Rigidity and retention of ceramic root canal posts.

abstract：PURPOSE:To investigate the effect of different light-curing units and depths on the degree of conversion (DC) through Fourier transform infrared spectroscopy (FTIR) and Knoop Hardness Number (KHN) of a silorane-based composite resin (Filtek LS, 3M ESPE, St Paul, MN, USA) (LS). MATERIALS AND METHODS:LS specimens mounte...

journal_title：Operative dentistry

authors： Torres SA,Silva GC,Maria DA,Campos WR,Magalhães CS,Moreira AN

更新日期：2014-05-01 00:00:00

abstract：:The aim of this review was to compile recent evidence related to nanofilled resin composite materials regarding the properties and clinical performance. Special attention was given to mechanical properties, such as strength, hardness, abrasive wear, water sorption, and solubility. The clinical performance of nanocompo...

journal_title：Operative dentistry

authors： Alzraikat H,Burrow MF,Maghaireh GA,Taha NA

更新日期：2018-07-01 00:00:00

abstract：:This study investigated the microleakage associated with the repair of non-carious amalgam defects using flowable resin composite. Occlusal amalgam preparations were accomplished on 36 non-carious mandibular molars. A standardized 40-micron marginal defect was made by condensing amalgam against a mylar matrix strip. S...

journal_title：Operative dentistry

authors： Roberts HW,Charlton DG,Murchison DF

更新日期：2001-05-01 00:00:00

abstract：OBJECTIVES: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 bond strength of glass fiber posts luted with different cement systems. METHODS:Forty bovine incisors were randomly assigned to five differe...

journal_title：Operative dentistry

authors： Calixto LR,Bandéca MC,Clavijo V,Andrade MF,Vaz LG,Campos EA

更新日期：2012-01-01 00:00:00

abstract：:Retained primary teeth in the smile zone can cause patient dissatisfaction, especially if associated with malposition of teeth. Orthodontic and prosthetic treatment options to treat the situation may not be accepted by some patients. Therefore, these patients tend to maintain their primary teeth and seek different est...

journal_title：Operative dentistry

authors： Bin-Shuwaish MS

更新日期：2017-03-01 00:00:00

abstract：OBJECTIVE:The purpose of this study was to evaluate the effect of phosphoric acid pre-etching times on shear bond strength (SBS) and surface free energy (SFE) with single-step self-etch adhesives. METHODS:The three single-step self-etch adhesives used were: 1) Scotchbond Universal Adhesive (3M ESPE), 2) Clearfil tri-S...

journal_title：Operative dentistry

authors： Tsujimoto A,Barkmeier WW,Takamizawa T,Latta MA,Miyazaki M

更新日期：2016-07-01 00:00:00

abstract：:This study evaluated the effect of ascorbic acid, 500 mg every eight hours, on bleaching-induced tooth sensitivity. A triple-blind, parallel design, and placebo-controlled randomized clinical trial was conducted on 39 adults. The pills (placebo or ascorbic acid) were administered three times per day for 48 hours; the ...

journal_title：Operative dentistry

authors： de Paula EA,Kossatz S,Fernandes D,Loguercio AD,Reis A

更新日期：2014-03-01 00:00:00

abstract：:This study compared the thickness of the hybrid layer formed using Scotchbond Multi-Purpose Plus, Single Bond 2, Prime & Bond 2.1 and Xeno III on a dentin surface prepared with a diamond bur in a high speed handpiece or prepared with an Er:YAG laser used with two parameters of pulse energy (200 and 400 mJ) and two par...

journal_title：Operative dentistry

authors： de Barceleiro MO,Dias KR,Sales HX,Silva BC,Barceleiro CG

更新日期：2008-05-01 00:00:00

abstract：:Under clinical conditions, the time needed for the proper light curing of luting composites or the multi-incremental buildup of a large restoration with halogen curing units is quite extensive. Due to the development of high power curing devices, such as argon lasers and plasma arc lights and, in order to decrease cur...

journal_title：Operative dentistry

authors： Knezevic A,Ristic M,Demoli N,Tarle Z,Music S,Negovetic Mandic V

更新日期：2007-05-01 00:00:00

abstract：OBJECTIVE:The aim of the study was to compare in Class V composite restorations marginal leakage measurements obtained with microcomputed tomography (micro-CT) and scanning electron microscopy (SEM) observations. METHODS:Class V cavities were prepared on 10 human molars and restored using Optibond FL (Kerr, Orange, CA...

journal_title：Operative dentistry

authors： Rengo C,Goracci C,Ametrano G,Chieffi N,Spagnuolo G,Rengo S,Ferrari M

更新日期：2015-07-01 00:00:00

abstract：OBJECTIVE:This study evaluated the importance of enamel at the cervical margin for support and retention of a class II composite restoration in relation to fracture strength, fracture mode, and leakage. METHODS:Sixty-five newly extracted teeth were randomly divided into five groups. Within each group, standardized cla...

journal_title：Operative dentistry

authors： Laegreid T,Gjerdet NR,Vult von Steyern P,Johansson AK

更新日期：2011-03-01 00:00:00

abstract：:The purpose of this study was to determine if air thinning three dentin adhesives would affect bond strength to dentin. Ninety human molars were mounted in acrylic and the occlusal surfaces ground to expose a flat dentin surface. Thirty teeth were randomly assigned to one of the following dentin bonding agent/composit...

journal_title：Operative dentistry

authors： Hilton TJ,Schwartz RS

更新日期：1995-07-01 00:00:00

abstract：OBJECTIVES:To evaluate the effect of application protocol in resin-enamel microshear bond strength (μSBS), in situ degree of conversion, and etching pattern of three universal adhesive systems. METHODS AND MATERIALS:Sixty-three extracted third molars were sectioned in four parts (buccal, lingual, and proximals) and di...

journal_title：Operative dentistry

authors： Cardenas AM,Siqueira F,Rocha J,Szesz AL,Anwar M,El-Askary F,Reis A,Loguercio A

更新日期：2016-09-01 00:00:00

abstract：OBJECTIVES:To evaluate and compare the fracture toughness of dental CAD/CAM materials of different material classes intended for in-office milling (glass ceramics, hybrid, resin composites) and the influence of aging on this property. METHODS AND MATERIALS:The fracture toughness (critical intensity factor, KIc) values...

journal_title：Operative dentistry

authors： Hampe R,Theelke B,Lümkemann N,Eichberger M,Stawarczyk B

更新日期：2019-07-01 00:00:00

abstract：:This study investigated the effect of nonrinse conditioners (ie, Ketac Nano Primer [KNP] and GC Self Conditioner [SC]) used as substrate pretreatment and their respective paste-paste resin-modified glass-ionomer cement (RMGIC) (ie, Ketac Nano [KN] and Fuji Filling LC [FF]) on microtensile bond strength to dentin and m...

journal_title：Operative dentistry

authors： Cook NB,Feitosa SA,Patel A,Alfawaz Y,Eckert GJ,Bottino MC

更新日期：2015-05-01 00:00:00

abstract：:This study investigated the effect of conventional and acidified casein phosphopeptide-amorphous calcium phosphate-containing crèmes (CPP-ACP and ACPP-ACP) on dentin permeability (DP) before and after acid challenge, using a fluid-flow measuring device and scanning electron microscopic (SEM) examination. Fifty dentin ...

journal_title：Operative dentistry

authors： Kijsamanmith K,Banomyong D,Burrow MF,Kanchanasantikul P,Wipawiwat S,Srikam S,Laojarungphesatchakorn S

更新日期：2019-09-01 00:00:00

abstract：:This study evaluated the biocompatibility of contemporary bulk-fill resin-based composites (RBCs) including PRG (pre-reacted glass ionomer) materials based on the International Organization for Standardization 10993. In addition, the effect of composite thickness on cytotoxicity was also assessed. Two standard composi...

journal_title：Operative dentistry

authors： Toh WS,Yap AU,Lim SY

更新日期：2015-11-01 00:00:00

abstract：:Light Emitting Diode (LED) curing units are attractive to clinicians, because most are cordless and should create less heat within tooth structure. However, questions about polymerization efficacy have surrounded this technology. This research evaluated the adequacy of the depth of cure of pit & fissure sealants provi...

journal_title：Operative dentistry

authors： Platt JA,Clark H,Moore BK

更新日期：2005-11-01 00:00:00

abstract：OBJECTIVES:This study investigated cuspal deformation in teeth restored with different types of adhesive materials with and without a base. METHODS:Mesio-occluso-distal slot cavities of moderately large dimension were prepared on extracted maxillary premolars (n=24). Teeth were assigned to one of four groups and resto...

journal_title：Operative dentistry

authors： Nguyen KV,Wong RH,Palamara J,Burrow MF

更新日期：2016-03-01 00:00:00

abstract：:The present clinical case report describes the clinical steps of enamel microabrasion associated with dental bleaching to restore severely-pitted fluorosed teeth. The process of removing the fluorotic superficial stains started by using macroabrasion with a water-cooled fine tapered 3195 FF diamond bur. Rubber dam iso...

journal_title：Operative dentistry

authors： Sundfeld D,Pavani CC,Pini N,Machado LS,Schott TC,Sundfeld RH

更新日期：2019-11-01 00:00:00

abstract：:This study evaluated the effect of fractured or sectioned fragments on the fracture strength recovery of four techniques used for reattachment and resin composite buildups. Ninety-one sound, permanent lower central incisors were used. Half the teeth were fractured in the incisal-proximal edge; the other half had the i...

journal_title：Operative dentistry

authors： Loguercio AD,Mengarda J,Amaral R,Kraul A,Reis A

更新日期：2004-05-01 00:00:00

abstract：PURPOSE:To evaluate the effect of zirconia primers, air-abrasion, and tribochemical surface treatment methods on the shear bond strength between yttria-tetragonal zirconia polycrystal (Y-TZP) ceramic and self-adhesive resin cement. METHODS AND MATERIALS:Y-TZP ceramic surfaces were ground flat with 600-grit silicon car...

journal_title：Operative dentistry

authors： Yi YA,Ahn JS,Park YJ,Jun SH,Lee IB,Cho BH,Son HH,Seo DG

更新日期：2015-01-01 00:00:00

abstract：:Class V restorations are a very common occurrence in clinics. Some reasons include an increase in non-carious cervical lesions (NCCL), root caries and the elderly population. Unfortunately, Class V restorations also represent one of the less durable types of restorations and have a high index of loss of retention, mar...

journal_title：Operative dentistry

authors： Perez CR

更新日期：2010-05-01 00:00:00

abstract：:The aim of the present study was to evaluate the effect of composite resin contamination with powdered and unpowdered latex gloves on the shear bond strength of etch-and-rinse and two-step self-etch adhesive systems. Standard flat dentin surfaces were prepared on the facial aspect of 120 bovine incisors and randomly a...

journal_title：Operative dentistry

authors： Oskoee SS,Navimipour EJ,Bahari M,Ajami AA,Oskoee PA,Abbasi NM

更新日期：2012-09-01 00:00:00

abstract：:One hundred cervical caries-free, nonundercut lesions were restored in 13 patients of mean age 60.5 years, using Silux Plus or Estio LC resin composite bonded with Fuji Bond LC. Patients were recalled at 6 months and 1 year. A 1-year cumulative retention rate of 98% was recorded, while marginal staining was absent. ...

journal_title：Operative dentistry

authors： Burrow MF,Tyas MJ

更新日期：1998-11-01 00:00:00

abstract：:Coronal fractures of posterior teeth are not rare in clinical practice. Most of the time they constitute a restorational problem for the clinician, since they usually end below the free gingival crest. Two hundred coronal fractures of posterior teeth were examined in this study, with respect to several factors. Some o...

journal_title：Operative dentistry

authors： Lagouvardos P,Sourai P,Douvitsas G

更新日期：1989-01-01 00:00:00

abstract：:The purpose of this study was to develop an accurate and reproducible intraoral method of measuring the distance between two teeth, and to conduct a clinical pilot study of the effect of placement of a class 2 posterior resin restoration upon this intertooth dimension. A Kaman Sciences KD-2611 noncontact displacement ...

journal_title：Operative dentistry

authors： Wang JC,Charbeneau GT,Gregory WA,Dennison JB

更新日期：1989-10-01 00:00:00

abstract：PURPOSE::The purpose of this study was to quantify the relative strength tolerance of 1-day and 30-day amalgam following saturation contamination with water, saliva, blood, and handpiece lubricant oil during condensation. METHODS AND MATERIALS::Valiant PhD XT amalgam was tested with 300 shear-strength (N=15) and 120 c...

journal_title：Operative dentistry

authors： Roggenkamp C,Choi B,Chung J,Parhizkar R,Pham A,Robles R

更新日期：2019-03-01 00:00:00

abstract：OBJECTIVES:To evaluate the beam profile and the spectral output of monowave and polywave light-emitting diodes (LEDs) and their influence on the degree of conversion (DC) of bulk fill composites. METHODS:A monowave LED (Smartlite Focus, Dentsply) and a polywave LED (Valo Cordless, Ultradent) were characterized using a...

journal_title：Operative dentistry

authors： Rocha MG,de Oliveira D,Correa IC,Correr-Sobrinho L,Sinhoreti M,Ferracane JL,Correr AB

更新日期：2017-07-01 00:00:00

abstract：:This study evaluated the effect of polishing after one-day storage in water on the gap formation around a Class V restoration completely bordered by enamel (coronal cavity) using one resin-modified glass ionomer, one compomer and one conventional glass ionomer as a control. The study also examined gap formation of the...

journal_title：Operative dentistry

authors： Irie M,Suzuki K

更新日期：2002-01-01 00:00:00