin, cementum, and the pulp. They occur more frequently in children than adults. This case report describes the treatment and 5-year follow-up of two maxillary central incisors with horizontal root fractures using mineral trioxide aggregate and the application of intracoronal bleaching of the discolored tooth.

Long-term evaluation of the influence of smear layer on the apical sealing ability of MTA.

The aim of this in vitro study was to investigate the effect of the smear layer on apical microleakage in teeth obturated with mineral trioxide aggregate (MTA). Fifty single-rooted central maxillary teeth were used in this study. All teeth were instrumented to size 60 by using the step-back technique.

Evaluation of the radiopacity of new root canal paste/sealers by digital radiography.

The aim of the present study was to assess the radiopacity of new polydimethylsiloxane-based root canal filling paste (GuttaFlow; Coltène/Whaledent, Langenau, Germany) and resin-based root canal sealer (Adseal; Meta Biomed Co, Cheongju, Korea) and compare their radiopacity with three currently used root canal sealers (AH Plus [Dentsply DeTrey GmbH, Konstanz, Germany], Epiphany [Pentron, Wallingford, CT], and Diaket [3M ESPE AG, Seefeld, Germany]) by means of direct digital radiography. Six specimens, 5 mm in diameter and 1 mm high, were performed for each material tested. After the material set, radiographs were made by using a digital sensor and a graduated aluminum stepwedge varying in thickness from 1 to 14 mm.

Comparative study of removal of current endodontic fillings.

The aim of the present study was to assess the removability of canal fillings performed by using current methods during re-treatment with rotary instruments. Seventy-two freshly extracted human anterior teeth with single straight root canals were instrumented with Mtwo rotary files. The teeth were randomly divided into 4 obturation groups of 18 specimens each as follows: group 1, Resilon and Epiphany; group 2, GuttaFlow obturation system; group 3, EndoTwinn obturation system; group 4, gutta-percha with AH Plus sealer.

Histologic study of furcation perforations treated with MTA or Super EBA in dogs' teeth.

Objective: The aim of this study was to investigate the histologic response to MTA or Super EBA when used for the repair of furcation perforations in dogs' teeth.

Study Design: Ninety mandibular premolar and molar teeth of 9 mongrel dogs were used in this study. The teeth were divided into 3 groups.